[Xen-changelog] [xen stable-4.11] x86/crash: fix kexec transition breakage

[patchbot@xxxxxxx]

commit 9eac9324c7f19d8fd0824a1ba25fd1ba7d60bab8
Author:     Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
AuthorDate: Tue Oct 29 14:35:45 2019 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Oct 29 14:35:45 2019 +0100

    x86/crash: fix kexec transition breakage
    
    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>
    master commit: f56813f3470c5b4987963c3c41e4fe16b95c5a3f
    master date: 2019-07-22 18:02:24 +0100
---
 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 4db0758a88..c9469ae2ed 100644
--- a/xen/arch/x86/crash.c
+++ b/xen/arch/x86/crash.c
@@ -179,7 +179,7 @@ static void nmi_shootdown_cpus(void)
      */
     iommu_crash_shutdown();
 
-    if ( num_online_cpus() > 1 )
+    if ( cpu_online(cpu) )
     {
         __stop_this_cpu();
 
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.11

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