diff options
Diffstat (limited to 'arch/x86_64/kernel/setup64.c')
| -rw-r--r-- | arch/x86_64/kernel/setup64.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c index 7b7131d8bc90..39e728cfe6a0 100644 --- a/arch/x86_64/kernel/setup64.c +++ b/arch/x86_64/kernel/setup64.c @@ -145,7 +145,7 @@ void pda_init(int cpu) pda->irqstackptr += IRQSTACKSIZE-64; } -char boot_exception_stacks[N_EXCEPTION_STACKS * EXCEPTION_STKSZ] +char boot_exception_stacks[(N_EXCEPTION_STACKS - 2) * EXCEPTION_STKSZ + DEBUG_STKSZ] __attribute__((section(".bss.page_aligned"))); /* May not be marked __init: used by software suspend */ @@ -236,13 +236,27 @@ void __cpuinit cpu_init (void) */ for (v = 0; v < N_EXCEPTION_STACKS; v++) { if (cpu) { - estacks = (char *)__get_free_pages(GFP_ATOMIC, - EXCEPTION_STACK_ORDER); + static const unsigned int order[N_EXCEPTION_STACKS] = { + [0 ... N_EXCEPTION_STACKS - 1] = EXCEPTION_STACK_ORDER, + [DEBUG_STACK - 1] = DEBUG_STACK_ORDER + }; + + estacks = (char *)__get_free_pages(GFP_ATOMIC, order[v]); if (!estacks) panic("Cannot allocate exception stack %ld %d\n", v, cpu); } - estacks += EXCEPTION_STKSZ; + switch (v + 1) { +#if DEBUG_STKSZ > EXCEPTION_STKSZ + case DEBUG_STACK: + cpu_pda[cpu].debugstack = (unsigned long)estacks; + estacks += DEBUG_STKSZ; + break; +#endif + default: + estacks += EXCEPTION_STKSZ; + break; + } t->ist[v] = (unsigned long)estacks; } |