From: Tom Lendacky <thomas.lendacky@amd.com>
To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Brijesh Singh <brijesh.singh@amd.com>
Subject: [PATCH v3 06/34] KVM: x86: Mark GPRs dirty when written
Date: Mon, 9 Nov 2020 16:25:32 -0600 [thread overview]
Message-ID: <a3420e28ecbe3215aa3a321dacbb14e24cee30fd.1604960760.git.thomas.lendacky@amd.com> (raw)
In-Reply-To: <cover.1604960760.git.thomas.lendacky@amd.com>
From: Tom Lendacky <thomas.lendacky@amd.com>
When performing VMGEXIT processing for an SEV-ES guest, register values
will be synced between KVM and the GHCB. Prepare for detecting when a GPR
has been updated (marked dirty) in order to determine whether to sync the
register to the GHCB.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
---
arch/x86/kvm/kvm_cache_regs.h | 51 ++++++++++++++++++-----------------
1 file changed, 26 insertions(+), 25 deletions(-)
diff --git a/arch/x86/kvm/kvm_cache_regs.h b/arch/x86/kvm/kvm_cache_regs.h
index a889563ad02d..f15bc16de07c 100644
--- a/arch/x86/kvm/kvm_cache_regs.h
+++ b/arch/x86/kvm/kvm_cache_regs.h
@@ -9,6 +9,31 @@
(X86_CR4_PVI | X86_CR4_DE | X86_CR4_PCE | X86_CR4_OSFXSR \
| X86_CR4_OSXMMEXCPT | X86_CR4_PGE | X86_CR4_TSD | X86_CR4_FSGSBASE)
+static inline bool kvm_register_is_available(struct kvm_vcpu *vcpu,
+ enum kvm_reg reg)
+{
+ return test_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
+}
+
+static inline bool kvm_register_is_dirty(struct kvm_vcpu *vcpu,
+ enum kvm_reg reg)
+{
+ return test_bit(reg, (unsigned long *)&vcpu->arch.regs_dirty);
+}
+
+static inline void kvm_register_mark_available(struct kvm_vcpu *vcpu,
+ enum kvm_reg reg)
+{
+ __set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
+}
+
+static inline void kvm_register_mark_dirty(struct kvm_vcpu *vcpu,
+ enum kvm_reg reg)
+{
+ __set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
+ __set_bit(reg, (unsigned long *)&vcpu->arch.regs_dirty);
+}
+
#define BUILD_KVM_GPR_ACCESSORS(lname, uname) \
static __always_inline unsigned long kvm_##lname##_read(struct kvm_vcpu *vcpu)\
{ \
@@ -18,6 +43,7 @@ static __always_inline void kvm_##lname##_write(struct kvm_vcpu *vcpu, \
unsigned long val) \
{ \
vcpu->arch.regs[VCPU_REGS_##uname] = val; \
+ kvm_register_mark_dirty(vcpu, VCPU_REGS_##uname); \
}
BUILD_KVM_GPR_ACCESSORS(rax, RAX)
BUILD_KVM_GPR_ACCESSORS(rbx, RBX)
@@ -37,31 +63,6 @@ BUILD_KVM_GPR_ACCESSORS(r14, R14)
BUILD_KVM_GPR_ACCESSORS(r15, R15)
#endif
-static inline bool kvm_register_is_available(struct kvm_vcpu *vcpu,
- enum kvm_reg reg)
-{
- return test_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
-}
-
-static inline bool kvm_register_is_dirty(struct kvm_vcpu *vcpu,
- enum kvm_reg reg)
-{
- return test_bit(reg, (unsigned long *)&vcpu->arch.regs_dirty);
-}
-
-static inline void kvm_register_mark_available(struct kvm_vcpu *vcpu,
- enum kvm_reg reg)
-{
- __set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
-}
-
-static inline void kvm_register_mark_dirty(struct kvm_vcpu *vcpu,
- enum kvm_reg reg)
-{
- __set_bit(reg, (unsigned long *)&vcpu->arch.regs_avail);
- __set_bit(reg, (unsigned long *)&vcpu->arch.regs_dirty);
-}
-
static inline unsigned long kvm_register_read(struct kvm_vcpu *vcpu, int reg)
{
if (WARN_ON_ONCE((unsigned int)reg >= NR_VCPU_REGS))
--
2.28.0
next prev parent reply other threads:[~2020-11-09 22:27 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-09 22:25 [PATCH v3 00/34] SEV-ES hypervisor support Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 01/34] x86/cpu: Add VM page flush MSR availablility as a CPUID feature Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 02/34] KVM: SVM: Remove the call to sev_platform_status() during setup Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 03/34] KVM: SVM: Add support for SEV-ES capability in KVM Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 04/34] KVM: SVM: Add GHCB accessor functions for retrieving fields Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 05/34] KVM: SVM: Add support for the SEV-ES VMSA Tom Lendacky
2020-11-10 3:25 ` kernel test robot
2020-11-10 3:25 ` kernel test robot
2020-11-09 22:25 ` Tom Lendacky [this message]
2020-11-09 22:25 ` [PATCH v3 07/34] KVM: SVM: Add required changes to support intercepts under SEV-ES Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 08/34] KVM: SVM: Prevent debugging " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 09/34] KVM: SVM: Do not allow instruction emulation " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 10/34] KVM: SVM: Cannot re-initialize the VMCB after shutdown with SEV-ES Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 11/34] KVM: SVM: Prepare for SEV-ES exit handling in the sev.c file Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 12/34] KVM: SVM: Add initial support for a VMGEXIT VMEXIT Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 13/34] KVM: SVM: Create trace events for VMGEXIT processing Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 14/34] KVM: SVM: Add support for SEV-ES GHCB MSR protocol function 0x002 Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 15/34] KVM: SVM: Add support for SEV-ES GHCB MSR protocol function 0x004 Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 16/34] KVM: SVM: Add support for SEV-ES GHCB MSR protocol function 0x100 Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 17/34] KVM: SVM: Create trace events for VMGEXIT MSR protocol processing Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 18/34] KVM: SVM: Support MMIO for an SEV-ES guest Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 19/34] KVM: SVM: Support string IO operations " Tom Lendacky
2020-11-10 3:56 ` kernel test robot
2020-11-10 3:56 ` kernel test robot
2020-11-09 22:25 ` [PATCH v3 20/34] KVM: SVM: Add support for EFER write traps " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 21/34] KVM: SVM: Add support for CR0 " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 22/34] KVM: SVM: Add support for CR4 " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 23/34] KVM: SVM: Add support for CR8 " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 24/34] KVM: x86: Update __get_sregs() / __set_sregs() to support SEV-ES Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 25/34] KVM: SVM: Do not report support for SMM for an SEV-ES guest Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 26/34] KVM: SVM: Guest FPU state save/restore not needed for " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 27/34] KVM: SVM: Add support for booting APs for an " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 28/34] KVM: SVM: Add NMI support " Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 29/34] KVM: SVM: Set the encryption mask for the SVM host save area Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 30/34] KVM: SVM: Update ASID allocation to support SEV-ES guests Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 31/34] KVM: SVM: Provide support for SEV-ES vCPU creation/loading Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 32/34] KVM: SVM: Provide support for SEV-ES vCPU loading Tom Lendacky
2020-11-09 22:25 ` [PATCH v3 33/34] KVM: SVM: Provide an updated VMRUN invocation for SEV-ES guests Tom Lendacky
2020-11-09 22:26 ` [PATCH v3 34/34] KVM: SVM: Provide support to launch and run an SEV-ES guest Tom Lendacky
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