[PATCH 1/2] x86/boot: print CPU number in bring up failure

[Roger Pau Monne]

Print the CPU ID that fails to respond to the init sequence, or that didn't
manage to reach the "callin" state.  Expand a bit the printed error
messages.  Otherwise the "Not responding." message is not easy to
understand by users.

Reported-by: Andrew Cooper <andrew.coop...@citrix.com>
Signed-off-by: Roger Pau Monné <roger....@citrix.com>
---
 xen/arch/x86/smpboot.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index 0189d6c332a4..48ce996ba414 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -618,10 +618,10 @@ static int do_boot_cpu(int apicid, int cpu)
             smp_mb();
             if ( bootsym(trampoline_cpu_started) == 0xA5 )
                 /* trampoline started but...? */
-                printk("Stuck ??\n");
+                printk("CPU%u: Didn't finish startup sequence\n", cpu);
             else
                 /* trampoline code not run */
-                printk("Not responding.\n");
+                printk("CPU%u: Not responding to startup\n", cpu);
         }
     }
 
-- 
2.49.0