x86/paravirt: finish change from lazy cpu to context switch start/end
Impact: fix lazy context switch API
Pass the previous and next tasks into the context switch start
end calls, so that the called functions can properly access the
task state (esp in end_context_switch, in which the next task
is not yet completely current).
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 7115e60..e8a9aaf 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -428,7 +428,7 @@
* done before math_state_restore, so the TS bit is up
* to date.
*/
- arch_end_context_switch();
+ arch_end_context_switch(next_p);
/*
* Switch FS and GS.