lkml.org 
[lkml]   [2020]   [Jan]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.19 488/639] x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI
Date
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


\
 
 \ /
  Last update: 2020-01-24 12:27    [W:1.835 / U:6.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site