Re: (subset) [PATCH 0/8] arm64: Implement support for 2025 dpISA extensions

Catalin Marinas
2026-04-09T18:36:30Z

On Mon, 02 Mar 2026 22:53:15 +0000, Mark Brown wrote:
> The 2025 dpISA extensions introduce a number of architecture features
> all of which are fairly straightforward from a kernel point of view
> since they only introduce new instructions, not any architecture state.
>
> All the relevant newly added ID registers are already exported by KVM,
> all non-RES0 bits in ID_AA64ZFR0_EL1 and ID_AA64FPFR0_EL1 are writable
> and the updates to ID_AA64ISARx_EL1 are all additional values in already
> exported bitfields.
>
> [...]

Applied to arm64 (for-next/sysreg), thanks! That's only the sysreg
definitions as these are stable. I also applied the KERNEL_HWCAP_*
generation on a different branch.

[2/8] arm64/sysreg: Update ID_AA64ISAR0_EL1 description to DDI0601 2025-12
https://git.kernel.org/arm64/c/b964aa8d68f7
[3/8] arm64/sysreg: Update ID_AA64ISAR2_EL1 description to DDI0601 2025-12
https://git.kernel.org/arm64/c/bb5e1e540501
[4/8] arm64/sysreg: Update ID_AA64FPFR0_EL1 description to DDI0601 2025-12
https://git.kernel.org/arm64/c/d74576b51ba6
[5/8] arm64/sysreg: Update ID_AA64ZFR0_EL1 description to DDI0601 2025-12
https://git.kernel.org/arm64/c/bf56250f34a4
[6/8] arm64/sysreg: Update ID_AA64SMFR0_EL1 description to DDI0601 2025-12