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x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI

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[ Upstream commit 2591bc4e8d70b4e1330d327fb7e3921f4e070a51 ]

apic->send_IPI_allbutself() takes a vector number as argument.

APIC_DM_NMI is clearly not a vector number. It's defined to 0x400 which is
outside the vector space.

Use NMI_VECTOR instead as that's what it is intended to be.

Fixes: 82da3ff89d ("x86: kgdb support")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190722105218.855189979@linutronix.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Thomas Gleixner 2019-07-22 20:47:06 +02:00 • committed by Greg Kroah-Hartman
parent 7ed623cd6f
commit 7e820c2d27
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/kgdb.c
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@ -438,7 +438,7 @@ static void kgdb_disable_hw_debug(struct pt_regs *regs)
*/
void kgdb_roundup_cpus(unsigned long flags)
{
apic->send_IPI_allbutself(APIC_DM_NMI);
apic->send_IPI_allbutself(NMI_VECTOR);
}
#endif