linux-kernel - Re: [PATCH] riscv: Sync efi page table's kernel mappings before switching

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Message-Id: <166968301500.7047.6174959001069239033.git-patchwork-notify@kernel.org>
Date:   Tue, 29 Nov 2022 00:50:15 +0000
From:   patchwork-bot+linux-riscv@...nel.org
To:     Alexandre Ghiti <alexghiti@...osinc.com>
Cc:     linux-riscv@...ts.infradead.org, ardb@...nel.org,
        paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, heinrich.schuchardt@...onical.com,
        emil.renner.berthing@...onical.com, linux-efi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] riscv: Sync efi page table's kernel mappings before switching

Hello:

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

On Mon, 21 Nov 2022 14:33:03 +0100 you wrote:
> The EFI page table is initially created as a copy of the kernel page table.
> With VMAP_STACK enabled, kernel stacks are allocated in the vmalloc area:
> if the stack is allocated in a new PGD (one that was not present at the
> moment of the efi page table creation or not synced in a previous vmalloc
> fault), the kernel will take a trap when switching to the efi page table
> when the vmalloc kernel stack is accessed, resulting in a kernel panic.
> 
> [...]

Here is the summary with links:
  - riscv: Sync efi page table's kernel mappings before switching
    https://git.kernel.org/riscv/c/3f105a742725

You are awesome, thank you!
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