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 2F9C723B9 for ; Sat, 3 Dec 2022 09:45:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D32EEC433D6; Sat, 3 Dec 2022 09:45:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1670060756; bh=jNCwV3R1SBHRNWHvQ6DQ4eCjQoqZ5em6VSLRLsO35sU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=LY5sXM0oxAaph9jcIvONsd7vL3h4zXtl9wHYqjZvR4CtO376iSx3HshJdam6H5v6k lOFL28kMQzoWFpoVygCTq6+b9yQkdrP2/gtbXqtOvgScR8kNB0GsKub5MxRHmYaw9l JOiNHluBzyje7WdwOwhMVzozWfxqSDRgtAIouVd5LR9Y3dHMQjZKS/njDMQHKblukB xNz0IBJeuDJJgI8xs0spBhZ2UsXblC8UlNq1bm1kTMOsUH+XJthBKGCQR4uFAhtPLp 4UpBonEyEgbQQ1Km67wcOMC8U02AjdjWnio70IRMmt2k41Vb1YQ4M58WDe58gwQr6V 00+5HRFoiwS9g== Received: from 51-171-6-54-dynamic.agg9.chf.chf-qkr.eircom.net ([51.171.6.54] helo=wait-a-minute.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1p1P5m-00AFW6-Dg; Sat, 03 Dec 2022 09:45:54 +0000 Date: Sat, 03 Dec 2022 09:45:52 +0000 Message-ID: <87cz90u8fj.wl-maz@kernel.org> From: Marc Zyngier To: Lorenzo Pieralisi Cc: Mark Brown , Catalin Marinas , Will Deacon , Mark Rutland , Sami Mujawar , Thomas Gleixner , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev Subject: Re: [PATCH v2 00/14] arm64/nmi: Support for FEAT_NMI In-Reply-To: References: <20221112151708.175147-1-broonie@kernel.org> <87edthtzoz.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/27.1 (x86_64-pc-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: 51.171.6.54 X-SA-Exim-Rcpt-To: lpieralisi@kernel.org, broonie@kernel.org, catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, Sami.Mujawar@arm.com, tglx@linutronix.de, 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 Sat, 03 Dec 2022 08:25:10 +0000, Lorenzo Pieralisi wrote: Hey Lorenzo, > > On Fri, Dec 02, 2022 at 06:42:20PM +0000, Marc Zyngier wrote: > > On Sat, 12 Nov 2022 15:16:54 +0000, > > Mark Brown wrote: > > > > > > This series enables the architecture and GIC support for the arm64 > > > FEAT_NMI and FEAT_GICv3_NMI extensions in host kernels. These introduce > > > support for a new category of interrupts in the architecture code which > > > we can use to provide NMI like functionality, though the interrupts are > > > in fact maskable as the name would not imply. The GIC support was done > > > by Loreozo Pieralisi. > > > > FWIW, I have stashed a rework of my 2 year old vgic NMI series at > > [1]. It hasn't broken non-NMI behaviour in my early testing, but my > > FVP is out of commission for the time being. > > Thanks Marc, I will test the changes and update the ones I made > already accordingly, I should be able to do that next week I have > been sick but things are on the mend. I hope you get better soon! Let's come up with the best of both series (I'm pretty sure mine isn't perfect...). I also need to reply to Mark's patches, as there is a number of things I ended up changing in my patches and that should be part of the base NMI series (bogus trapping and restrictive cap being two main two). Thanks, M. -- Without deviation from the norm, progress is not possible.