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

[Leonardo Bras]

On Tue, May 19, 2026 at 04:23:12PM +0100, Will Deacon wrote:
> 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
> 

Thanks!
Leo

> Cheers,
> -- 
> Will
> 
> https://fixes.arm64.dev
> https://next.arm64.dev
> https://will.arm64.dev