linux-kernel - Re: [PATCH fixes] riscv: mm: Do not call pmd dtor on vmemmap page table teardown

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Message-Id: 
 <173395638049.1729195.5190256802330820237.git-patchwork-notify@kernel.org>
Date: Wed, 11 Dec 2024 22:33:00 +0000
From: patchwork-bot+linux-riscv@...nel.org
To: Björn Töpel <bjorn@...nel.org>@codeaurora.org
Cc: linux-riscv@...ts.infradead.org, alexghiti@...osinc.com,
 aou@...s.berkeley.edu, david@...hat.com, palmer@...belt.com,
 paul.walmsley@...ive.com, osalvador@...e.de, bjorn@...osinc.com,
 abrestic@...osinc.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
 virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH fixes] riscv: mm: Do not call pmd dtor on vmemmap page table
 teardown

Hello:

This patch was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <palmer@...osinc.com>:

On Wed, 20 Nov 2024 14:12:02 +0100 you wrote:
> From: Björn Töpel <bjorn@...osinc.com>
> 
> The vmemmap's, which is used for RV64 with SPARSEMEM_VMEMMAP, page
> tables are populated using pmd (page middle directory) hugetables.
> However, the pmd allocation is not using the generic mechanism used by
> the VMA code (e.g. pmd_alloc()), or the RISC-V specific
> create_pgd_mapping()/alloc_pmd_late(). Instead, the vmemmap page table
> code allocates a page, and calls vmemmap_set_pmd(). This results in
> that the pmd ctor is *not* called, nor would it make sense to do so.
> 
> [...]

Here is the summary with links:
  - [fixes] riscv: mm: Do not call pmd dtor on vmemmap page table teardown
    https://git.kernel.org/riscv/c/21f1b85c8912

You are awesome, thank you!
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