linux-kernel - Re: [PATCH] iommu/io-pgtable-arm: Fix cfg reading in arm_lpae_concat

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Message-Id: <173462288874.3912129.4288094387004225028.b4-ty@kernel.org>
Date: Thu, 19 Dec 2024 19:47:13 +0000
From: Will Deacon <will@...nel.org>
To: linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	Mostafa Saleh <smostafa@...gle.com>
Cc: catalin.marinas@....com,
	kernel-team@...roid.com,
	Will Deacon <will@...nel.org>,
	robin.murphy@....com,
	joro@...tes.org
Subject: Re: [PATCH] iommu/io-pgtable-arm: Fix cfg reading in arm_lpae_concat_mandatory()

On Sun, 15 Dec 2024 20:04:11 +0000, Mostafa Saleh wrote:
> I messed up the newly introduced function arm_lpae_concat_mandatory()
> where ias/oas are read from the io_pgtable_cfg copy in arm_lpae_io_pgtable.
> 
> However, this copy is set later in alloc_io_pgtable_ops() after alloc()
> function was called.
> 
> I didn’t catch that with my selftesting as arm_lpae_io_pgtable is
> allocated from kmalloc, which was caching old configs.
> 
> [...]

Applied to will (for-joerg/arm-smmu/updates), thanks!

[1/1] iommu/io-pgtable-arm: Fix cfg reading in arm_lpae_concat_mandatory()
      https://git.kernel.org/will/c/b7b8a6305557

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev