Messages in this thread Patch in this message | | | From | Lai Jiangshan <> | Subject | [PATCH 09/15] KVM: SVM: Remove the unneeded code to mark available for CR3 | Date | Mon, 8 Nov 2021 20:44:01 +0800 |
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From: Lai Jiangshan <laijs@linux.alibaba.com>
VCPU_EXREG_CR3 is never cleared from vcpu->arch.regs_avail in SVM so marking available for CR3 is mere an NOP, just remove it.
And it is not required to mark it dirty since VCPU_EXREG_CR3 is neither never cleared from vcpu->arch.regs_dirty and SVM doesn't use the dirty information of VCPU_EXREG_CR3.
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com> --- arch/x86/kvm/svm/nested.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index 13a58722e097..2d88ff584d61 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -444,7 +444,6 @@ static int nested_svm_load_cr3(struct kvm_vcpu *vcpu, unsigned long cr3, kvm_mmu_new_pgd(vcpu, cr3); vcpu->arch.cr3 = cr3; - kvm_register_mark_available(vcpu, VCPU_EXREG_CR3); /* Re-initialize the MMU, e.g. to pick up CR4 MMU role changes. */ kvm_init_mmu(vcpu); -- 2.19.1.6.gb485710b
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