Re: [PATCH v6 08/11] arm64: mm: Avoid TLBI when marking pages as valid

[Gavin Shan]

On 10/5/24 12:43 AM, Steven Price wrote:
> When __change_memory_common() is purely setting the valid bit on a PTE
> (e.g. via the set_memory_valid() call) there is no need for a TLBI as
> either the entry isn't changing (the valid bit was already set) or the
> entry was invalid and so should not have been cached in the TLB.
>
> Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
> Signed-off-by: Steven Price <steven.price@xxxxxxx>
> ---
> v4: New patch
> ---
>   arch/arm64/mm/pageattr.c | 8 +++++++-
>   1 file changed, 7 insertions(+), 1 deletion(-)

Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>