On Thu, Jul 21, 2022 at 8:03 AM Andrew Cooper wrote:
>
> On 20/07/2022 19:47, Tamas K Lengyel wrote:
> > diff --git a/xen/arch/x86/cpu/vpmu_amd.c b/xen/arch/x86/cpu/vpmu_amd.c
> > index 9bacc02ec1..4c76e24551 100644
> > --- a/xen/arch/x86/cpu/vpmu_amd.c
> > +++ b/xen/arch/x86/cpu/vpmu_amd.c
> > @@
On Thu, Jul 21, 2022 at 6:19 AM Jan Beulich wrote:
>
> On 20.07.2022 20:47, Tamas K Lengyel wrote:
> > --- a/xen/arch/x86/mm/mem_sharing.c
> > +++ b/xen/arch/x86/mm/mem_sharing.c
> > @@ -1653,6 +1653,46 @@ static void copy_vcpu_nonreg_state(struct vcpu
> > *d_vcpu, struct vcpu *cd_vcpu)
> >
On 20.07.2022 20:47, Tamas K Lengyel wrote:
> --- a/xen/arch/x86/mm/mem_sharing.c
> +++ b/xen/arch/x86/mm/mem_sharing.c
> @@ -1653,6 +1653,46 @@ static void copy_vcpu_nonreg_state(struct vcpu
> *d_vcpu, struct vcpu *cd_vcpu)
> hvm_set_nonreg_state(cd_vcpu, &nrs);
> }
>
> +static int copy_v
Currently the vPMU state from a parent isn't copied to VM forks. To enable the
vPMU state to be copied to a fork VM we export certain vPMU functions. First,
the vPMU context needs to be allocated for the fork if the parent has one. For
this we introduce vpmu->allocate_context, which has previously
