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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-06-25 00:18:59 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 13:10:24 +0200 |
| commit | af2b1c609ff52b6469d8e67696db98c93c348b0e (patch) | |
| tree | 794e4ebf8a9ed524cfbd01bc9e7f80fd110d3c2c /block/Makefile | |
| parent | d338c73c39a6ed0d07fe3bb07c7f12fff0dd237d (diff) | |
x86: add memory barriers to wrmsr
wrmsr is a special instruction which can have arbitrary system-wide
effects. We don't want the compiler to reorder it with respect to
memory operations, so make it a memory barrier.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'block/Makefile')
0 files changed, 0 insertions, 0 deletions