[0/2] KVM: arm/arm64: vgic-its: Guest memory access fixes

Message ID	20190319133022.10693-1-marc.zyngier@arm.com (mailing list archive)
Headers	show Return-Path: <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> From: Marc Zyngier <marc.zyngier@arm.com> To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Subject: [PATCH 0/2] KVM: arm/arm64: vgic-its: Guest memory access fixes Date: Tue, 19 Mar 2019 13:30:20 +0000 Message-Id: <20190319133022.10693-1-marc.zyngier@arm.com> MIME-Version: 1.0 Precedence: list Cc: Julien Thierry <julien.thierry@arm.com>, Andre Przywara <Andre.Przywara@arm.com>, Suzuki K Poulose <suzuki.poulose@arm.com>, Christoffer Dall <Christoffer.Dall@arm.com>, Eric Auger <eric.auger@redhat.com>, James Morse <james.morse@arm.com> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org
Series	KVM: arm/arm64: vgic-its: Guest memory access fixes \| expand [0/2] KVM: arm/arm64: vgic-its: Guest memory access fixes [1/2] KVM: arm/arm64: vgic-its: Take the srcu lock when writing to guest memory [2/2] KVM: arm/arm64: vgic-its: Take the srcu lock when parsing the memslots

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20190319133022.10693-1-marc.zyngier@arm.com (mailing list archive)

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From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu,
 kvm@vger.kernel.org
Subject: [PATCH 0/2] KVM: arm/arm64: vgic-its: Guest memory access fixes
Date: Tue, 19 Mar 2019 13:30:20 +0000
Message-Id: <20190319133022.10693-1-marc.zyngier@arm.com>
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Cc: Julien Thierry <julien.thierry@arm.com>,
 Andre Przywara <Andre.Przywara@arm.com>,
 Suzuki K Poulose <suzuki.poulose@arm.com>,
 Christoffer Dall <Christoffer.Dall@arm.com>,
 Eric Auger <eric.auger@redhat.com>, James Morse <james.morse@arm.com>
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Series

KVM: arm/arm64: vgic-its: Guest memory access fixes | expand

Message

Marc Zyngier March 19, 2019, 1:30 p.m. UTC

While messing with something completely different, I managed to
trigger a number of RCU warnings, due to the lack of srcu locking
in the ITS code.

Andre partially addressed those last year[1], but there was some
more left.

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2018-May/577056.html

Marc Zyngier (2):
  KVM: arm/arm64: vgic-its: Take the srcu lock when writing to guest
    memory
  KVM: arm/arm64: vgic-its: Take the srcu lock when parsing the memslots

 arch/arm/include/asm/kvm_mmu.h   | 11 +++++++++++
 arch/arm64/include/asm/kvm_mmu.h | 11 +++++++++++
 virt/kvm/arm/vgic/vgic-its.c     | 21 ++++++++++++++-------
 3 files changed, 36 insertions(+), 7 deletions(-)