Re: [PATCH v4 0/8] Implement generic cc_platform_has() helper function
From: Borislav Petkov <bp@alien8.de>
Date: 2021-09-28 20:58:19
Also in:
amd-gfx, dri-devel, kexec, kvm, linux-efi, linux-iommu, linux-s390, lkml, platform-driver-x86
On Tue, Sep 28, 2021 at 01:48:46PM -0700, Kuppuswamy, Sathyanarayanan wrote:
Just read it. If you want to use cpuid_has_tdx_guest() directly in cc_platform_has(), then you want to rename intel_cc_platform_has() to tdx_cc_platform_has()?
Why?
You simply do:
if (cpuid_has_tdx_guest())
intel_cc_platform_has(...);
and lemme paste from that mail: " ...you should use
cpuid_has_tdx_guest() instead but cache its result so that you don't
call CPUID each time the kernel executes cc_platform_has()."
Makes sense?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette