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

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Date:   Mon,  5 Jun 2023 18:46:02 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        Kristina Martsenko <kristina.martsenko@....com>
Cc:     Will Deacon <will@...nel.org>, Marc Zyngier <maz@...nel.org>,
        Oliver Upton <oliver.upton@...ux.dev>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Mark Rutland <mark.rutland@....com>,
        Mark Brown <broonie@...nel.org>,
        Luis Machado <luis.machado@....com>,
        Vladimir Murzin <vladimir.murzin@....com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 00/11] arm64: Support for Armv8.8 memcpy instructions in userspace

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