Re: KVM: How does is PAT emulation supposed to work?

2015-04-17 19:12+0200, Jan Kiszka: > On 2015-04-17 18:43, Radim Krčmář wrote: > > 2015-04-13 07:16+0200, Jan Kiszka: > >> PS: If someone has a good idea for a simple test case on machines > >> without IOMMU (like my current boxes), thus without a chance to use > >> device pass-through to stress gue

Re: KVM: How does is PAT emulation supposed to work?

On 2015-04-17 18:43, Radim Krčmář wrote: > 2015-04-13 07:16+0200, Jan Kiszka: >> PS: If someone has a good idea for a simple test case on machines >> without IOMMU (like my current boxes), thus without a chance to use >> device pass-through to stress guest PAT settings, I would be all ears. > > No

Re: KVM: How does is PAT emulation supposed to work?

2015-04-13 07:16+0200, Jan Kiszka: > Hi all, > > while digging into the PAT topic for Jailhouse, I also wondered how KVM > deals with it. And I'm still not getting it complete - or there is a bug: > > KVM intercepts all guest writes to the PAT MSR and instead keeps the > guest value in vcpu->arch

KVM: How does is PAT emulation supposed to work?

Hi all, while digging into the PAT topic for Jailhouse, I also wondered how KVM deals with it. And I'm still not getting it complete - or there is a bug: KVM intercepts all guest writes to the PAT MSR and instead keeps the guest value in vcpu->arch.pat. But, besides returning that value back on r