]> git.ipfire.org Git - thirdparty/kernel/linux.git/commitdiff
KVM: VMX: Modify the BUILD_BUG_ON_MSG of the 32-bit field in the vmcs_check16 function
authorQiang Liu <liuq131@chinatelecom.cn>
Tue, 2 Jul 2024 06:46:09 +0000 (06:46 +0000)
committerSean Christopherson <seanjc@google.com>
Thu, 22 Aug 2024 18:35:15 +0000 (11:35 -0700)
According to the SDM, the meaning of field bit 0 is:
Access type (0 = full; 1 = high); must be full for 16-bit, 32-bit,
and natural-width fields. So there is no 32-bit high field here,
it should be a 32-bit field instead.

Signed-off-by: Qiang Liu <liuq131@chinatelecom.cn>
Link: https://lore.kernel.org/r/20240702064609.52487-1-liuq131@chinatelecom.cn
Signed-off-by: Sean Christopherson <seanjc@google.com>
arch/x86/kvm/vmx/vmx_ops.h

index 8060e5fc6dbd83e145f6c08fca370e4a42d9861b..93e020dc88f6545b44ff0f3d9b848a8ccca25182 100644 (file)
@@ -47,7 +47,7 @@ static __always_inline void vmcs_check16(unsigned long field)
        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6001) == 0x2001,
                         "16-bit accessor invalid for 64-bit high field");
        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x4000,
-                        "16-bit accessor invalid for 32-bit high field");
+                        "16-bit accessor invalid for 32-bit field");
        BUILD_BUG_ON_MSG(__builtin_constant_p(field) && ((field) & 0x6000) == 0x6000,
                         "16-bit accessor invalid for natural width field");
 }