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From: sashiko-bot@kernel.org
To: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
Cc: linux-s390@vger.kernel.org, "Vasily Gorbik" <gor@linux.ibm.com>,
	"Alexander Gordeev" <agordeev@linux.ibm.com>,
	"Christian Borntraeger" <borntraeger@linux.ibm.com>,
	"Heiko Carstens" <hca@linux.ibm.com>
Subject: Re: [PATCH v5 11/12] mm: userland pgtable freeing is RCU-safe now, remove leftover bits
Date: Fri, 25 Sep 2026 20:33:35 +0000	[thread overview]
Message-ID: <20260925203335.DB55A1F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20260925-rcu-pagetable-freeing-v5-11-31e91065fea4@kernel.org>

> Now every architecture has been converted to support
> CONFIG_MMU_GATHER_RCU_TABLE_FREE, this configuration option no longer makes
> any sense to keep around.
> 
> Therefore remove it, and remove all the dead code that existed for
> !CONFIG_MMU_GATHER_RCU_TABLE_FREE architectures previously.
> 
> Additionally, CONFIG_MMU_GATHER_TABLE_FREE is no longer necessary, as all
> architectures instead use CONFIG_HAVE_ARCH_TLB_REMOVE_TABLE when a custom
> __tlb_remove_table() is required, so remove this too.
> 
> A number of architectures only enabled CONFIG_MMU_GATHER_RCU_TABLE_FREE if
> CONFIG_MMU was set, however the mmu_gather logic only actually does
> something meaningful if CONFIG_MMU is set (mmu_gather.c is only compiled in
> this case, for instance).
> [ ... ]
> 
> Acked-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
> Reviewed-by: Lance Yang <lance.yang@linux.dev>
> Acked-by: David Hildenbrand (Arm) <david@kernel.org>
> Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260925-rcu-pagetable-freeing-v5-0-31e91065fea4@kernel.org?part=11


  reply	other threads:[~2026-09-25 20:33 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-25 20:09 [PATCH v5 00/12] mm: make userland page table freeing RCU-safe Lorenzo Stoakes (ARM)
2026-09-25 20:09 ` Lorenzo Stoakes (ARM)
2026-09-25 20:09 ` Lorenzo Stoakes (ARM)
2026-09-25 20:09 ` [PATCH v5 01/12] mm/khugepaged: deposit a newly allocated page table on collapse Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:25   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 02/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for most 2-level architectures Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:24   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 03/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for MMU riscv Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:19   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 04/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for MMU arm Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:23   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 05/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for arc, microblaze, xtensa Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:24   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 06/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for sparc64 Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:22   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 07/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for m68k-coldfire Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:21   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 08/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for sh-X2 Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:25   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 09/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for m68k-motorola Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:28   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 10/12] mm: enable MMU_GATHER_RCU_TABLE_FREE for sparc32 Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:29   ` sashiko-bot
2026-09-25 20:09 ` [PATCH v5 11/12] mm: userland pgtable freeing is RCU-safe now, remove leftover bits Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:33   ` sashiko-bot [this message]
2026-09-25 20:09 ` [PATCH v5 12/12] mm: change the contract for free_pgtables(), update docs Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:09   ` Lorenzo Stoakes (ARM)
2026-09-25 20:28   ` sashiko-bot
2026-09-28 12:06   ` David Hildenbrand (Arm)
2026-09-28 12:06     ` David Hildenbrand (Arm)
2026-09-28 12:06     ` David Hildenbrand (Arm)
2026-09-25 22:28 ` [PATCH v5 00/12] mm: make userland page table freeing RCU-safe Andrew Morton
2026-09-25 22:28   ` Andrew Morton
2026-09-25 22:28   ` Andrew Morton

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