Re: [PATCH] mm/memremap: avoid calling kasan_remove_zero_shadow() for device private memory

[Muchun Song]

On Wed, Jan 26, 2022 at 5:27 PM Miaohe Lin <linmiaohe@xxxxxxxxxx> wrote:
>
> For device private memory, we do not create a linear mapping for the memory
> because the device memory is un-accessible. Thus we do not add kasan zero
> shadow for it. So it's unnecessary to do kasan_remove_zero_shadow() for it.
>
> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>

Good catch.

Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>