On 25/08/2015 10:50, Feng Wu wrote:
> Define an interface to get PI descriptor address from the vCPU structure.
>
> Signed-off-by: Feng Wu <feng.wu@xxxxxxxxx>
See the later review, this interface and the one in patch 5 is too
low-level.
Paolo
> ---
> arch/x86/include/asm/kvm_host.h | 2 ++
> arch/x86/kvm/vmx.c | 11 +++++++++++
> 2 files changed, 13 insertions(+)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index af11bca..d50c1d3 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -858,6 +858,8 @@ struct kvm_x86_ops {
> void (*enable_log_dirty_pt_masked)(struct kvm *kvm,
> struct kvm_memory_slot *slot,
> gfn_t offset, unsigned long mask);
> +
> + u64 (*get_pi_desc_addr)(struct kvm_vcpu *vcpu);
> /* pmu operations of sub-arch */
> const struct kvm_pmu_ops *pmu_ops;
> };
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 316f9bf..81a995c 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -610,6 +610,10 @@ static inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
> #define FIELD64(number, name) [number] = VMCS12_OFFSET(name), \
> [number##_HIGH] = VMCS12_OFFSET(name)+4
>
> +struct pi_desc *vcpu_to_pi_desc(struct kvm_vcpu *vcpu)
> +{
> + return &(to_vmx(vcpu)->pi_desc);
> +}
>
> static unsigned long shadow_read_only_fields[] = {
> /*
> @@ -4487,6 +4491,11 @@ static void vmx_sync_pir_to_irr_dummy(struct kvm_vcpu *vcpu)
> return;
> }
>
> +static u64 vmx_get_pi_desc_addr(struct kvm_vcpu *vcpu)
> +{
> + return __pa((u64)vcpu_to_pi_desc(vcpu));
> +}
> +
> /*
> * Set up the vmcs's constant host-state fields, i.e., host-state fields that
> * will not change in the lifetime of the guest.
> @@ -10460,6 +10469,8 @@ static struct kvm_x86_ops vmx_x86_ops = {
> .flush_log_dirty = vmx_flush_log_dirty,
> .enable_log_dirty_pt_masked = vmx_enable_log_dirty_pt_masked,
>
> + .get_pi_desc_addr = vmx_get_pi_desc_addr,
> +
> .pmu_ops = &intel_pmu_ops,
> };
>
>
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