From: Paul Mackerras Date: Sat, 10 Sep 2005 11:13:13 +0000 (+1000) Subject: [PATCH] ppc32: support hotplug cpu on powermacs X-Git-Tag: v2.6.14-rc1~142 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31139971b3dc9fbb2e8a8572fb81e6e8470f363a;p=pandora-kernel.git [PATCH] ppc32: support hotplug cpu on powermacs This allows cpus to be off-lined on 32-bit SMP powermacs. When a cpu is off-lined, it is put into sleep mode with interrupts disabled. It can be on-lined again by asserting its soft-reset pin, which is connected to a GPIO pin. With this I can off-line the second cpu in my dual G4 powermac, which means that I can then suspend the machine (the suspend/resume code refuses to suspend if more than one cpu is online, and making it cope with multiple cpus is surprisingly messy). Signed-off-by: Paul Mackerras Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed