linux-kernel - Re: [PATCH v5 15/22] x86/virt/tdx: Allocate and set up PAMTs for TDMRs

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Message-ID: <cd20e976db25b16ed5152bb3c6dc357d64922c5f.camel@intel.com>
Date:   Tue, 28 Jun 2022 11:05:40 +1200
From:   Kai Huang <kai.huang@...el.com>
To:     Dave Hansen <dave.hansen@...el.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     seanjc@...gle.com, pbonzini@...hat.com, len.brown@...el.com,
        tony.luck@...el.com, rafael.j.wysocki@...el.com,
        reinette.chatre@...el.com, dan.j.williams@...el.com,
        peterz@...radead.org, ak@...ux.intel.com,
        kirill.shutemov@...ux.intel.com,
        sathyanarayanan.kuppuswamy@...ux.intel.com,
        isaku.yamahata@...el.com
Subject: Re: [PATCH v5 15/22] x86/virt/tdx: Allocate and set up PAMTs for
 TDMRs

On Mon, 2022-06-27 at 15:57 -0700, Dave Hansen wrote:
> On 6/27/22 15:50, Kai Huang wrote:
> > > Are Kirill's magic 0/1/2 numbers the same as
> > > 
> > > 	TDX_PG_4K,
> > > 	TDX_PG_2M,
> > > 	TDX_PG_1G,
> > > 
> > > ?
> > Yes they are the same.  Kirill uses 0/1/2 as input of TDX_ACCEPT_PAGE TDCALL. 
> > Here I only need them to distinguish different page sizes.
> > 
> > Do you mean we should put TDX_PG_4K/2M/1G definition to asm/tdx.h, and
> > try_accept_one() should use them instead of magic 0/1/2?
> 
> I honestly don't care how you do it as long as the magic numbers go away
> (within reason).

OK.  I'll write a patch to replace 0/1/2 magic numbers in try_accept_one().

-- 
Thanks,
-Kai