forked from luck/tmp_suning_uos_patched
9102330005
Address a long standing issue of booting with an initrd on an i386 numa system. Currently (and always) the numa kva area is mapped into low memory by finding the end of low memory and moving that mark down (thus creating space for the kva). The issue with this is that Grub loads initrds into this similar space so when the kernel check the initrd it finds it outside max_low_pfn and disables it (it thinks the initrd is not mapped into usable memory) thus initrd enabled kernels can't boot i386 numa :( My solution to the problem just converts the numa kva area to use the bootmem allocator to save it's area (instead of moving the end of low memory). Using bootmem allows the kva area to be mapped into more diverse addresses (not just the end of low memory) and enables the kva area to be mapped below the initrd if present. I have tested this patch on numaq(no initrd) and summit(initrd) i386 numa based systems. [akpm@osdl.org: cleanups] Signed-off-by: Keith Mannthey <kmannth@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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