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| author | K.Prasad <prasad@linux.vnet.ibm.com> | 2009-06-01 20:17:06 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-06-02 22:47:00 +0200 |
| commit | 62edab9056a6cf0c9207339c8892c923a5217e45 (patch) | |
| tree | 2becd775fdc2a25df3daacf69d80685b251fbed9 /arch/x86/kernel/traps.c | |
| parent | hw-breakpoints: ftrace plugin for kernel symbol tracing using HW Breakpoint i... (diff) | |
| download | linux-62edab9056a6cf0c9207339c8892c923a5217e45.tar.xz linux-62edab9056a6cf0c9207339c8892c923a5217e45.zip | |
hw-breakpoints: reset bits in dr6 after the corresponding exception is handled
This patch resets the bit in dr6 after the corresponding exception is
handled in code, so that we keep a clean track of the current virtual debug
status register.
[ Impact: keep track of breakpoints triggering completion ]
Signed-off-by: K.Prasad <prasad@linux.vnet.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'arch/x86/kernel/traps.c')
| -rw-r--r-- | arch/x86/kernel/traps.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index de9913247dd0..124a4d5a95b2 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -545,8 +545,8 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code) /* Store the virtualized DR6 value */ tsk->thread.debugreg6 = dr6; - if (notify_die(DIE_DEBUG, "debug", regs, dr6, error_code, - SIGTRAP) == NOTIFY_STOP) + if (notify_die(DIE_DEBUG, "debug", regs, PTR_ERR(&dr6), error_code, + SIGTRAP) == NOTIFY_STOP) return; /* It's safe to allow irq's after DR6 has been saved */ |