Re: [PATCH v2 RESEND] x86/asm: Force native_apic_mem_read to use mov

[Sidharth Telang]

> Is this blocked on an item? There seems to be consensus that this
> patch fixes a bug and is taking the right high-level approach (i.e.,
> change the guest code to avoid triggering a sequence that isn't
> supported under CVM exception-based emulation). Without something like
> this, we weren't able to build the kernel w/ CLANG when it is
> configured to run under SEV-ES.

> We sent out two versions of the patch. One that does the mov directly
> [1] and a second that calls readl [2]. Is one of these two patches
> acceptable? Or do we need to follow up on something?
> 
> [1] https://lore.kernel.org/lkml/0D6A1E49-F21B-42AA-BBBF-13BFC308BB1E@xxxxxxxxx/T/
> [2] https://lore.kernel.org/all/20220812183501.3555820-1-acdunlap@xxxxxxxxxx/

Signal-boosting this thread: is this blocked on any item?

We are still running into this issue (SEV-ES guest unexpectedly requests
termination minutes after booting) and applying this patch seems to fix it.

Thanks,
Sid