Re: [PATCH v4 5/8] parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE

[Helge Deller]

On 1/27/26 13:12, Qi Zheng wrote:
> From: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
>
> On a 64-bit system, madvise(MADV_DONTNEED) may cause a large number of
> empty PTE page table pages (such as 100GB+). To resolve this problem,
> first enable MMU_GATHER_RCU_TABLE_FREE to prepare for enabling the
> PT_RECLAIM feature, which resolves this problem.
>
> Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
> Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
> Cc: Helge Deller <deller@xxxxxx>
> ---
>   arch/parisc/Kconfig           | 1 +
>   arch/parisc/include/asm/tlb.h | 4 ++--
>   2 files changed, 3 insertions(+), 2 deletions(-)

Acked-by: Helge Deller <deller@xxxxxx>   # parisc
Tested-by: Helge Deller <deller@xxxxxx>  # parisc

Thanks!
Helge