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

Catalin Marinas
2026-04-09T18:39:32Z

On Thu, Apr 09, 2026 at 07:35:02PM +0100, Catalin Marinas wrote:
> 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
> https://git.kernel.org/arm64/c/306736fd5155

b4 ty got confused with two emails for the same series, so only one went
out. The first patch is on for-next/misc:

[1/8] arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps
https://git.kernel.org/arm64/c/abed23c3c44f

--
Catalin