From: linmiaohe <linmiaohe@huawei.com>
To: <pbonzini@redhat.com>, <rkrcmar@redhat.com>,
<sean.j.christopherson@intel.com>, <vkuznets@redhat.com>,
<wanpengli@tencent.com>, <jmattson@google.com>, <joro@8bytes.org>,
<tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>,
<hpa@zytor.com>
Cc: <linmiaohe@huawei.com>, <liran.alon@oracle.com>,
<kvm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<x86@kernel.org>
Subject: [PATCH v2] KVM: nVMX: vmread should not set rflags to specify success in case of #PF
Date: Sat, 28 Dec 2019 14:25:24 +0800 [thread overview]
Message-ID: <1577514324-18362-1-git-send-email-linmiaohe@huawei.com> (raw)
From: Miaohe Lin <linmiaohe@huawei.com>
In case writing to vmread destination operand result in a #PF, vmread
should not call nested_vmx_succeed() to set rflags to specify success.
Similar to as done in VMPTRST (See handle_vmptrst()).
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
v2:
rephrase commit title & message
---
arch/x86/kvm/vmx/nested.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 8edefdc9c0cb..c1ec9f25a417 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -4799,8 +4799,10 @@ static int handle_vmread(struct kvm_vcpu *vcpu)
instr_info, true, len, &gva))
return 1;
/* _system ok, nested_vmx_check_permission has verified cpl=0 */
- if (kvm_write_guest_virt_system(vcpu, gva, &value, len, &e))
+ if (kvm_write_guest_virt_system(vcpu, gva, &value, len, &e)) {
kvm_inject_page_fault(vcpu, &e);
+ return 1;
+ }
}
return nested_vmx_succeed(vcpu);
--
2.19.1
next reply other threads:[~2019-12-28 6:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-28 6:25 linmiaohe [this message]
2020-01-13 20:09 ` [PATCH v2] KVM: nVMX: vmread should not set rflags to specify success in case of #PF Sean Christopherson
2020-01-13 20:11 ` Sean Christopherson
2020-01-15 18:18 ` Paolo Bonzini
2020-01-14 2:15 linmiaohe
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