xen: fix allocation and use of large ldts

Browse source

When the ldt gets to more than 1 page in size, the kernel uses vmalloc
to allocate it.  This means that:

 - when making the ldt RO, we must update the pages in both the vmalloc
   mapping and the linear mapping to make sure there are no RW aliases.

 - we need to use arbitrary_virt_to_machine to compute the machine addr
   for each update

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Jeremy Fitzhardinge 2008-07-27 08:45:02 -07:00 • committed by Ingo Molnar

parent 64f53a0492

commit a05d2ebab2

1 changed files with 41 additions and 10 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

51

arch/x86/xen/enlighten.c

View file