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From: Greg KH <gregkh@linuxfoundation.org>
To: He Lugang <helugang@uniontech.com>
Cc: stable@vger.kernel.org, Huacai Chen <chenhuacai@loongson.cn>
Subject: Re: [PATCH 6.6.y RESEND 2/2] LoongArch: Use accessors to page table entries instead of direct dereference
Date: Fri, 13 Sep 2024 16:27:54 +0200	[thread overview]
Message-ID: <2024091339-untangled-tracing-d859@gregkh> (raw)
In-Reply-To: <1197B2966A66F7F9+20240910131119.18625-2-helugang@uniontech.com>

On Tue, Sep 10, 2024 at 09:11:19PM +0800, He Lugang wrote:
> From: Huacai Chen <chenhuacai@loongson.cn>
> 
> commit 4574815abf43e2bf05643e1b3f7a2e5d6df894f0 upstream
> 
> As very well explained in commit 20a004e7b017cce282 ("arm64: mm: Use
> READ_ONCE/WRITE_ONCE when accessing page tables"), an architecture whose
> page table walker can modify the PTE in parallel must use READ_ONCE()/
> WRITE_ONCE() macro to avoid any compiler transformation.
> 
> So apply that to LoongArch which is such an architecture, in order to
> avoid potential problems.
> 
> Similar to commit edf955647269422e ("riscv: Use accessors to page table
> entries instead of direct dereference").
> 
> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

You did not sign off on this, so I'm dropping it :(


      reply	other threads:[~2024-09-13 14:27 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-10  8:55 FAILED: patch "[PATCH] LoongArch: Use accessors to page table entries instead of" failed to apply to 6.6-stable tree gregkh
2024-09-10 13:01 ` [PATCH 6.6.y 1/2] LoongArch: KVM: Implement kvm mmu operations He Lugang
     [not found] ` <20240910130104.17323-1-helugang@uniontech.com>
2024-09-10 13:01   ` [PATCH 6.6.y 2/2] LoongArch: Use accessors to page table entries instead of direct dereference He Lugang
2024-09-10 13:11 ` [PATCH 6.6.y RESEND 1/2] LoongArch: KVM: Implement kvm mmu operations He Lugang
     [not found] ` <20240910131119.18625-1-helugang@uniontech.com>
2024-09-10 13:11   ` [PATCH 6.6.y RESEND 2/2] LoongArch: Use accessors to page table entries instead of direct dereference He Lugang
2024-09-13 14:27     ` Greg KH [this message]

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