linux-kernel - Re: [PATCH v9 03/24] virt: sev-guest: Make payload a variable length array

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Message-ID: <791ffa24-261c-4814-1fb0-cf03a0753afa@amd.com>
Date: Mon, 17 Jun 2024 15:51:38 -0500
From: Tom Lendacky <thomas.lendacky@....com>
To: Nikunj A Dadhania <nikunj@....com>, linux-kernel@...r.kernel.org,
 bp@...en8.de, x86@...nel.org, kvm@...r.kernel.org
Cc: mingo@...hat.com, tglx@...utronix.de, dave.hansen@...ux.intel.com,
 pgonda@...gle.com, seanjc@...gle.com, pbonzini@...hat.com
Subject: Re: [PATCH v9 03/24] virt: sev-guest: Make payload a variable length
 array

On 5/30/24 23:30, Nikunj A Dadhania wrote:
> Currently, guest message is PAGE_SIZE bytes and payload is hard-coded to
> 4000 bytes, assuming snp_guest_msg_hdr structure as 96 bytes.
> 
> Remove the structure size assumption and hard-coding of payload size and
> instead use variable length array.
> 
> While at it, rename the local guest message variables for clarity.
> 
> Signed-off-by: Nikunj A Dadhania <nikunj@....com>
> Suggested-by: Tom Lendacky <thomas.lendacky@....com>

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

> ---
>  drivers/virt/coco/sev-guest/sev-guest.h |  5 +-
>  drivers/virt/coco/sev-guest/sev-guest.c | 74 +++++++++++++++----------
>  2 files changed, 48 insertions(+), 31 deletions(-)
>