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SubjectRe: [PATCH] KVM: SVM: delay svm_vcpu_init_msrpm after svm->vmcb is initialized
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On 7/27/2021 11:23 AM, Vitaly Kuznetsov wrote:
> Paolo Bonzini <pbonzini@redhat.com> writes:
>
>> Right now, svm_hv_vmcb_dirty_nested_enlightenments has an incorrect
>> dereference of vmcb->control.reserved_sw before the vmcb is checked
>> for being non-NULL. The compiler is usually sinking the dereference
>> after the check; instead of doing this ourselves in the source,
>> ensure that svm_hv_vmcb_dirty_nested_enlightenments is only called
>> with a non-NULL VMCB.
>>
>> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
>> Cc: Vineeth Pillai <viremana@linux.microsoft.com>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>> [Untested for now due to issues with my AMD machine. - Paolo]
Finally got hold of an AMD machine and tested nested virt: windows on
linux on
windows with the patches applied. Did basic boot and minimal verification.

Tested-by: Vineeth Pillai <viremana@linux.microsoft.com>

Thanks,
Vineeth

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