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[209.132.180.67]) by mx.google.com with ESMTP id r9si3948875pfr.296.2018.01.24.23.48.42; Wed, 24 Jan 2018 23:48:56 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=DQUCGrcY; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751378AbeAYHrI (ORCPT + 99 others); Thu, 25 Jan 2018 02:47:08 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:54401 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751056AbeAYHrH (ORCPT ); Thu, 25 Jan 2018 02:47:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=HrPXUvOqJC4k+iJoksgptvXQT7nOkQwPUpjpwIRmWbU=; b=DQUCGrcYIn9iO8WPGJ+7DXilF +7zQuu26o6K+uw1NzLdtmx82j5rNApR4qNZYiQnXwcHu4SRtxmgk2VCag/wr4ka94RTaVpEDdUGCO fvXVPJ1eKXKsZ/0o2l9kj2lsEiCV8iOJbxiwYh3QmlGLreOux1tNpwL7dg40UskWW5sEnAr/E/RdU q/Hm9/frofSVHJxMAIY3ndO0IfJN5DhXvkgx0LrEA9O0yEQ5huOza/CXDPrE3jBZt4gE5pPXgQX76 SQLcOOzOh6kAYlup9rmXiJ9YdZO6j/VdqZhPowGW4QWolhuM0bkvdUdKY1LonE6ATfAULGc0XN/mm O66HvVQ4w==; Received: from hch by bombadil.infradead.org with local (Exim 4.89 #1 (Red Hat Linux)) id 1eecFO-0006eA-Va; Thu, 25 Jan 2018 07:46:58 +0000 Date: Wed, 24 Jan 2018 23:46:58 -0800 From: Christoph Hellwig To: Palmer Dabbelt Cc: linux@armlinux.org.uk, catalin.marinas@arm.com, Will Deacon , jonas@southpole.se, stefan.kristiansson@saunalahti.fi, shorne@gmail.com, tglx@linutronix.de, Christoph Hellwig , Arnd Bergmann , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, patches@groups.riscv.org Subject: Re: [PATCH v2 4/4] RISC-V: Move to the new generic IRQ handler Message-ID: <20180125074658.GD14162@infradead.org> References: <20180125030756.21787-1-palmer@sifive.com> <20180125030756.21787-5-palmer@sifive.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180125030756.21787-5-palmer@sifive.com> User-Agent: Mutt/1.9.1 (2017-09-22) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 24, 2018 at 07:07:56PM -0800, Palmer Dabbelt wrote: > The old mechanism for handling IRQs on RISC-V was pretty ugly: the arch > code looked at the Kconfig entry for our first-level irqchip driver and > called into it directly. > > This patch uses the new 0generic IRQ handling infastructure, which > essentially just deletes a bunch of code. This does add an additional > load to the interrupt latency, but there's a lot of tuning left to be > done there on RISC-V so I think it's OK for now. > > Signed-off-by: Palmer Dabbelt Looks good, Reviewed-by: Christoph Hellwig