From: Benjamin Herrenschmidt Date: Wed, 7 May 2008 00:00:56 +0000 (+1000) Subject: [POWERPC] Document when printk is useable X-Git-Tag: v2.6.26-rc2~16^2~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=24d9649574fbe591fdfa6b00893d4096f513e539;p=pandora-kernel.git [POWERPC] Document when printk is useable When debugging early boot problems, it's common to sprinkle printk's all over the place. However, on 64-bit powerpc, this can lead to memory corruption if done too early due to the PACA pointer and lockdep core not being initialized. This adds some comments to early_setup() that document when it is safe to do so in order to save time for whoever has to debug that stuff next. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- Reading git-diff-tree failed