On Fri, Feb 12, 2016 at 08:59:31PM +0700, Suravee Suthikulpanit wrote:
> From: Suravee Suthikulpanit <[email protected]>
>
> VINTR is not supported when enable AVIC. Therefore, we need to inject
> interrupt via APIC backing page instead. Also, adding AVIC doorbell
> support to signal running vcpu to check IRR for injected interrupts.
>
> This patch also introduces kvm_x86_ops.apicv_intr_pending() to allow SVM
> to provide a function hook to query AVIC interrupt pending status.
>
> Signed-off-by: Suravee Suthikulpanit <[email protected]>
> ---
> arch/x86/include/asm/kvm_host.h | 2 +
> arch/x86/include/asm/msr-index.h | 1 +
> arch/x86/kvm/lapic.c | 3 +-
> arch/x86/kvm/svm.c | 110
> +++++++++++++++++++++++++++++++++++++--
> arch/x86/kvm/x86.c | 4 +-
> 5 files changed, 114 insertions(+), 6 deletions(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index 7b78328..a7c8852 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -973,6 +973,8 @@ struct kvm_x86_ops {
> void (*post_block)(struct kvm_vcpu *vcpu);
> int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq,
> uint32_t guest_irq, bool set);
> +
> + bool (*apicv_intr_pending)(struct kvm_vcpu *vcpu);
> };
>
> struct kvm_arch_async_pf {
> diff --git a/arch/x86/include/asm/msr-index.h
> b/arch/x86/include/asm/msr-index.h
> index b05402e..605b869 100644
> --- a/arch/x86/include/asm/msr-index.h
> +++ b/arch/x86/include/asm/msr-index.h
> @@ -284,6 +284,7 @@
> #define MSR_AMD64_TSC_RATIO 0xc0000104
> #define MSR_AMD64_NB_CFG 0xc001001f
> #define MSR_AMD64_PATCH_LOADER 0xc0010020
> +#define MSR_AMD64_AVIC_DOORBELL 0xc001011b
AFAICT, that MSR is being used only in arch/x86/kvm/lapic.c
Please add it there.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
