Re: kvm: Unknown error 524, Fail to handle apic access vmexit
* Martin Michlmayr [EMAIL PROTECTED] [2008-07-16 15:38]: And if it can be reproduce stable? I can reproduce this 100%. Alex Williams suggested offline to use -cpu pentium3 and indeed with this option the bug doesn't show up. Does that give you any clue? -- Martin Michlmayr http://www.cyrius.com/ -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm: Unknown error 524, Fail to handle apic access vmexit
* Yang, Sheng [EMAIL PROTECTED] [2008-07-16 11:26]: Hi Martin, can you show more dmesg here? It doesn't contain any other messages from kvm. If you still want it, let me know. And if it can be reproduce stable? I can reproduce this 100%. Anyway, I just tried 2.6.26 with FlexPriority disabled and now kvm no longer exits (and there's no Fail to handle apic access vmexit message) but Windows still displays the same blue screen (and reboots). -- Martin Michlmayr http://www.cyrius.com/ -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm: Unknown error 524, Fail to handle apic access vmexit
Yang, Sheng wrote: On Tuesday 15 July 2008 23:19:07 Dor Laor wrote: Martin Michlmayr wrote: I installed a Windows XP SP2 guest on a Debian x86_64 host The installation itself went fine but kvm aborts when when XP starts during Windows XP Setup. XP mentions something with intelppm.sys (see the attached screenshot) and kvm says: kvm_run: Unknown error 524 kvm_run returned -524 It's a FlexPriority bug, while it should be solved, you can disable it by using kvm-intel module parameter. Dor, are you sure it's a FlexPriority bug? Well, I'm not sure it's the FlexPriority's fault, it's just when it is disabled it does not happen and I saw the apic access. It can be miss emulation too. It happened to me on ~ kvm-69 If you look at where is the complain, you would find there is a result of emulate_instruction(). And you will find a clearly emulation failed (mmio) rip 7cb3d000 ff ff 8d 85 in the bug tracker Martin metioned above the Fail to handle apic access vmexit! Offset is 0xf0(Spurious Interrupt Vector Register). I don't think ff ff 8d 85 is a vaild opcode for that case. Maybe it's a regression? The last report is long ago... Hi Martin, can you show more dmesg here? And if it can be reproduce stable? Thanks. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm: Unknown error 524, Fail to handle apic access vmexit
Martin Michlmayr wrote: I installed a Windows XP SP2 guest on a Debian x86_64 host The installation itself went fine but kvm aborts when when XP starts during Windows XP Setup. XP mentions something with intelppm.sys (see the attached screenshot) and kvm says: kvm_run: Unknown error 524 kvm_run returned -524 It's a FlexPriority bug, while it should be solved, you can disable it by using kvm-intel module parameter. In dmesg, I see: [ 8891.352876] Fail to handle apic access vmexit! Offset is 0xf0 This happens with kvm 70, and kernel 2.6.25 and 2.6.26-rc9. Someone else reported a similar problem before but there was no response: http://www.mail-archive.com/[EMAIL PROTECTED]/msg12111.html -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: kvm: Unknown error 524, Fail to handle apic access vmexit
On Tuesday 15 July 2008 23:19:07 Dor Laor wrote: Martin Michlmayr wrote: I installed a Windows XP SP2 guest on a Debian x86_64 host The installation itself went fine but kvm aborts when when XP starts during Windows XP Setup. XP mentions something with intelppm.sys (see the attached screenshot) and kvm says: kvm_run: Unknown error 524 kvm_run returned -524 It's a FlexPriority bug, while it should be solved, you can disable it by using kvm-intel module parameter. Dor, are you sure it's a FlexPriority bug? If you look at where is the complain, you would find there is a result of emulate_instruction(). And you will find a clearly emulation failed (mmio) rip 7cb3d000 ff ff 8d 85 in the bug tracker Martin metioned above the Fail to handle apic access vmexit! Offset is 0xf0(Spurious Interrupt Vector Register). I don't think ff ff 8d 85 is a vaild opcode for that case. Maybe it's a regression? The last report is long ago... Hi Martin, can you show more dmesg here? And if it can be reproduce stable? Thanks. -- regards Yang, Sheng In dmesg, I see: [ 8891.352876] Fail to handle apic access vmexit! Offset is 0xf0 This happens with kvm 70, and kernel 2.6.25 and 2.6.26-rc9. Someone else reported a similar problem before but there was no response: http://www.mail-archive.com/[EMAIL PROTECTED]/msg12 111.html - --- -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
