linux-kernel - [PATCH] genirq: Set initial default irq affinity to just CPU0

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 24 Oct 2008 10:57:38 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Linus Torvalds <torvalds@...l.org>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	maxk@...lcomm.com, Andrew Morton <akpm@...l.org>,
	tglx@...utronix.de
Subject: [PATCH] genirq: Set initial default irq affinity to just CPU0

Commit 18404756765c713a0be4eb1082920c04822ce588 introduced a regression
on a subset of SMP based PPC systems whose interrupt controller only
allow setting an irq to a single processor.  The previous behavior
was only CPU0 was initially setup to get interrupts.  Revert back
to that behavior.

Signed-off-by: Kumar Gala <galak@...nel.crashing.org>
---
 kernel/irq/manage.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index c498a1b..728d36a 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -17,7 +17,7 @@
 
 #ifdef CONFIG_SMP
 
-cpumask_t irq_default_affinity = CPU_MASK_ALL;
+cpumask_t irq_default_affinity = CPU_MASK_CPU0;
 
 /**
  *	synchronize_irq - wait for pending IRQ handlers (on other CPUs)
-- 
1.5.5.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/