Commit-ID: da0cdc14f5f7e0faee6b2393fefed056cdb17146
Gitweb: http://git.kernel.org/tip/da0cdc14f5f7e0faee6b2393fefed056cdb17146
Author: K.Prasad <prasad@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 1 Jun 2009 23:45:03 +0530
Committer: Frederic Weisbecker <fweisbec@xxxxxxxxx>
CommitDate: Tue, 2 Jun 2009 22:46:59 +0200
hw-breakpoints: modify signal handling code to refrain from re-enabling HW Breakpoints
This patch disables re-enabling of Hardware Breakpoint registers through
the signal handling code. This is now done during from hw_breakpoint_handler().
Original-patch-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: K.Prasad <prasad@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
---
arch/x86/kernel/signal.c | 9 ---------
1 files changed, 0 insertions(+), 9 deletions(-)
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 1442516..f33d2e0 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -800,15 +800,6 @@ static void do_signal(struct pt_regs *regs)
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
- /*
- * Re-enable any watchpoints before delivering the
- * signal to user space. The processor register will
- * have been cleared if the watchpoint triggered
- * inside the kernel.
- */
- if (current->thread.debugreg7)
- set_debugreg(current->thread.debugreg7, 7);
-
/* Whee! Actually deliver the signal. */
if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
/*
--
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