From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48296) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dMgxx-0005ko-Hd for qemu-devel@nongnu.org; Sun, 18 Jun 2017 16:38:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dMgxt-0006gY-Iz for qemu-devel@nongnu.org; Sun, 18 Jun 2017 16:38:37 -0400 In-Reply-To: References: Mime-Version: 1.0 (Apple Message framework v753.1) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: G 3 Date: Sun, 18 Jun 2017 16:38:29 -0400 Subject: Re: [Qemu-devel] [PATCH v3] target-ppc: Enable open-pic timers to count and generate interrupts List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: alarson@ddci.com Cc: "qemu-devel@nongnu.org qemu-devel" , "qemu-ppc@nongnu.org list:PowerPC" On Jun 18, 2017, at 4:36 PM, alarson@ddci.com wrote: > G 3 wrote on 06/18/2017 09:45:25 AM: > >>>>> From: Aaron Larson >>>>> To: agraf@suse.de, alarson@ddci.com, david@gibson.dropbear.id.au, >>>> qemu-devel@nongnu.org, qemu-ppc@nongnu.org >>>>> Date: 06/05/2017 12:22 PM >>>>> Subject: [PATCH v3] target-ppc: Enable open-pic timers to count >>>>> and >>>> generate interrupts >>>>> >>>>> Previously QEMU open-pic implemented the 4 open-pic timers >>>>> including >>>>> all timer registers, but the timers did not "count" or generate >>>>> any >>>>> interrupts. The patch makes the timers both count and generate >>>>> interrupts. The timer clock frequency is fixed at 25MHZ. > > G3> Does QEMU behave differently after this patch is implemented? > > If the open-pic timers are programmed, then QEMU behaves > differently, otherwise there should be no difference. I guess I should have asked what differences did you see in QEMU's behavior?