From: Will Deacon <will.deacon@arm.com>
To: Marc Zyngier <marc.zyngier@arm.com>
Cc: Andre Przywara <Andre.Przywara@arm.com>,
Dave P Martin <Dave.Martin@arm.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Catalin Marinas <Catalin.Marinas@arm.com>,
"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>
Subject: Re: [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
WARNING: multiple messages have this Message-ID (diff)
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
next prev parent reply other threads:[~2015-03-26 21:57 UTC|newest]
Thread overview: 24+ 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 ` Marc Zyngier
2015-03-19 13:59 ` [PATCH 1/5] arm64: insn: Add aarch64_insn_decode_immediate Marc Zyngier
2015-03-19 13:59 ` Marc Zyngier
2015-03-19 13:59 ` [PATCH 2/5] arm64: alternative: Allow immediate branch as alternative instruction Marc Zyngier
2015-03-19 13:59 ` Marc Zyngier
2015-03-26 22:03 ` Will Deacon
2015-03-26 22:03 ` Will Deacon
2015-03-26 22:19 ` Marc Zyngier
2015-03-26 22:19 ` Marc Zyngier
2015-03-26 22:31 ` Will Deacon
2015-03-26 22:31 ` Will Deacon
2015-03-27 10:42 ` Jon Medhurst (Tixy)
2015-03-27 10:42 ` Jon Medhurst (Tixy)
2015-03-27 11:08 ` Marc Zyngier
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 ` 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 ` Marc Zyngier
2015-03-19 13:59 ` [PATCH 5/5] arm64: KVM: Switch vgic save/restore to alternative_insn Marc Zyngier
2015-03-19 13:59 ` Marc Zyngier
2015-03-26 22:04 ` Will Deacon [this message]
2015-03-26 22:04 ` [PATCH 0/5] arm64: Patching branches for fun and profit Will Deacon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150326220452.GB23836@arm.com \
--to=will.deacon@arm.com \
--cc=Andre.Przywara@arm.com \
--cc=Catalin.Marinas@arm.com \
--cc=Dave.Martin@arm.com \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=marc.zyngier@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.