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Subject: Re: [PATCH v9 02/43] KVM: SVM: Create a separate mapping for the
 SEV-ES save area
To:     Borislav Petkov <bp@alien8.de>
References: <20220128171804.569796-1-brijesh.singh@amd.com>
 <20220128171804.569796-3-brijesh.singh@amd.com> <YfkvchuxmkHgnPWT@zn.tnic>
From:   Brijesh Singh <brijesh.singh@amd.com>
Message-ID: <8fe6224f-3051-8cbd-13d6-5baf888643b6@amd.com>
Date:   Wed, 9 Feb 2022 09:02:14 -0600
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On 2/1/22 7:02 AM, Borislav Petkov wrote:
> On Fri, Jan 28, 2022 at 11:17:23AM -0600, Brijesh Singh wrote:
>> From: Tom Lendacky <thomas.lendacky@amd.com>
>>
>> The save area for SEV-ES/SEV-SNP guests, as used by the hardware, is
>> different from the save area of a non SEV-ES/SEV-SNP guest.
>>
>> This is the first step in defining the multiple save areas to keep them
>> separate and ensuring proper operation amongst the different types of
>> guests. Create an SEV-ES/SEV-SNP save area and adjust usage to the new
>> save area definition where needed.
>>
>> Reviewed-by: Venu Busireddy <venu.busireddy@oracle.com>
>> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
>> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
>> ---
>>   arch/x86/include/asm/svm.h | 87 +++++++++++++++++++++++++++++---------
>>   arch/x86/kvm/svm/sev.c     | 24 +++++------
>>   arch/x86/kvm/svm/svm.h     |  2 +-
>>   3 files changed, 80 insertions(+), 33 deletions(-)
> 
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fr%2FYc2jzOunYej4vwSc%40zn.tnic&amp;data=04%7C01%7Cbrijesh.singh%40amd.com%7C909b88bb6fb14010859508d9e583268e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637793173738404187%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&amp;sdata=uOR2wyzO1%2B6K%2B%2FhZCkwlRrfQutFqpSzXKh8RVbub9cA%3D&amp;reserved=0
> 

The rename may touch more files in KVM subsystem, so, I'll work on this 
feedback while adding the SNP host support, and will submit it as a 
per-requisite for the host support.

-Brijesh