From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH v4 5/7] RTC:Add RTC update-ended interrupt support Date: Wed, 21 Mar 2012 22:16:59 +0100 Message-ID: <4F6A454B.104@redhat.com> References: <4F698809.1050202@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "Zhang, Yang Z" , "aliguori@us.ibm.com" , "qemu-devel@nongnu.org" , "kvm@vger.kernel.org" To: Stefano Stabellini Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org List-Id: kvm.vger.kernel.org Il 21/03/2012 17:54, Stefano Stabellini ha scritto: >> > >> > No, you need to set UF in case the code observes it without actually >> > enabling interrupt delivery on the ISA bus. > > Well, if it is just about updating UF, can we do it only when the user > reads REG_C? Perhaps, but for AF it is much harder. Note that if the guest does not care, this will run just once. Paolo From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:35711) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SASu4-00059X-Sd for qemu-devel@nongnu.org; Wed, 21 Mar 2012 17:17:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SASu3-0001KH-9z for qemu-devel@nongnu.org; Wed, 21 Mar 2012 17:17:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:9259) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SASu3-0001IX-1t for qemu-devel@nongnu.org; Wed, 21 Mar 2012 17:17:07 -0400 Message-ID: <4F6A454B.104@redhat.com> Date: Wed, 21 Mar 2012 22:16:59 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <4F698809.1050202@redhat.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v4 5/7] RTC:Add RTC update-ended interrupt support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefano Stabellini Cc: "Zhang, Yang Z" , "aliguori@us.ibm.com" , "qemu-devel@nongnu.org" , "kvm@vger.kernel.org" Il 21/03/2012 17:54, Stefano Stabellini ha scritto: >> > >> > No, you need to set UF in case the code observes it without actually >> > enabling interrupt delivery on the ISA bus. > > Well, if it is just about updating UF, can we do it only when the user > reads REG_C? Perhaps, but for AF it is much harder. Note that if the guest does not care, this will run just once. Paolo