linux-kernel - Re: [PATCH v10 01/16] x86/tdx: Define TDX supported page sizes as macros

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Date:   Thu, 16 Mar 2023 22:41:35 +0000
From:   "Huang, Kai" <kai.huang@...el.com>
To:     "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "david@...hat.com" <david@...hat.com>
CC:     "Hansen, Dave" <dave.hansen@...el.com>,
        "Luck, Tony" <tony.luck@...el.com>,
        "bagasdotme@...il.com" <bagasdotme@...il.com>,
        "ak@...ux.intel.com" <ak@...ux.intel.com>,
        "Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
        "kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "Chatre, Reinette" <reinette.chatre@...el.com>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "Yamahata, Isaku" <isaku.yamahata@...el.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "Shahar, Sagi" <sagis@...gle.com>,
        "imammedo@...hat.com" <imammedo@...hat.com>,
        "Gao, Chao" <chao.gao@...el.com>,
        "Brown, Len" <len.brown@...el.com>,
        "sathyanarayanan.kuppuswamy@...ux.intel.com" 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        "Huang, Ying" <ying.huang@...el.com>,
        "Williams, Dan J" <dan.j.williams@...el.com>
Subject: Re: [PATCH v10 01/16] x86/tdx: Define TDX supported page sizes as
 macros

On Thu, 2023-03-16 at 13:37 +0100, David Hildenbrand wrote:
> On 06.03.23 15:13, Kai Huang wrote:
> > TDX supports 4K, 2M and 1G page sizes.  The corresponding values are
> > defined by the TDX module spec and used as TDX module ABI.  Currently,
> > they are used in try_accept_one() when the TDX guest tries to accept a
> > page.  However currently try_accept_one() uses hard-coded magic values.
> > 
> > Define TDX supported page sizes as macros and get rid of the hard-coded
> > values in try_accept_one().  TDX host support will need to use them too.
> > 
> > Signed-off-by: Kai Huang <kai.huang@...el.com>
> > Reviewed-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> > Reviewed-by: Dave Hansen <dave.hansen@...ux.intel.com>
> > ---
> 
> Reviewed-by: David Hildenbrand <david@...hat.com>
> 
> 

Thanks!