linux/Documentation/x86/x86_64
Dave Hansen beb9147e95 x86/mm: Update memory map description to list hypervisor-reserved area
Peter Anvin says:

 > 0xffff880000000000 is the lowest usable address because we have
 > agreed to leave 0xffff800000000000-0xffff880000000000 for the
 > hypervisor or other non-OS uses.

Let's call this out in the documentation.

This came up during the kernel address sanitizer discussions
where it was proposed to use this area for other kernel things.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Link: http://lkml.kernel.org/r/20140918195606.841389D2@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-09-19 12:48:02 +02:00
..
00-INDEX
boot-options.txt Documentation: Update x86_64/boot-options.txt 2013-12-02 14:47:44 +01:00
cpu-hotplug-spec
fake-numa-for-cpusets
kernel-stacks x86: Always use irq stacks 2010-06-29 12:12:59 +02:00
machinecheck x86, mce: switch x86 machine check handler to Monarch election. 2009-06-03 14:45:12 -07:00
mm.txt x86/mm: Update memory map description to list hypervisor-reserved area 2014-09-19 12:48:02 +02:00
uefi.txt