On Sun, 19 May 2013 11:49:43 +0300
Gleb Natapov g...@redhat.com wrote:
Hi Christian,
On Fri, May 17, 2013 at 02:41:30PM +0200, Christian Borntraeger wrote:
Gleb, Paolo, Marcelo,
here are some low level changes to kvm on s390 that we have been
cooking for a while now.
Patch
On 05/19/2013 12:52 PM, Jun Nakajima wrote:
From: Nadav Har'El n...@il.ibm.com
This is the first patch in a series which adds nested EPT support to KVM's
nested VMX. Nested EPT means emulating EPT for an L1 guest so that L1 can use
EPT when running a nested guest L2. When L1 uses EPT, it
On Sun, May 19, 2013 at 10:36:32AM -0400, Sanjay Lal wrote:
On May 19, 2013, at 8:52 AM, Gleb Natapov wrote:
On Sat, May 18, 2013 at 06:54:24AM -0700, Sanjay Lal wrote:
- As suggested by Gleb, wrap calls to gfn_to_pfn() with
srcu_read_lock/unlock().
Memory slots should be acccessed
On 05/19/2013 12:52 PM, Jun Nakajima wrote:
From: Nadav Har'El n...@il.ibm.com
Since link_shadow_page() is used by a routine in mmu.c, add an
EPT-specific link_shadow_page() in paging_tmp.h, rather than moving
it.
Signed-off-by: Nadav Har'El n...@il.ibm.com
Signed-off-by: Jun Nakajima
On 05/21/2013 03:52 PM, Xiao Guangrong wrote:
On 05/19/2013 12:52 PM, Jun Nakajima wrote:
From: Nadav Har'El n...@il.ibm.com
This is the first patch in a series which adds nested EPT support to KVM's
nested VMX. Nested EPT means emulating EPT for an L1 guest so that L1 can use
EPT when
On Tue, May 21, 2013 at 01:11:28PM +0800, Jason Wang wrote:
On 05/21/2013 09:26 AM, Narasimhan, Sriram wrote:
-Original Message-
From: Michael S. Tsirkin [mailto:m...@redhat.com]
Sent: Monday, May 20, 2013 2:59 AM
To: Narasimhan, Sriram
Cc: ru...@rustcorp.com.au;
On Mon, May 20, 2013 at 05:40:47PM -0300, Marcelo Tosatti wrote:
On Mon, May 20, 2013 at 11:15:45PM +0300, Gleb Natapov wrote:
On Mon, May 20, 2013 at 04:46:24PM -0300, Marcelo Tosatti wrote:
On Fri, May 17, 2013 at 05:12:58AM +0800, Xiao Guangrong wrote:
The current kvm_mmu_zap_all is
On Tue, May 21, 2013 at 11:36:57AM +0800, Xiao Guangrong wrote:
So its better to just
if (need_resched()) {
kvm_mmu_complete_zap_page(list);
is kvm_mmu_commit_zap_page()?
Also we need to check that someone waits on mmu_lock before entering
here.
On 05/19/2013 12:52 PM, Jun Nakajima wrote:
From: Nadav Har'El n...@il.ibm.com
KVM's existing shadow MMU code already supports nested TDP. To use it, we
need to set up a new MMU context for nested EPT, and create a few callbacks
for it (nested_ept_*()). This context should also use the EPT
On Fri, May 17, 2013 at 02:41:30PM +0200, Christian Borntraeger wrote:
Gleb, Paolo, Marcelo,
Applied, thanks.
here are some low level changes to kvm on s390 that we have been
cooking for a while now.
Patch s390/pgtable: fix ipte notify bit will go via Martins
tree into 3.10, but is
On Tue, May 21, 2013 at 04:30:13PM +0800, Xiao Guangrong wrote:
@@ -772,6 +810,7 @@ static gpa_t FNAME(gva_to_gpa_nested)(struct kvm_vcpu
*vcpu, gva_t vaddr,
return gpa;
}
+#endif
Strange!
Why does nested ept not need these functions? How to emulate the
instruction
On 05/19/2013 12:52 PM, Jun Nakajima wrote:
From: Nadav Har'El n...@il.ibm.com
If we let L1 use EPT, we should probably also support the INVEPT instruction.
In our current nested EPT implementation, when L1 changes its EPT table for
L2 (i.e., EPT12), L0 modifies the shadow EPT table
Hey Stephen,
On Mon, May 20, 2013 at 02:24:31PM -0700, Stephen Hemminger wrote:
ioperm() inheritance across threads is different in KVM then when run
on physical hardware. The following program runs on physical hardware
but get SEGV under KVM.
It appears that the I/O permission bits are
On Tue, May 21, 2013 at 11:50:30AM +0200, Joerg Roedel wrote:
Hey Stephen,
On Mon, May 20, 2013 at 02:24:31PM -0700, Stephen Hemminger wrote:
ioperm() inheritance across threads is different in KVM then when run
on physical hardware. The following program runs on physical hardware
but
On 05/19/2013 12:52 PM, Jun Nakajima wrote:
Add code to detect EPT misconfiguration and inject it to L1 VMM. Also,
it injects more correct exit qualification upon EPT violation to L1
VMM. Now L1 can correctly go to ept_misconfig handler (instead of
wrongly going to fast_page_fault), it will
On 05/21/2013 05:01 PM, Gleb Natapov wrote:
On Tue, May 21, 2013 at 04:30:13PM +0800, Xiao Guangrong wrote:
@@ -772,6 +810,7 @@ static gpa_t FNAME(gva_to_gpa_nested)(struct kvm_vcpu
*vcpu, gva_t vaddr,
return gpa;
}
+#endif
Strange!
Why does nested ept not need these functions? How
Michael S. Tsirkin m...@redhat.com writes:
On Mon, May 20, 2013 at 12:57:47PM +0200, Juan Quintela wrote:
Hi
Please, send any topic that you are interested in covering.
Thanks, Juan.
Generating acpi tables.
Cc'd a bunch of people who might be interested in this topic.
Unfortunately
Patch e03b449cbddf (kvm tools: add status notification hook for
virtio) converted virtio-net to use a new notification mechanism,
but unfortunately left virtio-mmio behind.
The direct consequence is that both arm and arm64 guests are left
without any form of networking. Not good.
Bring
On Tue, May 21, 2013 at 07:18:58AM -0500, Anthony Liguori wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Mon, May 20, 2013 at 12:57:47PM +0200, Juan Quintela wrote:
Hi
Please, send any topic that you are interested in covering.
Thanks, Juan.
Generating acpi tables.
On Sun, May 19, 2013 at 07:40:09PM +0300, Michael S. Tsirkin wrote:
OK I get it. So let me correct myself. The simple code
that does something like this under a spinlock:
preempt_disable
pagefault_disable
error = copy_to_user
pagefault_enable
On Sun, May 19, 2013 at 12:35:26PM +0300, Michael S. Tsirkin wrote:
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -198,7 +198,6 @@ void might_fault(void);
#else
static inline void might_fault(void)
{
- might_sleep();
This removes potential resched points
On Sun, May 19, 2013 at 12:35:26PM +0300, Michael S. Tsirkin wrote:
On Thu, May 16, 2013 at 08:40:41PM +0200, Peter Zijlstra wrote:
On Thu, May 16, 2013 at 02:16:10PM +0300, Michael S. Tsirkin wrote:
There are several ways to make sure might_fault
calling function does not sleep.
One
On Tue, May 14, 2013 at 03:13:41PM +0100, Marc Zyngier wrote:
Define the necessary structures to perform an MMIO access.
Reviewed-by: Christopher Covington c...@codeaurora.org
Signed-off-by: Marc Zyngier marc.zyng...@arm.com
Reviewed-by: Catalin Marinas catalin.mari...@arm.com
--
To
Juan Quintela quint...@redhat.com wrote:
Hi
Please, send any topic that you are interested in covering.
As our fearless leader is missing, we cancell the call.
(mst agreed on irc)
See you next week.
Later, Juan.
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the body
On May 21, 2013, at 1:00 AM, Gleb Natapov wrote:
On Sun, May 19, 2013 at 10:36:32AM -0400, Sanjay Lal wrote:
On May 19, 2013, at 8:52 AM, Gleb Natapov wrote:
On Sat, May 18, 2013 at 06:54:24AM -0700, Sanjay Lal wrote:
- As suggested by Gleb, wrap calls to gfn_to_pfn() with
Michael S. Tsirkin m...@redhat.com writes:
On Tue, May 21, 2013 at 07:18:58AM -0500, Anthony Liguori wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Mon, May 20, 2013 at 12:57:47PM +0200, Juan Quintela wrote:
Hi
Please, send any topic that you are interested in covering.
On Tue, May 14, 2013 at 03:13:42PM +0100, Marc Zyngier wrote:
Let userspace play with the guest registers.
Reviewed-by: Christopher Covington c...@codeaurora.org
Signed-off-by: Marc Zyngier marc.zyng...@arm.com
--- /dev/null
+++ b/arch/arm64/kvm/guest.c
...
+static int get_core_reg(struct
Anthony Liguori anth...@codemonkey.ws wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Tue, May 21, 2013 at 07:18:58AM -0500, Anthony Liguori wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Mon, May 20, 2013 at 12:57:47PM +0200, Juan Quintela wrote:
Hi
Please, send any
On 21/05/13 15:30, Catalin Marinas wrote:
On Tue, May 14, 2013 at 03:13:42PM +0100, Marc Zyngier wrote:
Let userspace play with the guest registers.
Reviewed-by: Christopher Covington c...@codeaurora.org
Signed-off-by: Marc Zyngier marc.zyng...@arm.com
--- /dev/null
+++
On Tue, May 14, 2013 at 03:13:43PM +0100, Marc Zyngier wrote:
--- /dev/null
+++ b/arch/arm64/kvm/hyp-init.S
...
+ .text
+ .pushsection.hyp.idmap.text, ax
+
+ .align 11
+
+__kvm_hyp_init:
+ .global __kvm_hyp_init
+
+ENTRY(__kvm_hyp_init_vector)
Why do you need both
On 21/05/13 15:40, Catalin Marinas wrote:
On Tue, May 14, 2013 at 03:13:43PM +0100, Marc Zyngier wrote:
--- /dev/null
+++ b/arch/arm64/kvm/hyp-init.S
...
+.text
+.pushsection.hyp.idmap.text, ax
+
+.align 11
+
+__kvm_hyp_init:
+.global __kvm_hyp_init
+
On Tue, May 14, 2013 at 03:13:44PM +0100, Marc Zyngier wrote:
+// void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
+ENTRY(__kvm_tlb_flush_vmid_ipa)
+ kern_hyp_va x0
+ ldr x2, [x0, #KVM_VTTBR]
+ msr vttbr_el2, x2
+ isb
+
+ /*
+
On Tue, May 14, 2013 at 03:13:45PM +0100, Marc Zyngier wrote:
Handle the exit of a VM, decoding the exit reason from HYP mode
and calling the corresponding handler.
Reviewed-by: Christopher Covington c...@codeaurora.org
Signed-off-by: Marc Zyngier marc.zyng...@arm.com
Reviewed-by: Catalin
On Tue, May 14, 2013 at 03:13:46PM +0100, Marc Zyngier wrote:
Add support for the in-kernel GIC emulation.
Reviewed-by: Christopher Covington c...@codeaurora.org
Signed-off-by: Marc Zyngier marc.zyng...@arm.com
Reviewed-by: Catalin Marinas catalin.mari...@arm.com
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On Tue, 21 May 2013 13:01:18 +0300
Gleb Natapov g...@redhat.com wrote:
On Tue, May 21, 2013 at 11:50:30AM +0200, Joerg Roedel wrote:
Hey Stephen,
On Mon, May 20, 2013 at 02:24:31PM -0700, Stephen Hemminger wrote:
ioperm() inheritance across threads is different in KVM then when run
On Tue, May 14, 2013 at 03:13:47PM +0100, Marc Zyngier wrote:
Add support for the in-kernel timer emulation.
Reviewed-by: Christopher Covington c...@codeaurora.org
Signed-off-by: Marc Zyngier marc.zyng...@arm.com
I think same comment as one of the previous patches, you could get rid
of some
On Mon, May 20, 2013 at 02:01:26PM -0700, David Daney wrote:
From: David Daney david.da...@cavium.com
Because not all 256 CP0 registers are ever implemented, we need a
different method of manipulating them. Use the
KVM_GET_MSRS/KVM_SET_MSRS mechanism as x86 does for its MSRs.
Have you
On Tue, May 14, 2013 at 03:13:48PM +0100, Marc Zyngier wrote:
Wire the PSCI backend into the exit handling code.
Reviewed-by: Christopher Covington c...@codeaurora.org
Signed-off-by: Marc Zyngier marc.zyng...@arm.com
Reviewed-by: Catalin Marinas catalin.mari...@arm.com
--
To unsubscribe from
On Tue, May 14, 2013 at 03:13:49PM +0100, Marc Zyngier wrote:
--- /dev/null
+++ b/arch/arm64/kvm/Kconfig
...
+config KVM_ARM_VGIC
+bool
+ depends on KVM_ARM_HOST OF
+ select HAVE_KVM_IRQCHIP
+ ---help---
+ Adds support for a hardware assisted, in-kernel GIC
On Tue, May 14, 2013 at 03:13:59PM +0100, Marc Zyngier wrote:
Elect myself as the KVM/arm64 maintainer.
Signed-off-by: Marc Zyngier marc.zyng...@arm.com
Acked-by: Catalin Marinas catalin.mari...@arm.com
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On Tue, May 14, 2013 at 12:11:33PM +0100, Marc Zyngier wrote:
This patch series fixes a number of of KVM/ARM issues that have either
been spotted during the review of the arm64 code, or while reworking
related code.
Only the first patch fixes a potential (if unlikely) problem, the
others
- Messaggio originale -
Da: Catalin Marinas catalin.mari...@arm.com
A: Marc Zyngier marc.zyng...@arm.com
Cc: linux-arm-ker...@lists.infradead.org, kvm...@lists.cs.columbia.edu,
kvm@vger.kernel.org, Will Deacon
will.dea...@arm.com, pbonz...@redhat.com, g...@redhat.com, Christopher
On 21/05/13 17:09, Paolo Bonzini wrote:
- Messaggio originale -
Da: Catalin Marinas catalin.mari...@arm.com
A: Marc Zyngier marc.zyng...@arm.com
Cc: linux-arm-ker...@lists.infradead.org, kvm...@lists.cs.columbia.edu,
kvm@vger.kernel.org, Will Deacon
will.dea...@arm.com,
On 05/21/2013 08:37 AM, Gleb Natapov wrote:
On Mon, May 20, 2013 at 02:01:26PM -0700, David Daney wrote:
From: David Daney david.da...@cavium.com
Because not all 256 CP0 registers are ever implemented, we need a
different method of manipulating them. Use the
KVM_GET_MSRS/KVM_SET_MSRS
On Tue, May 21, 2013 at 09:21:06AM -0700, David Daney wrote:
On 05/21/2013 08:37 AM, Gleb Natapov wrote:
On Mon, May 20, 2013 at 02:01:26PM -0700, David Daney wrote:
From: David Daney david.da...@cavium.com
Because not all 256 CP0 registers are ever implemented, we need a
different method
On 05/21/2013 09:28 AM, Gleb Natapov wrote:
On Tue, May 21, 2013 at 09:21:06AM -0700, David Daney wrote:
On 05/21/2013 08:37 AM, Gleb Natapov wrote:
On Mon, May 20, 2013 at 02:01:26PM -0700, David Daney wrote:
From: David Daney david.da...@cavium.com
Because not all 256 CP0 registers are
Am 21.05.2013 16:34, schrieb Juan Quintela:
Anthony Liguori anth...@codemonkey.ws wrote:
Maybe we could use a wiki page to setup a rolling agenda?
I think this could be easier for everybody involved.
Especially because you just look if there is anything to discuss?
On the other hand, the
On 21/05/13 16:16, Catalin Marinas wrote:
On Tue, May 14, 2013 at 03:13:44PM +0100, Marc Zyngier wrote:
+// void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa);
+ENTRY(__kvm_tlb_flush_vmid_ipa)
+ kern_hyp_va x0
+ ldr x2, [x0, #KVM_VTTBR]
+ msr
On Tue, May 21, 2013 at 06:40:18PM +0200, Andreas Färber wrote:
Am 21.05.2013 16:34, schrieb Juan Quintela:
Anthony Liguori anth...@codemonkey.ws wrote:
Maybe we could use a wiki page to setup a rolling agenda?
I think this could be easier for everybody involved.
Especially because
On Tue, May 21, 2013 at 09:29:07AM -0500, Anthony Liguori wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Tue, May 21, 2013 at 07:18:58AM -0500, Anthony Liguori wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Mon, May 20, 2013 at 12:57:47PM +0200, Juan Quintela wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Tue, May 21, 2013 at 09:29:07AM -0500, Anthony Liguori wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Tue, May 21, 2013 at 07:18:58AM -0500, Anthony Liguori wrote:
Michael S. Tsirkin m...@redhat.com writes:
On Mon, May 20, 2013 at
From: David Daney david.da...@cavium.com
The initial patch set implementing MIPS KVM does not handle 64-bit
guests or use of the FPU. This patch set corrects these ABI issues,
and does some very minor clean up.
Chandes from v3: Use KVM_SET_ONE_REG instead of KVM_SET_MSRS. Added
From: David Daney david.da...@cavium.com
All registers are 64-bits wide, 32-bit guests use the least
significant portion of the register storage fields.
Signed-off-by: David Daney david.da...@cavium.com
---
arch/mips/include/asm/kvm.h | 16 +++-
1 file changed, 11 insertions(+), 5
From: David Daney david.da...@cavium.com
Define a non-empty struct kvm_fpu.
Signed-off-by: David Daney david.da...@cavium.com
---
arch/mips/include/asm/kvm.h | 29 +
1 file changed, 21 insertions(+), 8 deletions(-)
diff --git a/arch/mips/include/asm/kvm.h
From: David Daney david.da...@cavium.com
The Linux Way is to return -ENOIOCTLCMD to the vfs when an
unimplemented ioctl is requested. Do this in kvm_mips instead of a
random mixture of -ENOTSUPP and -EINVAL.
Signed-off-by: David Daney david.da...@cavium.com
---
arch/mips/kvm/kvm_mips.c | 18
From: David Daney david.da...@cavium.com
Because not all 256 CP0 registers are ever implemented, we need a
different method of manipulating them. Use the
KVM_SET_ONE_REG/KVM_GET_ONE_REG mechanism.
Code related to implementing KVM_SET_ONE_REG/KVM_GET_ONE_REG is
consolidated in to
From: David Daney david.da...@cavium.com
Also we cannot set special zero register, so force it to zero.
Signed-off-by: David Daney david.da...@cavium.com
---
arch/mips/kvm/kvm_mips.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/mips/kvm/kvm_mips.c
From: David Daney david.da...@cavium.com
Signed-off-by: David Daney david.da...@cavium.com
---
arch/mips/include/asm/kvm.h | 3 ++-
arch/mips/kvm/kvm_mips.c| 4 ++--
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/mips/include/asm/kvm.h b/arch/mips/include/asm/kvm.h
index
Sure. Thanks for the suggestion.
On Tue, May 21, 2013 at 1:15 AM, Xiao Guangrong
xiaoguangr...@linux.vnet.ibm.com wrote:
On 05/19/2013 12:52 PM, Jun Nakajima wrote:
From: Nadav Har'El n...@il.ibm.com
Since link_shadow_page() is used by a routine in mmu.c, add an
EPT-specific
On Tue, May 21, 2013 at 4:05 AM, Xiao Guangrong
xiaoguangr...@linux.vnet.ibm.com wrote:
On 05/21/2013 05:01 PM, Gleb Natapov wrote:
On Tue, May 21, 2013 at 04:30:13PM +0800, Xiao Guangrong wrote:
@@ -772,6 +810,7 @@ static gpa_t FNAME(gva_to_gpa_nested)(struct kvm_vcpu
*vcpu, gva_t vaddr,
On Tue, May 21, 2013 at 1:50 AM, Xiao Guangrong
xiaoguangr...@linux.vnet.ibm.com wrote:
On 05/19/2013 12:52 PM, Jun Nakajima wrote:
From: Nadav Har'El n...@il.ibm.com
KVM's existing shadow MMU code already supports nested TDP. To use it, we
need to set up a new MMU context for nested EPT, and
On Sun, May 19, 2013 at 05:06:37PM +1000, Vadim Rozenfeld wrote:
The following patch allows to activate a partition reference
time enlightenment that is based on the host platform's support
for an Invariant Time Stamp Counter (iTSC).
NOTE: This code will survive migration due to lack of VM
On Sun, May 19, 2013 at 05:06:36PM +1000, Vadim Rozenfeld wrote:
Signed-off: Peter Lieven p...@dlh.net
Signed-off: Gleb Natapov g...@redhat.com
Signed-off: Vadim Rozenfeld vroze...@redhat.com
v1 - v2
1. mark TSC page dirty as suggested by
Eric Northup digitale...@google.com and Gleb
On 05/22/2013 06:26 AM, Nakajima, Jun wrote:
On Tue, May 21, 2013 at 4:05 AM, Xiao Guangrong
xiaoguangr...@linux.vnet.ibm.com wrote:
On 05/21/2013 05:01 PM, Gleb Natapov wrote:
On Tue, May 21, 2013 at 04:30:13PM +0800, Xiao Guangrong wrote:
@@ -772,6 +810,7 @@ static gpa_t
On Tue, May 21, 2013 at 11:36:57AM +0800, Xiao Guangrong wrote:
On 05/21/2013 04:40 AM, Marcelo Tosatti wrote:
On Mon, May 20, 2013 at 11:15:45PM +0300, Gleb Natapov wrote:
On Mon, May 20, 2013 at 04:46:24PM -0300, Marcelo Tosatti wrote:
On Fri, May 17, 2013 at 05:12:58AM +0800, Xiao
On Tue, May 21, 2013 at 11:39:03AM +0300, Gleb Natapov wrote:
Any pages with stale information will be zapped by kvm_mmu_zap_all().
When that happens, page faults will take place which will automatically
use the new generation number.
So still not clear why is this necessary.
This
On Tue, May 21, 2013 at 09:46:14PM -0300, Marcelo Tosatti wrote:
On Sun, May 19, 2013 at 05:06:36PM +1000, Vadim Rozenfeld wrote:
Signed-off: Peter Lieven p...@dlh.net
Signed-off: Gleb Natapov g...@redhat.com
Signed-off: Vadim Rozenfeld vroze...@redhat.com
v1 - v2
1. mark TSC page
On Wed, May 22, 2013 at 06:28:47AM +0300, Gleb Natapov wrote
+ case HV_X64_MSR_TIME_REF_COUNT:
r = true;
break;
}
@@ -1827,6 +1829,29 @@ static int set_msr_hyperv_pw(struct kvm_vcpu
*vcpu, u32 msr, u64 data)
if (__copy_to_user((void __user
On Wed, May 22, 2013 at 12:32:57AM -0300, Marcelo Tosatti wrote:
On Wed, May 22, 2013 at 06:28:47AM +0300, Gleb Natapov wrote
+ case HV_X64_MSR_TIME_REF_COUNT:
r = true;
break;
}
@@ -1827,6 +1829,29 @@ static int
I try to hotplug 28 * 8 multiple-function devices to guest with
old host kernel, ioeventfds in host kernel will be exhausted, then
qemu fails to allocate ioeventfds for blk/nic devices.
It's better to add detail error here.
Signed-off-by: Amos Kong ak...@redhat.com
---
kvm-all.c |4
1
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