From: Alexandru Elisei <alexandru.elisei@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: will@kernel.org, julien.thierry.kdev@gmail.com,
kvm@vger.kernel.org, oupton@kernel.org, fuad.tabba@linux.dev,
joey.gouly@arm.com, seiden@linux.ibm.com, suzuki.poulose@arm.com,
yuzenghui@huawei.com, linux-arm-kernel@lists.infradead.org,
kvmarm@lists.linux.dev
Subject: Re: [PATCH kvmtool 0/7] Fix --vcpu-affinity
Date: Mon, 21 Sep 2026 09:59:38 +0100 [thread overview]
Message-ID: <arDx-mrK_V6jiKvT@raptor> (raw)
In-Reply-To: <86zexe4ume.wl-maz@kernel.org>
Hi Marc,
On Fri, Sep 18, 2026 at 01:22:17PM +0100, Marc Zyngier wrote:
> On Thu, 17 Sep 2026 16:49:25 +0100,
> Alexandru Elisei <alexandru.elisei@arm.com> wrote:
> >
> > Tested on an Orion board and a x86 machine. On the x86 machine, there's was this
> > one thread called 'kvm-nx-lpage-re' which had affinity of the VCPUs, but I
> > couldn't figure out where it was created. I grep'ed for each part of the name in
> > the source node, no luck. I used strace, and couldn't see a clone call that
> > returned the corresponding pid. Any clues would be appreciated.
>
> This is a KVM internal thread, from what I can tell. See
> arch/x86/kvm/mmu/mmu.c::kvm_mmu_start_lpage_recovery().
Indeed, it didn't cross my mind that it might KVM that is creating the thread.
Thanks for the hint, and to Joey too, he suggested it offline.
Alex
prev parent reply other threads:[~2026-09-21 8:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-17 15:49 [PATCH kvmtool 0/7] Fix --vcpu-affinity Alexandru Elisei
2026-09-17 15:49 ` [PATCH kvmtool 1/7] arm64: Pass the number of elements as the first argument to calloc() Alexandru Elisei
2026-09-17 15:49 ` [PATCH kvmtool 2/7] arm64: Consistently treat vcpu_affinity_cpuset as dynamically allocated Alexandru Elisei
2026-09-17 15:49 ` [PATCH kvmtool 3/7] arm64: Free the temporary cpumask in vcpu_affinity_parser() Alexandru Elisei
2026-09-17 15:49 ` [PATCH kvmtool 4/7] arm64/pmu: Consider kvmtool's affinity when searching for a PMU Alexandru Elisei
2026-09-17 15:49 ` [PATCH kvmtool 5/7] Correctly apply --vcpu-affinity to the VCPU threads Alexandru Elisei
2026-09-17 15:49 ` [RFC PATCH kvmtool 6/7] Introduce kvm_create_thread() Alexandru Elisei
2026-09-17 15:49 ` [RFC PATCH kvmtool 7/7] Don't apply --vcpu-affinity to threads spawned from VCPUs Alexandru Elisei
2026-09-18 12:22 ` [PATCH kvmtool 0/7] Fix --vcpu-affinity Marc Zyngier
2026-09-21 8:59 ` Alexandru Elisei [this message]
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