Re: [PATCH v4 1/2] x86/sev: Clear RMPOPT when segmented RMP is disabled by firmware

[Borislav Petkov]

On Mon, Nov 02, 2026 at 11:42:05AM +0530, K Prateek Nayak wrote:
> On 11/2/2026 10:58 AM, Borislav Petkov wrote:
> > Segmented RMP support is advertised via X86_FEATURE_SEGMENTED_RMP, and the
> > firmware enables it via MSR_AMD64_RMP_CFG[SEG_RMP_ENABLED]. The latter can be
> > cleared in platform BIOS by the user, in which case the system runs in
> > contiguous RMP setting.
> 
> nit. In the latter case, SNP is disabled entirely in bsp_determine_snp and
> the system won't continue with contiguous RMP.

Ah, true, good catch.

Thx.

-- 
Regards/Gruss,
    Boris.

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