| From ac53b14f3112aff8488aba7c366fc2002517add4 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Mon, 22 Jul 2019 20:47:06 +0200 |
| Subject: x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI |
| |
| From: Thomas Gleixner <tglx@linutronix.de> |
| |
| [ 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: 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 |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| 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 8e36f249646e2..904e18bb38c52 100644 |
| --- a/arch/x86/kernel/kgdb.c |
| +++ b/arch/x86/kernel/kgdb.c |
| @@ -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 |
| |
| -- |
| 2.20.1 |
| |