From: Sean Christopherson <seanjc@google.com>
To: Santosh Shukla <santosh.shukla@amd.com>
Cc: "陈培鸿(乘鸿)" <chenpeihong.cph@alibaba-inc.com>,
mlevitsk <mlevitsk@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Question about AMD SVM's virtual NMI support in Linux kernel mainline
Date: Fri, 25 Aug 2023 07:26:02 -0700 [thread overview]
Message-ID: <ZOi5+rMYTVpmdQ2+@google.com> (raw)
In-Reply-To: <cdad0a8b-0994-d2f3-7c68-e632ce4facf7@amd.com>
On Fri, Aug 25, 2023, Santosh Shukla wrote:
> Hi Sean,
> >> Yes, HW does set BLOCKING_MASK when HW takes the pending vNMI event.
> >
> > I'm not asking about the pending vNMI case, which is clearly spelled out in the
> > APM. I'm asking about directly injecting an NMI via:
> >
> > svm->vmcb->control.event_inj = SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_NMI;
> >
>
> Yes. This is documented in APM as well.
> https://www.amd.com/system/files/TechDocs/24593.pdf : "15.21.10 NMI Virtualization"
>
> "
> If Event Injection is used to inject an NMI when NMI Virtualization is enabled,
> VMRUN sets V_NMI_MASK in the guest state.
> "
Awesome, thank you!
prev parent reply other threads:[~2023-08-25 14:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <67fba65c-ba2a-4681-a9bc-2a6e8f0bcb92.chenpeihong.cph@alibaba-inc.com>
[not found] ` <ZOYfxgSy/SxCn0Wq@google.com>
[not found] ` <174aa0da-0b05-a2dc-7884-4f7b57abcc37@amd.com>
2023-08-24 14:22 ` Question about AMD SVM's virtual NMI support in Linux kernel mainline Sean Christopherson
2023-08-25 9:06 ` Santosh Shukla
2023-08-25 14:26 ` Sean Christopherson [this message]
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