On Wed, Mar 15, 2017 at 03:43:03PM -0400, Gabriel L. Somlo wrote:
> Applies cleanly over git://git.kernel.org/pub/scm/virt/kvm/kvm.git,
> but then I get:
>
> CC [M] arch/x86/kvm/x86.o
> In file included from arch/x86/kvm/x86.c:28:0:
> arch/x86/kvm/x86.h: In function ‘kvm_mwait_in_guest’:
> arch
Applies cleanly over git://git.kernel.org/pub/scm/virt/kvm/kvm.git,
but then I get:
CC [M] arch/x86/kvm/x86.o
In file included from arch/x86/kvm/x86.c:28:0:
arch/x86/kvm/x86.h: In function ‘kvm_mwait_in_guest’:
arch/x86/kvm/x86.h:231:34: error: ‘CPUID_MWAIT_LEAF’ undeclared (first use in
this
On Wed, Mar 15, 2017 at 03:01:12PM -0400, Gabriel L. Somlo wrote:
> On Wed, Mar 15, 2017 at 08:29:23PM +0200, Michael S. Tsirkin wrote:
> > On Wed, Mar 15, 2017 at 02:14:26PM -0400, Gabriel L. Somlo wrote:
> > > Michael,
> > >
> > > I tested this on OS X 10.7 (Lion), the last version that doesn't
On Wed, Mar 15, 2017 at 03:01:12PM -0400, Gabriel L. Somlo wrote:
> On Wed, Mar 15, 2017 at 08:29:23PM +0200, Michael S. Tsirkin wrote:
> > On Wed, Mar 15, 2017 at 02:14:26PM -0400, Gabriel L. Somlo wrote:
> > > Michael,
> > >
> > > I tested this on OS X 10.7 (Lion), the last version that doesn't
On Wed, Mar 15, 2017 at 08:29:23PM +0200, Michael S. Tsirkin wrote:
> On Wed, Mar 15, 2017 at 02:14:26PM -0400, Gabriel L. Somlo wrote:
> > Michael,
> >
> > I tested this on OS X 10.7 (Lion), the last version that doesn't check
> > CPUID for MWAIT support.
> >
> > I used the latest kvm from git:/
On Wed, Mar 15, 2017 at 02:14:26PM -0400, Gabriel L. Somlo wrote:
> Michael,
>
> I tested this on OS X 10.7 (Lion), the last version that doesn't check
> CPUID for MWAIT support.
>
> I used the latest kvm from git://git.kernel.org/pub/scm/virt/kvm/kvm.git
> first as-is, then with your v2 MWAIT pa
Michael,
I tested this on OS X 10.7 (Lion), the last version that doesn't check
CPUID for MWAIT support.
I used the latest kvm from git://git.kernel.org/pub/scm/virt/kvm/kvm.git
first as-is, then with your v2 MWAIT patch applied.
Single-(V)CPU guest works as expected (but then again, single-vcpu
2017-03-13 22:03+0200, Michael S. Tsirkin:
> On Mon, Mar 13, 2017 at 08:39:11PM +0100, Radim Krčmář wrote:
> > 2017-03-13 18:08+0200, Michael S. Tsirkin:
> > > On Mon, Mar 13, 2017 at 04:46:20PM +0100, Radim Krčmář wrote:
>> >> What about keeping just the last hunk to improve OS X, for now?
>> >
>
On Mon, Mar 13, 2017 at 08:39:11PM +0100, Radim Krčmář wrote:
> 2017-03-13 18:08+0200, Michael S. Tsirkin:
> > On Mon, Mar 13, 2017 at 04:46:20PM +0100, Radim Krčmář wrote:
> >> 2017-03-10 00:29+0200, Michael S. Tsirkin:
> >> > Some guests call mwait without checking the cpu flags. We currently
>
2017-03-13 18:08+0200, Michael S. Tsirkin:
> On Mon, Mar 13, 2017 at 04:46:20PM +0100, Radim Krčmář wrote:
>> 2017-03-10 00:29+0200, Michael S. Tsirkin:
>> > Some guests call mwait without checking the cpu flags. We currently
>> > emulate that as a NOP but on VMX we can do better: let guest stop t
On Mon, Mar 13, 2017 at 04:46:20PM +0100, Radim Krčmář wrote:
> 2017-03-10 00:29+0200, Michael S. Tsirkin:
> > Some guests call mwait without checking the cpu flags. We currently
> > emulate that as a NOP but on VMX we can do better: let guest stop the
> > CPU until timer or IPI. CPU will be busy
2017-03-10 00:29+0200, Michael S. Tsirkin:
> Some guests call mwait without checking the cpu flags. We currently
> emulate that as a NOP but on VMX we can do better: let guest stop the
> CPU until timer or IPI. CPU will be busy but that isn't any worse than
> a NOP emulation.
>
> Note that mwait
Cc Peterz,
2017-03-10 9:12 GMT+08:00 Michael S. Tsirkin :
> On Thu, Mar 09, 2017 at 07:51:27PM -0500, Gabriel L. Somlo wrote:
>> On Fri, Mar 10, 2017 at 12:29:31AM +0200, Michael S. Tsirkin wrote:
>> > Some guests call mwait without checking the cpu flags. We currently
>> > emulate that as a NOP b
On Sun, Mar 12, 2017 at 02:01:32AM +0200, Michael S. Tsirkin wrote:
> On Fri, Mar 10, 2017 at 03:46:45PM -0800, Jim Mattson wrote:
> > On Thu, Mar 9, 2017 at 2:29 PM, Michael S. Tsirkin wrote:
> > > Some guests call mwait without checking the cpu flags. We currently
> >
> > "Some guests"? What g
On Fri, Mar 10, 2017 at 03:46:45PM -0800, Jim Mattson wrote:
> On Thu, Mar 9, 2017 at 2:29 PM, Michael S. Tsirkin wrote:
> > Some guests call mwait without checking the cpu flags. We currently
>
> "Some guests"? What guests other than Mac OS X are so ill-behaved?
I heard about Mac OSX only but
On Thu, Mar 9, 2017 at 2:29 PM, Michael S. Tsirkin wrote:
> Some guests call mwait without checking the cpu flags. We currently
"Some guests"? What guests other than Mac OS X are so ill-behaved?
> emulate that as a NOP but on VMX we can do better: let guest stop the
> CPU until timer or IPI. C
On Thu, Mar 09, 2017 at 07:51:27PM -0500, Gabriel L. Somlo wrote:
> On Fri, Mar 10, 2017 at 12:29:31AM +0200, Michael S. Tsirkin wrote:
> > Some guests call mwait without checking the cpu flags. We currently
> > emulate that as a NOP but on VMX we can do better: let guest stop the
> > CPU until ti
On Fri, Mar 10, 2017 at 12:29:31AM +0200, Michael S. Tsirkin wrote:
> Some guests call mwait without checking the cpu flags. We currently
> emulate that as a NOP but on VMX we can do better: let guest stop the
> CPU until timer or IPI. CPU will be busy but that isn't any worse than
> a NOP emulat
Some guests call mwait without checking the cpu flags. We currently
emulate that as a NOP but on VMX we can do better: let guest stop the
CPU until timer or IPI. CPU will be busy but that isn't any worse than
a NOP emulation.
Note that mwait within guests is not the same as on real hardware
beca
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