Re: [PATCH v8 03/16] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC

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To: Kai Huang <kai.huang@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx
Subject: Re: [PATCH v8 03/16] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC
From: Dave Hansen <dave.hansen@xxxxxxxxx>
Date: Fri, 6 Jan 2023 11:04:55 -0800
Cc: linux-mm@xxxxxxxxx, peterz@xxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, seanjc@xxxxxxxxxx, pbonzini@xxxxxxxxxx, dan.j.williams@xxxxxxxxx, rafael.j.wysocki@xxxxxxxxx, kirill.shutemov@xxxxxxxxxxxxxxx, ying.huang@xxxxxxxxx, reinette.chatre@xxxxxxxxx, len.brown@xxxxxxxxx, tony.luck@xxxxxxxxx, ak@xxxxxxxxxxxxxxx, isaku.yamahata@xxxxxxxxx, chao.gao@xxxxxxxxx, sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx, bagasdotme@xxxxxxxxx, sagis@xxxxxxxxxx, imammedo@xxxxxxxxxx
In-reply-to: <514a6c330ef5fc214d32bcbcc7a77dc825e857df.1670566861.git.kai.huang@intel.com>
References: <cover.1670566861.git.kai.huang@intel.com> <514a6c330ef5fc214d32bcbcc7a77dc825e857df.1670566861.git.kai.huang@intel.com>
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On 12/8/22 22:52, Kai Huang wrote:
> TDX capable platforms are locked to X2APIC mode and cannot fall back to
> the legacy xAPIC mode when TDX is enabled by the BIOS.  TDX host support
> requires x2APIC.  Make INTEL_TDX_HOST depend on X86_X2APIC.

Reviewed-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>

References:
- [PATCH v8 00/16] TDX host kernel support
  - From: Kai Huang
- [PATCH v8 03/16] x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC
  - From: Kai Huang

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