[Xen-devel] x86_32/entry.S question

[Daniel Stodden <dns@xxxxxxxxxxxx>]

Hi all.

        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 The code may be outdated anyway, but doesn't the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?

regards,
daniel

-- 
dns@xxxxxxxxxxxx

Wire up your home and stay there.




_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel