shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

KVM: x86: Keep MSR_IA32_XSS unchanged for INIT

Browse Source 
commit be4f3b3f82 upstream.

It has been corrected from SDM version 075 that MSR_IA32_XSS is reset to
zero on Power up and Reset but keeps unchanged on INIT.

Fixes: a554d207dc ("KVM: X86: Processor States following Reset or INIT")
Cc: stable@vger.kernel.org
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220126172226.2298529-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xiaoyao Li
2022-01-26 17:22:24 +00:00
committed by Greg Kroah-Hartman
parent e302786233
commit 5afeafcc59
1 changed files with 1 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/kvm/x86.c
View File

@@ -10990,6 +10990,7 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
vcpu->arch.msr_misc_features_enables = 0;
vcpu->arch.xcr0 = XFEATURE_MASK_FP;
vcpu->arch.ia32_xss = 0;
}
memset(vcpu->arch.regs, 0, sizeof(vcpu->arch.regs));
@@ -11008,8 +11009,6 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
eax = 0x600;
kvm_rdx_write(vcpu, eax);
vcpu->arch.ia32_xss = 0;
static_call(kvm_x86_vcpu_reset)(vcpu, init_event);
kvm_set_rflags(vcpu, X86_EFLAGS_FIXED);