| commit | 58f6e73b9c272f2f3064f104ae55379f8bb1ae61 | |
| author | Andrea Arcangeli <andrea@cpushare.com> | |
| Tue, 25 Dec 2007 08:58:52 +0000 (25 10:58 +0200) | ||
| committer | Avi Kivity <avi@qumranet.com> | |
| Tue, 25 Dec 2007 09:01:42 +0000 (25 11:01 +0200) | ||
| tree | 90f4e4b835325f1a389a31a79a482809d47e89a1 | treesnapshot (tar.gz zip) |
| parent | c2ecb82cd78a89893196a589e34ac26d738bbe01 | commitdiff |
kvm: external module: add true sched_in preempt notifier emulation
Instead of hacking the module source to check whether the preempt notifier
sched_in hook needs to be called, add a breakpoint on the caller of
schedule() which triggered sched_out. Use the Linux support for hardware
breakpoints to load the breakpoint when the process is switched to.
This greatly reduces the amount of hackery needed to support preempt
notifiers.
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Instead of hacking the module source to check whether the preempt notifier
sched_in hook needs to be called, add a breakpoint on the caller of
schedule() which triggered sched_out. Use the Linux support for hardware
breakpoints to load the breakpoint when the process is switched to.
This greatly reduces the amount of hackery needed to support preempt
notifiers.
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
| kvm/kernel/hack-module.awk | diffblobblamehistory | |
| kvm/kernel/preempt.c | diffblobblamehistory |