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 F3E0B1A5BBE for ; Mon, 8 Sep 2025 18:57:56 +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=1757357877; cv=none; b=KrJlxaqKZn5krNt5tgvUpSAeY9A8vKLqWOVWHO1/L35uBC+A5/bNY4GpJ8fW0tBUNFC6W70mbkm5QrK0LfxrMdsiDFTmva4zRakj6q2tV7oemF4pUTN/AkNLWTKKkSpbqPreVRhsakGz8olBzMP2O7mwpADjcHbcIY/nIL58PDk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757357877; c=relaxed/simple; bh=Ncq16siU0zhlrLLZXxgQkM9+H7vZy23ZtkN4+WofpPQ=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=So5VFKSWBtqjNyJywRAKaiI4BCqoq99NOuXEAv1wVKMgGV2SCosq4Ll1XZop0A5zu6ldhzE9Sd+//HtOdMfHXjgqoGRZr6VUQLj86/tQ/h/mV9ti8/2ZryNR8p27HM1RQxnQadTVzcR+hni1g03xOp/9iVaJd1NTxDs5KS4aCiI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jjcshULB; 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="jjcshULB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 58EB9C4CEF1; Mon, 8 Sep 2025 18:57:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757357876; bh=Ncq16siU0zhlrLLZXxgQkM9+H7vZy23ZtkN4+WofpPQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=jjcshULBJD3Coaj86TaUHHzWGM7SFeSHMtzqSLtdnlM6pI0bgxD5UYKLCqkQXTGb5 fx7UsBP168H4RwwgggfRvnxsPzOKAPe1aDZciesRqCpq4+llwjuPBQh/pd0HVnvb6b e1SkcvNCli14c6YH00YmEP2CUtkxCU5WFW+IP3GAi7LkgtFa/LLrCN0NtcwKSEqdZ6 7MqX77ZtvBXDAca7P0Em3oDpTpwqvs1JiDOyz5cwAMW+SdZIB67F7P9nJlohnmTpfe BjlZsNtH4mNDl5140gHGJffkMScHMdxjien3e7LtykvPS7G5zvt/fKFLwAVfCxGl+1 q3PuXYN7MSpMw== 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 1uvh3q-00000004QbH-1VOw; Mon, 08 Sep 2025 18:57:54 +0000 Date: Mon, 08 Sep 2025 19:57:53 +0100 Message-ID: <86qzwgdb66.wl-maz@kernel.org> From: Marc Zyngier To: Fuad Tabba Cc: Mark Brown , kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, oliver.upton@linux.dev, will@kernel.org, mark.rutland@arm.com, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, vdonnefort@google.com, qperret@google.com, sebastianene@google.com, keirf@google.com, smostafa@google.com Subject: Re: [PATCH v3 9/9] KVM: arm64: Reserve pKVM handle during pkvm_init_host_vm() In-Reply-To: References: <20250827101949.4089456-1-tabba@google.com> <20250827101949.4089456-10-tabba@google.com> <1a248f14-60f2-4f8f-8b4d-3c63e602fd54@sirena.org.uk> 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: kvmarm@lists.linux.dev 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: tabba@google.com, broonie@kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, oliver.upton@linux.dev, will@kernel.org, mark.rutland@arm.com, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, vdonnefort@google.com, qperret@google.com, sebastianene@google.com, keirf@google.com, smostafa@google.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, 08 Sep 2025 19:43:37 +0100, Fuad Tabba wrote: > > Hi Mark, > > On Mon, 8 Sept 2025 at 17:05, Mark Brown wrote: > > > > On Wed, Aug 27, 2025 at 11:19:49AM +0100, Fuad Tabba wrote: > > > > > When a pKVM guest is active, TLB invalidations triggered by host MMU > > > notifiers require a valid hypervisor handle. Currently, this handle is > > > only allocated when the first vCPU is run. > > > > I'm seeing the KVM selftests failing in -next on multiple nVHE > > platforms (pretty sure it's all of them) which bisect down to this > > commit, when booted in standard nVHE mode the selftests are all failing > > to initialise with: > > Thanks for pointing this out to me. I think I now know what the issue > might be, and I'll send out a fix soon. I'll drop the series from -next until we have clarity on this. Thanks, M. -- Without deviation from the norm, progress is not possible.