From: Helge Deller <deller@gmx.de>
To: Qi Zheng <qi.zheng@linux.dev>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, linux-parisc@vger.kernel.org,
Qi Zheng <zhengqi.arch@bytedance.com>
Subject: Re: [PATCH v4 5/8] parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE
Date: Sat, 7 Feb 2026 03:34:20 +0100 [thread overview]
Message-ID: <7e31fe0b-c321-4f09-9d7a-19d22851129c@gmx.de> (raw)
In-Reply-To: <b827939046dbc94bc7c585cdbed8522baab75b15.1769515122.git.zhengqi.arch@bytedance.com>
On 1/27/26 13:12, Qi Zheng wrote:
> From: Qi Zheng <zhengqi.arch@bytedance.com>
>
> 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@bytedance.com>
> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
> Cc: Helge Deller <deller@gmx.de>
> ---
> arch/parisc/Kconfig | 1 +
> arch/parisc/include/asm/tlb.h | 4 ++--
> 2 files changed, 3 insertions(+), 2 deletions(-)
Acked-by: Helge Deller <deller@gmx.de> # parisc
Tested-by: Helge Deller <deller@gmx.de> # parisc
Thanks!
Helge
next prev parent reply other threads:[~2026-02-07 2:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-27 12:12 [PATCH v4 0/8] enable PT_RECLAIM on more 64-bit architectures Qi Zheng
2026-01-27 12:12 ` [PATCH v4 1/8] mm: change mm/pt_reclaim.c to use asm/tlb.h instead of asm-generic/tlb.h Qi Zheng
2026-01-27 12:12 ` [PATCH v4 2/8] alpha: mm: enable MMU_GATHER_RCU_TABLE_FREE Qi Zheng
2026-02-01 22:01 ` Magnus Lindholm
2026-01-27 12:12 ` [PATCH v4 3/8] LoongArch: " Qi Zheng
2026-01-27 12:12 ` [PATCH v4 4/8] mips: " Qi Zheng
2026-01-27 12:12 ` [PATCH v4 5/8] parisc: " Qi Zheng
2026-02-07 2:34 ` Helge Deller [this message]
2026-01-27 12:12 ` [PATCH v4 6/8] um: " Qi Zheng
2026-01-27 12:13 ` [PATCH v4 7/8] mm: convert __HAVE_ARCH_TLB_REMOVE_TABLE to CONFIG_HAVE_ARCH_TLB_REMOVE_TABLE config Qi Zheng
2026-02-06 11:06 ` David Hildenbrand (Arm)
2026-02-06 11:13 ` Qi Zheng
2026-02-06 11:45 ` David Hildenbrand (Arm)
2026-02-06 11:58 ` Qi Zheng
2026-02-06 12:59 ` David Hildenbrand (Arm)
2026-02-06 13:33 ` Andreas Larsson
2026-01-27 12:13 ` [PATCH v4 8/8] mm: make PT_RECLAIM depends on MMU_GATHER_RCU_TABLE_FREE Qi Zheng
2026-01-27 20:46 ` [PATCH v4 0/8] enable PT_RECLAIM on more 64-bit architectures Andrew Morton
2026-01-28 2:07 ` Qi Zheng
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