From: Ingo Molnar Date: Thu, 21 Feb 2008 10:04:11 +0000 (+0100) Subject: x86: fix spontaneous reboot with allyesconfig bzImage X-Git-Tag: v2.6.25-rc4~159^2~10 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88f3aec7afd9ae3e6f6d221801996b69aad1e3a4;p=pandora-kernel.git x86: fix spontaneous reboot with allyesconfig bzImage recently the 64-bit allyesconfig bzImage kernel started spontaneously rebooting during early bootup. after a few fun hours spent with early init debugging, it turns out that we've got this rather annoying limit on the size of the kernel image: #define KERNEL_TEXT_SIZE (40*1024*1024) which limit my vmlinux just happened to pass: text data bss dec hex filename 29703744 4222751 8646224 42572719 2899baf vmlinux 40 MB is 42572719 bytes, so my vmlinux was just 1.5% above this limit :-/ So it happily crashed right in head_64.S, which - as we all know - is the most debuggable code in the whole architecture ;-) So increase the limit to allow an up to 128MB kernel image to be mapped. (should anyone be that crazy or lazy) We have a full 4K of pagetable (level2_kernel_pgt) allocated for these mappings already, so there's no RAM overhead and the limit was rather pointless and arbitrary. Signed-off-by: Ingo Molnar --- Reading git-diff-tree failed