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From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: kvm@vger.kernel.org, Marc Zyngier <maz@kernel.org>,
	James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Zenghui Yu <yuzenghui@huawei.com>, Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	Gavin Shan <gshan@redhat.com>,
	Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH 0/2] KVM: arm64: Address soft lockups due to I-cache CMOs
Date: Wed, 20 Sep 2023 08:01:31 +0000	[thread overview]
Message-ID: <20230920080133.944717-1-oliver.upton@linux.dev> (raw)

Small series to address the soft lockups that Gavin hits when running
KVM guests w/ hugepages on an Ampere Altra Max machine. While I
absolutely loathe "fixing" the issue of slow I-cache CMOs in this way,
I can't really think of an alternative.

Oliver Upton (2):
  arm64: tlbflush: Rename MAX_TLBI_OPS
  KVM: arm64: Avoid soft lockups due to I-cache maintenance

 arch/arm64/include/asm/kvm_mmu.h  | 37 ++++++++++++++++++++++++++-----
 arch/arm64/include/asm/tlbflush.h |  8 +++----
 2 files changed, 35 insertions(+), 10 deletions(-)


base-commit: ce9ecca0238b140b88f43859b211c9fdfd8e5b70
-- 
2.42.0.459.ge4e396fd5e-goog


WARNING: multiple messages have this Message-ID (diff)
From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: kvm@vger.kernel.org, Marc Zyngier <maz@kernel.org>,
	James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Zenghui Yu <yuzenghui@huawei.com>, Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	Gavin Shan <gshan@redhat.com>,
	Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH 0/2] KVM: arm64: Address soft lockups due to I-cache CMOs
Date: Wed, 20 Sep 2023 08:01:31 +0000	[thread overview]
Message-ID: <20230920080133.944717-1-oliver.upton@linux.dev> (raw)

Small series to address the soft lockups that Gavin hits when running
KVM guests w/ hugepages on an Ampere Altra Max machine. While I
absolutely loathe "fixing" the issue of slow I-cache CMOs in this way,
I can't really think of an alternative.

Oliver Upton (2):
  arm64: tlbflush: Rename MAX_TLBI_OPS
  KVM: arm64: Avoid soft lockups due to I-cache maintenance

 arch/arm64/include/asm/kvm_mmu.h  | 37 ++++++++++++++++++++++++++-----
 arch/arm64/include/asm/tlbflush.h |  8 +++----
 2 files changed, 35 insertions(+), 10 deletions(-)


base-commit: ce9ecca0238b140b88f43859b211c9fdfd8e5b70
-- 
2.42.0.459.ge4e396fd5e-goog


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             reply	other threads:[~2023-09-20  8:01 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-20  8:01 Oliver Upton [this message]
2023-09-20  8:01 ` [PATCH 0/2] KVM: arm64: Address soft lockups due to I-cache CMOs Oliver Upton
2023-09-20  8:01 ` [PATCH 1/2] arm64: tlbflush: Rename MAX_TLBI_OPS Oliver Upton
2023-09-20  8:01   ` Oliver Upton
2023-09-21  3:27   ` Gavin Shan
2023-09-21  3:27     ` Gavin Shan
2023-09-22 10:25   ` Will Deacon
2023-09-22 10:25     ` Will Deacon
2023-09-20  8:01 ` [PATCH 2/2] KVM: arm64: Avoid soft lockups due to I-cache maintenance Oliver Upton
2023-09-20  8:01   ` Oliver Upton
2023-09-21  3:28   ` Gavin Shan
2023-09-21  3:28     ` Gavin Shan
2023-09-21  7:39 ` [PATCH 0/2] KVM: arm64: Address soft lockups due to I-cache CMOs Marc Zyngier
2023-09-21  7:39   ` Marc Zyngier
2023-09-22 17:56 ` Oliver Upton
2023-09-22 17:56   ` Oliver Upton

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