svn commit: r329297 - head/sys/x86/xen

[Mateusz Guzik]

Author: mjg
Date: Thu Feb 15 07:23:41 2018
New Revision: 329297
URL: https://svnweb.freebsd.org/changeset/base/329297

Log:
  xen: fix smp boot after r328157
  
  mce_stack was left unset leading to early crashes

Modified:
  head/sys/x86/xen/pv.c

Modified: head/sys/x86/xen/pv.c
==============================================================================
--- head/sys/x86/xen/pv.c	Thu Feb 15 03:22:53 2018	(r329296)
+++ head/sys/x86/xen/pv.c	Thu Feb 15 07:23:41 2018	(r329297)
@@ -99,6 +99,7 @@ static int xen_pv_start_all_aps(void);
 #ifdef SMP
 /* Variables used by amd64 mp_machdep to start APs */
 extern char *doublefault_stack;
+extern char *mce_stack;
 extern char *nmi_stack;
 #endif
 
@@ -218,6 +219,8 @@ start_xen_ap(int cpu)
 	bootstacks[cpu] =
 	    (void *)kmem_malloc(kernel_arena, stacksize, M_WAITOK | M_ZERO);
 	doublefault_stack =
+	    (char *)kmem_malloc(kernel_arena, PAGE_SIZE, M_WAITOK | M_ZERO);
+	mce_stack =
 	    (char *)kmem_malloc(kernel_arena, PAGE_SIZE, M_WAITOK | M_ZERO);
 	nmi_stack =
 	    (char *)kmem_malloc(kernel_arena, PAGE_SIZE, M_WAITOK | M_ZERO);