Re: [Xen-devel] x86_32/entry.S question

["Jan Beulich" <jbeulich@xxxxxxxxxx>]

>        cli                             # tests must not race interrupts
>/*test_softirqs:*/
>        movl VCPU_processor(%ebx),%eax
>        shl  $IRQSTAT_shift,%eax
>        test %ecx,irq_stat(%eax,1)
>        jnz  process_softirqs
>        btr  $_VCPUF_nmi_pending,VCPU_flags(%ebx)   <<--- we are here
>        jc   process_nmi
>
>Taken from xen-3.0.2. The code may be outdated anyway, but doesn't the
>btr lack a lock prefix on SMP?

Yes, it was lacking a lock, but no, the code isn't there anymore in a shape
close to that.

Jan


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