From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E3F6F30CD89; Mon, 24 Nov 2025 14:12:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763993542; cv=none; b=olIlekIO1BqsXj47VXuxjQ92F4XnWuvf/06VeuDFdMAz7CFHJ3x52hPypX2VgN5n+S+h3cVWow1OVZRURfzehtsTTWEVADpnFcS5gHH7wp9tG2jWcr59lCUMLoUTaykoiKsEL5uQt97SvOnoxHcVAwevxT+gkVUKV5WJ7i7IgMM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763993542; c=relaxed/simple; bh=EQ3IrSxU9ixy8cMHUjletLF6L8CoG51o0Abml8Nr8Ok=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=sgbwUAs7x/A+1DcE6gWfl42IE969J2cS6pkwYnwtE14HhJLqVEfWMO0OxYDItCiqLDRa3Z+f3xvlh33fIVwKL557zPB9YDcSeRQS9Xacv75HD/2qht5mYPv6YEYN6VfAl6/1234Q+DYLVgOb4VTNcPIuxMhuOsl/YA2MnEDh3Ps= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lYlI9cON; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lYlI9cON" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 70D8DC4CEF1; Mon, 24 Nov 2025 14:12:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763993541; bh=EQ3IrSxU9ixy8cMHUjletLF6L8CoG51o0Abml8Nr8Ok=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=lYlI9cONxGOzokkOHF53pJrHJ7D2yC6ma6q+pV2nhsp8ve+1sdF40XbavTNBwsxJU du92OarhfouJygiW342aACY40yalGgHtEfd0jA4P74hF3bKo6u8OyyDuNdNog6YuRv Xi6IIGSKauDhUUZoIKed9dJNZRkLORCEZ0oRuOKWhrKOwJP/ubbjH2JhXkHbisER4I CpXoHPmL6VirUxs7SYylIIWNF64SO7BLBxNkVuI7mHqf9Rvzs5D5lGho/Zra8u0iMr mwc6wg+iywYqrRLVr1NwOcG3D9rA7ccRJOWaFaoAM+bskfeiCdJx2oMV1ygYD7pfd1 pqN33vHJqJCiA== 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 1vNXIh-00000007s51-1lBx; Mon, 24 Nov 2025 14:12:19 +0000 Date: Mon, 24 Nov 2025 14:12:18 +0000 Message-ID: <86jyzfr03h.wl-maz@kernel.org> From: Marc Zyngier To: Mark Brown Cc: Fuad Tabba , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Christoffer Dall , Volodymyr Babchuk , Yao Yuan Subject: Re: [PATCH v2 29/45] KVM: arm64: GICv3: Set ICH_HCR_EL2.TDIR when interrupts overflow LR capacity In-Reply-To: <86ldjvr1kc.wl-maz@kernel.org> References: <20251109171619.1507205-1-maz@kernel.org> <20251109171619.1507205-30-maz@kernel.org> <86cy5ku06v.wl-maz@kernel.org> <51f5b5d7-9e98-40b8-8f8b-f50254573f3d@sirena.org.uk> <86o6orr356.wl-maz@kernel.org> <342302ba-5678-408a-ab63-1a854099d4a1@sirena.org.uk> <86ldjvr1kc.wl-maz@kernel.org> 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: broonie@kernel.org, tabba@google.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, oupton@kernel.org, yuzenghui@huawei.com, christoffer.dall@arm.com, Volodymyr_Babchuk@epam.com, yaoyuan@linux.alibaba.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Mon, 24 Nov 2025 13:40:35 +0000, Marc Zyngier wrote: > > Something is badly screwed in -next, and I'm not convinced it is KVM. > > d0f23ccf6ba9e cpumask: Cache num_possible_cpus() > > is my current suspect. Confirmed, and the fix is at 21782b3a5cd40892cb2995aa1ec3e74dd1112f1d. M. -- Without deviation from the norm, progress is not possible.