Messages in this thread | | | Date | Wed, 10 Aug 2022 16:09:02 -0700 | Subject | Re: [PATCH] x86/apic: Don't disable x2APIC if locked | From | Dave Hansen <> |
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On 8/10/22 16:03, Daniel Sneddon wrote: > On 8/10/22 15:06, Thomas Gleixner wrote: >> So this affects already deployed systems and we have to >> >> - backport the x2apic lock changes >> >> - provide proper diagnostics >> >> - make SGX and TDX depend on X2APIC support > I'll add the comments Dave mentioned earlier, and will make SGX and TDX depend > on X2APIC since that makes sense regardless of what hw ends up with this change. > Unless we want to get rid of CONFIG_X86_X2APIC like Dave mentioned?
The TDX guest support in the kernel isn't _actually_ related to this*. It's the host-side support that matters and that isn't merged yet. I've cc'd Kai so he doesn't forget to do this.
I agree on the SGX side, though.
* TDX guest support already has this dependency, but it's for unrelated reasons:
config INTEL_TDX_GUEST bool "Intel TDX (Trust Domain Extensions) - Guest Support" depends on X86_64 && CPU_SUP_INTEL depends on X86_X2APIC
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