tree 45490ee3f3a16a220a554c8bcf40530253fc6be0
parent 891686188f69d330f7eeeec8e6642ccfb7453106
author Hollis Blanchard <hollisb@us.ibm.com> 1228254714 -0600
committer Avi Kivity <avi@redhat.com> 1230735309 +0200

powerpc/44x: declare tlb_44x_index for use in C code

KVM currently ignores the host's round robin TLB eviction selection, instead
maintaining its own TLB state and its own round robin index. However, by
participating in the normal 44x TLB selection, we can drop the alternate TLB
processing in KVM. This results in a significant performance improvement,
since that processing currently must be done on *every* guest exit.

Accordingly, KVM needs to be able to access and increment tlb_44x_index.
(KVM on 440 cannot be a module, so there is no need to export this symbol.)

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>