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Date: Thu, 22 Sep 2022 22:21:59 +0000
From: "Michael Kelley (LINUX)" <mikelley@...rosoft.com>
To: Sean Christopherson <seanjc@...gle.com>,
KY Srinivasan <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Stephen Hemminger <sthemmin@...rosoft.com>,
Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
Paolo Bonzini <pbonzini@...hat.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>
CC: "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 4/4] x86/hyperv: KVM: Rename "hv_enlightenments" to
"hv_vmcb_enlightenments"
From: Sean Christopherson <seanjc@...gle.com> Sent: Wednesday, September 21, 2022 1:16 PM
>
> Now that KVM isn't littered with "struct hv_enlightenments" casts, rename
> the struct to "hv_vmcb_enlightenments" to highlight the fact that the
> struct is specifically for SVM's VMCB.
>
> No functional change intended.
>
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
> ---
> arch/x86/include/asm/hyperv-tlfs.h | 2 +-
> arch/x86/include/asm/svm.h | 2 +-
> arch/x86/kvm/svm/nested.c | 2 +-
> arch/x86/kvm/svm/svm.h | 2 +-
> arch/x86/kvm/svm/svm_onhyperv.c | 2 +-
> arch/x86/kvm/svm/svm_onhyperv.h | 6 +++---
> tools/testing/selftests/kvm/include/x86_64/svm.h | 4 ++--
> tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c | 2 +-
> 8 files changed, 11 insertions(+), 11 deletions(-)
>
> diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
> index 4c4f81daf5a2..f7a431bcb2c3 100644
> --- a/arch/x86/include/asm/hyperv-tlfs.h
> +++ b/arch/x86/include/asm/hyperv-tlfs.h
> @@ -588,7 +588,7 @@ struct hv_enlightened_vmcs {
> * Hyper-V uses the software reserved 32 bytes in VMCB control area to expose
> * SVM enlightenments to guests.
> */
> -struct hv_enlightenments {
> +struct hv_vmcb_enlightenments {
> struct __packed hv_enlightenments_control {
> u32 nested_flush_hypercall:1;
> u32 msr_bitmap:1;
> diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
> index 6befed2b30a6..621f064bb7cc 100644
> --- a/arch/x86/include/asm/svm.h
> +++ b/arch/x86/include/asm/svm.h
> @@ -164,7 +164,7 @@ struct __attribute__ ((__packed__)) vmcb_control_area {
> * for use by hypervisor/software.
> */
> union {
> - struct hv_enlightenments hv_enlightenments;
> + struct hv_vmcb_enlightenments hv_enlightenments;
> u8 reserved_sw[32];
> };
> };
> diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
> index a6a87d9743ce..bc9fb4dbf0ae 100644
> --- a/arch/x86/kvm/svm/nested.c
> +++ b/arch/x86/kvm/svm/nested.c
> @@ -201,7 +201,7 @@ void recalc_intercepts(struct vcpu_svm *svm)
> */
> static bool nested_svm_vmrun_msrpm(struct vcpu_svm *svm)
> {
> - struct hv_enlightenments *hve = &svm->nested.ctl.hv_enlightenments;
> + struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments;
> int i;
>
> /*
> diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
> index 9eb2fc76732f..5e1178bc9a64 100644
> --- a/arch/x86/kvm/svm/svm.h
> +++ b/arch/x86/kvm/svm/svm.h
> @@ -152,7 +152,7 @@ struct vmcb_ctrl_area_cached {
> u64 virt_ext;
> u32 clean;
> union {
> - struct hv_enlightenments hv_enlightenments;
> + struct hv_vmcb_enlightenments hv_enlightenments;
> u8 reserved_sw[32];
> };
> };
> diff --git a/arch/x86/kvm/svm/svm_onhyperv.c b/arch/x86/kvm/svm/svm_onhyperv.c
> index 5d4036611a37..0b657c7cd21b 100644
> --- a/arch/x86/kvm/svm/svm_onhyperv.c
> +++ b/arch/x86/kvm/svm/svm_onhyperv.c
> @@ -16,7 +16,7 @@
>
> int svm_hv_enable_direct_tlbflush(struct kvm_vcpu *vcpu)
> {
> - struct hv_enlightenments *hve;
> + struct hv_vmcb_enlightenments *hve;
> struct hv_partition_assist_pg **p_hv_pa_pg =
> &to_kvm_hv(vcpu->kvm)->hv_pa_pg;
>
> diff --git a/arch/x86/kvm/svm/svm_onhyperv.h
> b/arch/x86/kvm/svm/svm_onhyperv.h
> index c8f8045305be..e08cd7192559 100644
> --- a/arch/x86/kvm/svm/svm_onhyperv.h
> +++ b/arch/x86/kvm/svm/svm_onhyperv.h
> @@ -18,7 +18,7 @@ int svm_hv_enable_direct_tlbflush(struct kvm_vcpu *vcpu);
>
> static inline void svm_hv_init_vmcb(struct vmcb *vmcb)
> {
> - struct hv_enlightenments *hve = &vmcb->control.hv_enlightenments;
> + struct hv_vmcb_enlightenments *hve = &vmcb->control.hv_enlightenments;
>
> BUILD_BUG_ON(sizeof(vmcb->control.hv_enlightenments) !=
> sizeof(vmcb->control.reserved_sw));
> @@ -63,7 +63,7 @@ static inline void svm_hv_vmcb_dirty_nested_enlightenments(
> struct kvm_vcpu *vcpu)
> {
> struct vmcb *vmcb = to_svm(vcpu)->vmcb;
> - struct hv_enlightenments *hve = &vmcb->control.hv_enlightenments;
> + struct hv_vmcb_enlightenments *hve = &vmcb->control.hv_enlightenments;
>
> if (hve->hv_enlightenments_control.msr_bitmap)
> vmcb_mark_dirty(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS);
> @@ -71,7 +71,7 @@ static inline void svm_hv_vmcb_dirty_nested_enlightenments(
>
> static inline void svm_hv_update_vp_id(struct vmcb *vmcb, struct kvm_vcpu *vcpu)
> {
> - struct hv_enlightenments *hve = &vmcb->control.hv_enlightenments;
> + struct hv_vmcb_enlightenments *hve = &vmcb->control.hv_enlightenments;
> u32 vp_index = kvm_hv_get_vpindex(vcpu);
>
> if (hve->hv_vp_id != vp_index) {
> diff --git a/tools/testing/selftests/kvm/include/x86_64/svm.h
> b/tools/testing/selftests/kvm/include/x86_64/svm.h
> index 0c32549c6b64..49292190c219 100644
> --- a/tools/testing/selftests/kvm/include/x86_64/svm.h
> +++ b/tools/testing/selftests/kvm/include/x86_64/svm.h
> @@ -58,7 +58,7 @@ enum {
> INTERCEPT_RDPRU,
> };
>
> -struct hv_enlightenments {
> +struct hv_vmcb_enlightenments {
> struct __packed hv_enlightenments_control {
> u32 nested_flush_hypercall:1;
> u32 msr_bitmap:1;
> @@ -124,7 +124,7 @@ struct __attribute__ ((__packed__)) vmcb_control_area {
> * for use by hypervisor/software.
> */
> union {
> - struct hv_enlightenments hv_enlightenments;
> + struct hv_vmcb_enlightenments hv_enlightenments;
> u8 reserved_sw[32];
> };
> };
> diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
> b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
> index 81b204ee509a..f8e43c798c86 100644
> --- a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
> +++ b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
> @@ -46,7 +46,7 @@ static void __attribute__((__flatten__)) guest_code(struct
> svm_test_data *svm)
> {
> unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE];
> struct vmcb *vmcb = svm->vmcb;
> - struct hv_enlightenments *hve = &vmcb->control.hv_enlightenments;
> + struct hv_vmcb_enlightenments *hve = &vmcb->control.hv_enlightenments;
>
> GUEST_SYNC(1);
>
> --
> 2.37.3.968.ga6b4b080e4-goog
Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
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