From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 0/2] arm/arm64: KVM: Optimize arm64 fp/simd, saves 30-50% on exits
Date: Fri, 17 Jul 2015 11:28:23 +0200 [thread overview]
Message-ID: <20150717092823.GG14024@cbox> (raw)
In-Reply-To: <1437082178-11039-1-git-send-email-m.smarduch@samsung.com>
On Thu, Jul 16, 2015 at 02:29:36PM -0700, Mario Smarduch wrote:
> Currently we save/restore fp/simd on each exit. The first patch optimizes arm64
> save/restore, we only do so on Guest access. hackbench and several lmbench
> tests show anywhere from 30% to 50% of exits don't context switch the vfp/simd
> registers.
>
> For second patch 32-bit handler is updated to keep exit handling consistent
> with 64-bit code.
>
For the series:
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
next prev parent reply other threads:[~2015-07-17 9:28 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-16 21:29 [PATCH v4 0/2] arm/arm64: KVM: Optimize arm64 fp/simd, saves 30-50% on exits Mario Smarduch
2015-07-16 21:29 ` [PATCH v4 1/2] arm64: KVM: Optimize arm64 skip 30-50% vfp/simd save/restore " Mario Smarduch
2015-08-05 16:11 ` Marc Zyngier
2015-08-06 11:54 ` Christoffer Dall
2015-08-06 12:46 ` Marc Zyngier
2015-08-19 17:49 ` Christoffer Dall
2015-08-19 21:52 ` Mario Smarduch
2015-08-19 22:28 ` Marc Zyngier
2015-08-19 23:21 ` Mario Smarduch
2015-07-16 21:29 ` [PATCH v4 2/2] arm: KVM: keep arm vfp/simd exit handling consistent with arm64 Mario Smarduch
2015-07-17 9:28 ` Christoffer Dall [this message]
2015-07-17 10:28 ` [PATCH v4 0/2] arm/arm64: KVM: Optimize arm64 fp/simd, saves 30-50% on exits Marc Zyngier
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