Re: [PATCH v2 04/10] KVM: x86/mmu: Make __kvm_mmu_do_page_fault() return mapped level

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Subject: Re: [PATCH v2 04/10] KVM: x86/mmu: Make __kvm_mmu_do_page_fault() return mapped level
From: "Edgecombe, Rick P" <rick.p.edgecombe@xxxxxxxxx>
Date: Tue, 16 Apr 2024 14:40:39 +0000
Accept-language: en-US
Cc: "seanjc@xxxxxxxxxx" <seanjc@xxxxxxxxxx>, "Huang, Kai" <kai.huang@xxxxxxxxx>, "federico.parola@xxxxxxxxx" <federico.parola@xxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "isaku.yamahata@xxxxxxxxx" <isaku.yamahata@xxxxxxxxx>, "dmatlack@xxxxxxxxxx" <dmatlack@xxxxxxxxxx>, "michael.roth@xxxxxxx" <michael.roth@xxxxxxx>, "pbonzini@xxxxxxxxxx" <pbonzini@xxxxxxxxxx>
In-reply-to: <eabc3f3e5eb03b370cadf6e1901ea34d7a020adc.1712785629.git.isaku.yamahata@intel.com>
References: <cover.1712785629.git.isaku.yamahata@intel.com> <eabc3f3e5eb03b370cadf6e1901ea34d7a020adc.1712785629.git.isaku.yamahata@intel.com>
User-agent: Evolution 3.44.4-0ubuntu2

On Wed, 2024-04-10 at 15:07 -0700, isaku.yamahata@xxxxxxxxx wrote:
> From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
> 
> The guest memory population logic will need to know what page size or level
> (4K, 2M, ...) is mapped.

TDX needs this, but do the normal VM users need to have it fixed to 4k? Is it
actually good?

> 
> Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>

Follow-Ups:
- Re: [PATCH v2 04/10] KVM: x86/mmu: Make __kvm_mmu_do_page_fault() return mapped level
  - From: Isaku Yamahata

References:
- [PATCH v2 00/10] KVM: Guest Memory Pre-Population API
  - From: isaku . yamahata
- [PATCH v2 04/10] KVM: x86/mmu: Make __kvm_mmu_do_page_fault() return mapped level
  - From: isaku . yamahata

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