[Xen-devel] [PATCH] x86/crash: fix kexec transition breakage

[Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>]

Following 6ff560f7f ("x86/SMP: don't try to stop already stopped CPUs")
an incorrect condition was placed into kexec transition path
leaving crashing CPU always online breaking kdump kernel entering.
Correct it by unifying the condition with smp_send_stop().

Signed-off-by: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
---
 xen/arch/x86/crash.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/x86/crash.c b/xen/arch/x86/crash.c
index f9772dc..a9f3e18 100644
--- a/xen/arch/x86/crash.c
+++ b/xen/arch/x86/crash.c
@@ -169,7 +169,7 @@ static void nmi_shootdown_cpus(void)
      */
     iommu_crash_shutdown();
 
-    if ( num_online_cpus() > 1 )
+    if ( cpu_online(cpu) )
     {
         __stop_this_cpu();
 
-- 
2.7.4


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