Jan Beulich
2006-Feb-08 12:52 UTC
[Xen-devel] [PATCH] x86-64 linux: call evtchn_do_upcall on irq stack and adjust irqcount
Especially in the light of the recent no-idle-tick preparations in native x86-64 it is important that exit_idle() has proper state available. For this reason, the processor''s irqcount must be adjusted within upcalls, and for consistency and similarity with native code this call should also execute on the processor''s irq stack. At once the patch slightly simplifies the pre-existing code by copying %rdi into %rsp instead of adding 8 to %rsp, and by using %rdi instead of %rsp (avoiding a needless resource dependency) for storing the event mask. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel