> From: Igor Druzhinin <igor.druzhi...@citrix.com>
> Sent: Wednesday, April 14, 2021 1:25 AM
>
> Version 5 is backwards compatible with version 3. This allows to enable
> vPMU on Ice Lake CPUs.
>
> Signed-off-by: Igor Druzhinin <igor.druzhi...@citrix.com>
Reviewed-by: Kevin Tian <kevin.t...@intel.com>
> ---
> xen/arch/x86/cpu/vpmu_intel.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/xen/arch/x86/cpu/vpmu_intel.c
> b/xen/arch/x86/cpu/vpmu_intel.c
> index 6e97ce7..0dfc256 100644
> --- a/xen/arch/x86/cpu/vpmu_intel.c
> +++ b/xen/arch/x86/cpu/vpmu_intel.c
> @@ -839,7 +839,7 @@ int vmx_vpmu_initialise(struct vcpu *v)
> return 0;
>
> if ( v->domain->arch.cpuid->basic.pmu_version <= 1 ||
> - v->domain->arch.cpuid->basic.pmu_version >= 5 )
> + v->domain->arch.cpuid->basic.pmu_version >= 6 )
> return -EINVAL;
>
> if ( (arch_pmc_cnt + fixed_pmc_cnt) == 0 )
> @@ -909,8 +909,9 @@ int __init core2_vpmu_init(void)
> switch ( version )
> {
> case 4:
> - printk(XENLOG_INFO "VPMU: PMU version 4 is not fully supported. "
> - "Emulating version 3\n");
> + case 5:
> + printk(XENLOG_INFO "VPMU: PMU version %u is not fully supported. "
> + "Emulating version 3\n", version);
> /* FALLTHROUGH */
>
> case 2:
> --
> 2.7.4
