On 06/13/2011 07:35 AM, Avi Kivity wrote:
> Intercept RDPMC and forward it to the PMU emulation code.
>
> Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
> ---
> arch/x86/kvm/vmx.c | 15 ++++++++++++++-
> 1 files changed, 14 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index f5b49c7..6ac3d54 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -1882,6 +1882,7 @@ static __init void nested_vmx_setup_ctls_msrs(void)
> #endif
> CPU_BASED_MOV_DR_EXITING | CPU_BASED_UNCOND_IO_EXITING |
> CPU_BASED_USE_IO_BITMAPS | CPU_BASED_MONITOR_EXITING |
> + CPU_BASED_RDPMC_EXITING |
> CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
> /*
> * We can allow some features even when not supported by the
What tree is this based on? This patch fails here when to applying to
latest kernel tree.
David
> @@ -2340,7 +2341,8 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf)
> CPU_BASED_USE_TSC_OFFSETING |
> CPU_BASED_MWAIT_EXITING |
> CPU_BASED_MONITOR_EXITING |
> - CPU_BASED_INVLPG_EXITING;
> + CPU_BASED_INVLPG_EXITING |
> + CPU_BASED_RDPMC_EXITING;
>
> if (yield_on_hlt)
> min |= CPU_BASED_HLT_EXITING;
> @@ -4491,6 +4493,16 @@ static int handle_invlpg(struct kvm_vcpu *vcpu)
> return 1;
> }
>
> +static int handle_rdpmc(struct kvm_vcpu *vcpu)
> +{
> + int err;
> +
> + err = kvm_rdpmc(vcpu);
> + kvm_complete_insn_gp(vcpu, err);
> +
> + return 1;
> +}
> +
> static int handle_wbinvd(struct kvm_vcpu *vcpu)
> {
> skip_emulated_instruction(vcpu);
> @@ -5415,6 +5427,7 @@ static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = {
> [EXIT_REASON_HLT] = handle_halt,
> [EXIT_REASON_INVD] = handle_invd,
> [EXIT_REASON_INVLPG] = handle_invlpg,
> + [EXIT_REASON_RDPMC] = handle_rdpmc,
> [EXIT_REASON_VMCALL] = handle_vmcall,
> [EXIT_REASON_VMCLEAR] = handle_vmclear,
> [EXIT_REASON_VMLAUNCH] = handle_vmlaunch,
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