From: H. Peter Anvin Date: Sat, 28 Mar 2009 20:53:26 +0000 (-0700) Subject: x86, setup: ACPI 3, BIOS workaround for E820-probing code X-Git-Tag: v2.6.30-rc1~414^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c549e71d073a6e9a4847497344db28a784061455;p=pandora-kernel.git x86, setup: ACPI 3, BIOS workaround for E820-probing code Impact: ACPI 3 spec compliance, BIOS bug workaround The ACPI 3 spec added another field to the E820 buffer -- which is backwards incompatible, since it contains a validity bit. Furthermore, there has been at least one report of a BIOS which assumes that the buffer it is pointed at is the same buffer as for the previous E820 call. Therefore, read the data into a temporary buffer and copy the standard part of it if and only if the valid bit is set. Signed-off-by: H. Peter Anvin --- Reading git-diff-tree failed