cputlb: add tlb_flush_by_mmuidx async routines

This converts the remaining TLB flush routines to use async work when
detecting a cross-vCPU flush. The only minor complication is having to
serialise the var_list of MMU indexes into a form that can be punted
to an asynchronous job.

The pending_tlb_flush field on QOM's CPU structure also becomes a
bitfield rather than a boolean.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index e80bf7a..3e61c88 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -407,7 +407,7 @@ struct CPUState {
      * avoid potential races. The aim of the flag is to avoid
      * unnecessary flushes.
      */
-    bool pending_tlb_flush;
+    uint16_t pending_tlb_flush;
 };
 
 QTAILQ_HEAD(CPUTailQ, CPUState);