Re: [PATCH v3 0/2] x86: enforce and cleanup RIP-relative accesses in early boot code

From: Borislav Petkov
Date: Wed Jan 31 2024 - 13:30:39 EST


On Wed, Jan 31, 2024 at 10:16:55AM -0800, Jacob Xu wrote:
> We're interested in fixing SEV-SNP guest boots which are currently
> broken when using a guest kernel compiled with clang. It seems like
> every other user of SEV/SNP linux kernel code uses GCC to compile the
> kernel so they've avoided this issue.

Lemme give that a try here.

> E.g. Google COS uses clang to compile the kernel and we've made do
> with an internal fix for a while.

Which means that, theoretically, you could forward-port this internal
fix until the issue is fixed for real, I'd say.

--
Regards/Gruss,
Boris.

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