[PATCH 02/11] x86/sev: Add an x86 version of prot_guest_has()

Tom Lendacky thomas.lendacky at amd.com
Thu Jul 29 07:24:34 PDT 2021

On 7/28/21 8:22 AM, Christoph Hellwig wrote:
> On Tue, Jul 27, 2021 at 05:26:05PM -0500, Tom Lendacky via iommu wrote:
>> Introduce an x86 version of the prot_guest_has() function. This will be
>> used in the more generic x86 code to replace vendor specific calls like
>> sev_active(), etc.
>> While the name suggests this is intended mainly for guests, it will
>> also be used for host memory encryption checks in place of sme_active().
>> The amd_prot_guest_has() function does not use EXPORT_SYMBOL_GPL for the
>> same reasons previously stated when changing sme_active(), sev_active and
> None of that applies here as none of the callers get pulled into
> random macros.  The only case of that is sme_me_mask through
> sme_mask, but that's not something this series replaces as far as I can
> tell.

Ok, let me make sure of that and I'll change to EXPORT_SYMBOL_GPL if
that's the case.



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