提交 92af254a 编写于 作者: L Linus Torvalds
......@@ -42,6 +42,7 @@ EXPORT_SYMBOL(clear_page);
#ifdef CONFIG_VIRTUAL_MEM_MAP
#include <linux/bootmem.h>
EXPORT_SYMBOL(min_low_pfn); /* defined by bootmem.c, but not exported by generic code */
EXPORT_SYMBOL(max_low_pfn); /* defined by bootmem.c, but not exported by generic code */
#endif
......
......@@ -740,7 +740,7 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
switch(val) {
case DIE_BREAK:
/* err is break number from ia64_bad_break() */
if (args->err == 0x80200 || args->err == 0x80300)
if (args->err == 0x80200 || args->err == 0x80300 || args->err == 0)
if (pre_kprobes_handler(args))
ret = NOTIFY_STOP;
break;
......
......@@ -132,24 +132,6 @@ __kprobes ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
siginfo_t siginfo;
int sig, code;
/* break.b always sets cr.iim to 0, which causes problems for
* debuggers. Get the real break number from the original instruction,
* but only for kernel code. User space break.b is left alone, to
* preserve the existing behaviour. All break codings have the same
* format, so there is no need to check the slot type.
*/
if (break_num == 0 && !user_mode(regs)) {
struct ia64_psr *ipsr = ia64_psr(regs);
unsigned long *bundle = (unsigned long *)regs->cr_iip;
unsigned long slot;
switch (ipsr->ri) {
case 0: slot = (bundle[0] >> 5); break;
case 1: slot = (bundle[0] >> 46) | (bundle[1] << 18); break;
default: slot = (bundle[1] >> 23); break;
}
break_num = ((slot >> 36 & 1) << 20) | (slot >> 6 & 0xfffff);
}
/* SIGILL, SIGFPE, SIGSEGV, and SIGBUS want these field initialized: */
siginfo.si_addr = (void __user *) (regs->cr_iip + ia64_psr(regs)->ri);
siginfo.si_imm = break_num;
......
......@@ -110,8 +110,9 @@ extern int ia64_pfn_valid (unsigned long pfn);
# define pfn_to_page(pfn) (mem_map + (pfn))
#elif defined(CONFIG_DISCONTIGMEM)
extern struct page *vmem_map;
extern unsigned long min_low_pfn;
extern unsigned long max_low_pfn;
# define pfn_valid(pfn) (((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
# define page_to_pfn(page) ((unsigned long) (page - vmem_map))
# define pfn_to_page(pfn) (vmem_map + (pfn))
#endif
......
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