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Commit 949616cf authored by Tiejun Chen's avatar Tiejun Chen Committed by Benjamin Herrenschmidt
Browse files

powerpc/kgdb: Bail out of KGDB when we've been triggered 



We need to skip a breakpoint exception when it occurs after
a breakpoint has already been removed.

Signed-off-by: default avatarTiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 572b411c

arch/powerpc/kernel/kgdb.c

+15 −0
Original line number Original line Diff line number Diff line
@@ -101,6 +101,21 @@ static int computeSignal(unsigned int tt) 
	return SIGHUP;		/* default for things we don't know about */

	return SIGHUP;		/* default for things we don't know about */

}

}





/**

 *

 *	kgdb_skipexception - Bail out of KGDB when we've been triggered.

 *	@exception: Exception vector number

 *	@regs: Current &struct pt_regs.

 *

 *	On some architectures we need to skip a breakpoint exception when

 *	it occurs after a breakpoint has been removed.

 *

 */

int kgdb_skipexception(int exception, struct pt_regs *regs)

{

	return kgdb_isremovedbreak(regs->nip);

}



static int kgdb_call_nmi_hook(struct pt_regs *regs)

static int kgdb_call_nmi_hook(struct pt_regs *regs)

{

{

	kgdb_nmicallback(raw_smp_processor_id(), regs);

	kgdb_nmicallback(raw_smp_processor_id(), regs);