Re: [Qemu-devel] [PATCH V5] target-i386: Enabling IA32_TSC_ADJUST for QEMU KVM guest VMs

[Auld, Will]

Thanks Marcelo!

> -----Original Message-----
> From: Marcelo Tosatti [mailto:address@hidden
> Sent: Friday, November 30, 2012 12:40 PM
> To: Auld, Will
> Cc: qemu-devel; Gleb; Andreas Farber; address@hidden; Dugger,
> Donald D; Liu, Jinsong; Zhang, Xiantao; address@hidden
> Subject: Re: [PATCH V5] target-i386: Enabling IA32_TSC_ADJUST for QEMU
> KVM guest VMs
> 
> On Mon, Nov 26, 2012 at 09:32:18PM -0800, Will Auld wrote:
> > CPUID.7.0.EBX[1]=1 indicates IA32_TSC_ADJUST MSR 0x3b is supported
> >
> > Basic design is to emulate the MSR by allowing reads and writes to
> the
> > hypervisor vcpu specific locations to store the value of the emulated
> MSRs.
> > In this way the IA32_TSC_ADJUST value will be included in all reads
> to
> > the TSC MSR whether through rdmsr or rdtsc.
> >
> > As this is a new MSR that the guest may access and modify its value
> > needs to be migrated along with the other MRSs. The changes here are
> > specifically for recognizing when IA32_TSC_ADJUST is enabled in CPUID
> > and code added for migrating its value.
> >
> > Signed-off-by: Will Auld <address@hidden>
> > ---
> > Andreas,
> >
> > Thanks, that helped. I used Stefan's auto-run method this time.
> >
> > Will
> >
> >  target-i386/cpu.h     |  2 ++
> >  target-i386/kvm.c     | 14 ++++++++++++++
> >  target-i386/machine.c | 21 +++++++++++++++++++++
> >  3 files changed, 37 insertions(+)
> 
> Applied, thanks.