From: Alejandro Vallejo <alejandro.garciavallejo@amd.com>
To: Alejandro Vallejo <alejandro.garciavallejo@amd.com>,
Sean Christopherson <seanjc@google.com>
Cc: <kvm@vger.kernel.org>, Paolo Bonzini <pbonzini@redhat.com>,
Yosry Ahmed <yosry.ahmed@linux.dev>,
Kevin Cheng <chengkev@google.com>
Subject: Re: [kvm-unit-tests] x86: Add #PF test case for the SVM DecodeAssists feature
Date: Fri, 16 Jan 2026 14:03:02 +0100 [thread overview]
Message-ID: <DFQ18MBL2M9G.24B0TSFEU8NZ1@amd.com> (raw)
In-Reply-To: <DFQ160CKADCU.1FURW65OWRT1E@amd.com>
On Fri Jan 16, 2026 at 1:59 PM CET, Alejandro Vallejo wrote:
> I didn't mean fetch as in faulted instruction, but rather the CPU hitting a
> missing PT as it fetches the 15 bytes of the codestream including and following
> the faulting instruction. That'd be...
>
> opcode_pre:
> mov ($not_present), %al /* #PF! */
> not_present: /* page boundary */
> int3; /* unmapped in the NPT */
self-correction: NPT or PT.
Cheers,
Alejandro
next prev parent reply other threads:[~2026-01-16 13:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-15 13:17 [PATCH] KVM: nSVM: Expose SVM DecodeAssists to guest hypervisors Alejandro Vallejo
2026-01-15 16:43 ` [kvm-unit-tests] x86: Add #PF test case for the SVM DecodeAssists feature Alejandro Vallejo
2026-01-15 18:32 ` Sean Christopherson
2026-01-16 12:59 ` Alejandro Vallejo
2026-01-16 13:03 ` Alejandro Vallejo [this message]
2026-01-28 23:15 ` [PATCH] KVM: nSVM: Expose SVM DecodeAssists to guest hypervisors Jim Mattson
2026-01-29 16:53 ` Alejandro Vallejo
2026-01-29 18:08 ` Jim Mattson
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