From: Emanuele Giuseppe Esposito <eesposit@redhat.com>
To: kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Maxim Levitsky <mlevitsk@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org,
Emanuele Giuseppe Esposito <eesposit@redhat.com>
Subject: [PATCH v3 8/8] nSVM: remove unnecessary parameter in nested_vmcb_check_controls
Date: Mon, 11 Oct 2021 10:37:02 -0400 [thread overview]
Message-ID: <20211011143702.1786568-9-eesposit@redhat.com> (raw)
In-Reply-To: <20211011143702.1786568-1-eesposit@redhat.com>
Just as in nested_vmcb_valid_sregs, we only need the vcpu param
to perform the checks on vmcb nested state, since we always
look at the cached fields.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
---
arch/x86/kvm/svm/nested.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 13be1002ad1c..19bce3819cce 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -209,9 +209,11 @@ static bool nested_svm_check_bitmap_pa(struct kvm_vcpu *vcpu, u64 pa, u32 size)
kvm_vcpu_is_legal_gpa(vcpu, addr + size - 1);
}
-static bool nested_vmcb_check_controls(struct kvm_vcpu *vcpu,
- struct vmcb_ctrl_area_cached *control)
+static bool nested_vmcb_check_controls(struct kvm_vcpu *vcpu)
{
+ struct vcpu_svm *svm = to_svm(vcpu);
+ struct vmcb_ctrl_area_cached *control = &svm->nested.ctl;
+
if (CC(!vmcb12_is_intercept(control, INTERCEPT_VMRUN)))
return false;
@@ -651,7 +653,7 @@ int nested_svm_vmrun(struct kvm_vcpu *vcpu)
nested_copy_vmcb_save_to_cache(svm, &vmcb12->save);
if (!nested_vmcb_valid_sregs(vcpu) ||
- !nested_vmcb_check_controls(vcpu, &svm->nested.ctl)) {
+ !nested_vmcb_check_controls(vcpu)) {
vmcb12->control.exit_code = SVM_EXIT_ERR;
vmcb12->control.exit_code_hi = 0;
vmcb12->control.exit_info_1 = 0;
@@ -1367,7 +1369,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu,
ret = -EINVAL;
nested_copy_vmcb_control_to_cache(svm, ctl);
- if (!nested_vmcb_check_controls(vcpu, &svm->nested.ctl))
+ if (!nested_vmcb_check_controls(vcpu))
goto out_free_ctl;
/*
--
2.27.0
next prev parent reply other threads:[~2021-10-11 14:38 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 14:36 [PATCH v3 0/8] KVM: nSVM: avoid TOC/TOU race when checking vmcb12 Emanuele Giuseppe Esposito
2021-10-11 14:36 ` [PATCH v3 1/8] KVM: nSVM: move nested_vmcb_check_cr3_cr4 logic in nested_vmcb_valid_sregs Emanuele Giuseppe Esposito
2021-10-11 14:36 ` [PATCH v3 2/8] nSVM: introduce smv->nested.save to cache save area fields Emanuele Giuseppe Esposito
2021-10-22 14:46 ` Maxim Levitsky
2021-10-11 14:36 ` [PATCH v3 3/8] nSVM: rename nested_load_control_from_vmcb12 in nested_copy_vmcb_control_to_cache Emanuele Giuseppe Esposito
2021-10-22 14:46 ` Maxim Levitsky
2021-10-11 14:36 ` [PATCH v3 4/8] nSVM: use vmcb_save_area_cached in nested_vmcb_valid_sregs() Emanuele Giuseppe Esposito
2021-10-22 7:14 ` Paolo Bonzini
2021-10-22 13:48 ` Emanuele Giuseppe Esposito
2021-10-22 14:48 ` Maxim Levitsky
2021-10-11 14:36 ` [PATCH v3 5/8] nSVM: use svm->nested.save to load vmcb12 registers and avoid TOC/TOU races Emanuele Giuseppe Esposito
2021-10-22 14:48 ` Maxim Levitsky
2021-10-11 14:37 ` [PATCH v3 6/8] nSVM: introduce struct vmcb_ctrl_area_cached Emanuele Giuseppe Esposito
2021-10-22 14:49 ` Maxim Levitsky
2021-10-11 14:37 ` [PATCH v3 7/8] nSVM: use vmcb_ctrl_area_cached instead of vmcb_control_area in struct svm_nested_state Emanuele Giuseppe Esposito
2021-10-22 7:14 ` Paolo Bonzini
2021-10-22 14:50 ` Maxim Levitsky
2021-10-11 14:37 ` Emanuele Giuseppe Esposito [this message]
2021-10-22 14:51 ` [PATCH v3 8/8] nSVM: remove unnecessary parameter in nested_vmcb_check_controls Maxim Levitsky
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