linux-kernel - Re: [PATCH v2 00/17] arm64 SSBD (aka Spectre-v4) mitigation

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Message-ID: <20180531164133.6z6py7nl55ty473e@armageddon.cambridge.arm.com>
Date:   Thu, 31 May 2018 17:41:34 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Marc Zyngier <marc.zyngier@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kvmarm@...ts.cs.columbia.edu, Mark Rutland <mark.rutland@....com>,
        Kees Cook <keescook@...omium.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Will Deacon <will.deacon@....com>,
        Christoffer Dall <christoffer.dall@....com>,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        Julien Grall <julien.grall@....com>,
        Andy Lutomirski <luto@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v2 00/17] arm64 SSBD (aka Spectre-v4) mitigation

On Tue, May 29, 2018 at 01:11:04PM +0100, Marc Zyngier wrote:
> Marc Zyngier (17):
>   arm/arm64: smccc: Add SMCCC-specific return codes
>   arm64: Call ARCH_WORKAROUND_2 on transitions between EL0 and EL1
>   arm64: Add per-cpu infrastructure to call ARCH_WORKAROUND_2
>   arm64: Add ARCH_WORKAROUND_2 probing
>   arm64: Add 'ssbd' command-line option
>   arm64: ssbd: Add global mitigation state accessor
>   arm64: ssbd: Skip apply_ssbd if not using dynamic mitigation
>   arm64: ssbd: Restore mitigation status on CPU resume
>   arm64: ssbd: Introduce thread flag to control userspace mitigation
>   arm64: ssbd: Add prctl interface for per-thread mitigation
>   arm64: KVM: Add HYP per-cpu accessors
>   arm64: KVM: Add ARCH_WORKAROUND_2 support for guests
>   arm64: KVM: Handle guest's ARCH_WORKAROUND_2 requests
>   arm64: KVM: Add ARCH_WORKAROUND_2 discovery through
>     ARCH_FEATURES_FUNC_ID

I queued the 14 patches above for 4.18.

>   arm64: Add test_and_clear_flag and set_flag atomic assembler
>     primitives
>   arm64: ssbd: Enable delayed setting of TIF_SSBD
>   arm64: ssbd: Implement arch_seccomp_spec_mitigate

Thanks.

-- 
Catalin