Re: [PATCH 24/37] KVM: PPC: booke: rework rescheduling checks
On 27.02.2012, at 20:28, Scott Wood wrote:
On 02/24/2012 08:26 AM, Alexander Graf wrote:
-void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
+int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
{
unsigned long *pending = vcpu-arch.pending_exceptions;
unsigned long old_pending = vcpu-arch.pending_exceptions;
@@ -283,6 +283,8 @@ void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
/* Tell the guest about our interrupt status */
kvmppc_update_int_pending(vcpu, *pending, old_pending);
+
+return 0;
}
pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 9979be1..3fcec2c 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -439,8 +439,9 @@ static void kvmppc_core_check_exceptions(struct kvm_vcpu
*vcpu)
}
/* Check pending exceptions and deliver one, if possible. */
-void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
+int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
{
+int r = 0;
WARN_ON_ONCE(!irqs_disabled());
kvmppc_core_check_exceptions(vcpu);
@@ -451,8 +452,44 @@ void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
local_irq_disable();
kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
-kvmppc_core_check_exceptions(vcpu);
+r = 1;
};
+
+return r;
+}
+
+/*
+ * Common checks before entering the guest world. Call with interrupts
+ * disabled.
+ *
+ * returns !0 if a signal is pending and check_signal is true
+ */
+static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu, bool check_signal)
+{
+int r = 0;
+
+WARN_ON_ONCE(!irqs_disabled());
+while (true) {
+if (need_resched()) {
+local_irq_enable();
+cond_resched();
+local_irq_disable();
+continue;
+}
+
+if (kvmppc_core_prepare_to_enter(vcpu)) {
+/* interrupts got enabled in between, so we
+ are back at square 1 */
+continue;
+}
+
+
+if (check_signal signal_pending(current))
+r = 1;
If there is a signal pending and MSR[WE] is set, we'll loop forever
without reaching this check.
Good point. How about something like this on top (will fold in later)?
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 430055e..9f27258 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -477,15 +477,17 @@ static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
continue;
}
+ if (signal_pending(current)) {
+ r = 1;
+ break;
+ }
+
if (kvmppc_core_prepare_to_enter(vcpu)) {
/* interrupts got enabled in between, so we
are back at square 1 */
continue;
}
- if (signal_pending(current))
- r = 1;
-
break;
}
Alex
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Re: [PATCH 24/37] KVM: PPC: booke: rework rescheduling checks
On 02/28/2012 05:03 AM, Alexander Graf wrote:
On 27.02.2012, at 20:28, Scott Wood wrote:
If there is a signal pending and MSR[WE] is set, we'll loop forever
without reaching this check.
Good point. How about something like this on top (will fold in later)?
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 430055e..9f27258 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -477,15 +477,17 @@ static int kvmppc_prepare_to_enter(struct kvm_vcpu
*vcpu)
continue;
}
+ if (signal_pending(current)) {
+ r = 1;
+ break;
+ }
+
if (kvmppc_core_prepare_to_enter(vcpu)) {
/* interrupts got enabled in between, so we
are back at square 1 */
continue;
}
- if (signal_pending(current))
- r = 1;
-
break;
}
Looks OK.
-Scott
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[PATCH 23/38] KVM: PPC: booke: deliver program int on emulation failure
When we fail to emulate an instruction for the guest, we better go in and tell it that we failed to emulate it, by throwing an illegal instruction exception. Please beware that we basically never get around to telling the guest that we failed thanks to the debugging code right above it. If user space however decides that it wants to ignore the debug, we would at least do the right thing afterwards. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/booke.c |2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 17d5318..9979be1 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -545,13 +545,13 @@ static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu) return RESUME_HOST; case EMULATE_FAIL: - /* XXX Deliver Program interrupt to guest. */ printk(KERN_CRIT %s: emulation at %lx failed (%08x)\n, __func__, vcpu-arch.pc, vcpu-arch.last_inst); /* For debugging, encode the failing instruction and * report it to userspace. */ run-hw.hardware_exit_reason = ~0ULL 32; run-hw.hardware_exit_reason |= vcpu-arch.last_inst; + kvmppc_core_queue_program(vcpu, ESR_PIL); return RESUME_HOST; default: -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 14/38] KVM: PPC: booke: standard PPC floating point support
From: Scott Wood scottw...@freescale.com
e500mc has a normal PPC FPU, rather than SPE which is found
on e500v1/v2.
Based on code from Liu Yu yu@freescale.com.
Signed-off-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/system.h |1 +
arch/powerpc/kvm/booke.c | 44 +
arch/powerpc/kvm/booke.h | 30 +
3 files changed, 75 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/system.h
b/arch/powerpc/include/asm/system.h
index c377457..73eee86 100644
--- a/arch/powerpc/include/asm/system.h
+++ b/arch/powerpc/include/asm/system.h
@@ -140,6 +140,7 @@ extern void via_cuda_init(void);
extern void read_rtc_time(void);
extern void pmac_find_display(void);
extern void giveup_fpu(struct task_struct *);
+extern void load_up_fpu(void);
extern void disable_kernel_fp(void);
extern void enable_kernel_fp(void);
extern void flush_fp_to_thread(struct task_struct *);
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 75dbaeb..0b77be1 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -457,6 +457,11 @@ void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
{
int ret;
+#ifdef CONFIG_PPC_FPU
+ unsigned int fpscr;
+ int fpexc_mode;
+ u64 fpr[32];
+#endif
if (!vcpu-arch.sane) {
kvm_run-exit_reason = KVM_EXIT_INTERNAL_ERROR;
@@ -479,7 +484,46 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct
kvm_vcpu *vcpu)
}
kvm_guest_enter();
+
+#ifdef CONFIG_PPC_FPU
+ /* Save userspace FPU state in stack */
+ enable_kernel_fp();
+ memcpy(fpr, current-thread.fpr, sizeof(current-thread.fpr));
+ fpscr = current-thread.fpscr.val;
+ fpexc_mode = current-thread.fpexc_mode;
+
+ /* Restore guest FPU state to thread */
+ memcpy(current-thread.fpr, vcpu-arch.fpr, sizeof(vcpu-arch.fpr));
+ current-thread.fpscr.val = vcpu-arch.fpscr;
+
+ /*
+* Since we can't trap on MSR_FP in GS-mode, we consider the guest
+* as always using the FPU. Kernel usage of FP (via
+* enable_kernel_fp()) in this thread must not occur while
+* vcpu-fpu_active is set.
+*/
+ vcpu-fpu_active = 1;
+
+ kvmppc_load_guest_fp(vcpu);
+#endif
+
ret = __kvmppc_vcpu_run(kvm_run, vcpu);
+
+#ifdef CONFIG_PPC_FPU
+ kvmppc_save_guest_fp(vcpu);
+
+ vcpu-fpu_active = 0;
+
+ /* Save guest FPU state from thread */
+ memcpy(vcpu-arch.fpr, current-thread.fpr, sizeof(vcpu-arch.fpr));
+ vcpu-arch.fpscr = current-thread.fpscr.val;
+
+ /* Restore userspace FPU state from stack */
+ memcpy(current-thread.fpr, fpr, sizeof(current-thread.fpr));
+ current-thread.fpscr.val = fpscr;
+ current-thread.fpexc_mode = fpexc_mode;
+#endif
+
kvm_guest_exit();
out:
diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h
index d53bcf2..3bf5eda 100644
--- a/arch/powerpc/kvm/booke.h
+++ b/arch/powerpc/kvm/booke.h
@@ -96,4 +96,34 @@ enum int_class {
void kvmppc_set_pending_interrupt(struct kvm_vcpu *vcpu, enum int_class type);
+/*
+ * Load up guest vcpu FP state if it's needed.
+ * It also set the MSR_FP in thread so that host know
+ * we're holding FPU, and then host can help to save
+ * guest vcpu FP state if other threads require to use FPU.
+ * This simulates an FP unavailable fault.
+ *
+ * It requires to be called with preemption disabled.
+ */
+static inline void kvmppc_load_guest_fp(struct kvm_vcpu *vcpu)
+{
+#ifdef CONFIG_PPC_FPU
+ if (vcpu-fpu_active !(current-thread.regs-msr MSR_FP)) {
+ load_up_fpu();
+ current-thread.regs-msr |= MSR_FP;
+ }
+#endif
+}
+
+/*
+ * Save guest vcpu FP state into thread.
+ * It requires to be called with preemption disabled.
+ */
+static inline void kvmppc_save_guest_fp(struct kvm_vcpu *vcpu)
+{
+#ifdef CONFIG_PPC_FPU
+ if (vcpu-fpu_active (current-thread.regs-msr MSR_FP))
+ giveup_fpu(current);
+#endif
+}
#endif /* __KVM_BOOKE_H__ */
--
1.6.0.2
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[PATCH 21/38] KVM: PPC: make e500v2 kvm and e500mc cpu mutually exclusive
We can't run e500v2 kvm on e500mc kernels, so indicate that by making the 2 options mutually exclusive in kconfig. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/Kconfig |2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 44a998d..f4dacb9 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -120,7 +120,7 @@ config KVM_EXIT_TIMING config KVM_E500V2 bool KVM support for PowerPC E500v2 processors - depends on EXPERIMENTAL E500 + depends on EXPERIMENTAL E500 !PPC_E500MC select KVM select KVM_MMIO ---help--- -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 18/38] KVM: PPC: e500mc: Move r1/r2 restoration very early
If we hit any exception whatsoever in the restore path and r1/r2 aren't the host registers, we don't get a working oops. So it's always a good idea to restore them as early as possible. This time, it actually has practical reasons to do so too, since we need to have the host page fault handler fix up our guest instruction read code. And for that to work we need r1/r2 restored. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/bookehv_interrupts.S | 12 ++-- 1 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index 9eaeebd..63023ae 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -67,6 +67,12 @@ * saved in vcpu: cr, ctr, r3-r13 */ .macro kvm_handler_common intno, srr0, flags + /* Restore host stack pointer */ + PPC_STL r1, VCPU_GPR(r1)(r4) + PPC_STL r2, VCPU_GPR(r2)(r4) + PPC_LL r1, VCPU_HOST_STACK(r4) + PPC_LL r2, HOST_R2(r1) + mfspr r10, SPRN_PID lwz r8, VCPU_HOST_PID(r4) PPC_LL r11, VCPU_SHARED(r4) @@ -290,10 +296,8 @@ _GLOBAL(kvmppc_resume_host) /* Save remaining volatile guest register state to vcpu. */ mfspr r3, SPRN_VRSAVE PPC_STL r0, VCPU_GPR(r0)(r4) - PPC_STL r1, VCPU_GPR(r1)(r4) mflrr5 mfspr r6, SPRN_SPRG4 - PPC_STL r2, VCPU_GPR(r2)(r4) PPC_STL r5, VCPU_LR(r4) mfspr r7, SPRN_SPRG5 PPC_STL r3, VCPU_VRSAVE(r4) @@ -334,10 +338,6 @@ _GLOBAL(kvmppc_resume_host) mtspr SPRN_EPCR, r3 isync - /* Restore host stack pointer */ - PPC_LL r1, VCPU_HOST_STACK(r4) - PPC_LL r2, HOST_R2(r1) - /* Switch to kernel stack and jump to handler. */ PPC_LL r3, HOST_RUN(r1) mr r5, r14 /* intno */ -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 38/38] KVM: PPC: Booke: only prepare to enter when we enter
So far, we've always called prepare_to_enter even when all we did was return
to the host. This patch changes that semantic to only call prepare_to_enter
when we actually want to get back into the guest.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/booke.c | 18 ++
1 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 8e8aa4c..9f27258 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -464,7 +464,7 @@ int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
*
* returns !0 if a signal is pending and check_signal is true
*/
-static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu, bool check_signal)
+static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
{
int r = 0;
@@ -477,7 +477,7 @@ static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu,
bool check_signal)
continue;
}
- if (check_signal signal_pending(current)) {
+ if (signal_pending(current)) {
r = 1;
break;
}
@@ -509,7 +509,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct
kvm_vcpu *vcpu)
}
local_irq_disable();
- if (kvmppc_prepare_to_enter(vcpu, true)) {
+ if (kvmppc_prepare_to_enter(vcpu)) {
kvm_run-exit_reason = KVM_EXIT_INTR;
ret = -EINTR;
goto out;
@@ -946,11 +946,13 @@ int kvmppc_handle_exit(struct kvm_run *run, struct
kvm_vcpu *vcpu,
* To avoid clobbering exit_reason, only check for signals if we
* aren't already exiting to userspace for some other reason.
*/
- local_irq_disable();
- if (kvmppc_prepare_to_enter(vcpu, !(r RESUME_HOST))) {
- run-exit_reason = KVM_EXIT_INTR;
- r = (-EINTR 2) | RESUME_HOST | (r RESUME_FLAG_NV);
- kvmppc_account_exit(vcpu, SIGNAL_EXITS);
+ if (!(r RESUME_HOST)) {
+ local_irq_disable();
+ if (kvmppc_prepare_to_enter(vcpu)) {
+ run-exit_reason = KVM_EXIT_INTR;
+ r = (-EINTR 2) | RESUME_HOST | (r RESUME_FLAG_NV);
+ kvmppc_account_exit(vcpu, SIGNAL_EXITS);
+ }
}
return r;
--
1.6.0.2
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[PATCH 37/38] KVM: PPC: booke: Reinject performance monitor interrupts
When we get a performance monitor interrupt, we need to make sure that the host receives it. So reinject it like we reinject the other host destined interrupts. Signed-off-by: Alexander Graf ag...@suse.de --- v2 - v3: - call regs sync directly --- arch/powerpc/include/asm/hw_irq.h |1 + arch/powerpc/kvm/booke.c |4 2 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/include/asm/hw_irq.h b/arch/powerpc/include/asm/hw_irq.h index bb712c9..904e66c 100644 --- a/arch/powerpc/include/asm/hw_irq.h +++ b/arch/powerpc/include/asm/hw_irq.h @@ -12,6 +12,7 @@ #include asm/processor.h extern void timer_interrupt(struct pt_regs *); +extern void performance_monitor_exception(struct pt_regs *regs); #ifdef CONFIG_PPC64 #include asm/paca.h diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 488936b..8e8aa4c 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -634,6 +634,10 @@ static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu, case BOOKE_INTERRUPT_MACHINE_CHECK: /* FIXME */ break; + case BOOKE_INTERRUPT_PERFORMANCE_MONITOR: + kvmppc_fill_pt_regs(regs); + performance_monitor_exception(regs); + break; } } -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 34/38] KVM: PPC: e500: fix typo in tlb code
The tlbncfg registers should be populated with their respective TLB's values. Fix the obvious typo. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/e500_tlb.c |4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index 279e10a..e05232b 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -1268,8 +1268,8 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500) vcpu-arch.tlbcfg[1] = mfspr(SPRN_TLB1CFG) ~(TLBnCFG_N_ENTRY | TLBnCFG_ASSOC); - vcpu-arch.tlbcfg[0] |= vcpu_e500-gtlb_params[1].entries; - vcpu-arch.tlbcfg[0] |= + vcpu-arch.tlbcfg[1] |= vcpu_e500-gtlb_params[1].entries; + vcpu-arch.tlbcfg[1] |= vcpu_e500-gtlb_params[1].ways TLBnCFG_ASSOC_SHIFT; return 0; -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 35/38] KVM: PPC: booke: Support perfmon interrupts
When during guest context we get a performance monitor interrupt, we currently bail out and oops. Let's route it to its correct handler instead. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/booke.c |4 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 7df3f3a..ee39c8a 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -679,6 +679,10 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, r = RESUME_GUEST; break; + case BOOKE_INTERRUPT_PERFORMANCE_MONITOR: + r = RESUME_GUEST; + break; + case BOOKE_INTERRUPT_HV_PRIV: r = emulation_exit(run, vcpu); break; -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 36/38] KVM: PPC: booke: expose good state on irq reinject
When reinjecting an interrupt into the host interrupt handler after we're
back in host kernel land, we need to tell the kernel where the interrupt
happened. We can't tell it that we were in guest state, because that might
lead to random code walking host addresses. So instead, we tell it that
we came from the interrupt reinject code.
This helps getting reasonable numbers out of perf.
Signed-off-by: Alexander Graf ag...@suse.de
---
v2 - v3:
- actually sync host state
- no need for vcpu in sync
---
arch/powerpc/kvm/booke.c | 56 +
1 files changed, 41 insertions(+), 15 deletions(-)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index ee39c8a..488936b 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -595,37 +595,63 @@ static int emulation_exit(struct kvm_run *run, struct
kvm_vcpu *vcpu)
}
}
-/**
- * kvmppc_handle_exit
- *
- * Return value is in the form (errcode2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
- */
-int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
- unsigned int exit_nr)
+static void kvmppc_fill_pt_regs(struct pt_regs *regs)
{
- int r = RESUME_HOST;
+ ulong r1, ip, msr, lr;
+
+ asm(mr %0, 1 : =r(r1));
+ asm(mflr %0 : =r(lr));
+ asm(mfmsr %0 : =r(msr));
+ asm(bl 1f; 1: mflr %0 : =r(ip));
+
+ memset(regs, 0, sizeof(*regs));
+ regs-gpr[1] = r1;
+ regs-nip = ip;
+ regs-msr = msr;
+ regs-link = lr;
+}
- /* update before a new last_exit_type is rewritten */
- kvmppc_update_timing_stats(vcpu);
+static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu,
+unsigned int exit_nr)
+{
+ struct pt_regs regs;
switch (exit_nr) {
case BOOKE_INTERRUPT_EXTERNAL:
- do_IRQ(current-thread.regs);
+ kvmppc_fill_pt_regs(regs);
+ do_IRQ(regs);
break;
-
case BOOKE_INTERRUPT_DECREMENTER:
- timer_interrupt(current-thread.regs);
+ kvmppc_fill_pt_regs(regs);
+ timer_interrupt(regs);
break;
-
#if defined(CONFIG_PPC_FSL_BOOK3E) || defined(CONFIG_PPC_BOOK3E_64)
case BOOKE_INTERRUPT_DOORBELL:
- doorbell_exception(current-thread.regs);
+ kvmppc_fill_pt_regs(regs);
+ doorbell_exception(regs);
break;
#endif
case BOOKE_INTERRUPT_MACHINE_CHECK:
/* FIXME */
break;
}
+}
+
+/**
+ * kvmppc_handle_exit
+ *
+ * Return value is in the form (errcode2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
+ */
+int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
+ unsigned int exit_nr)
+{
+ int r = RESUME_HOST;
+
+ /* update before a new last_exit_type is rewritten */
+ kvmppc_update_timing_stats(vcpu);
+
+ /* restart interrupts if they were meant for the host */
+ kvmppc_restart_interrupt(vcpu, exit_nr);
local_irq_enable();
--
1.6.0.2
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[PATCH 33/38] KVM: PPC: bookehv: remove unused code
There was some unused code in the exit code path that must have been a leftover from earlier iterations. While it did no harm, it's superfluous and thus should be removed. Signed-off-by: Alexander Graf ag...@suse.de --- v2 - v3: - fix commit message - also remove lwzr9, VCPU_KVM(r4) which was as superfluous --- arch/powerpc/kvm/bookehv_interrupts.S |7 --- 1 files changed, 0 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index 021d087..63fc5f0 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -91,10 +91,6 @@ PPC_STL r9, VCPU_TIMING_EXIT_TBU(r4) #endif - .if \flags NEED_EMU - lwz r9, VCPU_KVM(r4) - .endif - orisr8, r6, MSR_CE@h #ifdef CONFIG_64BIT std r6, (VCPU_SHARED_MSR)(r11) @@ -112,9 +108,6 @@ * appropriate for the exception type). */ cmpwr6, r8 - .if \flags NEED_EMU - lwz r9, KVM_LPID(r9) - .endif beq 1f mfmsr r7 .if \srr0 != SPRN_MCSRR0 \srr0 != SPRN_CSRR0 -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 32/38] KVM: PPC: booke: add GS documentation for program interrupt
The comment for program interrupts triggered when using bookehv was
misleading. Update it to mention why MSR_GS indicates that we have
to inject an interrupt into the guest again, not emulate it.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/booke.c | 10 --
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index af02d9d..7df3f3a 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -685,8 +685,14 @@ int kvmppc_handle_exit(struct kvm_run *run, struct
kvm_vcpu *vcpu,
case BOOKE_INTERRUPT_PROGRAM:
if (vcpu-arch.shared-msr (MSR_PR | MSR_GS)) {
- /* Program traps generated by user-level software must
be handled
-* by the guest kernel. */
+ /*
+* Program traps generated by user-level software must
+* be handled by the guest kernel.
+*
+* In GS mode, hypervisor privileged instructions trap
+* on BOOKE_INTERRUPT_HV_PRIV, not here, so these are
+* actual program interrupts, handled by the guest.
+*/
kvmppc_core_queue_program(vcpu, vcpu-arch.fault_esr);
r = RESUME_GUEST;
kvmppc_account_exit(vcpu, USR_PR_INST);
--
1.6.0.2
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[PATCH 02/38] powerpc/e500: split CPU_FTRS_ALWAYS/CPU_FTRS_POSSIBLE
From: Scott Wood scottw...@freescale.com
Split e500 (v1/v2) and e500mc/e5500 to allow optimization of feature
checks that differ between the two.
Signed-off-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/cputable.h | 12
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/asm/cputable.h
b/arch/powerpc/include/asm/cputable.h
index 6a034a2..2022f2d 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -483,8 +483,10 @@ enum {
CPU_FTRS_E200 |
#endif
#ifdef CONFIG_E500
- CPU_FTRS_E500 | CPU_FTRS_E500_2 | CPU_FTRS_E500MC |
- CPU_FTRS_E5500 |
+ CPU_FTRS_E500 | CPU_FTRS_E500_2 |
+#endif
+#ifdef CONFIG_PPC_E500MC
+ CPU_FTRS_E500MC | CPU_FTRS_E5500 |
#endif
0,
};
@@ -528,8 +530,10 @@ enum {
CPU_FTRS_E200
#endif
#ifdef CONFIG_E500
- CPU_FTRS_E500 CPU_FTRS_E500_2 CPU_FTRS_E500MC
- CPU_FTRS_E5500
+ CPU_FTRS_E500 CPU_FTRS_E500_2
+#endif
+#ifdef CONFIG_PPC_E500MC
+ CPU_FTRS_E500MC CPU_FTRS_E5500
#endif
CPU_FTRS_POSSIBLE,
};
--
1.6.0.2
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[PATCH 29/38] KVM: PPC: bookehv: disable MAS register updates early
We need to make sure that no MAS updates happen automatically while we have the guest MAS registers loaded. So move the disabling code a bit higher up so that it covers the full time we have guest values in MAS registers. The race this patch fixes should never occur, but it makes the code a bit more logical to do it this way around. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/bookehv_interrupts.S | 10 ++ 1 files changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index 469bd3f..021d087 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -358,6 +358,7 @@ _GLOBAL(kvmppc_resume_host) mtspr SPRN_MAS4, r6 stw r5, VCPU_SHARED_MAS7_3+0(r11) mtspr SPRN_MAS6, r8 + /* Enable MAS register updates via exception */ mfspr r3, SPRN_EPCR rlwinm r3, r3, 0, ~SPRN_EPCR_DMIUH mtspr SPRN_EPCR, r3 @@ -515,6 +516,11 @@ lightweight_exit: mtspr SPRN_PID, r3 PPC_LL r11, VCPU_SHARED(r4) + /* Disable MAS register updates via exception */ + mfspr r3, SPRN_EPCR + orisr3, r3, SPRN_EPCR_DMIUH@h + mtspr SPRN_EPCR, r3 + isync /* Save host mas4 and mas6 and load guest MAS registers */ mfspr r3, SPRN_MAS4 stw r3, VCPU_HOST_MAS4(r4) @@ -538,10 +544,6 @@ lightweight_exit: lwz r5, VCPU_SHARED_MAS7_3+0(r11) mtspr SPRN_MAS6, r3 mtspr SPRN_MAS7, r5 - /* Disable MAS register updates via exception */ - mfspr r3, SPRN_EPCR - orisr3, r3, SPRN_EPCR_DMIUH@h - mtspr SPRN_EPCR, r3 /* * Host interrupt handlers may have clobbered these guest-readable -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 31/38] KVM: PPC: booke: Readd debug abort code for machine check
When during guest execution we get a machine check interrupt, we don't
know how to handle it yet. So let's add the error printing code back
again that we dropped accidently earlier and tell user space that something
went really wrong.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/booke.c |7 ++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 11b0625..af02d9d 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -634,7 +634,12 @@ int kvmppc_handle_exit(struct kvm_run *run, struct
kvm_vcpu *vcpu,
switch (exit_nr) {
case BOOKE_INTERRUPT_MACHINE_CHECK:
- r = RESUME_GUEST;
+ printk(MACHINE CHECK: %lx\n, mfspr(SPRN_MCSR));
+ kvmppc_dump_vcpu(vcpu);
+ /* For debugging, send invalid exit reason to user space */
+ run-hw.hardware_exit_reason = ~1ULL 32;
+ run-hw.hardware_exit_reason |= mfspr(SPRN_MCSR);
+ r = RESUME_HOST;
break;
case BOOKE_INTERRUPT_EXTERNAL:
--
1.6.0.2
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[PATCH 15/38] KVM: PPC: e500mc support
From: Scott Wood scottw...@freescale.com
Add processor support for e500mc, using hardware virtualization support
(GS-mode).
Current issues include:
- No support for external proxy (coreint) interrupt mode in the guest.
Includes work by Ashish Kalra ashish.ka...@freescale.com,
Varun Sethi varun.se...@freescale.com, and
Liu Yu yu@freescale.com.
Signed-off-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/cputable.h |6 +-
arch/powerpc/include/asm/kvm.h|1 +
arch/powerpc/kernel/cpu_setup_fsl_booke.S |1 +
arch/powerpc/kernel/head_fsl_booke.S | 46
arch/powerpc/kvm/Kconfig | 17 ++-
arch/powerpc/kvm/Makefile | 11 +
arch/powerpc/kvm/e500.h | 13 +-
arch/powerpc/kvm/e500_emulate.c | 24 ++-
arch/powerpc/kvm/e500_tlb.c | 21 ++-
arch/powerpc/kvm/e500mc.c | 342 +
arch/powerpc/kvm/powerpc.c|6 +-
11 files changed, 476 insertions(+), 12 deletions(-)
create mode 100644 arch/powerpc/kvm/e500mc.c
diff --git a/arch/powerpc/include/asm/cputable.h
b/arch/powerpc/include/asm/cputable.h
index 2022f2d..598cd24 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -168,6 +168,7 @@ extern const char *powerpc_base_platform;
#define CPU_FTR_LWSYNC ASM_CONST(0x0800)
#define CPU_FTR_NOEXECUTE ASM_CONST(0x1000)
#define CPU_FTR_INDEXED_DCRASM_CONST(0x2000)
+#define CPU_FTR_EMB_HV ASM_CONST(0x4000)
/*
* Add the 64-bit processor unique features in the top half of the word;
@@ -386,11 +387,11 @@ extern const char *powerpc_base_platform;
CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
#define CPU_FTRS_E500MC(CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | \
CPU_FTR_L2CSR | CPU_FTR_LWSYNC | CPU_FTR_NOEXECUTE | \
- CPU_FTR_DBELL | CPU_FTR_DEBUG_LVL_EXC)
+ CPU_FTR_DBELL | CPU_FTR_DEBUG_LVL_EXC | CPU_FTR_EMB_HV)
#define CPU_FTRS_E5500 (CPU_FTR_USE_TB | CPU_FTR_NODSISRALIGN | \
CPU_FTR_L2CSR | CPU_FTR_LWSYNC | CPU_FTR_NOEXECUTE | \
CPU_FTR_DBELL | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \
- CPU_FTR_DEBUG_LVL_EXC)
+ CPU_FTR_DEBUG_LVL_EXC | CPU_FTR_EMB_HV)
#define CPU_FTRS_GENERIC_32(CPU_FTR_COMMON | CPU_FTR_NODSISRALIGN)
/* 64-bit CPUs */
@@ -535,6 +536,7 @@ enum {
#ifdef CONFIG_PPC_E500MC
CPU_FTRS_E500MC CPU_FTRS_E5500
#endif
+ ~CPU_FTR_EMB_HV/* can be removed at runtime */
CPU_FTRS_POSSIBLE,
};
#endif /* __powerpc64__ */
diff --git a/arch/powerpc/include/asm/kvm.h b/arch/powerpc/include/asm/kvm.h
index b921c3f..1bea4d8 100644
--- a/arch/powerpc/include/asm/kvm.h
+++ b/arch/powerpc/include/asm/kvm.h
@@ -277,6 +277,7 @@ struct kvm_sync_regs {
#define KVM_CPU_E500V2 2
#define KVM_CPU_3S_32 3
#define KVM_CPU_3S_64 4
+#define KVM_CPU_E500MC 5
/* for KVM_CAP_SPAPR_TCE */
struct kvm_create_spapr_tce {
diff --git a/arch/powerpc/kernel/cpu_setup_fsl_booke.S
b/arch/powerpc/kernel/cpu_setup_fsl_booke.S
index 8053db0..69fdd23 100644
--- a/arch/powerpc/kernel/cpu_setup_fsl_booke.S
+++ b/arch/powerpc/kernel/cpu_setup_fsl_booke.S
@@ -73,6 +73,7 @@ _GLOBAL(__setup_cpu_e500v2)
mtlrr4
blr
_GLOBAL(__setup_cpu_e500mc)
+ mr r5, r4
mflrr4
bl __e500_icache_setup
bl __e500_dcache_setup
diff --git a/arch/powerpc/kernel/head_fsl_booke.S
b/arch/powerpc/kernel/head_fsl_booke.S
index 418931f..88c0a35 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -380,10 +380,16 @@ interrupt_base:
mtspr SPRN_SPRG_WSCRATCH0, r10 /* Save some working registers */
mfspr r10, SPRN_SPRG_THREAD
stw r11, THREAD_NORMSAVE(0)(r10)
+#ifdef CONFIG_KVM_BOOKE_HV
+BEGIN_FTR_SECTION
+ mfspr r11, SPRN_SRR1
+END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
+#endif
stw r12, THREAD_NORMSAVE(1)(r10)
stw r13, THREAD_NORMSAVE(2)(r10)
mfcrr13
stw r13, THREAD_NORMSAVE(3)(r10)
+ DO_KVM BOOKE_INTERRUPT_DTLB_MISS SPRN_SRR1
mfspr r10, SPRN_DEAR /* Get faulting address */
/* If we are faulting a kernel address, we have to use the
@@ -468,10 +474,16 @@ interrupt_base:
mtspr SPRN_SPRG_WSCRATCH0, r10 /* Save some working registers */
mfspr r10, SPRN_SPRG_THREAD
stw r11, THREAD_NORMSAVE(0)(r10)
+#ifdef CONFIG_KVM_BOOKE_HV
+BEGIN_FTR_SECTION
+ mfspr r11, SPRN_SRR1
+END_FTR_SECTION_IFSET(CPU_FTR_EMB_HV)
+#endif
stw r12, THREAD_NORMSAVE(1)(r10)
stw r13, THREAD_NORMSAVE(2)(r10)
mfcrr13
stw r13, THREAD_NORMSAVE(3)(r10)
+
[PATCH 28/38] KVM: PPC: bookehv: remove SET_VCPU
The SET_VCPU macro is a leftover from times when the vcpu struct wasn't stored in the thread on vcpu_load/put. It's not needed anymore. Remove it. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/bookehv_interrupts.S |8 1 files changed, 0 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index c5a0796..469bd3f 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -35,9 +35,6 @@ #define GET_VCPU(vcpu, thread) \ PPC_LL vcpu, THREAD_KVM_VCPU(thread) -#define SET_VCPU(vcpu) \ -PPC_STLvcpu, (THREAD + THREAD_KVM_VCPU)(r2) - #define LONGBYTES (BITS_PER_LONG / 8) #define VCPU_GPR(n)(VCPU_GPRS + (n * LONGBYTES)) @@ -517,11 +514,6 @@ lightweight_exit: lwz r3, VCPU_GUEST_PID(r4) mtspr SPRN_PID, r3 - /* Save vcpu pointer for the exception handlers -* must be done before loading guest r2. -*/ -// SET_VCPU(r4) - PPC_LL r11, VCPU_SHARED(r4) /* Save host mas4 and mas6 and load guest MAS registers */ mfspr r3, SPRN_MAS4 -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 27/38] KVM: PPC: bookehv: remove negation for CONFIG_64BIT
Instead if doing #ifndef CONFIG_64BIT ... #else ... #endif we should rather do #ifdef CONFIG_64BIT ... #else ... #endif which is a lot easier to read. Change the bookehv implementation to stick with this rule. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/bookehv_interrupts.S | 24 1 files changed, 12 insertions(+), 12 deletions(-) diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index 215381e..c5a0796 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -99,10 +99,10 @@ .endif orisr8, r6, MSR_CE@h -#ifndef CONFIG_64BIT - stw r6, (VCPU_SHARED_MSR + 4)(r11) -#else +#ifdef CONFIG_64BIT std r6, (VCPU_SHARED_MSR)(r11) +#else + stw r6, (VCPU_SHARED_MSR + 4)(r11) #endif ori r8, r8, MSR_ME | MSR_RI PPC_STL r5, VCPU_PC(r4) @@ -344,10 +344,10 @@ _GLOBAL(kvmppc_resume_host) stw r5, VCPU_SHARED_MAS0(r11) mfspr r7, SPRN_MAS2 stw r6, VCPU_SHARED_MAS1(r11) -#ifndef CONFIG_64BIT - stw r7, (VCPU_SHARED_MAS2 + 4)(r11) -#else +#ifdef CONFIG_64BIT std r7, (VCPU_SHARED_MAS2)(r11) +#else + stw r7, (VCPU_SHARED_MAS2 + 4)(r11) #endif mfspr r5, SPRN_MAS3 mfspr r6, SPRN_MAS4 @@ -530,10 +530,10 @@ lightweight_exit: stw r3, VCPU_HOST_MAS6(r4) lwz r3, VCPU_SHARED_MAS0(r11) lwz r5, VCPU_SHARED_MAS1(r11) -#ifndef CONFIG_64BIT - lwz r6, (VCPU_SHARED_MAS2 + 4)(r11) -#else +#ifdef CONFIG_64BIT ld r6, (VCPU_SHARED_MAS2)(r11) +#else + lwz r6, (VCPU_SHARED_MAS2 + 4)(r11) #endif lwz r7, VCPU_SHARED_MAS7_3+4(r11) lwz r8, VCPU_SHARED_MAS4(r11) @@ -572,10 +572,10 @@ lightweight_exit: PPC_LL r6, VCPU_CTR(r4) PPC_LL r7, VCPU_CR(r4) PPC_LL r8, VCPU_PC(r4) -#ifndef CONFIG_64BIT - lwz r9, (VCPU_SHARED_MSR + 4)(r11) -#else +#ifdef CONFIG_64BIT ld r9, (VCPU_SHARED_MSR)(r11) +#else + lwz r9, (VCPU_SHARED_MSR + 4)(r11) #endif PPC_LL r0, VCPU_GPR(r0)(r4) PPC_LL r1, VCPU_GPR(r1)(r4) -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 20/38] KVM: PPC: rename CONFIG_KVM_E500 - CONFIG_KVM_E500V2
The CONFIG_KVM_E500 option really indicates that we're running on a V2 machine,
not on a machine of the generic E500 class. So indicate that properly and
change the config name accordingly.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/Kconfig|8
arch/powerpc/kvm/Makefile |4 ++--
arch/powerpc/kvm/booke.c|2 +-
arch/powerpc/kvm/e500.h |6 +++---
arch/powerpc/kvm/e500_tlb.c |2 +-
arch/powerpc/kvm/powerpc.c |8
6 files changed, 15 insertions(+), 15 deletions(-)
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index 58f6e68..44a998d 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -109,7 +109,7 @@ config KVM_440
config KVM_EXIT_TIMING
bool Detailed exit timing
- depends on KVM_440 || KVM_E500 || KVM_E500MC
+ depends on KVM_440 || KVM_E500V2 || KVM_E500MC
---help---
Calculate elapsed time for every exit/enter cycle. A per-vcpu
report is available in debugfs kvm/vm#_vcpu#_timing.
@@ -118,14 +118,14 @@ config KVM_EXIT_TIMING
If unsure, say N.
-config KVM_E500
- bool KVM support for PowerPC E500 processors
+config KVM_E500V2
+ bool KVM support for PowerPC E500v2 processors
depends on EXPERIMENTAL E500
select KVM
select KVM_MMIO
---help---
Support running unmodified E500 guest kernels in virtual machines on
- E500 host processors.
+ E500v2 host processors.
This module provides access to the hardware capabilities through
a character device node named /dev/kvm.
diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile
index 62febd7..25225ae 100644
--- a/arch/powerpc/kvm/Makefile
+++ b/arch/powerpc/kvm/Makefile
@@ -36,7 +36,7 @@ kvm-e500-objs := \
e500.o \
e500_tlb.o \
e500_emulate.o
-kvm-objs-$(CONFIG_KVM_E500) := $(kvm-e500-objs)
+kvm-objs-$(CONFIG_KVM_E500V2) := $(kvm-e500-objs)
kvm-e500mc-objs := \
$(common-objs-y) \
@@ -98,7 +98,7 @@ kvm-objs-$(CONFIG_KVM_BOOK3S_32) := $(kvm-book3s_32-objs)
kvm-objs := $(kvm-objs-m) $(kvm-objs-y)
obj-$(CONFIG_KVM_440) += kvm.o
-obj-$(CONFIG_KVM_E500) += kvm.o
+obj-$(CONFIG_KVM_E500V2) += kvm.o
obj-$(CONFIG_KVM_E500MC) += kvm.o
obj-$(CONFIG_KVM_BOOK3S_64) += kvm.o
obj-$(CONFIG_KVM_BOOK3S_32) += kvm.o
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index fcbe928..9fcc760 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -762,7 +762,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu
*vcpu,
gpa_t gpaddr;
gfn_t gfn;
-#ifdef CONFIG_KVM_E500
+#ifdef CONFIG_KVM_E500V2
if (!(vcpu-arch.shared-msr MSR_PR)
(eaddr PAGE_MASK) == vcpu-arch.magic_page_ea) {
kvmppc_map_magic(vcpu);
diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h
index 3143085..7967f3f 100644
--- a/arch/powerpc/kvm/e500.h
+++ b/arch/powerpc/kvm/e500.h
@@ -39,7 +39,7 @@ struct tlbe_priv {
struct tlbe_ref ref; /* TLB0 only -- TLB1 uses tlb_refs */
};
-#ifdef CONFIG_KVM_E500
+#ifdef CONFIG_KVM_E500V2
struct vcpu_id_table;
#endif
@@ -89,7 +89,7 @@ struct kvmppc_vcpu_e500 {
u64 *g2h_tlb1_map;
unsigned int *h2g_tlb1_rmap;
-#ifdef CONFIG_KVM_E500
+#ifdef CONFIG_KVM_E500V2
u32 pid[E500_PID_NUM];
/* vcpu id table */
@@ -136,7 +136,7 @@ void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu,
struct kvm_sregs *sregs);
int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
-#ifdef CONFIG_KVM_E500
+#ifdef CONFIG_KVM_E500V2
unsigned int kvmppc_e500_get_sid(struct kvmppc_vcpu_e500 *vcpu_e500,
unsigned int as, unsigned int gid,
unsigned int pr, int avoid_recursion);
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c
index e232bb4..279e10a 100644
--- a/arch/powerpc/kvm/e500_tlb.c
+++ b/arch/powerpc/kvm/e500_tlb.c
@@ -156,7 +156,7 @@ static inline void write_host_tlbe(struct kvmppc_vcpu_e500
*vcpu_e500,
}
}
-#ifdef CONFIG_KVM_E500
+#ifdef CONFIG_KVM_E500V2
void kvmppc_map_magic(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 58a084f..26c6a8d 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -74,7 +74,7 @@ int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
}
case HC_VENDOR_KVM | KVM_HC_FEATURES:
r = HC_EV_SUCCESS;
-#if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500)
+#if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
/* XXX Missing magic page on 44x */
r2 |= (1 KVM_FEATURE_MAGIC_PAGE);
#endif
@@ -230,7 +230,7 @@ int kvm_dev_ioctl_check_extension(long ext)
case
[PATCH 25/38] KVM: PPC: booke: BOOKE_IRQPRIO_MAX is n+1
The semantics of BOOKE_IRQPRIO_MAX changed to denote the highest available
irqprio + 1, so let's reflect that in the code too.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/booke.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 3da0e42..11b0625 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -425,7 +425,7 @@ static void kvmppc_core_check_exceptions(struct kvm_vcpu
*vcpu)
}
priority = __ffs(*pending);
- while (priority = BOOKE_IRQPRIO_MAX) {
+ while (priority BOOKE_IRQPRIO_MAX) {
if (kvmppc_booke_irqprio_deliver(vcpu, priority))
break;
--
1.6.0.2
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[PATCH 26/38] KVM: PPC: bookehv: fix exit timing
When using exit timing stats, we clobber r9 in the NEED_EMU case, so better move that part down a few lines and fix it that way. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/bookehv_interrupts.S |8 1 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index f7dc3f6..215381e 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -83,10 +83,6 @@ stw r10, VCPU_GUEST_PID(r4) mtspr SPRN_PID, r8 - .if \flags NEED_EMU - lwz r9, VCPU_KVM(r4) - .endif - #ifdef CONFIG_KVM_EXIT_TIMING /* save exit time */ 1: mfspr r7, SPRN_TBRU @@ -98,6 +94,10 @@ PPC_STL r9, VCPU_TIMING_EXIT_TBU(r4) #endif + .if \flags NEED_EMU + lwz r9, VCPU_KVM(r4) + .endif + orisr8, r6, MSR_CE@h #ifndef CONFIG_64BIT stw r6, (VCPU_SHARED_MSR + 4)(r11) -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 24/38] KVM: PPC: booke: rework rescheduling checks
Instead of checking whether we should reschedule only when we exited
due to an interrupt, let's always check before entering the guest back
again. This gets the target more in line with the other archs.
Also while at it, generalize the whole thing so that eventually we could
have a single kvmppc_prepare_to_enter function for all ppc targets that
does signal and reschedule checking for us.
Signed-off-by: Alexander Graf ag...@suse.de
---
v2 - v3:
- check for signals earlier
---
arch/powerpc/include/asm/kvm_ppc.h |2 +-
arch/powerpc/kvm/book3s.c |4 +-
arch/powerpc/kvm/booke.c | 72 +---
3 files changed, 54 insertions(+), 24 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h
b/arch/powerpc/include/asm/kvm_ppc.h
index e709975..7f0a3da 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -95,7 +95,7 @@ extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
-extern void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
+extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 7d54f4e..c8ead7b 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -258,7 +258,7 @@ static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned
int priority)
return true;
}
-void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
+int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
{
unsigned long *pending = vcpu-arch.pending_exceptions;
unsigned long old_pending = vcpu-arch.pending_exceptions;
@@ -283,6 +283,8 @@ void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
/* Tell the guest about our interrupt status */
kvmppc_update_int_pending(vcpu, *pending, old_pending);
+
+ return 0;
}
pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 9979be1..3da0e42 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -439,8 +439,9 @@ static void kvmppc_core_check_exceptions(struct kvm_vcpu
*vcpu)
}
/* Check pending exceptions and deliver one, if possible. */
-void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
+int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
{
+ int r = 0;
WARN_ON_ONCE(!irqs_disabled());
kvmppc_core_check_exceptions(vcpu);
@@ -451,8 +452,46 @@ void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
local_irq_disable();
kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
- kvmppc_core_check_exceptions(vcpu);
+ r = 1;
};
+
+ return r;
+}
+
+/*
+ * Common checks before entering the guest world. Call with interrupts
+ * disabled.
+ *
+ * returns !0 if a signal is pending and check_signal is true
+ */
+static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu, bool check_signal)
+{
+ int r = 0;
+
+ WARN_ON_ONCE(!irqs_disabled());
+ while (true) {
+ if (need_resched()) {
+ local_irq_enable();
+ cond_resched();
+ local_irq_disable();
+ continue;
+ }
+
+ if (check_signal signal_pending(current)) {
+ r = 1;
+ break;
+ }
+
+ if (kvmppc_core_prepare_to_enter(vcpu)) {
+ /* interrupts got enabled in between, so we
+ are back at square 1 */
+ continue;
+ }
+
+ break;
+ }
+
+ return r;
}
int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
@@ -470,10 +509,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct
kvm_vcpu *vcpu)
}
local_irq_disable();
-
- kvmppc_core_prepare_to_enter(vcpu);
-
- if (signal_pending(current)) {
+ if (kvmppc_prepare_to_enter(vcpu, true)) {
kvm_run-exit_reason = KVM_EXIT_INTR;
ret = -EINTR;
goto out;
@@ -598,25 +634,21 @@ int kvmppc_handle_exit(struct kvm_run *run, struct
kvm_vcpu *vcpu,
switch (exit_nr) {
case BOOKE_INTERRUPT_MACHINE_CHECK:
- kvm_resched(vcpu);
r = RESUME_GUEST;
break;
case BOOKE_INTERRUPT_EXTERNAL:
kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
- kvm_resched(vcpu);
r = RESUME_GUEST;
break;
case
[PATCH 16/38] KVM: PPC: e500mc: Add doorbell emulation support
When one vcpu wants to kick another, it can issue a special IPI instruction
called msgsnd. This patch emulates this instruction, its clearing counterpart
and the infrastructure required to actually trigger that interrupt inside
a guest vcpu.
With this patch, SMP guests on e500mc work.
Signed-off-by: Alexander Graf ag...@suse.de
---
v1 - v2:
- introduce and use constants
- drop e500mc ifdefs
---
arch/powerpc/include/asm/dbell.h |2 +
arch/powerpc/kvm/booke.c |2 +
arch/powerpc/kvm/e500_emulate.c | 68 ++
3 files changed, 72 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/dbell.h b/arch/powerpc/include/asm/dbell.h
index d7365b0..154c067 100644
--- a/arch/powerpc/include/asm/dbell.h
+++ b/arch/powerpc/include/asm/dbell.h
@@ -19,7 +19,9 @@
#define PPC_DBELL_MSG_BRDCAST (0x0400)
#define PPC_DBELL_TYPE(x) (((x) 0xf) (63-36))
+#define PPC_DBELL_TYPE_MASKPPC_DBELL_TYPE(0xf)
#define PPC_DBELL_LPID(x) ((x) (63 - 49))
+#define PPC_DBELL_PIR_MASK 0x3fff
enum ppc_dbell {
PPC_DBELL = 0, /* doorbell */
PPC_DBELL_CRIT = 1, /* critical doorbell */
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 0b77be1..85bd5b8 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -326,6 +326,7 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu
*vcpu,
int_class = INT_CLASS_NONCRIT;
break;
case BOOKE_IRQPRIO_CRITICAL:
+ case BOOKE_IRQPRIO_DBELL_CRIT:
allowed = vcpu-arch.shared-msr MSR_CE;
allowed = allowed !crit;
msr_mask = MSR_GS | MSR_ME;
@@ -342,6 +343,7 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu
*vcpu,
keep_irq = true;
/* fall through */
case BOOKE_IRQPRIO_EXTERNAL:
+ case BOOKE_IRQPRIO_DBELL:
allowed = vcpu-arch.shared-msr MSR_EE;
allowed = allowed !crit;
msr_mask = MSR_GS | MSR_CE | MSR_ME | MSR_DE;
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index 98b6c1c..99155f8 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -14,16 +14,74 @@
#include asm/kvm_ppc.h
#include asm/disassemble.h
+#include asm/dbell.h
#include booke.h
#include e500.h
+#define XOP_MSGSND 206
+#define XOP_MSGCLR 238
#define XOP_TLBIVAX 786
#define XOP_TLBSX 914
#define XOP_TLBRE 946
#define XOP_TLBWE 978
#define XOP_TLBILX 18
+#ifdef CONFIG_KVM_E500MC
+static int dbell2prio(ulong param)
+{
+ int msg = param PPC_DBELL_TYPE_MASK;
+ int prio = -1;
+
+ switch (msg) {
+ case PPC_DBELL_TYPE(PPC_DBELL):
+ prio = BOOKE_IRQPRIO_DBELL;
+ break;
+ case PPC_DBELL_TYPE(PPC_DBELL_CRIT):
+ prio = BOOKE_IRQPRIO_DBELL_CRIT;
+ break;
+ default:
+ break;
+ }
+
+ return prio;
+}
+
+static int kvmppc_e500_emul_msgclr(struct kvm_vcpu *vcpu, int rb)
+{
+ ulong param = vcpu-arch.gpr[rb];
+ int prio = dbell2prio(param);
+
+ if (prio 0)
+ return EMULATE_FAIL;
+
+ clear_bit(prio, vcpu-arch.pending_exceptions);
+ return EMULATE_DONE;
+}
+
+static int kvmppc_e500_emul_msgsnd(struct kvm_vcpu *vcpu, int rb)
+{
+ ulong param = vcpu-arch.gpr[rb];
+ int prio = dbell2prio(rb);
+ int pir = param PPC_DBELL_PIR_MASK;
+ int i;
+ struct kvm_vcpu *cvcpu;
+
+ if (prio 0)
+ return EMULATE_FAIL;
+
+ kvm_for_each_vcpu(i, cvcpu, vcpu-kvm) {
+ int cpir = cvcpu-arch.shared-pir;
+ if ((param PPC_DBELL_MSG_BRDCAST) || (cpir == pir)) {
+ set_bit(prio, cvcpu-arch.pending_exceptions);
+ kvm_vcpu_kick(cvcpu);
+ }
+ }
+
+ return EMULATE_DONE;
+}
+#endif
+
int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
{
@@ -36,6 +94,16 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct
kvm_vcpu *vcpu,
case 31:
switch (get_xop(inst)) {
+#ifdef CONFIG_KVM_E500MC
+ case XOP_MSGSND:
+ emulated = kvmppc_e500_emul_msgsnd(vcpu, get_rb(inst));
+ break;
+
+ case XOP_MSGCLR:
+ emulated = kvmppc_e500_emul_msgclr(vcpu, get_rb(inst));
+ break;
+#endif
+
case XOP_TLBRE:
emulated = kvmppc_e500_emul_tlbre(vcpu);
break;
--
1.6.0.2
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[PATCH 12/38] powerpc/booke: Provide exception macros with interrupt name
From: Scott Wood scottw...@freescale.com DO_KVM will need to identify the particular exception type. There is an existing set of arbitrary numbers that Linux passes, but it's an undocumented mess that sort of corresponds to server/classic exception vectors but not really. Signed-off-by: Scott Wood scottw...@freescale.com Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kernel/head_44x.S | 23 +-- arch/powerpc/kernel/head_booke.h | 41 ++ arch/powerpc/kernel/head_fsl_booke.S | 52 +- 3 files changed, 68 insertions(+), 48 deletions(-) diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S index 7dd2981..d1192c5 100644 --- a/arch/powerpc/kernel/head_44x.S +++ b/arch/powerpc/kernel/head_44x.S @@ -248,10 +248,11 @@ _ENTRY(_start); interrupt_base: /* Critical Input Interrupt */ - CRITICAL_EXCEPTION(0x0100, CriticalInput, unknown_exception) + CRITICAL_EXCEPTION(0x0100, CRITICAL, CriticalInput, unknown_exception) /* Machine Check Interrupt */ - CRITICAL_EXCEPTION(0x0200, MachineCheck, machine_check_exception) + CRITICAL_EXCEPTION(0x0200, MACHINE_CHECK, MachineCheck, \ + machine_check_exception) MCHECK_EXCEPTION(0x0210, MachineCheckA, machine_check_exception) /* Data Storage Interrupt */ @@ -261,7 +262,8 @@ interrupt_base: INSTRUCTION_STORAGE_EXCEPTION /* External Input Interrupt */ - EXCEPTION(0x0500, ExternalInput, do_IRQ, EXC_XFER_LITE) + EXCEPTION(0x0500, BOOKE_INTERRUPT_EXTERNAL, ExternalInput, \ + do_IRQ, EXC_XFER_LITE) /* Alignment Interrupt */ ALIGNMENT_EXCEPTION @@ -273,29 +275,32 @@ interrupt_base: #ifdef CONFIG_PPC_FPU FP_UNAVAILABLE_EXCEPTION #else - EXCEPTION(0x2010, FloatingPointUnavailable, unknown_exception, EXC_XFER_EE) + EXCEPTION(0x2010, BOOKE_INTERRUPT_FP_UNAVAIL, \ + FloatingPointUnavailable, unknown_exception, EXC_XFER_EE) #endif /* System Call Interrupt */ START_EXCEPTION(SystemCall) - NORMAL_EXCEPTION_PROLOG + NORMAL_EXCEPTION_PROLOG(BOOKE_INTERRUPT_SYSCALL) EXC_XFER_EE_LITE(0x0c00, DoSyscall) /* Auxiliary Processor Unavailable Interrupt */ - EXCEPTION(0x2020, AuxillaryProcessorUnavailable, unknown_exception, EXC_XFER_EE) + EXCEPTION(0x2020, BOOKE_INTERRUPT_AP_UNAVAIL, \ + AuxillaryProcessorUnavailable, unknown_exception, EXC_XFER_EE) /* Decrementer Interrupt */ DECREMENTER_EXCEPTION /* Fixed Internal Timer Interrupt */ /* TODO: Add FIT support */ - EXCEPTION(0x1010, FixedIntervalTimer, unknown_exception, EXC_XFER_EE) + EXCEPTION(0x1010, BOOKE_INTERRUPT_FIT, FixedIntervalTimer, \ + unknown_exception, EXC_XFER_EE) /* Watchdog Timer Interrupt */ /* TODO: Add watchdog support */ #ifdef CONFIG_BOOKE_WDT - CRITICAL_EXCEPTION(0x1020, WatchdogTimer, WatchdogException) + CRITICAL_EXCEPTION(0x1020, WATCHDOG, WatchdogTimer, WatchdogException) #else - CRITICAL_EXCEPTION(0x1020, WatchdogTimer, unknown_exception) + CRITICAL_EXCEPTION(0x1020, WATCHDOG, WatchdogTimer, unknown_exception) #endif /* Data TLB Error Interrupt */ diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index fc921bf..06ab353 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -2,6 +2,8 @@ #define __HEAD_BOOKE_H__ #include asm/ptrace.h/* for STACK_FRAME_REGS_MARKER */ +#include asm/kvm_asm.h + /* * Macros used for common Book-e exception handling */ @@ -28,7 +30,7 @@ */ #define THREAD_NORMSAVE(offset)(THREAD_NORMSAVES + (offset * 4)) -#define NORMAL_EXCEPTION_PROLOG \ +#define NORMAL_EXCEPTION_PROLOG(intno) \ mtspr SPRN_SPRG_WSCRATCH0, r10; /* save one register */ \ mfspr r10, SPRN_SPRG_THREAD; \ stw r11, THREAD_NORMSAVE(0)(r10);\ @@ -113,7 +115,7 @@ * registers as the normal prolog above. Instead we use a portion of the * critical/machine check exception stack at low physical addresses. */ -#define EXC_LEVEL_EXCEPTION_PROLOG(exc_level, exc_level_srr0, exc_level_srr1) \ +#define EXC_LEVEL_EXCEPTION_PROLOG(exc_level, intno, exc_level_srr0, exc_level_srr1) \ mtspr SPRN_SPRG_WSCRATCH_##exc_level,r8; \ BOOKE_LOAD_EXC_LEVEL_STACK(exc_level);/* r8 points to the exc_level stack*/ \ stw r9,GPR9(r8);/* save various registers */\ @@ -162,12 +164,13 @@ SAVE_4GPRS(3, r11); \ SAVE_2GPRS(7, r11)
[PATCH 17/38] KVM: PPC: e500mc: implicitly set MSR_GS
When setting MSR for an e500mc guest, we implicitly always set MSR_GS
to make sure the guest is in guest state. Since we have this implicit
rule there, we don't need to explicitly pass MSR_GS to set_msr().
Remove all explicit setters of MSR_GS.
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/booke.c | 11 +--
1 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 85bd5b8..fcbe928 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -280,7 +280,7 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu
*vcpu,
unsigned int priority)
{
int allowed = 0;
- ulong uninitialized_var(msr_mask);
+ ulong msr_mask = 0;
bool update_esr = false, update_dear = false;
ulong crit_raw = vcpu-arch.shared-critical;
ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
@@ -322,20 +322,19 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu
*vcpu,
case BOOKE_IRQPRIO_AP_UNAVAIL:
case BOOKE_IRQPRIO_ALIGNMENT:
allowed = 1;
- msr_mask = MSR_GS | MSR_CE | MSR_ME | MSR_DE;
+ msr_mask = MSR_CE | MSR_ME | MSR_DE;
int_class = INT_CLASS_NONCRIT;
break;
case BOOKE_IRQPRIO_CRITICAL:
case BOOKE_IRQPRIO_DBELL_CRIT:
allowed = vcpu-arch.shared-msr MSR_CE;
allowed = allowed !crit;
- msr_mask = MSR_GS | MSR_ME;
+ msr_mask = MSR_ME;
int_class = INT_CLASS_CRIT;
break;
case BOOKE_IRQPRIO_MACHINE_CHECK:
allowed = vcpu-arch.shared-msr MSR_ME;
allowed = allowed !crit;
- msr_mask = MSR_GS;
int_class = INT_CLASS_MC;
break;
case BOOKE_IRQPRIO_DECREMENTER:
@@ -346,13 +345,13 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu
*vcpu,
case BOOKE_IRQPRIO_DBELL:
allowed = vcpu-arch.shared-msr MSR_EE;
allowed = allowed !crit;
- msr_mask = MSR_GS | MSR_CE | MSR_ME | MSR_DE;
+ msr_mask = MSR_CE | MSR_ME | MSR_DE;
int_class = INT_CLASS_NONCRIT;
break;
case BOOKE_IRQPRIO_DEBUG:
allowed = vcpu-arch.shared-msr MSR_DE;
allowed = allowed !crit;
- msr_mask = MSR_GS | MSR_ME;
+ msr_mask = MSR_ME;
int_class = INT_CLASS_CRIT;
break;
}
--
1.6.0.2
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[PATCH 11/38] KVM: PPC: e500: emulate tlbilx
From: Scott Wood scottw...@freescale.com
tlbilx is the new, preferred invalidation instruction. It is not
found on e500 prior to e500mc, but there should be no harm in
supporting it on all e500.
Based on code from Ashish Kalra ashish.ka...@freescale.com.
Signed-off-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/e500.h |1 +
arch/powerpc/kvm/e500_emulate.c |9 ++
arch/powerpc/kvm/e500_tlb.c | 52 +++
3 files changed, 62 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h
index f4dee55..ce3f163 100644
--- a/arch/powerpc/kvm/e500.h
+++ b/arch/powerpc/kvm/e500.h
@@ -124,6 +124,7 @@ int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500
*vcpu_e500,
int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu);
int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu);
int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb);
+int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int rt, int ra, int rb);
int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb);
int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500);
void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500);
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index c80794d..af02c18 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -22,6 +22,7 @@
#define XOP_TLBSX 914
#define XOP_TLBRE 946
#define XOP_TLBWE 978
+#define XOP_TLBILX 18
int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int inst, int *advance)
@@ -29,6 +30,7 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct
kvm_vcpu *vcpu,
int emulated = EMULATE_DONE;
int ra;
int rb;
+ int rt;
switch (get_op(inst)) {
case 31:
@@ -47,6 +49,13 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct
kvm_vcpu *vcpu,
emulated = kvmppc_e500_emul_tlbsx(vcpu,rb);
break;
+ case XOP_TLBILX:
+ ra = get_ra(inst);
+ rb = get_rb(inst);
+ rt = get_rt(inst);
+ emulated = kvmppc_e500_emul_tlbilx(vcpu, rt, ra, rb);
+ break;
+
case XOP_TLBIVAX:
ra = get_ra(inst);
rb = get_rb(inst);
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c
index c8ce51d..6eb5d65 100644
--- a/arch/powerpc/kvm/e500_tlb.c
+++ b/arch/powerpc/kvm/e500_tlb.c
@@ -631,6 +631,58 @@ int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int
ra, int rb)
return EMULATE_DONE;
}
+static void tlbilx_all(struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel,
+ int pid, int rt)
+{
+ struct kvm_book3e_206_tlb_entry *tlbe;
+ int tid, esel;
+
+ /* invalidate all entries */
+ for (esel = 0; esel vcpu_e500-gtlb_params[tlbsel].entries; esel++) {
+ tlbe = get_entry(vcpu_e500, tlbsel, esel);
+ tid = get_tlb_tid(tlbe);
+ if (rt == 0 || tid == pid) {
+ inval_gtlbe_on_host(vcpu_e500, tlbsel, esel);
+ kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
+ }
+ }
+}
+
+static void tlbilx_one(struct kvmppc_vcpu_e500 *vcpu_e500, int pid,
+ int ra, int rb)
+{
+ int tlbsel, esel;
+ gva_t ea;
+
+ ea = kvmppc_get_gpr(vcpu_e500-vcpu, rb);
+ if (ra)
+ ea += kvmppc_get_gpr(vcpu_e500-vcpu, ra);
+
+ for (tlbsel = 0; tlbsel 2; tlbsel++) {
+ esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, -1);
+ if (esel = 0) {
+ inval_gtlbe_on_host(vcpu_e500, tlbsel, esel);
+ kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
+ break;
+ }
+ }
+}
+
+int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int rt, int ra, int rb)
+{
+ struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
+ int pid = get_cur_spid(vcpu);
+
+ if (rt == 0 || rt == 1) {
+ tlbilx_all(vcpu_e500, 0, pid, rt);
+ tlbilx_all(vcpu_e500, 1, pid, rt);
+ } else if (rt == 3) {
+ tlbilx_one(vcpu_e500, pid, ra, rb);
+ }
+
+ return EMULATE_DONE;
+}
+
int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
--
1.6.0.2
--
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[PATCH 05/38] KVM: PPC: booke: Move vm core init/destroy out of booke.c
From: Scott Wood scottw...@freescale.com
e500mc will want to do lpid allocation/deallocation here.
Signed-off-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/44x.c |9 +
arch/powerpc/kvm/booke.c |9 -
arch/powerpc/kvm/e500.c |9 +
3 files changed, 18 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/kvm/44x.c b/arch/powerpc/kvm/44x.c
index 879a1a7..50e7dbc 100644
--- a/arch/powerpc/kvm/44x.c
+++ b/arch/powerpc/kvm/44x.c
@@ -163,6 +163,15 @@ void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
kmem_cache_free(kvm_vcpu_cache, vcpu_44x);
}
+int kvmppc_core_init_vm(struct kvm *kvm)
+{
+ return 0;
+}
+
+void kvmppc_core_destroy_vm(struct kvm *kvm)
+{
+}
+
static int __init kvmppc_44x_init(void)
{
int r;
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index a2456c7..2ee9bae 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -932,15 +932,6 @@ void kvmppc_core_commit_memory_region(struct kvm *kvm,
{
}
-int kvmppc_core_init_vm(struct kvm *kvm)
-{
- return 0;
-}
-
-void kvmppc_core_destroy_vm(struct kvm *kvm)
-{
-}
-
void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr)
{
vcpu-arch.tcr = new_tcr;
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index 2d5fe04..ac6c9ae 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -226,6 +226,15 @@ void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
kmem_cache_free(kvm_vcpu_cache, vcpu_e500);
}
+int kvmppc_core_init_vm(struct kvm *kvm)
+{
+ return 0;
+}
+
+void kvmppc_core_destroy_vm(struct kvm *kvm)
+{
+}
+
static int __init kvmppc_e500_init(void)
{
int r, i;
--
1.6.0.2
--
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[PATCH 08/38] KVM: PPC: e500: clean up arch/powerpc/kvm/e500.h
From: Scott Wood scottw...@freescale.com
Move vcpu to the beginning of vcpu_e500 to give it appropriate
prominence, especially if more fields end up getting added to the
end of vcpu_e500 (and vcpu ends up in the middle).
Remove gratuitous extern and add parameter names to prototypes.
Signed-off-by: Scott Wood scottw...@freescale.com
[agraf: fix bisectability]
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/e500.h | 25 ++---
1 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h
index 51d13bd..a48af00 100644
--- a/arch/powerpc/kvm/e500.h
+++ b/arch/powerpc/kvm/e500.h
@@ -42,6 +42,8 @@ struct kvmppc_e500_tlb_params {
};
struct kvmppc_vcpu_e500 {
+ struct kvm_vcpu vcpu;
+
/* Unmodified copy of the guest's TLB -- shared with host userspace. */
struct kvm_book3e_206_tlb_entry *gtlb_arch;
@@ -85,8 +87,6 @@ struct kvmppc_vcpu_e500 {
struct page **shared_tlb_pages;
int num_shared_tlb_pages;
-
- struct kvm_vcpu vcpu;
};
static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu)
@@ -113,19 +113,22 @@ static inline struct kvmppc_vcpu_e500 *to_e500(struct
kvm_vcpu *vcpu)
(MAS3_U0 | MAS3_U1 | MAS3_U2 | MAS3_U3 \
| E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK)
-extern void kvmppc_dump_tlbs(struct kvm_vcpu *);
-extern int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *, ulong);
-extern int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *);
-extern int kvmppc_e500_emul_tlbre(struct kvm_vcpu *);
-extern int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *, int, int);
-extern int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *, int);
-extern int kvmppc_e500_tlb_search(struct kvm_vcpu *, gva_t, unsigned int, int);
extern void kvmppc_e500_tlb_put(struct kvm_vcpu *);
extern void kvmppc_e500_tlb_load(struct kvm_vcpu *, int);
-extern int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *);
-extern void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *);
extern void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *);
extern void kvmppc_e500_recalc_shadow_pid(struct kvmppc_vcpu_e500 *);
+int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500,
+ ulong value);
+int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu);
+int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu);
+int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb);
+int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb);
+int kvmppc_e500_tlb_search(struct kvm_vcpu *, gva_t, unsigned int, int);
+int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500);
+void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500);
+
+void kvmppc_get_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
+int kvmppc_set_sregs_e500_tlb(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
/* TLB helper functions */
static inline unsigned int
--
1.6.0.2
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[PATCH 03/38] KVM: PPC: factor out lpid allocator from book3s_64_mmu_hv
From: Scott Wood scottw...@freescale.com
We'll use it on e500mc as well.
Signed-off-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/kvm_book3s.h |3 ++
arch/powerpc/include/asm/kvm_booke.h |3 ++
arch/powerpc/include/asm/kvm_ppc.h|5
arch/powerpc/kvm/book3s_64_mmu_hv.c | 26 +---
arch/powerpc/kvm/powerpc.c| 34 +
5 files changed, 55 insertions(+), 16 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_book3s.h
b/arch/powerpc/include/asm/kvm_book3s.h
index aa795cc..046041f 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -452,4 +452,7 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu
*vcpu)
#define INS_DCBZ 0x7c0007ec
+/* LPIDs we support with this build -- runtime limit may be lower */
+#define KVMPPC_NR_LPIDS(LPID_RSVD + 1)
+
#endif /* __ASM_KVM_BOOK3S_H__ */
diff --git a/arch/powerpc/include/asm/kvm_booke.h
b/arch/powerpc/include/asm/kvm_booke.h
index a90e091..b7cd335 100644
--- a/arch/powerpc/include/asm/kvm_booke.h
+++ b/arch/powerpc/include/asm/kvm_booke.h
@@ -23,6 +23,9 @@
#include linux/types.h
#include linux/kvm_host.h
+/* LPIDs we support with this build -- runtime limit may be lower */
+#define KVMPPC_NR_LPIDS64
+
static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
{
vcpu-arch.gpr[num] = val;
diff --git a/arch/powerpc/include/asm/kvm_ppc.h
b/arch/powerpc/include/asm/kvm_ppc.h
index 9d6dee0..731e920 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -204,4 +204,9 @@ int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
struct kvm_dirty_tlb *cfg);
+long kvmppc_alloc_lpid(void);
+void kvmppc_claim_lpid(long lpid);
+void kvmppc_free_lpid(long lpid);
+void kvmppc_init_lpid(unsigned long nr_lpids);
+
#endif /* __POWERPC_KVM_PPC_H__ */
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c
b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index ddc485a..d031ce1 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -36,13 +36,11 @@
/* POWER7 has 10-bit LPIDs, PPC970 has 6-bit LPIDs */
#define MAX_LPID_970 63
-#define NR_LPIDS (LPID_RSVD + 1)
-unsigned long lpid_inuse[BITS_TO_LONGS(NR_LPIDS)];
long kvmppc_alloc_hpt(struct kvm *kvm)
{
unsigned long hpt;
- unsigned long lpid;
+ long lpid;
struct revmap_entry *rev;
struct kvmppc_linear_info *li;
@@ -72,14 +70,9 @@ long kvmppc_alloc_hpt(struct kvm *kvm)
}
kvm-arch.revmap = rev;
- /* Allocate the guest's logical partition ID */
- do {
- lpid = find_first_zero_bit(lpid_inuse, NR_LPIDS);
- if (lpid = NR_LPIDS) {
- pr_err(kvm_alloc_hpt: No LPIDs free\n);
- goto out_freeboth;
- }
- } while (test_and_set_bit(lpid, lpid_inuse));
+ lpid = kvmppc_alloc_lpid();
+ if (lpid 0)
+ goto out_freeboth;
kvm-arch.sdr1 = __pa(hpt) | (HPT_ORDER - 18);
kvm-arch.lpid = lpid;
@@ -96,7 +89,7 @@ long kvmppc_alloc_hpt(struct kvm *kvm)
void kvmppc_free_hpt(struct kvm *kvm)
{
- clear_bit(kvm-arch.lpid, lpid_inuse);
+ kvmppc_free_lpid(kvm-arch.lpid);
vfree(kvm-arch.revmap);
if (kvm-arch.hpt_li)
kvm_release_hpt(kvm-arch.hpt_li);
@@ -171,8 +164,7 @@ int kvmppc_mmu_hv_init(void)
if (!cpu_has_feature(CPU_FTR_HVMODE))
return -EINVAL;
- memset(lpid_inuse, 0, sizeof(lpid_inuse));
-
+ /* POWER7 has 10-bit LPIDs, PPC970 and e500mc have 6-bit LPIDs */
if (cpu_has_feature(CPU_FTR_ARCH_206)) {
host_lpid = mfspr(SPRN_LPID); /* POWER7 */
rsvd_lpid = LPID_RSVD;
@@ -181,9 +173,11 @@ int kvmppc_mmu_hv_init(void)
rsvd_lpid = MAX_LPID_970;
}
- set_bit(host_lpid, lpid_inuse);
+ kvmppc_init_lpid(rsvd_lpid + 1);
+
+ kvmppc_claim_lpid(host_lpid);
/* rsvd_lpid is reserved for use in partition switching */
- set_bit(rsvd_lpid, lpid_inuse);
+ kvmppc_claim_lpid(rsvd_lpid);
return 0;
}
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 00d7e34..9806ea5 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -808,6 +808,40 @@ out:
return r;
}
+static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
+static unsigned long nr_lpids;
+
+long kvmppc_alloc_lpid(void)
+{
+ long lpid;
+
+ do {
+ lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
+ if (lpid = nr_lpids) {
+ pr_err(%s: No LPIDs
[PATCH 06/38] KVM: PPC: e500: rename e500_tlb.h to e500.h
From: Scott Wood scottw...@freescale.com
This is in preparation for merging in the contents of
arch/powerpc/include/asm/kvm_e500.h.
Signed-off-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/e500.c |2 +-
arch/powerpc/kvm/{e500_tlb.h = e500.h} |6 +++---
arch/powerpc/kvm/e500_emulate.c |2 +-
arch/powerpc/kvm/e500_tlb.c |2 +-
4 files changed, 6 insertions(+), 6 deletions(-)
rename arch/powerpc/kvm/{e500_tlb.h = e500.h} (98%)
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index ac6c9ae..5c450ba 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -24,7 +24,7 @@
#include asm/kvm_ppc.h
#include booke.h
-#include e500_tlb.h
+#include e500.h
void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
{
diff --git a/arch/powerpc/kvm/e500_tlb.h b/arch/powerpc/kvm/e500.h
similarity index 98%
rename from arch/powerpc/kvm/e500_tlb.h
rename to arch/powerpc/kvm/e500.h
index 5c6d2d7..02ecde2 100644
--- a/arch/powerpc/kvm/e500_tlb.h
+++ b/arch/powerpc/kvm/e500.h
@@ -12,8 +12,8 @@
* published by the Free Software Foundation.
*/
-#ifndef __KVM_E500_TLB_H__
-#define __KVM_E500_TLB_H__
+#ifndef KVM_E500_H
+#define KVM_E500_H
#include linux/kvm_host.h
#include asm/mmu-book3e.h
@@ -171,4 +171,4 @@ static inline int tlbe_is_host_safe(const struct kvm_vcpu
*vcpu,
return 1;
}
-#endif /* __KVM_E500_TLB_H__ */
+#endif /* KVM_E500_H */
diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c
index 6d0b2bd..2a1a228 100644
--- a/arch/powerpc/kvm/e500_emulate.c
+++ b/arch/powerpc/kvm/e500_emulate.c
@@ -17,7 +17,7 @@
#include asm/kvm_e500.h
#include booke.h
-#include e500_tlb.h
+#include e500.h
#define XOP_TLBIVAX 786
#define XOP_TLBSX 914
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c
index 6e53e41..1d623a0 100644
--- a/arch/powerpc/kvm/e500_tlb.c
+++ b/arch/powerpc/kvm/e500_tlb.c
@@ -29,7 +29,7 @@
#include asm/kvm_e500.h
#include ../mm/mmu_decl.h
-#include e500_tlb.h
+#include e500.h
#include trace.h
#include timing.h
--
1.6.0.2
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[PATCH 09/38] KVM: PPC: e500: refactor core-specific TLB code
From: Scott Wood scottw...@freescale.com
The PID handling is e500v1/v2-specific, and is moved to e500.c.
The MMU sregs code and kvmppc_core_vcpu_translate will be shared with
e500mc, and is moved from e500.c to e500_tlb.c.
Partially based on patches from Liu Yu yu@freescale.com.
Signed-off-by: Scott Wood scottw...@freescale.com
[agraf: fix bisectability]
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/kvm_host.h |2 +
arch/powerpc/kvm/e500.c | 357 +++
arch/powerpc/kvm/e500.h | 62 -
arch/powerpc/kvm/e500_emulate.c |6 +-
arch/powerpc/kvm/e500_tlb.c | 460 +--
5 files changed, 473 insertions(+), 414 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_host.h
b/arch/powerpc/include/asm/kvm_host.h
index 52eb9c1..47612cc 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -426,6 +426,8 @@ struct kvm_vcpu_arch {
ulong fault_esr;
ulong queued_dear;
ulong queued_esr;
+ u32 tlbcfg[4];
+ u32 mmucfg;
#endif
gpa_t paddr_accessed;
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index 76b35d8..b479ed7 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -22,9 +22,281 @@
#include asm/tlbflush.h
#include asm/kvm_ppc.h
+#include ../mm/mmu_decl.h
#include booke.h
#include e500.h
+struct id {
+ unsigned long val;
+ struct id **pentry;
+};
+
+#define NUM_TIDS 256
+
+/*
+ * This table provide mappings from:
+ * (guestAS,guestTID,guestPR) -- ID of physical cpu
+ * guestAS [0..1]
+ * guestTID[0..255]
+ * guestPR [0..1]
+ * ID [1..255]
+ * Each vcpu keeps one vcpu_id_table.
+ */
+struct vcpu_id_table {
+ struct id id[2][NUM_TIDS][2];
+};
+
+/*
+ * This table provide reversed mappings of vcpu_id_table:
+ * ID -- address of vcpu_id_table item.
+ * Each physical core has one pcpu_id_table.
+ */
+struct pcpu_id_table {
+ struct id *entry[NUM_TIDS];
+};
+
+static DEFINE_PER_CPU(struct pcpu_id_table, pcpu_sids);
+
+/* This variable keeps last used shadow ID on local core.
+ * The valid range of shadow ID is [1..255] */
+static DEFINE_PER_CPU(unsigned long, pcpu_last_used_sid);
+
+/*
+ * Allocate a free shadow id and setup a valid sid mapping in given entry.
+ * A mapping is only valid when vcpu_id_table and pcpu_id_table are match.
+ *
+ * The caller must have preemption disabled, and keep it that way until
+ * it has finished with the returned shadow id (either written into the
+ * TLB or arch.shadow_pid, or discarded).
+ */
+static inline int local_sid_setup_one(struct id *entry)
+{
+ unsigned long sid;
+ int ret = -1;
+
+ sid = ++(__get_cpu_var(pcpu_last_used_sid));
+ if (sid NUM_TIDS) {
+ __get_cpu_var(pcpu_sids).entry[sid] = entry;
+ entry-val = sid;
+ entry-pentry = __get_cpu_var(pcpu_sids).entry[sid];
+ ret = sid;
+ }
+
+ /*
+* If sid == NUM_TIDS, we've run out of sids. We return -1, and
+* the caller will invalidate everything and start over.
+*
+* sid NUM_TIDS indicates a race, which we disable preemption to
+* avoid.
+*/
+ WARN_ON(sid NUM_TIDS);
+
+ return ret;
+}
+
+/*
+ * Check if given entry contain a valid shadow id mapping.
+ * An ID mapping is considered valid only if
+ * both vcpu and pcpu know this mapping.
+ *
+ * The caller must have preemption disabled, and keep it that way until
+ * it has finished with the returned shadow id (either written into the
+ * TLB or arch.shadow_pid, or discarded).
+ */
+static inline int local_sid_lookup(struct id *entry)
+{
+ if (entry entry-val != 0
+ __get_cpu_var(pcpu_sids).entry[entry-val] == entry
+ entry-pentry == __get_cpu_var(pcpu_sids).entry[entry-val])
+ return entry-val;
+ return -1;
+}
+
+/* Invalidate all id mappings on local core -- call with preempt disabled */
+static inline void local_sid_destroy_all(void)
+{
+ __get_cpu_var(pcpu_last_used_sid) = 0;
+ memset(__get_cpu_var(pcpu_sids), 0, sizeof(__get_cpu_var(pcpu_sids)));
+}
+
+static void *kvmppc_e500_id_table_alloc(struct kvmppc_vcpu_e500 *vcpu_e500)
+{
+ vcpu_e500-idt = kzalloc(sizeof(struct vcpu_id_table), GFP_KERNEL);
+ return vcpu_e500-idt;
+}
+
+static void kvmppc_e500_id_table_free(struct kvmppc_vcpu_e500 *vcpu_e500)
+{
+ kfree(vcpu_e500-idt);
+ vcpu_e500-idt = NULL;
+}
+
+/* Map guest pid to shadow.
+ * We use PID to keep shadow of current guest non-zero PID,
+ * and use PID1 to keep shadow of guest zero PID.
+ * So that guest tlbe with TID=0 can be accessed at any time */
+static void kvmppc_e500_recalc_shadow_pid(struct kvmppc_vcpu_e500 *vcpu_e500)
+{
+ preempt_disable();
+ vcpu_e500-vcpu.arch.shadow_pid = kvmppc_e500_get_sid(vcpu_e500,
+
[PATCH 07/38] KVM: PPC: e500: merge asm/kvm_e500.h into arch/powerpc/kvm/e500.h
From: Scott Wood scottw...@freescale.com
Keeping two separate headers for e500-specific things was a
pain, and wasn't even organized along any logical boundary.
There was TLB stuff in asm/kvm_e500.h despite the existence of
arch/powerpc/kvm/e500_tlb.h, and nothing in asm/kvm_e500.h needed
to be referenced from outside arch/powerpc/kvm.
Signed-off-by: Scott Wood scottw...@freescale.com
[agraf: fix bisectability]
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/include/asm/kvm_e500.h | 96 ---
arch/powerpc/kvm/e500.c |1 -
arch/powerpc/kvm/e500.h | 82 --
arch/powerpc/kvm/e500_emulate.c |1 -
arch/powerpc/kvm/e500_tlb.c |1 -
5 files changed, 78 insertions(+), 103 deletions(-)
delete mode 100644 arch/powerpc/include/asm/kvm_e500.h
diff --git a/arch/powerpc/include/asm/kvm_e500.h
b/arch/powerpc/include/asm/kvm_e500.h
deleted file mode 100644
index 8cd50a5..000
--- a/arch/powerpc/include/asm/kvm_e500.h
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
- *
- * Author: Yu Liu, yu@freescale.com
- *
- * Description:
- * This file is derived from arch/powerpc/include/asm/kvm_44x.h,
- * by Hollis Blanchard holl...@us.ibm.com.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2, as
- * published by the Free Software Foundation.
- */
-
-#ifndef __ASM_KVM_E500_H__
-#define __ASM_KVM_E500_H__
-
-#include linux/kvm_host.h
-
-#define BOOKE_INTERRUPT_SIZE 36
-
-#define E500_PID_NUM 3
-#define E500_TLB_NUM 2
-
-#define E500_TLB_VALID 1
-#define E500_TLB_DIRTY 2
-
-struct tlbe_ref {
- pfn_t pfn;
- unsigned int flags; /* E500_TLB_* */
-};
-
-struct tlbe_priv {
- struct tlbe_ref ref; /* TLB0 only -- TLB1 uses tlb_refs */
-};
-
-struct vcpu_id_table;
-
-struct kvmppc_e500_tlb_params {
- int entries, ways, sets;
-};
-
-struct kvmppc_vcpu_e500 {
- /* Unmodified copy of the guest's TLB -- shared with host userspace. */
- struct kvm_book3e_206_tlb_entry *gtlb_arch;
-
- /* Starting entry number in gtlb_arch[] */
- int gtlb_offset[E500_TLB_NUM];
-
- /* KVM internal information associated with each guest TLB entry */
- struct tlbe_priv *gtlb_priv[E500_TLB_NUM];
-
- struct kvmppc_e500_tlb_params gtlb_params[E500_TLB_NUM];
-
- unsigned int gtlb_nv[E500_TLB_NUM];
-
- /*
-* information associated with each host TLB entry --
-* TLB1 only for now. If/when guest TLB1 entries can be
-* mapped with host TLB0, this will be used for that too.
-*
-* We don't want to use this for guest TLB0 because then we'd
-* have the overhead of doing the translation again even if
-* the entry is still in the guest TLB (e.g. we swapped out
-* and back, and our host TLB entries got evicted).
-*/
- struct tlbe_ref *tlb_refs[E500_TLB_NUM];
- unsigned int host_tlb1_nv;
-
- u32 host_pid[E500_PID_NUM];
- u32 pid[E500_PID_NUM];
- u32 svr;
-
- /* vcpu id table */
- struct vcpu_id_table *idt;
-
- u32 l1csr0;
- u32 l1csr1;
- u32 hid0;
- u32 hid1;
- u32 tlb0cfg;
- u32 tlb1cfg;
- u64 mcar;
-
- struct page **shared_tlb_pages;
- int num_shared_tlb_pages;
-
- struct kvm_vcpu vcpu;
-};
-
-static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu)
-{
- return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu);
-}
-
-#endif /* __ASM_KVM_E500_H__ */
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index 5c450ba..76b35d8 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -20,7 +20,6 @@
#include asm/reg.h
#include asm/cputable.h
#include asm/tlbflush.h
-#include asm/kvm_e500.h
#include asm/kvm_ppc.h
#include booke.h
diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h
index 02ecde2..51d13bd 100644
--- a/arch/powerpc/kvm/e500.h
+++ b/arch/powerpc/kvm/e500.h
@@ -1,11 +1,12 @@
/*
* Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
*
- * Author: Yu Liu, yu@freescale.com
+ * Author: Yu Liu yu@freescale.com
*
* Description:
- * This file is based on arch/powerpc/kvm/44x_tlb.h,
- * by Hollis Blanchard holl...@us.ibm.com.
+ * This file is based on arch/powerpc/kvm/44x_tlb.h and
+ * arch/powerpc/include/asm/kvm_44x.h by Hollis Blanchard holl...@us.ibm.com,
+ * Copyright IBM Corp. 2007-2008
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
@@ -18,7 +19,80 @@
#include linux/kvm_host.h
#include asm/mmu-book3e.h
#include asm/tlb.h
-#include asm/kvm_e500.h
+
+#define E500_PID_NUM 3
+#define E500_TLB_NUM 2
+
+#define E500_TLB_VALID 1
+#define
[PATCH 00/38] KVM: PPC: e500mc support v3
This is Scott's e500mc RFC patch set rebased, berobbed of its pt_regs parts and fixed for bisectability. On top of them, I addressed all the comments that I had on the code and that came up in his code as FIXMEs. I verified that this patch set works just fine on e500mc and doesn't break e500v2, so I would say it's good to go as it is, unless someone has strong objections to how things are done. Everything hereafter I would prefer to do based on a working upstream version rather than a downstream fork, as that way exposure is a lot higher. v1 - v2: - ESR - GESR - introduce and use constants for doorbell - drop e500mc ifdefs for doorbell - fix whitespace - use explicit preempt counts in inst fixup - rework e500v2 kconfig patch - add patches 31-37 v2 - v3: - add patch 38 - check for signals earlier - also remove lwzr9, VCPU_KVM(r4) which was as superfluous - sync host state instead of guest state to pt_regs - optimize reinject code path to get out fast when not reinjecting Alexander Graf (23): KVM: PPC: e500mc: Add doorbell emulation support KVM: PPC: e500mc: implicitly set MSR_GS KVM: PPC: e500mc: Move r1/r2 restoration very early KVM: PPC: e500mc: add load inst fixup KVM: PPC: rename CONFIG_KVM_E500 - CONFIG_KVM_E500V2 KVM: PPC: make e500v2 kvm and e500mc cpu mutually exclusive KVM: PPC: booke: remove leftover debugging KVM: PPC: booke: deliver program int on emulation failure KVM: PPC: booke: rework rescheduling checks KVM: PPC: booke: BOOKE_IRQPRIO_MAX is n+1 KVM: PPC: bookehv: fix exit timing KVM: PPC: bookehv: remove negation for CONFIG_64BIT KVM: PPC: bookehv: remove SET_VCPU KVM: PPC: bookehv: disable MAS register updates early KVM: PPC: bookehv: add comment about shadow_msr KVM: PPC: booke: Readd debug abort code for machine check KVM: PPC: booke: add GS documentation for program interrupt KVM: PPC: bookehv: remove unused code KVM: PPC: e500: fix typo in tlb code KVM: PPC: booke: Support perfmon interrupts KVM: PPC: booke: expose good state on irq reinject KVM: PPC: booke: Reinject performance monitor interrupts KVM: PPC: Booke: only prepare to enter when we enter Scott Wood (15): powerpc/booke: Set CPU_FTR_DEBUG_LVL_EXC on 32-bit powerpc/e500: split CPU_FTRS_ALWAYS/CPU_FTRS_POSSIBLE KVM: PPC: factor out lpid allocator from book3s_64_mmu_hv KVM: PPC: booke: add booke-level vcpu load/put KVM: PPC: booke: Move vm core init/destroy out of booke.c KVM: PPC: e500: rename e500_tlb.h to e500.h KVM: PPC: e500: merge asm/kvm_e500.h into arch/powerpc/kvm/e500.h KVM: PPC: e500: clean up arch/powerpc/kvm/e500.h KVM: PPC: e500: refactor core-specific TLB code KVM: PPC: e500: Track TLB1 entries with a bitmap KVM: PPC: e500: emulate tlbilx powerpc/booke: Provide exception macros with interrupt name KVM: PPC: booke: category E.HV (GS-mode) support KVM: PPC: booke: standard PPC floating point support KVM: PPC: e500mc support arch/powerpc/include/asm/cputable.h | 21 +- arch/powerpc/include/asm/dbell.h|3 + arch/powerpc/include/asm/hw_irq.h |1 + arch/powerpc/include/asm/kvm.h |1 + arch/powerpc/include/asm/kvm_asm.h |8 + arch/powerpc/include/asm/kvm_book3s.h |3 + arch/powerpc/include/asm/kvm_booke.h|3 + arch/powerpc/include/asm/kvm_booke_hv_asm.h | 49 +++ arch/powerpc/include/asm/kvm_e500.h | 96 - arch/powerpc/include/asm/kvm_host.h | 22 +- arch/powerpc/include/asm/kvm_ppc.h | 10 +- arch/powerpc/include/asm/mmu-book3e.h |6 + arch/powerpc/include/asm/processor.h|3 + arch/powerpc/include/asm/reg.h |2 + arch/powerpc/include/asm/reg_booke.h| 34 ++ arch/powerpc/include/asm/system.h |1 + arch/powerpc/kernel/asm-offsets.c | 15 +- arch/powerpc/kernel/cpu_setup_fsl_booke.S |1 + arch/powerpc/kernel/head_44x.S | 23 +- arch/powerpc/kernel/head_booke.h| 69 ++- arch/powerpc/kernel/head_fsl_booke.S| 98 - arch/powerpc/kvm/44x.c | 12 + arch/powerpc/kvm/Kconfig| 28 +- arch/powerpc/kvm/Makefile | 15 +- arch/powerpc/kvm/book3s.c |4 +- arch/powerpc/kvm/book3s_64_mmu_hv.c | 26 +- arch/powerpc/kvm/booke.c| 469 + arch/powerpc/kvm/booke.h| 57 +++- arch/powerpc/kvm/booke_emulate.c| 23 +- arch/powerpc/kvm/bookehv_interrupts.S | 602 +++ arch/powerpc/kvm/e500.c | 372 ++--- arch/powerpc/kvm/e500.h | 302 ++ arch/powerpc/kvm/e500_emulate.c | 110 +- arch/powerpc/kvm/e500_tlb.c | 588 +++--- arch/powerpc/kvm/e500_tlb.h | 174
[PATCH 04/38] KVM: PPC: booke: add booke-level vcpu load/put
From: Scott Wood scottw...@freescale.com
This gives us a place to put load/put actions that correspond to
code that is booke-specific but not specific to a particular core.
Signed-off-by: Scott Wood scottw...@freescale.com
Signed-off-by: Alexander Graf ag...@suse.de
---
arch/powerpc/kvm/44x.c |3 +++
arch/powerpc/kvm/booke.c |8
arch/powerpc/kvm/booke.h |3 +++
arch/powerpc/kvm/e500.c |3 +++
4 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kvm/44x.c b/arch/powerpc/kvm/44x.c
index 7b612a7..879a1a7 100644
--- a/arch/powerpc/kvm/44x.c
+++ b/arch/powerpc/kvm/44x.c
@@ -29,15 +29,18 @@
#include asm/kvm_ppc.h
#include 44x_tlb.h
+#include booke.h
void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
+ kvmppc_booke_vcpu_load(vcpu, cpu);
kvmppc_44x_tlb_load(vcpu);
}
void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
{
kvmppc_44x_tlb_put(vcpu);
+ kvmppc_booke_vcpu_put(vcpu);
}
int kvmppc_core_check_processor_compat(void)
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index ee9e1ee..a2456c7 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -968,6 +968,14 @@ void kvmppc_decrementer_func(unsigned long data)
kvmppc_set_tsr_bits(vcpu, TSR_DIS);
}
+void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
+{
+}
+
+void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu)
+{
+}
+
int __init kvmppc_booke_init(void)
{
unsigned long ivor[16];
diff --git a/arch/powerpc/kvm/booke.h b/arch/powerpc/kvm/booke.h
index 2fe2027..05d1d99 100644
--- a/arch/powerpc/kvm/booke.h
+++ b/arch/powerpc/kvm/booke.h
@@ -71,4 +71,7 @@ void kvmppc_save_guest_spe(struct kvm_vcpu *vcpu);
/* high-level function, manages flags, host state */
void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu);
+void kvmppc_booke_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
+void kvmppc_booke_vcpu_put(struct kvm_vcpu *vcpu);
+
#endif /* __KVM_BOOKE_H__ */
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index ddcd896..2d5fe04 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -36,6 +36,7 @@ void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
+ kvmppc_booke_vcpu_load(vcpu, cpu);
kvmppc_e500_tlb_load(vcpu, cpu);
}
@@ -47,6 +48,8 @@ void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
if (vcpu-arch.shadow_msr MSR_SPE)
kvmppc_vcpu_disable_spe(vcpu);
#endif
+
+ kvmppc_booke_vcpu_put(vcpu);
}
int kvmppc_core_check_processor_compat(void)
--
1.6.0.2
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[PATCH] KVM: PPC: Don't sync timebase when inside KVM
When we know that we're running inside of a KVM guest, we don't have to worry about synchronizing timebases between different CPUs, since the host already took care of that. This fixes CPU overcommit scenarios where vCPUs could hang forever trying to sync each other while not being scheduled. Reported-by: Stuart Yoder b08...@freescale.com Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kernel/smp.c |6 -- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 46695fe..670b453 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -49,6 +49,8 @@ #ifdef CONFIG_PPC64 #include asm/paca.h #endif +#include linux/kvm_para.h +#include asm/kvm_para.h #ifdef DEBUG #include asm/udbg.h @@ -541,7 +543,7 @@ int __cpuinit __cpu_up(unsigned int cpu) DBG(Processor %u found.\n, cpu); - if (smp_ops-give_timebase) + if (!kvm_para_available() smp_ops-give_timebase) smp_ops-give_timebase(); /* Wait until cpu puts itself in the online map */ @@ -626,7 +628,7 @@ void __devinit start_secondary(void *unused) if (smp_ops-setup_cpu) smp_ops-setup_cpu(cpu); - if (smp_ops-take_timebase) + if (!kvm_para_available() smp_ops-take_timebase) smp_ops-take_timebase(); secondary_cpu_time_init(); -- 1.6.0.2 -- To unsubscribe from this list: send the line unsubscribe kvm-ppc in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
