linux-kernel - Re: [PATCH] riscv: Fix kfence now that the linear mapping can be backed by PUD/P4D/PGD

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Date:   Thu, 08 Jun 2023 14:10:21 +0000
From:   patchwork-bot+linux-riscv@...nel.org
To:     Alexandre Ghiti <alexghiti@...osinc.com>
Cc:     linux-riscv@...ts.infradead.org, glider@...gle.com,
        elver@...gle.com, dvyukov@...gle.com, paul.walmsley@...ive.com,
        palmer@...belt.com, aou@...s.berkeley.edu, robh@...nel.org,
        anup@...infault.org, ajones@...tanamicro.com,
        kasan-dev@...glegroups.com, linux-kernel@...r.kernel.org,
        syzbot+a74d57bddabbedd75135@...kaller.appspotmail.com
Subject: Re: [PATCH] riscv: Fix kfence now that the linear mapping can be backed
 by PUD/P4D/PGD

Hello:

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

On Tue,  6 Jun 2023 15:04:44 +0200 you wrote:
> RISC-V Kfence implementation used to rely on the fact the linear mapping
> was backed by at most PMD hugepages, which is not true anymore since
> commit 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear
> mapping").
> 
> Instead of splitting PUD/P4D/PGD mappings afterwards, directly map the
> kfence pool region using PTE mappings by allocating this region before
> setup_vm_final().
> 
> [...]

Here is the summary with links:
  - riscv: Fix kfence now that the linear mapping can be backed by PUD/P4D/PGD
    https://git.kernel.org/riscv/c/25abe0db9243

You are awesome, thank you!
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