From: Xiao Guangrong Date: Thu, 20 Aug 2009 12:23:11 +0000 (+0800) Subject: x86: Fix system crash when loading with "reservetop" parameter X-Git-Tag: v2.6.32-rc1~680^2~3^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8126dec32738421afa362114337331337b4be17f;p=pandora-kernel.git x86: Fix system crash when loading with "reservetop" parameter The system will die if the kernel is booted with "reservetop" parameter, in present code, parse "reservetop" parameter after early_ioremap_init(), and some function still use early_ioremap() after it. The problem is, "reservetop" parameter can modify 'FIXADDR_TOP', then the virtual address got by early_ioremap() is base on old 'FIXADDR_TOP', but the page mapping is base on new 'FIXADDR_TOP', it will occur page fault, and the IDT is not prepare yet, so, the system is dead. So, put parse_early_param() in the front of early_ioremap_init() in this patch. Signed-off-by: Xiao Guangrong Cc: yinghai@kernel.org Cc: Andrew Morton LKML-Reference: <4A8D402F.4080805@cn.fujitsu.com> Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed