From: Vineeth Pillai <viremana@linux.microsoft.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: Re: [PATCH] KVM: SVM: delay svm_vcpu_init_msrpm after svm->vmcb is initialized
Date: Wed, 28 Jul 2021 16:18:21 -0400 [thread overview]
Message-ID: <1d82501c-05fd-deff-9652-790cde052644@linux.microsoft.com> (raw)
In-Reply-To: <87zgu76ary.fsf@vitty.brq.redhat.com>
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
next prev parent reply other threads:[~2021-07-28 20:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-26 16:58 [PATCH] KVM: SVM: delay svm_vcpu_init_msrpm after svm->vmcb is initialized Paolo Bonzini
2021-07-27 0:41 ` Vineeth Pillai
2021-07-27 15:23 ` Vitaly Kuznetsov
2021-07-28 20:18 ` Vineeth Pillai [this message]
2021-07-29 16:30 ` Paolo Bonzini
-- strict thread matches above, loose matches on Subject: below --
2021-07-26 16:49 Paolo Bonzini
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