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

[patchbot@xxxxxxx]

commit f56813f3470c5b4987963c3c41e4fe16b95c5a3f
Author:     Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
AuthorDate: Fri Jul 19 14:07:48 2019 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Mon Jul 22 18:02:24 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>
---
 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 f9772dc2ab..a9f3e1890c 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();
 
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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