[PATCH] iommu/exynos: add support for reserved regions

Will Deacon will at kernel.org
Mon Jul 14 04:54:31 PDT 2025


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

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