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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-03-17 16:37:17 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-24 23:57:31 +0200 |
| commit | e2a81baf6604a2e08e10c7405b0349106f77c8af (patch) | |
| tree | 3eaf386316be1f499d92fae213493ec3d6b5b576 /block/elevator.c | |
| parent | aa380c82b83252754a8c11bfc92359bd87cbf710 (diff) | |
xen: support sysenter/sysexit if hypervisor does
64-bit Xen supports sysenter for 32-bit guests, so support its
use. (sysenter is faster than int $0x80 in 32-on-64.)
sysexit is still not supported, so we fake it up using iret.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'block/elevator.c')
0 files changed, 0 insertions, 0 deletions