hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

sh: Look up the trap vector for the page fault notifier. 

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt 2008-09-21 12:06:43 +09:00
parent 4c59e2942e
commit 887f1ae3bc
1 changed files with 4 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/sh/mm/fault_32.c
View File

@ -21,26 +21,21 @@
#include <asm/tlbflush.h>
#include <asm/kgdb.h>
#ifdef CONFIG_KPROBES
static inline int notify_page_fault(struct pt_regs *regs, int trap)
{
int ret = 0;
#ifdef CONFIG_KPROBES
if (!user_mode(regs)) {
preempt_disable();
if (kprobe_running() && kprobe_fault_handler(regs, trap))
ret = 1;
preempt_enable();
}
#endif
return ret;
}
#else
static inline int notify_page_fault(struct pt_regs *regs, int trap)
{
return 0;
}
#endif
/*
* This routine handles page faults. It determines the address,
@ -58,7 +53,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
int fault;
siginfo_t info;
if (notify_page_fault(regs, writeaccess))
if (notify_page_fault(regs, lookup_exception_vector()))
return;
#ifdef CONFIG_SH_KGDB
@ -293,7 +288,7 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
pte_t *pte;
pte_t entry;
if (notify_page_fault(regs, writeaccess))
if (notify_page_fault(regs, lookup_exception_vector()))
return 0;
#ifdef CONFIG_SH_KGDB