linux-kernel - Re: [RFC 1/2] efi/memattr: Use desc_size instead of total size to check for corruption

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Message-ID: <029cff22-f2e0-4796-9c27-1df056e08f8f@gmail.com>
Date: Mon, 20 Jan 2025 10:50:36 +0000
From: Usama Arif <usamaarif642@...il.com>
To: Ard Biesheuvel <ardb@...nel.org>
Cc: linux-efi@...r.kernel.org, devel@...2.groups.io,
 kexec@...ts.infradead.org, hannes@...xchg.org, x86@...nel.org,
 linux-kernel@...r.kernel.org, leitao@...ian.org, gourry@...rry.net,
 kernel-team@...a.com, Dave Young <dyoung@...hat.com>
Subject: Re: [RFC 1/2] efi/memattr: Use desc_size instead of total size to
 check for corruption



On 20/01/2025 10:32, Ard Biesheuvel wrote:
> On Mon, 20 Jan 2025 at 11:27, Usama Arif <usamaarif642@...il.com> wrote:
>>
>>
> ...
>> Hi Ard,
>>
>> Just wanted to check how should we proceed forward? Should we try and fix the warning
>> and corruption during kexec as done in this series or not initialize memory attributes
>> table at all in kexec boot? I would prefer fixing the issues as in this series.
>>
> 
> I would prefer kexec boot on x86 to disregard the memory attributes
> table entirely.

Would you like Dave to send something like
https://lore.kernel.org/all/CALu+AoS8tb=HgaybDw5OG4A1QbOXHvuidpu0ynmz-nE1nBqzTA@mail.gmail.com/
on the mailing list (wrapped in ifdef CONFIG_X86_64)

or we could do
https://lore.kernel.org/all/fd63613c-fd26-42de-b5ed-cc734f72eb36@gmail.com/
as well.

Or if there is any other way you prefer, I am happy to implement and test.

Thanks,
Usama