linux-kernel - [PATCH] powerpc/smp: Do not disable IPI interrupts during suspend

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, 20 Jul 2012 20:47:01 +0800
From:	Zhao Chenhui <chenhui.zhao@...escale.com>
To:	<linuxppc-dev@...ts.ozlabs.org>, <galak@...nel.crashing.org>
CC:	<linux-kernel@...r.kernel.org>, <leoli@...escale.com>
Subject: [PATCH] powerpc/smp: Do not disable IPI interrupts during suspend

During suspend, all interrupts including IPI will be disabled. In this case,
the suspend process will hang in SMP. To prevent this, pass the flag
IRQF_NO_SUSPEND when requesting IPI irq.

Signed-off-by: Zhao Chenhui <chenhui.zhao@...escale.com>
Signed-off-by: Li Yang <leoli@...escale.com>
---
 arch/powerpc/kernel/smp.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index fecb038..d26bbf8 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -171,7 +171,7 @@ int smp_request_message_ipi(int virq, int msg)
 	}
 #endif
 	err = request_irq(virq, smp_ipi_action[msg],
-			  IRQF_PERCPU | IRQF_NO_THREAD,
+			  IRQF_PERCPU | IRQF_NO_THREAD | IRQF_NO_SUSPEND,
 			  smp_ipi_name[msg], 0);
 	WARN(err < 0, "unable to request_irq %d for %s (rc %d)\n",
 		virq, smp_ipi_name[msg], err);
-- 
1.6.4.1


--
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/