x86: On CPU offline, freed stack should be *un*guarded.

Fix stupid typo.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index 9581d67e43b3bd37b93cfbbab1656f90574e0940..aec3b100a0080ba44b55c35077fa314110ed4b41 100644 (file)
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -646,7 +646,7 @@ static void cpu_smpboot_free(unsigned int cpu)
 
     if ( stack_base[cpu] != NULL )
     {
-        memguard_guard_stack(stack_base[cpu]);
+        memguard_unguard_stack(stack_base[cpu]);
         free_xenheap_pages(stack_base[cpu], STACK_ORDER);
         stack_base[cpu] = NULL;
     }