From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1F07ACC6B34 for ; Thu, 15 Oct 2026 12:57:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=j8dujvmgK4dl/NXr7CvP1EwjRXMje/JjztxTmi7ODS8=; b=QhkFDXXoO0ynkfvU/X05ainH4H D3jFfJX8LbTbgnKykSIf4LQHGSg899YEj/TOdNf7tBxbQTR9gtG2rWP6p+3fOAO9JHz8JPfkKgGpg yHgnk36ioqAZAthqc7uM5U5dCXXEm4tKvphxI6jc1HqfPJ2/BLCvumk+eaBwwuYA4lpSMa088CtmQ TTLDHWBnT6ErFyRxVLeCeuPsEi6Waxw/OFieVLqdo5zdfZyj140Nc1N6Qsf7aG4KbA03lCbbj8mez 0MsxRTzzrxx2YPnBTsWxNy74n7tzzegCDUUPv5BETQpWZPE8vrKBOqyeVidQdVM5lOhu+34hLrRey raRvrDEQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xHL1R-00000000BRW-0UKP; Thu, 15 Oct 2026 12:57:25 +0000 Received: from out-243.mta0.migadu.com ([2001:41d0:1004:224b::f3] helo=mta0.migadu.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xHL1K-00000000BOa-0b6p for linux-arm-kernel@lists.infradead.org; Thu, 15 Oct 2026 12:57:20 +0000 X-Envelope-To: linux-arm-kernel@lists.infradead.org DKIM-Signature: a=rsa-sha256; bh=j8dujvmgK4dl/NXr7CvP1EwjRXMje/JjztxTmi7ODS8=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1792069033; v=1; x=1792673833; b=mZnEnph1NsfCOOhywNX7fVSoWXX7Zi9nR8ALAzfN+DX+0lwGE1SYwShqIdMmQJ+zQohwArB4 nfcQiLAw+Vwnqj4TKWKih+Zz22M5JQniKcsJKf1nhVzObd7eunB5XaVcmkf6MrWPXXOlBThBQ7q J+hp4KeHBfdGYwCQRMDAdnuI= X-Envelope-To: linux-arm-kernel@lists.infradead.org Received: by smtp.migadu.com with ESMTPS id 5aeab5d2299b6ea8; Thu, 15 Oct 2026 12:57:13 +0000 X-Mizu-Trace-ID: 5aeab5d2299b6ea8 X-Migadu-Flow: FLOW_OUT From: Fuad Tabba To: Marc Zyngier Cc: Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Steffen Eiden , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, Fuad Tabba Subject: Re: [PATCH 0/7] KVM: arm64: Fix cross-CPU vcpu pausing Date: Thu, 15 Oct 2026 13:57:12 +0100 Message-Id: <20261015125712.2650518-1-fuad.tabba@linux.dev> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20261015100539.1011760-1-maz@kernel.org> References: <20261015100539.1011760-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261015_055718_902497_DBAE7CB1 X-CRM114-Status: GOOD ( 10.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Marc, On Thu, 15 Oct 2026 11:05:32 +0100, Marc Zyngier wrote: [...] > This series addresses these defects, and builds on top of it to: > > - add pausing to a single vcpu in addition to the full VM pausing > > - convert LPI disabling and the MOVALL command to vcpu pausing > > Patches on top of -rc6, most of them being Cc stable without any > qualification (this has been broken for as long as I can remember). I'll send a couple of nits on patches 2 and 5 as replies to those patches. For the series: Reviewed-by: Fuad Tabba Tested on QEMU on top of -rc6: npVM and pVM boots in pKVM, npVM boots with nVHE and VHE hosts, and vgic_irq and vgic_lpi_stress in all three and with kvm-arm.mode=nested. My reproducer has vcpu 0 clear vcpu 1's EnableLPIs while the LPI is in vcpu 1's LR: on -rc6 the LPI is still pending on vcpu 1 afterwards, and with the series it isn't. With my vgic-its v2 [1] on top, my MOVALL selftest and my shared LPI and DISCARD reproducers pass, including with PROVE_LOCKING and with debug hooks that force the DISCARD race. Tested-by: Fuad Tabba v2 of "Fix LPI double mapping and DISCARD" [1] applies on top of this series as it is. Would you take it as it is, or would you like me to respin it? Cheers, /fuad [1] https://lore.kernel.org/all/20261013081646.933312-1-fuad.tabba@linux.dev/