[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <SN6PR12MB2767FDC22657E683F7467F9A8E9A9@SN6PR12MB2767.namprd12.prod.outlook.com>
Date: Mon, 1 Aug 2022 23:32:21 +0000
From: "Kalra, Ashish" <Ashish.Kalra@....com>
To: Borislav Petkov <bp@...en8.de>
CC: "Dr. David Alan Gilbert" <dgilbert@...hat.com>,
"x86@...nel.org" <x86@...nel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
"linux-coco@...ts.linux.dev" <linux-coco@...ts.linux.dev>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
"tglx@...utronix.de" <tglx@...utronix.de>,
"mingo@...hat.com" <mingo@...hat.com>,
"jroedel@...e.de" <jroedel@...e.de>,
"Lendacky, Thomas" <Thomas.Lendacky@....com>,
"hpa@...or.com" <hpa@...or.com>,
"ardb@...nel.org" <ardb@...nel.org>,
"pbonzini@...hat.com" <pbonzini@...hat.com>,
"seanjc@...gle.com" <seanjc@...gle.com>,
"vkuznets@...hat.com" <vkuznets@...hat.com>,
"jmattson@...gle.com" <jmattson@...gle.com>,
"luto@...nel.org" <luto@...nel.org>,
"dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
"slp@...hat.com" <slp@...hat.com>,
"pgonda@...gle.com" <pgonda@...gle.com>,
"peterz@...radead.org" <peterz@...radead.org>,
"srinivas.pandruvada@...ux.intel.com"
<srinivas.pandruvada@...ux.intel.com>,
"rientjes@...gle.com" <rientjes@...gle.com>,
"dovmurik@...ux.ibm.com" <dovmurik@...ux.ibm.com>,
"tobin@....com" <tobin@....com>,
"Roth, Michael" <Michael.Roth@....com>,
"vbabka@...e.cz" <vbabka@...e.cz>,
"kirill@...temov.name" <kirill@...temov.name>,
"ak@...ux.intel.com" <ak@...ux.intel.com>,
"tony.luck@...el.com" <tony.luck@...el.com>,
"marcorr@...gle.com" <marcorr@...gle.com>,
"sathyanarayanan.kuppuswamy@...ux.intel.com"
<sathyanarayanan.kuppuswamy@...ux.intel.com>,
"alpergun@...gle.com" <alpergun@...gle.com>,
"jarkko@...nel.org" <jarkko@...nel.org>
Subject: RE: [PATCH Part2 v6 06/49] x86/sev: Add helper functions for
RMPUPDATE and PSMASH instruction
[AMD Official Use Only - General]
Hello Boris,
>> Yes, I will be adding a check for CPU family/model as following :
>Why if the PPR is already kinda spelling the already architectural pieces of the RMP entry?
>"In order to assist software" it says.
The PPR specifies select portions of the RMP entry format for a specific core/platform.
Therefore, the complete struct rmpentry definition is non-architectural.
As per PPR, software should not rely on any field definitions not specified
in this table and the format of an RMP entry may change in future processors.
>So you call the specified ones by their name and the rest is __rsvd.
>No need for model checks at all.
>Right?
But we can't use this struct on a core/platform which has a different layout, so aren't
the model checks required ?
Thanks,
Ashish
Powered by blists - more mailing lists