linux-kernel - Re: [PATCH] iommu/exynos: add support for reserved regions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <175249276902.1459797.13570182845894865373.b4-ty@kernel.org>
Date: Mon, 14 Jul 2025 12:54:31 +0100
From: Will Deacon <will@...nel.org>
To: Marek Szyprowski <m.szyprowski@...sung.com>,
	Joerg Roedel <joro@...tes.org>,
	Robin Murphy <robin.murphy@....com>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Kaustabh Chakraborty <kauschluss@...root.org>
Cc: catalin.marinas@....com,
	kernel-team@...roid.com,
	Will Deacon <will@...nel.org>,
	iommu@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu/exynos: add support for reserved regions

On Sat, 12 Jul 2025 17:19:30 +0530, Kaustabh Chakraborty wrote:
> The bootloader configures a reserved memory region for framebuffer,
> which is protected by the IOMMU. The kernel-side driver is oblivious as
> of which memory region is set up by the bootloader. In such case, the
> IOMMU tries to reference the reserved region - which is not reserved in
> the kernel anymore - and it results in an unrecoverable page fault. More
> information about it is provided in [1].
> 
> [...]

Applied to iommu (samsung/exynos), thanks!

[1/1] iommu/exynos: add support for reserved regions
      https://git.kernel.org/iommu/c/2d70fdd9b5c9

Cheers,
-- 
Will

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