[PATCH] powerpc: DABR exceptions should report the address not the PC

When taking a DABR exception we were reporting the PC. It makes more
sense to report the address that caused the exception, and the gdb guys
would like it that way.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 93d4fbf..a4815d3 100644 (file)
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -81,7 +81,8 @@ static int store_updates_sp(struct pt_regs *regs)
 }
 
 #if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
-static void do_dabr(struct pt_regs *regs, unsigned long error_code)
+static void do_dabr(struct pt_regs *regs, unsigned long address,
+                   unsigned long error_code)
 {
        siginfo_t info;
 
@@ -99,7 +100,7 @@ static void do_dabr(struct pt_regs *regs, unsigned long error_code)
        info.si_signo = SIGTRAP;
        info.si_errno = 0;
        info.si_code = TRAP_HWBKPT;
-       info.si_addr = (void __user *)regs->nip;
+       info.si_addr = (void __user *)address;
        force_sig_info(SIGTRAP, &info, current);
 }
 #endif /* !(CONFIG_4xx || CONFIG_BOOKE)*/
@@ -159,7 +160,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
 #if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
        if (error_code & DSISR_DABRMATCH) {
                /* DABR match */
-               do_dabr(regs, error_code);
+               do_dabr(regs, address, error_code);
                return 0;
        }
 #endif /* !(CONFIG_4xx || CONFIG_BOOKE)*/