AcoSail/kernel_optimize_test
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bca23dba76
kernel_optimize_test/arch/x86
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H. Peter Anvin bca23dba76 x86, setup: revert ACPI 3 E820 extended attributes support 
Remove ACPI 3 E820 extended memory attributes support.  At least one
vendor actively set all the flags to zero, but left ECX on return at
24.  This bug may be present in other BIOSes.

The breakage functionally means the ACPI 3 flags are probably
completely useless, and that no OS any time soon is going to rely on
their existence.  Therefore, drop support completely.  We may want to
revisit this question in the future, if we find ourselves actually
needing the flags.

This reverts all or part of the following checkins:

     cd670599b7
     c549e71d07

However, retain the part from the latter commit that copies e820 into
a temporary buffer; that is an unrelated BIOS workaround.  Put in a
comment to explain that part.

See https://bugzilla.redhat.com/show_bug.cgi?id=499396 for some
additional information.

[ Impact: detect all memory on affected machines ]

Reported-by: Thomas J. Baker <tjb@unh.edu>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Len Brown <len.brown@intel.com>
Cc: Chuck Ebbert <cebbert@redhat.com>
Cc: Kyle McMartin <kmcmartin@redhat.com>
Cc: Matt Domsch <matt_domsch@dell.com>
2009-05-22 11:14:02 -07:00
..
boot x86, setup: revert ACPI 3 E820 extended attributes support 2009-05-22 11:14:02 -07:00
configs
crypto
ia32 Separate out common fstatat code into vfs_fstatat 2009-04-20 23:02:51 -04:00
include/asm x86: Fix performance regression caused by paravirt_ops on native kernels 2009-05-15 20:07:42 +02:00
kernel x86: DMI match for the Sony VGN-Z540N as it needs BIOS reboot 2009-05-22 09:11:30 +02:00
kvm KVM: SVM: Remove port 80 passthrough 2009-05-11 14:40:51 +03:00
lguest clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
lib
math-emu
mm x86-64: finish cleanup_highmaps()'s job wrt. _brk_end 2009-05-07 21:51:34 -07:00
oprofile x86, 32-bit: fix kernel_trap_sp() 2009-05-12 00:39:52 +02:00
pci x86/PCI: don't bother with root quirks if _CRS is used 2009-04-22 15:06:29 -07:00
power
vdso x86: gettimeofday() vDSO: fix segfault when tv == NULL 2009-04-30 12:31:45 +02:00
video
xen x86: Fix performance regression caused by paravirt_ops on native kernels 2009-05-15 20:07:42 +02:00
Kconfig x86: Fix performance regression caused by paravirt_ops on native kernels 2009-05-15 20:07:42 +02:00
Kconfig.cpu x86: disable X86_PTRACE_BTS for now 2009-04-15 23:15:14 +02:00
Kconfig.debug
Makefile x86, kbuild: make "make install" not depend on vmlinux 2009-04-17 22:43:12 +02:00
Makefile_32.cpu