From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: KVM Test result, kernel 873c05f.., userspace d102d75.. Date: Thu, 24 Apr 2008 16:00:22 +0300 Message-ID: <48108466.2080707@qumranet.com> References: <48106140.9070600@intel.com> <481070DF.8070709@qumranet.com> <200804242059.44235.sheng.yang@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net, Marcelo Tosatti To: "Yang, Sheng" Return-path: In-Reply-To: <200804242059.44235.sheng.yang@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org Yang, Sheng wrote: > On Thursday 24 April 2008 19:37:03 Avi Kivity wrote: > >> Yunfeng Zhao wrote: >> >>> Hi All, >>> >>> This is today's KVM test result against kvm.git >>> 873c05fa7e6fea27090b1bf0f67a073eadb04782 and kvm-userspace.git >>> d102d750f397b543fe620a3c77a7e5e42c483865. >>> >> I suspect 873c05fa7e6fea27090b1bf0f67a073eadb04782 itself, it's the only >> thing that has any chance of badness. >> >> Marcelo, any idea? Perhaps due to load, interrupts accumulate and can't >> be injected fast enough? >> >> These tests are run on a 2.6.22 host, which has a hacked >> smp_call_function_single() in external-module-compat.h, which may >> exaberate the problem. >> > > Yeah, I suspect the commit too(I tried tip without that, and found mostly > alright). In fact, I didn't use kvm_vcpu_kick() just because that I found > this function may causing hang on my host... But I didn't do more investigate > so I can't tell what's wrong, then I just chose way to keep it working... I > am sorry for not clarify... > I think smp_call_function_single() is miscompiled when using the compatibility code. I took it out-of-line to be sure (it is now in kernel/external-module-compat.c). No evidence, but... -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone