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SUSE:SLE-12-SP3:GA
xen.950
556eabf7-x86-apic-Disable-the-LAPIC-later-in-sm...
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File 556eabf7-x86-apic-Disable-the-LAPIC-later-in-smp_send_stop.patch of Package xen.950
# Commit d639bdd9bbed8d003ad9be0b13535aca636b9d18 # Date 2015-06-03 09:25:43 +0200 # Author Andrew Cooper <andrew.cooper3@citrix.com> # Committer Jan Beulich <jbeulich@suse.com> x86/apic: Disable the LAPIC later in smp_send_stop() __stop_this_cpu() may reset the LAPIC mode back from x2apic to xapic, but will leave x2apic_enabled alone. This may cause disconnect_bsp_APIC() in disable_IO_APIC() to suffer a #GP fault. Disabling the LAPIC can safely be deferred to being the last action. Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> --- a/xen/arch/x86/smp.c +++ b/xen/arch/x86/smp.c @@ -321,9 +321,9 @@ void smp_send_stop(void) mdelay(1); local_irq_disable(); - __stop_this_cpu(); disable_IO_APIC(); hpet_disable(); + __stop_this_cpu(); local_irq_enable(); }
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