Re: [PATCH 3/3] /dev/mem: Do not map unaccepted memory

From: Dave Hansen
Date: Thu Sep 07 2023 - 11:33:29 EST


On 9/6/23 00:39, Adrian Hunter wrote:
> Support for unaccepted memory was added recently, refer commit
> dcdfdd40fa82 ("mm: Add support for unaccepted memory"), whereby
> a virtual machine may need to accept memory before it can be used.
>
> Do not map unaccepted memory because it can cause the guest to fail.

Doesn't /dev/mem already provide a billion ways for someone to shoot
themselves in the foot? TDX seems to have added the 1,000,000,001st.
Is this really worth patching?