* movl VCPU_processor(%ebx),%eax in exits.S
@ 2011-08-10 15:42 赵彬
2011-08-11 2:04 ` Wei Liu
0 siblings, 1 reply; 2+ messages in thread
From: 赵彬 @ 2011-08-10 15:42 UTC (permalink / raw)
To: xen-devel
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In the file \xen\arch\x86\hvm\svm\x86_32\exits.S
this instruction movl VCPU_processor(%ebx),%eax, I found
OFFSET(VCPU_processor, struct vcpu, processor) in asm-offsets.c,and so was
DEFINE(IRQSTAT_shift, LOG_2(sizeof(irq_cpustat_t)));
In my opinion,they means offset(vcpu,processor) and
LOG_2(sizeof(irq_cpustat_t) , am i right?
movl VCPU_processor(%ebx),%eax
shl $IRQSTAT_shift,%eax
testl $~0,irq_stat(%eax,1)
jnz svm_process_softirqs
I did't find irq_stat(,),and so I did't know what do the first three
instructions mean.
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^ permalink raw reply [flat|nested] 2+ messages in thread* Re: movl VCPU_processor(%ebx),%eax in exits.S
2011-08-10 15:42 movl VCPU_processor(%ebx),%eax in exits.S 赵彬
@ 2011-08-11 2:04 ` Wei Liu
0 siblings, 0 replies; 2+ messages in thread
From: Wei Liu @ 2011-08-11 2:04 UTC (permalink / raw)
To: 赵彬; +Cc: xen-devel
On Wed, Aug 10, 2011 at 11:42:06PM +0800, 赵彬 wrote:
> In the file \xen\arch\x86\hvm\svm\x86_32\exits.S
> this instruction movl VCPU_processor(%ebx),%eax, I found
> OFFSET(VCPU_processor, struct vcpu, processor) in asm-offsets.c,and so was
> DEFINE(IRQSTAT_shift, LOG_2(sizeof(irq_cpustat_t)));
> In my opinion,they means offset(vcpu,processor) and
> LOG_2(sizeof(irq_cpustat_t) , am i right?
>
> movl VCPU_processor(%ebx),%eax
> shl $IRQSTAT_shift,%eax
> testl $~0,irq_stat(%eax,1)
> jnz svm_process_softirqs
>
> I did't find irq_stat(,),and so I did't know what do the first three
> instructions mean.
xen/common/softirq.c
A simple grep is enough for you.
Wei.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-08-10 15:42 movl VCPU_processor(%ebx),%eax in exits.S 赵彬
2011-08-11 2:04 ` Wei Liu
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