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From: Mark Rutland <mark.rutland@arm.com>
To: Christoffer Dall <christoffer.dall@linaro.org>
Cc: marc.zyngier@arm.com, andre.przywara@arm.com,
	will.deacon@arm.com, dave.martin@arm.com,
	catalin.marinas@arm.com, kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/3] arm64/kvm: use alternative auto-nop
Date: Thu, 8 Sep 2016 12:33:39 +0100	[thread overview]
Message-ID: <20160908113339.GB26570@leverpostej> (raw)
In-Reply-To: <20160908111648.GZ23592@cbox>

On Thu, Sep 08, 2016 at 01:16:48PM +0200, Christoffer Dall wrote:
> On Wed, Sep 07, 2016 at 11:07:10AM +0100, Mark Rutland wrote:
> > Make use of the new alternative_if and alternative_else_nop_endif and
> > get rid of our homebew NOP sleds, making the code simpler to read.
> 
> homebew?

Whoops. Should have been 'homebrew', though I'll change that to
'open-coded' to make this clearer.

> > Note that for __kvm_call_hyp the branch to __vhe_hyp_call has been moved
> > out of the alternative sequence, and in the default case there will be
> > four additional NOPs executed.
> > 
> > Signed-off-by: Mark Rutland <mark.rutland@arm.com>
> > Cc: Marc Zyngier <marc.zyngier@arm.com>
> > Cc: Christoffer Dall <christoffer.dall@linaro.org>
> > Cc: kvmarm@lists.cs.columbia.edu
> 
> Acked-by: Christoffer Dall <christoffer.dall@linaro.org>

Cheers!

Mark.

WARNING: multiple messages have this Message-ID (diff)
From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] arm64/kvm: use alternative auto-nop
Date: Thu, 8 Sep 2016 12:33:39 +0100	[thread overview]
Message-ID: <20160908113339.GB26570@leverpostej> (raw)
In-Reply-To: <20160908111648.GZ23592@cbox>

On Thu, Sep 08, 2016 at 01:16:48PM +0200, Christoffer Dall wrote:
> On Wed, Sep 07, 2016 at 11:07:10AM +0100, Mark Rutland wrote:
> > Make use of the new alternative_if and alternative_else_nop_endif and
> > get rid of our homebew NOP sleds, making the code simpler to read.
> 
> homebew?

Whoops. Should have been 'homebrew', though I'll change that to
'open-coded' to make this clearer.

> > Note that for __kvm_call_hyp the branch to __vhe_hyp_call has been moved
> > out of the alternative sequence, and in the default case there will be
> > four additional NOPs executed.
> > 
> > Signed-off-by: Mark Rutland <mark.rutland@arm.com>
> > Cc: Marc Zyngier <marc.zyngier@arm.com>
> > Cc: Christoffer Dall <christoffer.dall@linaro.org>
> > Cc: kvmarm at lists.cs.columbia.edu
> 
> Acked-by: Christoffer Dall <christoffer.dall@linaro.org>

Cheers!

Mark.

  reply	other threads:[~2016-09-08 11:25 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-07 10:07 [PATCH 0/3] arm64: alternative: add auto-nop support Mark Rutland
2016-09-07 10:07 ` Mark Rutland
2016-09-07 10:07 ` [PATCH 1/3] arm64: alternative: add auto-nop infrastructure Mark Rutland
2016-09-07 10:07   ` Mark Rutland
2016-09-13  8:36   ` Ard Biesheuvel
2016-09-13  8:36     ` Ard Biesheuvel
2016-09-13  8:57     ` Mark Rutland
2016-09-13  8:57       ` Mark Rutland
2016-09-13  8:59       ` Ard Biesheuvel
2016-09-13  8:59         ` Ard Biesheuvel
2016-09-07 10:07 ` [PATCH 2/3] arm64: use alternative auto-nop Mark Rutland
2016-09-07 10:07   ` Mark Rutland
2016-09-07 10:07 ` [PATCH 3/3] arm64/kvm: " Mark Rutland
2016-09-07 10:07   ` Mark Rutland
2016-09-08 11:16   ` Christoffer Dall
2016-09-08 11:16     ` Christoffer Dall
2016-09-08 11:33     ` Mark Rutland [this message]
2016-09-08 11:33       ` Mark Rutland

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