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Message-Id: <20221004123956.188909-2-vkuznets@redhat.com>
Date: Tue, 4 Oct 2022 14:39:11 +0200
From: Vitaly Kuznetsov <vkuznets@...hat.com>
To: kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
Sean Christopherson <seanjc@...gle.com>
Cc: Wanpeng Li <wanpengli@...cent.com>,
Jim Mattson <jmattson@...gle.com>,
Michael Kelley <mikelley@...rosoft.com>,
Siddharth Chandrasekaran <sidcha@...zon.de>,
Yuan Yao <yuan.yao@...ux.intel.com>,
Maxim Levitsky <mlevitsk@...hat.com>,
linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v11 01/46] x86/hyperv: Move VMCB enlightenment definitions to hyperv-tlfs.h
From: Sean Christopherson <seanjc@...gle.com>
Move Hyper-V's VMCB enlightenment definitions to the TLFS header; the
definitions come directly from the TLFS[*], not from KVM.
No functional change intended.
[*] https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/tlfs/datatypes/hv_svm_enlightened_vmcb_fields
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
[vitaly: rename VMCB_HV_ -> HV_VMCB_ to match the rest of
hyperv-tlfs.h, keep svm/hyperv.h]
Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
---
arch/x86/include/asm/hyperv-tlfs.h | 22 +++++++++++++++++++
arch/x86/kvm/svm/hyperv.h | 22 -------------------
arch/x86/kvm/svm/nested.c | 2 +-
arch/x86/kvm/svm/svm_onhyperv.c | 2 +-
arch/x86/kvm/svm/svm_onhyperv.h | 4 ++--
.../selftests/kvm/x86_64/hyperv_svm_test.c | 6 ++---
6 files changed, 29 insertions(+), 29 deletions(-)
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index 3089ec352743..245a806a9717 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -598,6 +598,28 @@ struct hv_enlightened_vmcs {
#define HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL 0xFFFF
+/*
+ * Hyper-V uses the software reserved 32 bytes in VMCB control area to expose
+ * SVM enlightenments to guests.
+ */
+struct hv_enlightenments {
+ struct __packed hv_enlightenments_control {
+ u32 nested_flush_hypercall:1;
+ u32 msr_bitmap:1;
+ u32 enlightened_npt_tlb: 1;
+ u32 reserved:29;
+ } __packed hv_enlightenments_control;
+ u32 hv_vp_id;
+ u64 hv_vm_id;
+ u64 partition_assist_page;
+ u64 reserved;
+} __packed;
+
+/*
+ * Hyper-V uses the software reserved clean bit in VMCB.
+ */
+#define HV_VMCB_NESTED_ENLIGHTENMENTS 31
+
struct hv_partition_assist_pg {
u32 tlb_lock_count;
};
diff --git a/arch/x86/kvm/svm/hyperv.h b/arch/x86/kvm/svm/hyperv.h
index 7d6d97968fb9..c59544cdf03b 100644
--- a/arch/x86/kvm/svm/hyperv.h
+++ b/arch/x86/kvm/svm/hyperv.h
@@ -10,26 +10,4 @@
#include "../hyperv.h"
-/*
- * Hyper-V uses the software reserved 32 bytes in VMCB
- * control area to expose SVM enlightenments to guests.
- */
-struct hv_enlightenments {
- struct __packed hv_enlightenments_control {
- u32 nested_flush_hypercall:1;
- u32 msr_bitmap:1;
- u32 enlightened_npt_tlb: 1;
- u32 reserved:29;
- } __packed hv_enlightenments_control;
- u32 hv_vp_id;
- u64 hv_vm_id;
- u64 partition_assist_page;
- u64 reserved;
-} __packed;
-
-/*
- * Hyper-V uses the software reserved clean bit in VMCB
- */
-#define VMCB_HV_NESTED_ENLIGHTENMENTS VMCB_SW
-
#endif /* __ARCH_X86_KVM_SVM_HYPERV_H__ */
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 4c620999d230..3131c4476b7b 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -194,7 +194,7 @@ static bool nested_svm_vmrun_msrpm(struct vcpu_svm *svm)
if (!svm->nested.force_msr_bitmap_recalc &&
kvm_hv_hypercall_enabled(&svm->vcpu) &&
hve->hv_enlightenments_control.msr_bitmap &&
- (svm->nested.ctl.clean & BIT(VMCB_HV_NESTED_ENLIGHTENMENTS)))
+ (svm->nested.ctl.clean & BIT(HV_VMCB_NESTED_ENLIGHTENMENTS)))
goto set_msrpm_base_pa;
if (!(vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_MSR_PROT)))
diff --git a/arch/x86/kvm/svm/svm_onhyperv.c b/arch/x86/kvm/svm/svm_onhyperv.c
index 8cdc62c74a96..ed5e79392544 100644
--- a/arch/x86/kvm/svm/svm_onhyperv.c
+++ b/arch/x86/kvm/svm/svm_onhyperv.c
@@ -32,7 +32,7 @@ int svm_hv_enable_direct_tlbflush(struct kvm_vcpu *vcpu)
hve->hv_vm_id = (unsigned long)vcpu->kvm;
if (!hve->hv_enlightenments_control.nested_flush_hypercall) {
hve->hv_enlightenments_control.nested_flush_hypercall = 1;
- vmcb_mark_dirty(to_svm(vcpu)->vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS);
+ vmcb_mark_dirty(to_svm(vcpu)->vmcb, HV_VMCB_NESTED_ENLIGHTENMENTS);
}
return 0;
diff --git a/arch/x86/kvm/svm/svm_onhyperv.h b/arch/x86/kvm/svm/svm_onhyperv.h
index e2fc59380465..66e61a73caeb 100644
--- a/arch/x86/kvm/svm/svm_onhyperv.h
+++ b/arch/x86/kvm/svm/svm_onhyperv.h
@@ -64,7 +64,7 @@ static inline void svm_hv_vmcb_dirty_nested_enlightenments(
(struct hv_enlightenments *)vmcb->control.reserved_sw;
if (hve->hv_enlightenments_control.msr_bitmap)
- vmcb_mark_dirty(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS);
+ vmcb_mark_dirty(vmcb, HV_VMCB_NESTED_ENLIGHTENMENTS);
}
static inline void svm_hv_update_vp_id(struct vmcb *vmcb,
@@ -76,7 +76,7 @@ static inline void svm_hv_update_vp_id(struct vmcb *vmcb,
if (hve->hv_vp_id != vp_index) {
hve->hv_vp_id = vp_index;
- vmcb_mark_dirty(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS);
+ vmcb_mark_dirty(vmcb, HV_VMCB_NESTED_ENLIGHTENMENTS);
}
}
#else
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 a380ad7bb9b3..5060fcfe1760 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_svm_test.c
@@ -39,7 +39,7 @@ struct hv_enlightenments {
/*
* Hyper-V uses the software reserved clean bit in VMCB
*/
-#define VMCB_HV_NESTED_ENLIGHTENMENTS (1U << 31)
+#define HV_VMCB_NESTED_ENLIGHTENMENTS (1U << 31)
void l2_guest_code(void)
{
@@ -98,14 +98,14 @@ static void __attribute__((__flatten__)) guest_code(struct svm_test_data *svm)
/* Intercept RDMSR 0xc0000101 without telling KVM about it */
set_bit(2 * (MSR_GS_BASE & 0x1fff), svm->msr + 0x800);
/* Make sure HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP is set */
- vmcb->control.clean |= VMCB_HV_NESTED_ENLIGHTENMENTS;
+ vmcb->control.clean |= HV_VMCB_NESTED_ENLIGHTENMENTS;
run_guest(vmcb, svm->vmcb_gpa);
/* Make sure we don't see SVM_EXIT_MSR here so eMSR bitmap works */
GUEST_ASSERT(vmcb->control.exit_code == SVM_EXIT_VMMCALL);
vmcb->save.rip += 3; /* vmcall */
/* Now tell KVM we've changed MSR-Bitmap */
- vmcb->control.clean &= ~VMCB_HV_NESTED_ENLIGHTENMENTS;
+ vmcb->control.clean &= ~HV_VMCB_NESTED_ENLIGHTENMENTS;
run_guest(vmcb, svm->vmcb_gpa);
GUEST_ASSERT(vmcb->control.exit_code == SVM_EXIT_MSR);
vmcb->save.rip += 2; /* rdmsr */
--
2.37.3
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