+/*
+ * Host interrupt handlers may have clobbered these guest-readable
+ * SPRGs, so we need to reload them here with the guest's values.
+ */
+lwz r3, VCPU_VRSAVE(r4)
+lwz r5, VCPU_SHARED_SPRG4(r11)
+mtspr SPRN_VRSAVE, r3
+lwz r6,
No instruction which can change Condition Register (CR) should be executed
after Guest CR is loaded. So the guest CR is restored after the Exit Timing in
lightweight_exit executes cmpw, which can clobber CR.
Signed-off-by: Bharat Bhushan bharat.bhus...@freescale.com
---
This patch is against
On PPC, CR2-CR4 are nonvolatile, thus have to be saved across function calls.
We didn't respect that for any architecture until Paul spotted it in his
patch for Book3S-HV. This patch saves/restores CR for all KVM capable PPC hosts.
Signed-off-by: Alexander Graf ag...@suse.de
---
On 02/21/2012 05:30 AM, Ben Collins wrote:
The result of kvmppc_core_vcpu_create() was being manipulated before it was
checked for IS_ERR(). Did not see the bug occur, but caught it when looking
through the code.
Nice catch, but this has already been fixed by Matt:
commit
On 02/03/2012 11:53 AM, Paul Mackerras wrote:
The ABI specifies that CR fields CR2--CR4 are nonvolatile across function
calls. Currently __kvmppc_vcore_entry doesn't save and restore the CR,
leading to CR2--CR4 getting corrupted with guest values, possibly leading
to incorrect behaviour in its
On 01/31/2012 07:25 AM, Matt Evans wrote:
SPAPR support includes various in-kernel hypercalls, improving performance
by cutting out the exit to userspace. H_BULK_REMOVE is implemented in this
patch.
Signed-off-by: Matt Evansm...@ozlabs.org
Thanks, applied to kvm-ppc-next.
Alex
--
To
Hi
I'm working on powerpc booke architecture and my project requires me to remove
read and write privileges on some pages. Due to this any instruction accessing
these pages traps and i'm trying to emulate the behavior of these instructions.
I've emulated lwarx and stwcx instruction but i think
On 03/05/2012 02:37 PM, Aashish Mittal wrote:
Hi
I'm working on powerpc booke architecture and my project requires me to remove
read and write privileges on some pages. Due to this any instruction accessing
these pages traps and i'm trying to emulate the behavior of these
instructions.
On 03/05/2012 10:02 AM, Alexander Graf wrote:
@@ -442,6 +444,7 @@ heavyweight_exit:
/* Return to kvm_vcpu_run(). */
mtlrr5
+ mtcrr6
addir1, r1, HOST_STACK_SIZE
/* r3 still contains the return code from kvmppc_handle_exit(). */
blr
@@ -459,6
