diff options
author | Jeremy Fitzhardinge <jeremy@goop.org> | 2009-02-02 16:55:42 -0500 |
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committer | H. Peter Anvin <hpa@linux.intel.com> | 2009-02-04 19:59:04 -0500 |
commit | 5393744b71ce797f1b1546fafaed127fc50c2b61 (patch) | |
tree | a974975e907b5e2830721c521965a53c34c10c8b /arch/xtensa/lib | |
parent | 383414322b3b3ced0cbc146801e0cc6c60a6c5f4 (diff) |
xen: make direct versions of irq_enable/disable/save/restore to common code
Now that x86-64 has directly accessible percpu variables, it can also
implement the direct versions of these operations, which operate on a
vcpu_info structure directly embedded in the percpu area.
In fact, the 64-bit versions are more or less identical, and so can be
shared. The only two differences are:
1. xen_restore_fl_direct takes its argument in eax on 32-bit, and rdi on 64-bit.
Unfortunately it isn't possible to directly refer to the 2nd lsb of rdi directly
(as you can with %ah), so the code isn't quite as dense.
2. check_events needs to variants to save different registers.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/xtensa/lib')
0 files changed, 0 insertions, 0 deletions