linux-kernel - Re: [PATCH v2 0/2] riscv: Enable percpu page first chunk allocator

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Date: Sat, 20 Jan 2024 21:09:50 +0000
From: patchwork-bot+linux-riscv@...nel.org
To: Alexandre Ghiti <alexghiti@...osinc.com>
Cc: linux-riscv@...ts.infradead.org, paul.walmsley@...ive.com,
 palmer@...belt.com, aou@...s.berkeley.edu, ryabinin.a.a@...il.com,
 glider@...gle.com, andreyknvl@...il.com, dvyukov@...gle.com,
 vincenzo.frascino@....com, arnd@...db.de, dennis@...nel.org, tj@...nel.org,
 cl@...ux.com, akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
 kasan-dev@...glegroups.com, linux-arch@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v2 0/2] riscv: Enable percpu page first chunk allocator

Hello:

This series was applied to riscv/linux.git (fixes)
by Dennis Zhou <dennis@...nel.org>:

On Tue, 12 Dec 2023 22:34:55 +0100 you wrote:
> While working with pcpu variables, I noticed that riscv did not support
> first chunk allocation in the vmalloc area which may be needed as a fallback
> in case of a sparse NUMA configuration.
> 
> patch 1 starts by introducing a new function flush_cache_vmap_early() which
> is needed since a new vmalloc mapping is established and directly accessed:
> on riscv, this would likely fail in case of a reordered access or if the
> uarch caches invalid entries in TLB.
> Note that most architectures do not include asm-generic/cacheflush.h so to
> avoid build failures, this patch implements the new function on each of
> those architectures. For all architectures except riscv, this new function
> is implemented as a no-op to keep the existing behaviour but it likely
> needs another implementation.
> 
> [...]

Here is the summary with links:
  - [v2,1/2] mm: Introduce flush_cache_vmap_early()
    https://git.kernel.org/riscv/c/7a92fc8b4d20
  - [v2,2/2] riscv: Enable pcpu page first chunk allocator
    https://git.kernel.org/riscv/c/6b9f29b81b15

You are awesome, thank you!
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