Commit
761e4169346553c180bbd4a383aedd72f905bc9a created a wrong mask for the
CR3 MBZ bits. According to APM vol 2, only the upper 12 bits are MBZ.
Fixes:
761e41693465 ("KVM: nSVM: Check that MBZ bits in CR3 and CR4 are not set on vmrun of nested guests", 2020-07-08)
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Message-Id: <
20200829004824.4577-2-krish.sadhukhan@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
} else {
if (!(vmcb12->save.cr4 & X86_CR4_PAE) ||
!(vmcb12->save.cr0 & X86_CR0_PE) ||
- (vmcb12->save.cr3 & MSR_CR3_LONG_RESERVED_MASK))
+ (vmcb12->save.cr3 & MSR_CR3_LONG_MBZ_MASK))
return false;
}
if (kvm_valid_cr4(&svm->vcpu, vmcb12->save.cr4))
/* svm.c */
#define MSR_CR3_LEGACY_RESERVED_MASK 0xfe7U
#define MSR_CR3_LEGACY_PAE_RESERVED_MASK 0x7U
-#define MSR_CR3_LONG_RESERVED_MASK 0xfff0000000000fe7U
+#define MSR_CR3_LONG_MBZ_MASK 0xfff0000000000000U
#define MSR_INVALID 0xffffffffU
u32 svm_msrpm_offset(u32 msr);