From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20050128 Firefox/1.0 Description of problem: I followed the instructions to install xen on fc3 at http://www.fedoraproject.org/wiki/FedoraXenQuickstart - with one exception - I changed the dom0_mem allocation in grub.conf from 130000 to 260000 On boot, in the blink of an eye xen gets stuck in a loop, displaying (XEN) APIC error on CPU0: 02(02) over and over. Nothing else seems to happen. Version-Release number of selected component (if applicable): xen-2-20050124 How reproducible: Always Steps to Reproduce: 1. Boot xen on my hardware :) Actual Results: See above Expected Results: Boot normally Additional info: The attached patch works around this problem and enables my machine to boot normally to runlevel 5. Please note that I do NOT have an SMP machine! I will also attach the output of lspci -vvv (called when running under Xen). cat /proc/cpuinfo is: processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 6 model name : AMD Athlon(tm) XP 1800+ stepping : 2 cpu MHz : 1533.413 cache size : 256 KB fdiv_bug : no hlt_bug : yes f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 mmx fxsr sse pni syscall mmxext 3dnowext 3dnow bogomips : 3060.53
Created attachment 110399 [details] Patch to workaround this bug
Created attachment 110400 [details] Output of lspci -vvv when running under Xen
Thanks for your patch. Shall I point the Xen developers at this bug report, or do you prefer to write them yourself? I will try to get your problem resolved in the upstream Xen tree (and the RPMs) ASAP.
> Shall I point the Xen developers at this bug report Yes please.
From User-Agent: XML-RPC A new Xen version has been pushed to Fedora Core 4 updates. This version of Xen (combined with the latest kernel update) should fix this issue. Please reopen this bug if the problems continue with the latest Xen and kernel updates.
From User-Agent: XML-RPC A new Xen version has been pushed to Fedora Core 4 updates. This version of Xen (together with kernel 2.6.12-1.1435 or newer) should fix this issue. Please reopen this bug if the problems continue with the latest Xen and kernel updates.
Rawhide / FC5test2 has a greatly rebased Xen hypervisor and kernel. Can you reproduce this problem on the latest kernel? Upstream Xen does not have your patch, but if the problem still exists, we can add a patch to rate-limit the printk: that would be preferable to disabling it entirely after the first occurrence.
Please reopen if this persists with current versions.