Peter Hornyack <peterhornyack@xxxxxxxxxx> writes:
> msr_exits_supported will be checked when user space attempts to enable
> the KVM_CAP_UNHANDLED_MSR_EXITS capability for the vm. This is needed
> because MSR exit support will be implemented for vmx but not svm later
> in this patchset.
Is svm future work ? :) Are there any such svm msrs ?
> Signed-off-by: Peter Hornyack <peterhornyack@xxxxxxxxxx>
> ---
> arch/x86/include/asm/kvm_host.h | 1 +
> arch/x86/kvm/svm.c | 6 ++++++
> arch/x86/kvm/vmx.c | 6 ++++++
> 3 files changed, 13 insertions(+)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index c12e845f59e6..a6e145b1e271 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -854,6 +854,7 @@ struct kvm_x86_ops {
> void (*handle_external_intr)(struct kvm_vcpu *vcpu);
> bool (*mpx_supported)(void);
> bool (*xsaves_supported)(void);
> + bool (*msr_exits_supported)(void);
>
> int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr);
>
> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> index 74d825716f4f..bcbb56f49b9f 100644
> --- a/arch/x86/kvm/svm.c
> +++ b/arch/x86/kvm/svm.c
> @@ -4249,6 +4249,11 @@ static bool svm_xsaves_supported(void)
> return false;
> }
>
> +static bool svm_msr_exits_supported(void)
> +{
> + return false;
> +}
> +
> static bool svm_has_wbinvd_exit(void)
> {
> return true;
> @@ -4540,6 +4545,7 @@ static struct kvm_x86_ops svm_x86_ops = {
> .invpcid_supported = svm_invpcid_supported,
> .mpx_supported = svm_mpx_supported,
> .xsaves_supported = svm_xsaves_supported,
> + .msr_exits_supported = svm_msr_exits_supported,
>
> .set_supported_cpuid = svm_set_supported_cpuid,
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index acc38e27d221..27fec385d79d 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -8161,6 +8161,11 @@ static bool vmx_xsaves_supported(void)
> SECONDARY_EXEC_XSAVES;
> }
>
> +static bool vmx_msr_exits_supported(void)
> +{
> + return false;
> +}
> +
> static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx)
> {
> u32 exit_intr_info;
> @@ -10413,6 +10418,7 @@ static struct kvm_x86_ops vmx_x86_ops = {
> .handle_external_intr = vmx_handle_external_intr,
> .mpx_supported = vmx_mpx_supported,
> .xsaves_supported = vmx_xsaves_supported,
> + .msr_exits_supported = vmx_msr_exits_supported,
>
> .check_nested_events = vmx_check_nested_events,
--
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