From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/5] arm64: Patching branches for fun and profit
Date: Thu, 26 Mar 2015 22:04:52 +0000 [thread overview]
Message-ID: <20150326220452.GB23836@arm.com> (raw)
In-Reply-To: <1426773576-14062-1-git-send-email-marc.zyngier@arm.com>
On Thu, Mar 19, 2015 at 01:59:31PM +0000, Marc Zyngier wrote:
> The current alternative instruction framework is not kind to branches,
> potentially leading to all kind of hacks in the code that uses
> alternatives. This series expands it to deal with immediate branches
> (for a start), and applies it to the VGIC world switch.
>
> Patch #1 adds the required infrastructure to extract the immediate
> from an instruction.
>
> Patch #2 allows the use of an immediate b or bl instruction as an
> alternative, computing the target branch as the instruction is being
> patched in.
>
> Patch #3 defines a feature framework that works exactly like the CPU
> errata infrastructure (and shares a lot with it).
>
> Patch #4 adds detection of the system register GICv3 CPU interface.
>
> Patch #5 enables dynamic patching of the KVM code.
>
> This has been tested with GICv3 on a FastModel.
Modulo my one minor comment:
Acked-by: Will Deacon <will.deacon@arm.com>
for the series.
Will
prev parent reply other threads:[~2015-03-26 22:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-19 13:59 [PATCH 0/5] arm64: Patching branches for fun and profit Marc Zyngier
2015-03-19 13:59 ` [PATCH 1/5] arm64: insn: Add aarch64_insn_decode_immediate Marc Zyngier
2015-03-19 13:59 ` [PATCH 2/5] arm64: alternative: Allow immediate branch as alternative instruction Marc Zyngier
2015-03-26 22:03 ` Will Deacon
2015-03-26 22:19 ` Marc Zyngier
2015-03-26 22:31 ` Will Deacon
2015-03-27 10:42 ` Jon Medhurst (Tixy)
2015-03-27 11:08 ` Marc Zyngier
2015-03-19 13:59 ` [PATCH 3/5] arm64: Extract feature parsing code from cpu_errata.c Marc Zyngier
2015-03-19 13:59 ` [PATCH 4/5] arm64: alternative: Introduce feature for GICv3 CPU interface Marc Zyngier
2015-03-19 13:59 ` [PATCH 5/5] arm64: KVM: Switch vgic save/restore to alternative_insn Marc Zyngier
2015-03-26 22:04 ` Will Deacon [this message]
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