From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 58C3F4B66FB; Fri, 18 Sep 2026 12:22:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789734141; cv=none; b=sBfCwWHohnLeSP9Jb2uUYuuwWs+lW6V4zvZqbq8qwYFAvm9F8tgKMxV+SgCVLp6hfZ8zlECq1cOz5uJFXWC6hl9F2qDKJIhNxyA81VJq1p63yaHCSVnxcNyLYb//LgF4NmuLN7QnwASUHD4uu0JbASNoW7/WWyKuffotDkOHIDI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789734141; c=relaxed/simple; bh=lEELuZkcKmWVga9GWoWIwjLxbdU3EaN+HUnTEhXOFqM=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=MFQOKTkY2W6NZtUpcKSQeAGeJQJTfZYheC0ouTuf+SPc9q/3GXFMl5UrrxQGpDcX9h4+kytH9iIp76n8SK2H9E7Rg+HLTOPKOntIJCiaHJjNeUswtdUiEmLIXVo4am1DTUc4M9DYajW2LPGwDxZgt/NsoAn7ZTjMwiN8krfpCsE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MJesS2IT; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MJesS2IT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED4871F000FF; Fri, 18 Sep 2026 12:22:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789734140; bh=d/FKmRJTFKjN61zM8Shm3EAv+49OCi1rIwEX+Kc9iSg=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=MJesS2IT6/CHQ8vTOBoPSbef7+P6PbR2delYAoJYpAXdZsBdcgZEqlBghTt5CsHY7 hAbqG0D7N4L3tby5YPivtWfDGi66Qi0FNXPngGYBShEonzaaIWD7KnP5OhQnkgptVM 652QvrSsvRnykVQI0a3Vko6PpsZ3uQ8ATwXDzZnKa/Swqjgj4Da5UtijM124K4IgY6 C5xydH+0DoxjvZ4eXZK/zDcy96qKKQSXxt7JRmS4N+uY49M901pUlzszpBb6hI2j/k iSQ6uNcbTTBrx7AcXHY4SjXR2OL4w+dkh6xts1vQrkyCuFALhh6nf29Uyj37jUdvns 4GazOT4QfNwjA== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1x7Xbd-0000000Ab7M-3nmh; Fri, 18 Sep 2026 12:22:17 +0000 Date: Fri, 18 Sep 2026 13:22:17 +0100 Message-ID: <86zexe4ume.wl-maz@kernel.org> From: Marc Zyngier To: Alexandru Elisei 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 In-Reply-To: <20260917154932.193943-1-alexandru.elisei@arm.com> References: <20260917154932.193943-1-alexandru.elisei@arm.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: alexandru.elisei@arm.com, 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 X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Thu, 17 Sep 2026 16:49:25 +0100, Alexandru Elisei 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(). M. -- Without deviation from the norm, progress is not possible.