linux-kernel - Re: [PATCH v2 0/8] irqchip: mips-gic: Cleanups, fixes, prep for multi-cluster

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <86efpi3lgj.fsf@arm.com>
Date:   Wed, 01 Nov 2017 00:13:16 +0000
From:   Marc Zyngier <marc.zyngier@....com>
To:     Paul Burton <paul.burton@...s.com>
Cc:     Jason Cooper <jason@...edaemon.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        <linux-mips@...ux-mips.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/8] irqchip: mips-gic: Cleanups, fixes, prep for multi-cluster

On Tue, Oct 31 2017 at  9:41:43 am GMT, Paul Burton <paul.burton@...s.com> wrote:
> This series continues cleaning & fixing up the MIPS GIC irqchip driver
> whilst laying groundwork to support multi-cluster systems.
>
> Patch 1 refactors in order to reduce some duplication and prepare us for
> the following patches.
>
> Patches 2-4 move per-CPU GIC configuration away from being performed all
> at once when the driver is probed or when interrupts are masked &
> unmasked, instead performing configuration as CPUs are brought online.
> This allows us to support reconfiguring after clusters are powered down
> & back up, generally cleans up and fixes bugs in the process.
>
> Patch 5 makes use of num_possible_cpus() to reserve IPIs, rather than
> the gic_vpes variable. This prepares us for multi-cluster in which
> gic_vpes is mostly meaningless since it only reflects the local cluster,
> and it generally makes more sense to use the more standard
> num_possible_cpus().
>
> Patch 6 removes the now unused gic_vpes variable.
>
> Patch 7 is a general clean up but also prepares us for later patches as
> described in its commit message.
>
> Patch 8 is a general clean up marking some variables static.
>
> This series by itself continues along the path towards supporting
> multi-cluster systems such as the MIPS I6500, but does not yet get us
> the whole way there. If you wish to see my current work in progress
> which builds out multi-cluster support atop these patches then that can
> be found in the multicluster branch of:
>
>   git://git.linux-mips.org/pub/scm/paul/linux.git
>
> Or browsed at:
>
>   https://git.linux-mips.org/cgit/paul/linux.git/log/?h=multicluster
>
> This series applies cleanly atop v4.14-rc7.

Are those targeting 4.14 or 4.15? It is getting quite late for the
former, and it doesn't seem to cleanly apply on tip/irq/core (or my
irqchip-4.15 branch) if that's for the latter (patch 6 shouts at me).

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny.