RE: FW: [Bug 117] New: [KVM-IPF] RTL8139 emulated network card can not work

"Zhang, Xiantao" <[email protected]>
Newsgroups org.kernel.vger.kvm-ia64
Message-ID <42DFA526FC41B1429CE7279EF83C6BDC01AFAAF8@pdsmsx415.ccr.corp.intel.com>
Jes Sorensen wrote:
> Jes Sorensen wrote:
>> Now I am seeing this in my syslog:
>> 
>> Oct 10 07:21:34 a4700rac kernel: vcpu 5 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 3 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 2 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 5 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 3 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 2 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 5 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 3 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 2 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 5 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 3 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 2 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 5 irq check
>> Oct 10 07:21:34 a4700rac kernel: vcpu 3 irq check
>> 
>> Note that I never seem to see irq checks for cpus 4, 6, 7 ..... maybe
>> syslog is chewing them up though, but it seems strange that they
>> never seem to appear.
> 
> Now, this is where it gets strange - I pulled out the above snapshot
> why the system was stuck in the boot process. However after a bit it
> came back and irqs showed up on cpu 4, 6, 7 as well..... adding the
> printk seems to have have an impact.... strange.

Hi, Jes
	I just did a simple try with disabling pal_halt_light emulation,
and guests boot well! So this is an issue caused by guest's halt
handling.  I remembered a guy of x86 side modified the halt logic(common
code in kvm_main.c) days ago. So this should be possible rootcause which
cause the issue.  :)
Thanks
Xiantao
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