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From: Cathy Avery <cavery@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, pbonzini@redhat.com
Cc: vkuznets@redhat.com, wei.huang2@amd.com, mlevitsk@redhat.com
Subject: [PATCH v2 1/2] KVM: SVM: Move asid to vcpu_svm
Date: Sun, 11 Oct 2020 14:48:17 -0400	[thread overview]
Message-ID: <20201011184818.3609-2-cavery@redhat.com> (raw)
In-Reply-To: <20201011184818.3609-1-cavery@redhat.com>

Move asid to svm->asid to allow for vmcb assignment
during svm_vcpu_run without regard to which level
guest is running.

Signed-off-by: Cathy Avery <cavery@redhat.com>
---
 arch/x86/kvm/svm/svm.c | 4 +++-
 arch/x86/kvm/svm/svm.h | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index d4e18bda19c7..619980a5d540 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -1101,6 +1101,7 @@ static void init_vmcb(struct vcpu_svm *svm)
 		save->cr4 = 0;
 	}
 	svm->asid_generation = 0;
+	svm->asid = 0;
 
 	svm->nested.vmcb = 0;
 	svm->vcpu.arch.hflags = 0;
@@ -1663,7 +1664,7 @@ static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *sd)
 	}
 
 	svm->asid_generation = sd->asid_generation;
-	svm->vmcb->control.asid = sd->next_asid++;
+	svm->asid = sd->next_asid++;
 
 	vmcb_mark_dirty(svm->vmcb, VMCB_ASID);
 }
@@ -3446,6 +3447,7 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
 
 	sync_lapic_to_cr8(vcpu);
 
+	svm->vmcb->control.asid = svm->asid;
 	svm->vmcb->save.cr2 = vcpu->arch.cr2;
 
 	/*
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index a798e1731709..862f0d2405e8 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -104,6 +104,7 @@ struct vcpu_svm {
 	struct vmcb *vmcb;
 	unsigned long vmcb_pa;
 	struct svm_cpu_data *svm_data;
+	u32 asid;
 	uint64_t asid_generation;
 	uint64_t sysenter_esp;
 	uint64_t sysenter_eip;
-- 
2.20.1


  reply	other threads:[~2020-10-11 18:48 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-11 18:48 [PATCH v2 0/2] KVM: SVM: Create separate vmcbs for L1 and L2 Cathy Avery
2020-10-11 18:48 ` Cathy Avery [this message]
2020-10-13  1:29   ` [PATCH v2 1/2] KVM: SVM: Move asid to vcpu_svm Sean Christopherson
2020-11-13 17:03     ` Paolo Bonzini
2020-11-13 16:57   ` Paolo Bonzini
2020-11-29  9:41     ` Ashish Kalra
2020-11-30 14:41       ` Paolo Bonzini
2020-11-30 21:06         ` Ashish Kalra
2020-10-11 18:48 ` [PATCH v2 2/2] KVM: SVM: Use a separate vmcb for the nested L2 guest Cathy Avery
2020-10-13  1:33   ` Sean Christopherson
2020-11-13 17:36     ` Paolo Bonzini
2020-11-13 17:58   ` Paolo Bonzini
2020-11-13 20:38     ` Paolo Bonzini
2020-11-17 11:03 ` [PATCH v2 0/2] KVM: SVM: Create separate vmcbs for L1 and L2 Paolo Bonzini

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