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Message-Id: <20210408075436.13829-1-lihaiwei.kernel@gmail.com>
Date: Thu, 8 Apr 2021 15:54:36 +0800
From: lihaiwei.kernel@...il.com
To: linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc: pbonzini@...hat.com, seanjc@...gle.com, vkuznets@...hat.com,
wanpengli@...cent.com, jmattson@...gle.com, joro@...tes.org,
Haiwei Li <lihaiwei@...cent.com>
Subject: [PATCH] KVM: vmx: add mismatched size in vmcs_check32
From: Haiwei Li <lihaiwei@...cent.com>
vmcs_check32 misses the check for 64-bit and 64-bit high.
Signed-off-by: Haiwei Li <lihaiwei@...cent.com>
---
arch/x86/kvm/vmx/vmx_ops.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/x86/kvm/vmx/vmx_ops.h b/arch/x86/kvm/vmx/vmx_ops.h
index 692b0c3..164b64f 100644
--- a/arch/x86/kvm/vmx/vmx_ops.h
+++ b/arch/x86/kvm/vmx/vmx_ops.h
@@ -37,6 +37,10 @@ static __always_inline void vmcs_check32(unsigned long field)
{
BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0,
"32-bit accessor invalid for 16-bit field");
+ BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2000,
+ "32-bit accessor invalid for 64-bit field");
+ BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
+ "32-bit accessor invalid for 64-bit high field");
BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
"32-bit accessor invalid for natural width field");
}
--
1.8.3.1
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