From: Cliff Wickman Date: Tue, 16 Jun 2009 21:43:40 +0000 (-0500) Subject: x86: correct the conversion of EFI memory types X-Git-Tag: v2.6.31-rc1~97^2~14 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2a7147640a54eb812c8ab5f3ee4424b92db4856;p=pandora-kernel.git x86: correct the conversion of EFI memory types This patch causes all the EFI_RESERVED_TYPE memory reservations to be recorded in the e820 table as type E820_RESERVED. (This patch replaces one called 'x86: vendor reserved memory type'. This version has been discussed a bit with Peter and Yinghai but not given a final opinion.) Without this patch EFI_RESERVED_TYPE memory reservations may be marked usable in the e820 table. There may be a collision between kernel use and some reserver's use of this memory. (An example use of this functionality is the UV system, which will access extremely large areas of memory with a memory engine that allows a user to address beyond the processor's range. Such areas are reserved in the EFI table by the BIOS. Some loaders have a restricted number of entries possible in the e820 table, hence the need to record the reservations in the unrestricted EFI table.) The call to do_add_efi_memmap() is only made if "add_efi_memmap" is specified on the kernel command line. Signed-off-by: Cliff Wickman Signed-off-by: H. Peter Anvin --- Reading git-diff-tree failed