Re: [PATCH v2 00/11] arm64: Support for Armv8.8 memcpy instructions in userspace

Catalin Marinas
2023-06-05T17:46:13Z

On Tue, 09 May 2023 15:22:24 +0100, Kristina Martsenko wrote:
> The Armv8.8 extension adds new instructions to perform memcpy(), memset() and
> memmove() operations in hardware (FEAT_MOPS). This series adds support for
> using the new instructions in userspace. More information can be found in the
> cover letter for v1:
> https://lore.kernel.org/linux-arm-kernel/20230216160012.272345-1-kristina.martsenko@arm.com/
>
> Changes in v2:
> - Removed booting.rst requirement for HCRX_EL2.MCE2
> - Changed HCRX_EL2 cpucap to be STRICT_BOOT type
> - Changed HCRX_EL2.SMPME to be set for the guest and unset for the host
> - Moved HCRX_EL2 initialization into init_el2_state(), dropped ISB
> - Simplified conditional checks in mops exception handler with XOR
> - Added comments from Arm ARM into mops exception handler
> - Converted cpucaps to use the new ARM64_CPUID_FIELDS() helper
> - Added MOPS to hwcaps kselftest
> - Improved commit messages
> - Rebased onto v6.4-rc1
> - v1: https://lore.kernel.org/linux-arm-kernel/20230216160012.272345-1-kristina.martsenko@arm.com/
>
> [...]

Applied to arm64 (for-next/feat_mops), thanks!

[01/11] KVM: arm64: initialize HCRX_EL2
https://git.kernel.org/arm64/c/af94aad4c915
[02/11] arm64: cpufeature: detect FEAT_HCX
https://git.kernel.org/arm64/c/b0c756fe996a
[03/11] KVM: arm64: switch HCRX_EL2 between host and guest
https://git.kernel.org/arm64/c/306b4c9f7120
[04/11] arm64: mops: document boot requirements for MOPS
https://git.kernel.org/arm64/c/f32c053b9806
[05/11] arm64: mops: don't disable host MOPS instructions from EL2
https://git.kernel.org/arm64/c/b1319c0e9559
[06/11] KVM: arm64: hide MOPS from guests
https://git.kernel.org/arm64/c/3172613fbcbb
[07/11] arm64: mops: handle MOPS exceptions
https://git.kernel.org/arm64/c/8536ceaa7471
[08/11] arm64: mops: handle single stepping after MOPS exception
https://git.kernel.org/arm64/c/8cd076a67dc8
[09/11] arm64: mops: detect and enable FEAT_MOPS
https://git.kernel.org/arm64/c/b7564127ffcb
[10/11] arm64: mops: allow disabling MOPS from the kernel command line
https://git.kernel.org/arm64/c/3e1dedb29d0f
[11/11] kselftest/arm64: add MOPS to hwcap test
https://git.kernel.org/arm64/c/d8a324f102cc

--
Catalin