Re: [PATCH v3 0/5] Support the FEAT_HDBSS introduced in Armv9.5

[Will Deacon]

On Wed, 25 Feb 2026 12:04:16 +0800, Tian Zheng wrote:
> This series of patches add support to the Hardware Dirty state tracking
> Structure(HDBSS) feature, which is introduced by the ARM architecture
> in the DDI0601(ID121123) version.
> 
> The HDBSS feature is an extension to the architecture that enhances
> tracking translation table descriptors' dirty state, identified as
> FEAT_HDBSS. This feature utilizes hardware assistance to achieve dirty
> page tracking, aiming to significantly reduce the overhead of scanning
> for dirty pages.
> 
> [...]

Applied sysreg definitions to arm64 (for-next/sysregs), thanks!

[1/5] arm64/sysreg: Add HDBSS related register information
      https://git.kernel.org/arm64/c/72f7be0c2e30

Cheers,
-- 
Will

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