linux-kernel - Re: qemu-kvm loops after kernel udpate

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Message-ID: <5050D048.4010704@suse.cz>
Date:	Wed, 12 Sep 2012 20:11:20 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	Avi Kivity <avi@...hat.com>
CC:	Jiri Slaby <jirislaby@...il.com>,
	Marcelo Tosatti <mtosatti@...hat.com>, kvm@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: qemu-kvm loops after kernel udpate

On 09/12/2012 10:18 AM, Avi Kivity wrote:
> On 09/12/2012 11:13 AM, Jiri Slaby wrote:
>>
>>>  Please provide the output of vmxcap
>>> (http://goo.gl/c5lUO),
>>
>>   Unrestricted guest                       no
> 
> The big real mode fixes.
> 
> 
>>
>>> and a snapshot of kvm_stat while the guest is hung.
>>
>> kvm statistics
>>
>>  exits                                      6778198  615942
>>  host_state_reload                             1988     187
>>  irq_exits                                     1523     138
>>  mmu_cache_miss                                   4       0
>>  fpu_reload                                       1       0
> 
> Please run this as root so we get the tracepoint based output; and press
> 'x' when it's running so we get more detailed output.

kvm statistics

 kvm_exit                                  13798699  330708
 kvm_entry                                 13799110  330708
 kvm_page_fault                            13793650  330604
 kvm_exit(EXCEPTION_NMI)                    6188458  330604
 kvm_exit(EXTERNAL_INTERRUPT)                  2169     105
 kvm_exit(TPR_BELOW_THRESHOLD)                   82       0
 kvm_exit(IO_INSTRUCTION)                         6       0
 kvm_exit(PAUSE_INSTRUCTION)                      5       0
 kvm_exit(MCE_DURING_VMENTRY)                     5       0
 kvm_exit(DR_ACCESS)                              5       0
 kvm_exit(VMPTRLD)                                5       0
 kvm_exit(VMLAUNCH)                               5       0
 kvm_exit(INVLPG)                                 5       0
 kvm_exit(VMCALL)                                 5       0
 kvm_exit(WBINVD)                                 5       0
 kvm_exit(MONITOR_INSTRUCTION)                    5       0
 kvm_exit(MWAIT_INSTRUCTION)                      4       0
 kvm_exit(NMI_WINDOW)                             4       0
 kvm_exit(VMREAD)                                 4       0
 kvm_exit(XSETBV)                                 4       0
 kvm_exit(RDPMC)                                  4       0
 kvm_exit(CPUID)                                  4       0
 kvm_exit(VMCLEAR)                                4       0
 kvm_exit(PENDING_INTERRUPT)                      4       0
 kvm_exit(VMRESUME)                               4       0
 kvm_exit(APIC_ACCESS)                            4       0
 kvm_exit(INVALID_STATE)                          4       0
 kvm_exit(MSR_READ)                               4       0
 kvm_exit(VMOFF)                                  4       0
 kvm_exit(RDTSC)                                  4       0
 kvm_exit(MSR_WRITE)                              4       0
 kvm_exit(VMPTRST)                                4       0
 kvm_exit(VMWRITE)                                4       0
 kvm_exit(HLT)                                    3       0
 kvm_exit(EPT_VIOLATION)                          3       0
 kvm_exit(TASK_SWITCH)                            3       0
 kvm_exit(CR_ACCESS)                              3       0
 kvm_exit(TRIPLE_FAULT)                           3       0
 kvm_exit(VMON)                                   3       0
 kvm_exit(EPT_MISCONFIG)                          3       0

thanks,
-- 
js
suse labs
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