From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jan Beulich" Subject: Re: [PATCH, v2] reduce 'd' debug key's global impact Date: Thu, 06 May 2010 09:07:11 +0100 Message-ID: <4BE294CF0200007800001825@vpn.id2.novell.com> References: <4BE281E202000078000017BC@vpn.id2.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org >>> Keir Fraser 06.05.10 09:42 >>> >Pick something rare like SPURIOUS_APIC_VECTOR. In that particular handler >you can even put your check on the unlikely path that checks for and acks = a >real vectored interrupt. Hmm, yes, that's indeed better than the event check one. However, I noticed that even without that change on_selected_cpus() is being used in interrupt context, hence I wonder whether indeed only the new mechanism should be going the call-func-less route. Jan