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[209.51.188.17]) by mx.google.com with ESMTPS id d24si12923145qka.252.2020.01.28.03.15.36 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 28 Jan 2020 03:15:36 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=fail header.i=@kernel.org header.s=default header.b=HND4zrJo; spf=pass (google.com: domain of qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from localhost ([::1]:57364 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iwOqG-00043Q-E1 for alex.bennee@linaro.org; Tue, 28 Jan 2020 06:15:36 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:57923) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iwOoW-0002Tz-IX for qemu-devel@nongnu.org; Tue, 28 Jan 2020 06:13:49 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iwOoV-0004Hp-Hp for qemu-devel@nongnu.org; Tue, 28 Jan 2020 06:13:48 -0500 Received: from mail.kernel.org ([198.145.29.99]:53228) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iwOoT-0004G2-BJ; Tue, 28 Jan 2020 06:13:45 -0500 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 29DF821739; Tue, 28 Jan 2020 11:13:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580210024; bh=M+CDq/a4jwD0PmQTrnO8ciZK2J5DAAtG91pLWGSuqUc=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=HND4zrJoUI5Fs2HHJbyJkEF2kn6rn4d9oLFnHse11yGmuLVd8js9MCrFi0hzky5hI bzTRwQiqvWo1TYiv/5M65Ab5HuKN/zcw08EsdS0niLgWF5bOmLokRDPMXtG3/Zk986 kNXXUtoAeXfnH2Ks4IeUNPm5dUMmROjp31xUht1M= Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1iwOoQ-001nok-EY; Tue, 28 Jan 2020 11:13:42 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Tue, 28 Jan 2020 11:13:42 +0000 From: Marc Zyngier To: Peter Maydell Subject: Re: [RFC PATCH] hw/arm/virt: Support NMI injection In-Reply-To: References: <20191219040612.28431-1-gshan@redhat.com> <1b718429-c74e-fbac-84b8-379f3291db40@redhat.com> <3ae0557c-c289-8a23-d62f-3dc2a12c0623@redhat.com> Message-ID: <97bd5cbfec30624aead987a0fd1c4ac6@kernel.org> X-Sender: maz@kernel.org User-Agent: Roundcube Webmail/1.3.8 X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: peter.maydell@linaro.org, eric.auger@redhat.com, drjones@redhat.com, gshan@redhat.com, jthierry@redhat.com, aik@ozlabs.ru, qemu-devel@nongnu.org, qemu-arm@nongnu.org, shan.gavin@gmail.com, pbonzini@redhat.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 198.145.29.99 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrew Jones , Gavin Shan , jthierry@redhat.com, Alexey Kardashevskiy , QEMU Developers , Auger Eric , qemu-arm , Shan Gavin , Paolo Bonzini Errors-To: qemu-devel-bounces+alex.bennee=linaro.org@nongnu.org Sender: "Qemu-devel" X-TUID: HR29mbisvmF7 On 2020-01-28 10:59, Peter Maydell wrote: > On Tue, 28 Jan 2020 at 10:56, Auger Eric wrote: >> On 1/28/20 10:25 AM, Marc Zyngier wrote: >> > You *could* try something like SDEI [1], but that's a pretty terrible >> > interface too. >> >> Thank you for the pointer. > > There was a patchset recently that had an SDEI implementation, > but I would strongly prefer not to have QEMU itself take > on the job of firmware API implementation, and the facilities > provided are somewhere between awkward and impossible to > implement from within a guest firmware blob :-/ Hey, I said it was terrible! ;-) M. -- Jazz is not dead. It just smells funny...