Re: [PATCH v5] arm64: errata: work around NVIDIA Olympus device store/load ordering
From: Will Deacon
Date: Wed Jul 22 2026 - 17:43:12 EST
On Wed, 15 Jul 2026 15:48:56 -0500, Shanker Donthineni wrote:
> On systems with NVIDIA Olympus cores, a Device-nGnR* load can be
> observed by a peripheral before an older, non-overlapping Device-nGnR*
> store to the same peripheral. This breaks the program-order guarantee
> that software expects for Device-nGnR* accesses and can leave a
> peripheral in an incorrect state.
>
> The erratum can occur only when all of the following apply:
>
> [...]
Applied to arm64 (for-next/errata), thanks!
[1/1] arm64: errata: work around NVIDIA Olympus device store/load ordering
https://git.kernel.org/arm64/c/12aab25ca56e
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev