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

[Tian Zheng]

On 5/19/2026 11:23 PM, 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
> 
> Cheers,

Thanks!
Tian