From: m.smarduch@samsung.com (Mario Smarduch)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/2] arm/arm64: KVM: Optimize arm64 fp/simd, saves 30-50% on exits
Date: Tue, 16 Jun 2015 14:50:50 -0700 [thread overview]
Message-ID: <1434491452-19177-1-git-send-email-m.smarduch@samsung.com> (raw)
Currently we save/restore fp/simd on each exit. Fist patch optimizes arm64
save/restore, we only do so on Guest access. hackbench and
several lmbench tests show anywhere from 30% to above 50% optimzation
achieved.
In second patch 32-bit handler is updated to keep exit handling consistent
with 64-bit code.
Changes since v1:
- Addressed Marcs comments
- Verified optimization improvements with lmbench and hackbench, updated
commit message
Mario Smarduch (2):
Optimize arm64 skip 30-50% vfp/simd save/restore on exits
keep arm vfp/simd exit handling in sync with arm64
arch/arm/kvm/interrupts.S | 12 +++++-----
arch/arm64/include/asm/kvm_arm.h | 5 ++++-
arch/arm64/kvm/hyp.S | 46 +++++++++++++++++++++++++++++++++++---
3 files changed, 54 insertions(+), 9 deletions(-)
--
1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: Mario Smarduch <m.smarduch@samsung.com>
To: kvmarm@lists.cs.columbia.edu, marc.zyngier@arm.com,
christoffer.dall@linaro.org
Cc: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org,
catalin.marinas@arm.com, will.deacon@arm.com,
Mario Smarduch <m.smarduch@samsung.com>
Subject: [PATCH v2 0/2] arm/arm64: KVM: Optimize arm64 fp/simd, saves 30-50% on exits
Date: Tue, 16 Jun 2015 14:50:50 -0700 [thread overview]
Message-ID: <1434491452-19177-1-git-send-email-m.smarduch@samsung.com> (raw)
Currently we save/restore fp/simd on each exit. Fist patch optimizes arm64
save/restore, we only do so on Guest access. hackbench and
several lmbench tests show anywhere from 30% to above 50% optimzation
achieved.
In second patch 32-bit handler is updated to keep exit handling consistent
with 64-bit code.
Changes since v1:
- Addressed Marcs comments
- Verified optimization improvements with lmbench and hackbench, updated
commit message
Mario Smarduch (2):
Optimize arm64 skip 30-50% vfp/simd save/restore on exits
keep arm vfp/simd exit handling in sync with arm64
arch/arm/kvm/interrupts.S | 12 +++++-----
arch/arm64/include/asm/kvm_arm.h | 5 ++++-
arch/arm64/kvm/hyp.S | 46 +++++++++++++++++++++++++++++++++++---
3 files changed, 54 insertions(+), 9 deletions(-)
--
1.7.9.5
next reply other threads:[~2015-06-16 21:50 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-16 21:50 Mario Smarduch [this message]
2015-06-16 21:50 ` [PATCH v2 0/2] arm/arm64: KVM: Optimize arm64 fp/simd, saves 30-50% on exits Mario Smarduch
2015-06-16 21:50 ` [PATCH v2 1/2] arm64: KVM: Optimize arm64 fp/simd save/restore Mario Smarduch
2015-06-16 21:50 ` Mario Smarduch
2015-06-18 17:04 ` Marc Zyngier
2015-06-18 17:04 ` Marc Zyngier
2015-06-16 21:50 ` [PATCH v2 2/2] arm: KVM: keep arm vfp/simd exit handling consistent with arm64 Mario Smarduch
2015-06-16 21:50 ` Mario Smarduch
2015-06-18 17:27 ` Marc Zyngier
2015-06-18 17:27 ` Marc Zyngier
2015-06-18 23:49 ` Mario Smarduch
2015-06-18 23:49 ` Mario Smarduch
2015-06-19 13:50 ` Marc Zyngier
2015-06-19 13:50 ` Marc Zyngier
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