On Thu, Jul 4, 2013 at 8:43 PM, Gleb Natapov wrote:
> On Thu, Jul 04, 2013 at 02:34:11PM +0200, Paolo Bonzini wrote:
>> Il 04/07/2013 13:31, Gleb Natapov ha scritto:
>> > On Thu, Jul 04, 2013 at 01:21:51PM +0200, Paolo Bonzini wrote:
>> >> Il 04/07/2013 13:12, Gleb Natapov ha scritto:
>> I do
On Thu, Jul 04, 2013 at 02:34:11PM +0200, Paolo Bonzini wrote:
> Il 04/07/2013 13:31, Gleb Natapov ha scritto:
> > On Thu, Jul 04, 2013 at 01:21:51PM +0200, Paolo Bonzini wrote:
> >> Il 04/07/2013 13:12, Gleb Natapov ha scritto:
> I don't like that it requires a firmware change in order to use
Il 04/07/2013 13:31, Gleb Natapov ha scritto:
> On Thu, Jul 04, 2013 at 01:21:51PM +0200, Paolo Bonzini wrote:
>> Il 04/07/2013 13:12, Gleb Natapov ha scritto:
I don't like that it requires a firmware change in order to use nested
VMX (at least for hypervisors that read the MSR). "Worse
On Thu, Jul 04, 2013 at 01:21:51PM +0200, Paolo Bonzini wrote:
> Il 04/07/2013 13:12, Gleb Natapov ha scritto:
> > > I don't like that it requires a firmware change in order to use nested
> > > VMX (at least for hypervisors that read the MSR). "Worse emulation" and
> > > "better emulation + new fi
Il 04/07/2013 13:12, Gleb Natapov ha scritto:
> > I don't like that it requires a firmware change in order to use nested
> > VMX (at least for hypervisors that read the MSR). "Worse emulation" and
> > "better emulation + new firmware" are indistiguishable from the point of
> > view of anyone excep
On Thu, Jul 04, 2013 at 01:01:15PM +0200, Paolo Bonzini wrote:
> Il 04/07/2013 09:10, Gleb Natapov ha scritto:
> > On Thu, Jul 04, 2013 at 09:00:09AM +0200, Paolo Bonzini wrote:
> >> Il 03/07/2013 15:41, Arthur Chunqi Li ha scritto:
> >>> Fix read/write to IA32_FEATURE_CONTROL MSR in nested environ
Il 04/07/2013 09:10, Gleb Natapov ha scritto:
> On Thu, Jul 04, 2013 at 09:00:09AM +0200, Paolo Bonzini wrote:
>> Il 03/07/2013 15:41, Arthur Chunqi Li ha scritto:
>>> Fix read/write to IA32_FEATURE_CONTROL MSR in nested environment.
>>> Simply return 0x5 when read and generate #GP(0) when write.
>
On Thu, Jul 04, 2013 at 04:16:25PM +0800, Gmail wrote:
> 在 2013-7-4，15:24，Gleb Natapov 写道：
>
> > On Thu, Jul 04, 2013 at 03:21:15PM +0800, Arthur Chunqi Li wrote:
> >> On Thu, Jul 4, 2013 at 3:10 PM, Gleb Natapov wrote:
> >>> On Thu, Jul 04, 2013 at 09:00:09AM +0200, Paolo Bonzini wrote:
>
在 2013-7-4，15:24，Gleb Natapov 写道：
> On Thu, Jul 04, 2013 at 03:21:15PM +0800, Arthur Chunqi Li wrote:
>> On Thu, Jul 4, 2013 at 3:10 PM, Gleb Natapov wrote:
>>> On Thu, Jul 04, 2013 at 09:00:09AM +0200, Paolo Bonzini wrote:
Il 03/07/2013 15:41, Arthur Chunqi Li ha scritto:
> Fix read/wr
On Thu, Jul 04, 2013 at 03:21:15PM +0800, Arthur Chunqi Li wrote:
> On Thu, Jul 4, 2013 at 3:10 PM, Gleb Natapov wrote:
> > On Thu, Jul 04, 2013 at 09:00:09AM +0200, Paolo Bonzini wrote:
> >> Il 03/07/2013 15:41, Arthur Chunqi Li ha scritto:
> >> > Fix read/write to IA32_FEATURE_CONTROL MSR in nes
On Thu, Jul 4, 2013 at 3:10 PM, Gleb Natapov wrote:
> On Thu, Jul 04, 2013 at 09:00:09AM +0200, Paolo Bonzini wrote:
>> Il 03/07/2013 15:41, Arthur Chunqi Li ha scritto:
>> > Fix read/write to IA32_FEATURE_CONTROL MSR in nested environment.
>> > Simply return 0x5 when read and generate #GP(0) when
On Thu, Jul 04, 2013 at 09:00:09AM +0200, Paolo Bonzini wrote:
> Il 03/07/2013 15:41, Arthur Chunqi Li ha scritto:
> > Fix read/write to IA32_FEATURE_CONTROL MSR in nested environment.
> > Simply return 0x5 when read and generate #GP(0) when write.
> > Delete handling codes in vmx_set_vmx_msr() and
Il 03/07/2013 15:41, Arthur Chunqi Li ha scritto:
> Fix read/write to IA32_FEATURE_CONTROL MSR in nested environment.
> Simply return 0x5 when read and generate #GP(0) when write.
> Delete handling codes in vmx_set_vmx_msr() and generate #GP(0) in
> handle_wrmsr().
>
> Signed-off-by: Arthur Chunqi
On Wed, Jul 03, 2013 at 10:48:33AM -0400, Bandan Das wrote:
> Gleb Natapov writes:
>
> > On Wed, Jul 03, 2013 at 04:24:33PM +0800, Arthur Chunqi Li wrote:
> >> Hi Gleb and Paolo,
> >> When I write test cases for nested virt and found that reading/writing
> >> IA32_FEATURE_CONTROL will be simply
Gleb Natapov writes:
> On Wed, Jul 03, 2013 at 04:24:33PM +0800, Arthur Chunqi Li wrote:
>> Hi Gleb and Paolo,
>> When I write test cases for nested virt and found that reading/writing
>> IA32_FEATURE_CONTROL will be simply ignored or return 0 (in
>> arch/x86/kvm/vmx.c) in VM. Checking this MSR
Fix read/write to IA32_FEATURE_CONTROL MSR in nested environment.
Simply return 0x5 when read and generate #GP(0) when write.
Delete handling codes in vmx_set_vmx_msr() and generate #GP(0) in
handle_wrmsr().
Signed-off-by: Arthur Chunqi Li
---
arch/x86/kvm/vmx.c |5 +
1 file changed, 1 i
OK, I will write a patch as what Paolo says. Anything else need to be taken
into consideration, Paolo?
Arthur Chunqi Li
Department of Computer Science
School of EECS
Peking University
Beijing, China
>From my iPhone
在 2013-7-3，17:14，Gleb Natapov 写道：
> On Wed, Jul 03, 2013 at 04:24:33PM +0800,
On Wed, Jul 03, 2013 at 04:24:33PM +0800, Arthur Chunqi Li wrote:
> Hi Gleb and Paolo,
> When I write test cases for nested virt and found that reading/writing
> IA32_FEATURE_CONTROL will be simply ignored or return 0 (in
> arch/x86/kvm/vmx.c) in VM. Checking this MSR will be done by some
> hyperv
Il 03/07/2013 10:46, Zhang, Yang Z ha scritto:
>
>> Il 03/07/2013 10:24, Arthur Chunqi Li ha scritto:
>>> Hi Gleb and Paolo,
>>> When I write test cases for nested virt and found that reading/writing
>>> IA32_FEATURE_CONTROL will be simply ignored or return 0 (in
>>> arch/x86/kvm/vmx.c) in VM. C
>Il 03/07/2013 10:24, Arthur Chunqi Li ha scritto:
>> Hi Gleb and Paolo,
>> When I write test cases for nested virt and found that reading/writing
>> IA32_FEATURE_CONTROL will be simply ignored or return 0 (in
>> arch/x86/kvm/vmx.c) in VM. Checking this MSR will be done by some
>> hypervisors (
Il 03/07/2013 10:24, Arthur Chunqi Li ha scritto:
> Hi Gleb and Paolo,
> When I write test cases for nested virt and found that reading/writing
> IA32_FEATURE_CONTROL will be simply ignored or return 0 (in
> arch/x86/kvm/vmx.c) in VM. Checking this MSR will be done by some
> hypervisors (e.g. NOVA
Hi Gleb and Paolo,
When I write test cases for nested virt and found that reading/writing
IA32_FEATURE_CONTROL will be simply ignored or return 0 (in
arch/x86/kvm/vmx.c) in VM. Checking this MSR will be done by some
hypervisors (e.g. NOVA) and may cause error then, so it is necessary
to behave rig
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