From: Sean Christopherson <seanjc@google.com>
To: Oliver Upton <oliver.upton@linux.dev>
Cc: kvmarm@lists.linux.dev, Marc Zyngier <maz@kernel.org>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Eric Auger <eric.auger@redhat.com>,
kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH v3 01/19] KVM: Treat the device list as an rculist
Date: Mon, 22 Apr 2024 17:15:58 -0700 [thread overview]
Message-ID: <Zib9vslQW1iLrBAn@google.com> (raw)
In-Reply-To: <20240422200158.2606761-2-oliver.upton@linux.dev>
On Mon, Apr 22, 2024, Oliver Upton wrote:
> A subsequent change to KVM/arm64 will necessitate walking the device
> list outside of the kvm->lock. Prepare by converting to an rculist. This
> has zero effect on the VM destruction path, as it is expected every
> reader is backed by a reference on the kvm struct.
>
> On the other hand, ensure a given device is completely destroyed before
> dropping the kvm->lock in the release() path, as certain devices expect
> to be a singleton (e.g. the vfio-kvm device).
>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Sean Christopherson <seanjc@google.com>
> Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
> ---
Reviewed-by: Sean Christopherson <seanjc@google.com>
next prev parent reply other threads:[~2024-04-23 0:16 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 20:01 [PATCH v3 00/19] KVM: arm64: Transition to a per-ITS translation cache Oliver Upton
2024-04-22 20:01 ` [PATCH v3 01/19] KVM: Treat the device list as an rculist Oliver Upton
2024-04-23 0:15 ` Sean Christopherson [this message]
2024-04-22 20:01 ` [PATCH v3 02/19] KVM: arm64: vgic-its: Walk LPI xarray in its_sync_lpi_pending_table() Oliver Upton
2024-04-22 20:01 ` [PATCH v3 03/19] KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_invall() Oliver Upton
2024-04-22 20:01 ` [PATCH v3 04/19] KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_cmd_handle_movall() Oliver Upton
2024-04-22 20:01 ` [PATCH v3 05/19] KVM: arm64: vgic-debug: Use an xarray mark for debug iterator Oliver Upton
2024-04-22 20:01 ` [PATCH v3 06/19] KVM: arm64: vgic-its: Get rid of vgic_copy_lpi_list() Oliver Upton
2024-04-22 20:01 ` [PATCH v3 07/19] KVM: arm64: vgic-its: Scope translation cache invalidations to an ITS Oliver Upton
2024-04-22 20:01 ` [PATCH v3 08/19] KVM: arm64: vgic-its: Maintain a translation cache per ITS Oliver Upton
2024-04-22 20:01 ` [PATCH v3 09/19] KVM: arm64: vgic-its: Spin off helper for finding ITS by doorbell addr Oliver Upton
2024-04-22 20:01 ` [PATCH v3 10/19] KVM: arm64: vgic-its: Use the per-ITS translation cache for injection Oliver Upton
2024-04-22 20:01 ` [PATCH v3 11/19] KVM: arm64: vgic-its: Rip out the global translation cache Oliver Upton
2024-04-22 20:01 ` [PATCH v3 12/19] KVM: arm64: vgic-its: Get rid of the lpi_list_lock Oliver Upton
2024-04-22 20:01 ` [PATCH v3 13/19] KVM: selftests: Align with kernel's GIC definitions Oliver Upton
2024-04-22 20:01 ` [PATCH v3 14/19] KVM: selftests: Standardise layout of GIC frames Oliver Upton
2024-04-22 20:01 ` [PATCH v3 15/19] KVM: selftests: Add quadword MMIO accessors Oliver Upton
2024-04-22 20:01 ` [PATCH v3 16/19] KVM: selftests: Add a minimal library for interacting with an ITS Oliver Upton
2024-04-22 20:01 ` [PATCH v3 17/19] KVM: selftests: Add helper for enabling LPIs on a redistributor Oliver Upton
2024-04-22 20:01 ` [PATCH v3 18/19] KVM: selftests: Use MPIDR_HWID_BITMASK from cputype.h Oliver Upton
2024-04-22 20:01 ` [PATCH v3 19/19] KVM: selftests: Add stress test for LPI injection Oliver Upton
2024-04-25 12:33 ` [PATCH v3 00/19] KVM: arm64: Transition to a per-ITS translation cache Marc Zyngier
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