Messages in this thread | | | Date | Fri, 17 Dec 2021 12:00:34 +0100 | From | Joerg Roedel <> | Subject | Re: [PATCH 3/3] x86/sev: The code for returning to user space is also in syscall gap |
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On Fri, Dec 17, 2021 at 11:30:10AM +0100, Borislav Petkov wrote: > I audited the handful instructions in there and didn't find anything > that would cause a #VC...
If the hypervisor decides to mess with the code-page for this path while a CPU is executing it. This will cause a #VC on that CPU and that could hit in the syscall return path.
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-- Jörg Rödel jroedel@suse.de
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