From mboxrd@z Thu Jan  1 00:00:00 1970
From: marc.zyngier@arm.com (Marc Zyngier)
Date: Sat, 09 Dec 2017 19:37:43 +0000
Subject: [PATCH v2 08/36] KVM: arm64: Slightly improve debug save/restore
 functions
In-Reply-To: <20171207170630.592-9-christoffer.dall@linaro.org>
References: <20171207170630.592-1-christoffer.dall@linaro.org>
 <20171207170630.592-9-christoffer.dall@linaro.org>
Message-ID: <861sk3sneg.wl-marc.zyngier@arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Thu, 07 Dec 2017 17:06:02 +0000,
Christoffer Dall wrote:
> 
> The debug save/restore functions can be improved by using the has_vhe()
> static key instead of the instruction alternative.  Using the static key
> uses the same paradigm as we're going to use elsewhere, it makes the
> code more readable, and it generates slightly better code (no
> stack setups and function calls unless necessary).
> 
> We also use a static key on the restore path, because it will be
> marginally faster than loading a value from memory.
> 
> Finally, we don't have to conditionally clear the debug dirty flag if
> it's set, we can just clear it.
> 
> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>

	M.

-- 
Jazz is not dead, it just smell funny.