Re: [PATCH v2] x86/mm: fix pg_level_to_pfn for 5-level paging mode.
From: Borislav Petkov
Date: Wed Oct 18 2023 - 16:31:08 EST
On Wed, Oct 18, 2023 at 07:06:26PM +0000, Ashish Kalra wrote:
> From: Ashish Kalra <ashish.kalra@xxxxxxx>
>
> Add support for 5-level paging in pg_level_to_pfn().
>
> This issue was found during working on SNP guest kexec support,
> this helper function is used during early boot stage for setting
> of C-bit on the PTEs and additionally need this same helper for
> switching shared pages to private during guest kexec.
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Thx.
--
Regards/Gruss,
Boris.
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