linux-kernel - Re: [PATCH v2 3/6] mm: pgtable: convert some architectures to use tlb_remove

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Message-ID: <3f6c1872-cec8-4a7a-ac18-f5a426962a11@arm.com>
Date: Wed, 26 Feb 2025 09:31:59 +0100
From: Kevin Brodsky <kevin.brodsky@....com>
To: Qi Zheng <zhengqi.arch@...edance.com>, peterz@...radead.org,
 riel@...riel.com, vishal.moola@...il.com, david@...hat.com,
 jannh@...gle.com, hughd@...gle.com, willy@...radead.org, yuzhao@...gle.com,
 muchun.song@...ux.dev, akpm@...ux-foundation.org, will@...nel.org,
 aneesh.kumar@...nel.org, npiggin@...il.com, arnd@...db.de,
 dave.hansen@...ux.intel.com, rppt@...nel.org, alexghiti@...osinc.com
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 linux-csky@...r.kernel.org, linux-hexagon@...r.kernel.org,
 loongarch@...ts.linux.dev, linux-m68k@...ts.linux-m68k.org,
 linux-mips@...r.kernel.org, linux-openrisc@...r.kernel.org,
 linux-sh@...r.kernel.org, linux-um@...ts.infradead.org, x86@...nel.org,
 linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v2 3/6] mm: pgtable: convert some architectures to use
 tlb_remove_ptdesc()

On 25/02/2025 04:45, Qi Zheng wrote:
> Now, the nine architectures of csky, hexagon, loongarch, m68k, mips,
> nios2, openrisc, sh and um do not select CONFIG_MMU_GATHER_RCU_TABLE_FREE,
> and just call pagetable_dtor() + tlb_remove_page_ptdesc() (the wrapper of
> tlb_remove_page()). This is the same as the implementation of
> tlb_remove_{ptdesc|table}() under !CONFIG_MMU_GATHER_TABLE_FREE, so
> convert these architectures to use tlb_remove_ptdesc().
>
> The ultimate goal is to make the architecture only use tlb_remove_ptdesc()
> or tlb_remove_table() for page table pages.
>
> Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>
> Suggested-by: Peter Zijlstra (Intel) <peterz@...radead.org>

Reviewed-by: Kevin Brodsky <kevin.brodsky@....com>