linux-kernel - Re: [PATCH 0/4] x86/sev: Rework SNP Guest Request

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Message-ID: <fae08232-51ed-cc88-3de0-1cd9b014603b@amd.com>
Date: Tue, 6 May 2025 13:55:03 -0500
From: Tom Lendacky <thomas.lendacky@....com>
To: Alexey Kardashevskiy <aik@....com>, x86@...nel.org
Cc: linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
 Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
 Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>,
 Nikunj A Dadhania <nikunj@....com>, Ard Biesheuvel <ardb@...nel.org>,
 Brijesh Singh <brijesh.singh@....com>, Ashish Kalra <ashish.kalra@....com>,
 Paolo Bonzini <pbonzini@...hat.com>, Michael Roth <michael.roth@....com>,
 Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>,
 Liam Merwick <liam.merwick@...cle.com>
Subject: Re: [PATCH 0/4] x86/sev: Rework SNP Guest Request

On 5/5/25 09:12, Alexey Kardashevskiy wrote:
> Started as a part of the fix for
> ae596615d93d ("virt: sev-guest: Reduce the scope of SNP command mutex")
> 
> these are the remainder of followup fixes/improvements as
> the SNP Guest Request code evolved enough to make it a bit hard to
> follow.
> 
> 
> This is based on sha1
> 6c201ee95a30 Ingo Molnar "Merge branch into tip/master: 'x86/sgx'".
> 
> Please comment. Thanks.
> 
> 
> 
> Alexey Kardashevskiy (4):
>   virt: sev-guest: Contain snp_guest_request_ioctl in sev-guest
>   x86/sev: Allocate request in TSC_INFO_REQ on stack
>   x86/sev: Document requirement for linear mapping of Guest Request
>     buffers
>   x86/sev: Drop unnecessary parameter in snp_issue_guest_request
> 
>  arch/x86/include/asm/sev.h              | 10 ++-
>  arch/x86/coco/sev/core.c                | 73 +++++++++-----------
>  drivers/virt/coco/sev-guest/sev-guest.c |  9 ++-
>  3 files changed, 44 insertions(+), 48 deletions(-)

For the series:

Reviewed-by: Tom Lendacky <thomas.lendacky@....com>

>