From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikola Ciprich Subject: Re: paravirt clock stil causing hangs in kvm-65 Date: Tue, 8 Apr 2008 07:59:53 +0200 (CEST) Message-ID: References: <20080407213457.GA4473@dmt> <20080408011833.GA3257@dmt> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net, Avi Kivity To: Marcelo Tosatti Return-path: In-Reply-To: <20080408011833.GA3257@dmt> 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 On Mon, 7 Apr 2008, Marcelo Tosatti wrote: > I think the logic to wakeup tasks in HLT is racy. Nothing prevents > a timer event from being lost if it fires in between guest exit and > vcpu_block(). > > Please try the patch below. > Hi Marcelo, the problem persists even with patch. [ 1905.899112] [] ? default_idle+0x3b/0x70 [ 1905.899112] [] ? default_idle+0x0/0x70 [ 1905.899112] [] ? cpu_idle+0x7e/0xe0 [ 1905.899112] [] ? pda_init+0x30/0xb0 As I already said, if I enable ACPI, system does not boot at all (even with init=/bin/bash) and ends with mentioned trace immediately. If I disable ACPI, it hangs on "Starting udev", with init=/bin/bash it at least boots and I can use shell. At least for some time. Funny thing is, that If I then use poweroff, the system shuts down, ends with "System halted." message, but everything still seems to be working, shell, etc... ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Register now and save $200. Hurry, offer ends at 11:59 p.m., Monday, April 7! Use priority code J8TLD2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone