[tip:x86/apic] x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI

tip-bot for Thomas Gleixner
2019-07-25T14:20:43Z

Commit-ID: 2591bc4e8d70b4e1330d327fb7e3921f4e070a51
Gitweb: https://git.kernel.org/tip/2591bc4e8d70b4e1330d327fb7e3921f4e070a51
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Mon, 22 Jul 2019 20:47:06 +0200
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Thu, 25 Jul 2019 16:11:56 +0200

x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI

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: 82da3ff89dc2 ("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

---
arch/x86/kernel/kgdb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 23297ea64f5f..a53dfb09880f 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -416,7 +416,7 @@ static void kgdb_disable_hw_debug(struct pt_regs *regs)
*/
void kgdb_roundup_cpus(void)
{
- apic->send_IPI_allbutself(APIC_DM_NMI);
+ apic->send_IPI_allbutself(NMI_VECTOR);
}
#endif