From: Fenghua Yu Date: Thu, 24 Oct 2013 01:30:12 +0000 (-0700) Subject: x86/apic: Disable I/O APIC before shutdown of the local APIC X-Git-Tag: v3.2.54~148 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8c3245c97490cb68ceaa983b5fce19055b4e331;p=pandora-kernel.git x86/apic: Disable I/O APIC before shutdown of the local APIC commit 522e66464467543c0d88d023336eec4df03ad40b upstream. In reboot and crash path, when we shut down the local APIC, the I/O APIC is still active. This may cause issues because external interrupts can still come in and disturb the local APIC during shutdown process. To quiet external interrupts, disable I/O APIC before shutdown local APIC. Signed-off-by: Fenghua Yu Link: http://lkml.kernel.org/r/1382578212-4677-1-git-send-email-fenghua.yu@intel.com [ I suppose the 'issue' is a hang during shutdown. It's a fine change nevertheless. ] Signed-off-by: Ingo Molnar [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- Reading git-diff-tree failed