linux-kernel - Re: [PATCH Part2 v6 02/49] iommu/amd: Introduce function to check SEV-SNP support

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Message-ID: <YsRLyoylnTHkgfa1@zn.tnic>
Date:   Tue, 5 Jul 2022 16:33:46 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     "Kalra, Ashish" <Ashish.Kalra@....com>
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Subject: Re: [PATCH Part2 v6 02/49] iommu/amd: Introduce function to check
 SEV-SNP support

On Tue, Jul 05, 2022 at 01:56:00PM +0000, Kalra, Ashish wrote:
> This function is required to ensure that IOMMU supports the SEV-SNP
> feature before enabling the SNP feature and calling SNP_INIT.
> This IOMMU support check is done in the AMD IOMMU driver with the
> iommu_sev_snp_supported() function so it is exported by the IOMMU
> driver and called by sev module

What sev module?

The call to iommu_sev_snp_supported() is done by snp_rmptable_init()
which is in arch/x86/kernel/sev.c. AFAICT.

And that is not a module. But function exports are done for modules.

So that export looks superfluous.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette