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From: Christoffer Dall <christoffer.dall@linaro.org>
To: Marc Zyngier <marc.zyngier@arm.com>
Cc: "Jon Medhurst (Tixy)" <tixy@linaro.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Dave Martin <dave.martin@arm.com>,
	Andre Przywara <andre.przywara@arm.com>,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v3 5/5] arm64: KVM: Switch vgic save/restore to alternative_insn
Date: Thu, 14 May 2015 13:53:55 +0200	[thread overview]
Message-ID: <20150514115355.GT32765@cbox> (raw)
In-Reply-To: <1427461765-14462-6-git-send-email-marc.zyngier@arm.com>

On Fri, Mar 27, 2015 at 01:09:25PM +0000, Marc Zyngier wrote:
> So far, we configured the world-switch by having a small array
> of pointers to the save and restore functions, depending on the
> GIC used on the platform.
> 
> Loading these values each time is a bit silly (they never change),
> and it makes sense to rely on the instruction patching instead.
> 
> This leads to a nice cleanup of the code.
> 
> Acked-by: Will Deacon <will.deacon@arm.com>
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

I gave this a quick spin on Juno as well and works as expected:

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>

WARNING: multiple messages have this Message-ID (diff)
From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 5/5] arm64: KVM: Switch vgic save/restore to alternative_insn
Date: Thu, 14 May 2015 13:53:55 +0200	[thread overview]
Message-ID: <20150514115355.GT32765@cbox> (raw)
In-Reply-To: <1427461765-14462-6-git-send-email-marc.zyngier@arm.com>

On Fri, Mar 27, 2015 at 01:09:25PM +0000, Marc Zyngier wrote:
> So far, we configured the world-switch by having a small array
> of pointers to the save and restore functions, depending on the
> GIC used on the platform.
> 
> Loading these values each time is a bit silly (they never change),
> and it makes sense to rely on the instruction patching instead.
> 
> This leads to a nice cleanup of the code.
> 
> Acked-by: Will Deacon <will.deacon@arm.com>
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

I gave this a quick spin on Juno as well and works as expected:

Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>

  reply	other threads:[~2015-05-14 11:44 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-27 13:09 [PATCH v3 0/5] arm64: Patching branches for fun and profit Marc Zyngier
2015-03-27 13:09 ` Marc Zyngier
2015-03-27 13:09 ` [PATCH v3 1/5] arm64: insn: Add aarch64_insn_decode_immediate Marc Zyngier
2015-03-27 13:09   ` Marc Zyngier
2015-03-27 13:09 ` [PATCH v3 2/5] arm64: alternative: Allow immediate branch as alternative instruction Marc Zyngier
2015-03-27 13:09   ` Marc Zyngier
2015-03-27 13:09 ` [PATCH v3 3/5] arm64: Extract feature parsing code from cpu_errata.c Marc Zyngier
2015-03-27 13:09   ` Marc Zyngier
2015-03-27 13:09 ` [PATCH v3 4/5] arm64: alternative: Introduce feature for GICv3 CPU interface Marc Zyngier
2015-03-27 13:09   ` Marc Zyngier
2015-05-14 11:25   ` Christoffer Dall
2015-05-14 11:25     ` Christoffer Dall
2015-05-28  9:27     ` Marc Zyngier
2015-05-28  9:27       ` Marc Zyngier
2015-05-28 13:02       ` Christoffer Dall
2015-05-28 13:02         ` Christoffer Dall
2015-05-28 13:12         ` Marc Zyngier
2015-05-28 13:12           ` Marc Zyngier
2015-03-27 13:09 ` [PATCH v3 5/5] arm64: KVM: Switch vgic save/restore to alternative_insn Marc Zyngier
2015-03-27 13:09   ` Marc Zyngier
2015-05-14 11:53   ` Christoffer Dall [this message]
2015-05-14 11:53     ` Christoffer Dall

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