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-rw-r--r--i386/i386/pcb.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/i386/i386/pcb.c b/i386/i386/pcb.c
index 4f34391e..362d990d 100644
--- a/i386/i386/pcb.c
+++ b/i386/i386/pcb.c
@@ -157,7 +157,8 @@ void switch_ktss(pcb)
#ifdef MACH_XEN
/* No IO mask here */
- hyp_stack_switch(KERNEL_DS, pcb_stack_top);
+ if (hyp_stack_switch(KERNEL_DS, pcb_stack_top))
+ panic("stack_switch");
#else /* MACH_XEN */
curr_ktss(mycpu)->tss.esp0 = pcb_stack_top;
#endif /* MACH_XEN */