From: patchwork-bot+netdevbpf@kernel.org
To: Tejun Heo <tj@kernel.org>
Cc: catalin.marinas@arm.com, will@kernel.org, ast@kernel.org,
david@kernel.org, arighi@nvidia.com, memxor@gmail.com,
akpm@linux-foundation.org, rppt@kernel.org, andrii@kernel.org,
daniel@iogearbox.net, martin.lau@linux.dev, eddyz87@gmail.com,
yonghong.song@linux.dev, emil@etsalapatis.com,
void@manifault.com, changwoo@igalia.com,
linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
bpf@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 bpf-next] arm64: mm: Complete the PTE store in ptep_try_set()
Date: Mon, 08 Jun 2026 12:00:11 +0000 [thread overview]
Message-ID: <178092001114.1007295.14338085080112012433.git-patchwork-notify@kernel.org> (raw)
In-Reply-To: <7f5f7c94601312c1a401fb18998291cc@kernel.org>
Hello:
This patch was applied to bpf/bpf-next.git (master)
by Kumar Kartikeya Dwivedi <memxor@gmail.com>:
On Sun, 07 Jun 2026 21:25:47 -1000 you wrote:
> ptep_try_set() installs a kernel PTE with try_cmpxchg() but, unlike
> __set_pte(), skips the barriers that arm64 requires after writing a valid
> kernel PTE. Without them a subsequent access can fault instead of seeing
> the new mapping.
>
> Issue them with emit_pte_barriers() rather than __set_pte_complete().
> ptep_try_set() must finish the store before it returns, but
> __set_pte_complete() would defer the barriers when the calling context is in
> lazy MMU mode.
>
> [...]
Here is the summary with links:
- [v2,bpf-next] arm64: mm: Complete the PTE store in ptep_try_set()
https://git.kernel.org/bpf/bpf-next/c/71385b78dbc2
You are awesome, thank you!
--
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next prev parent reply other threads:[~2026-06-08 12:00 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-01 18:37 [PATCH bpf-next] bpf: Replace scratch PTE atomically when allocating arena pages Tejun Heo
2026-06-01 20:15 ` bot+bpf-ci
2026-06-02 22:09 ` Tejun Heo
2026-06-06 16:06 ` Catalin Marinas
2026-06-07 7:59 ` [PATCH bpf-next] arm64: mm: Complete the PTE store in ptep_try_set() Tejun Heo
2026-06-07 8:38 ` bot+bpf-ci
2026-06-07 20:04 ` Tejun Heo
2026-06-07 20:31 ` Catalin Marinas
2026-06-08 7:25 ` [PATCH v2 " Tejun Heo
2026-06-08 8:43 ` Catalin Marinas
2026-06-08 12:00 ` patchwork-bot+netdevbpf [this message]
2026-06-02 22:29 ` [PATCH bpf-next] bpf: Replace scratch PTE atomically when allocating arena pages Kumar Kartikeya Dwivedi
2026-06-05 15:30 ` patchwork-bot+netdevbpf
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