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xen/pvh: allocate dbg_stack

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Or else init_secondary will hit a page fault (or write garbage
somewhere).

Sponsored by:	Citrix Systems R&D
This commit is contained in:
Roger Pau Monné 2018-05-24 10:22:57 +00:00
parent 791ca5907a
commit 92849603d0
1 changed files with 3 additions and 0 deletions
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3
sys/x86/xen/pv.c
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@ -101,6 +101,7 @@ static int xen_pv_start_all_aps(void);
extern char *doublefault_stack;
extern char *mce_stack;
extern char *nmi_stack;
extern char *dbg_stack;
#endif
/*
@ -224,6 +225,8 @@ start_xen_ap(int cpu)
(char *)kmem_malloc(kernel_arena, PAGE_SIZE, M_WAITOK | M_ZERO);
nmi_stack =
(char *)kmem_malloc(kernel_arena, PAGE_SIZE, M_WAITOK | M_ZERO);
dbg_stack =
(void *)kmem_malloc(kernel_arena, PAGE_SIZE, M_WAITOK | M_ZERO);
dpcpu =
(void *)kmem_malloc(kernel_arena, DPCPU_SIZE, M_WAITOK | M_ZERO);