Alex Bennée ca759f9e38 tcg: enable MTTCG by default for ARM on x86 hosts ... This enables the multi-threaded system emulation by default for ARMv7 and ARMv8 guests using the x86_64 TCG backend. This is because on the guest side: - The ARM translate.c/translate-64.c have been converted to - use MTTCG safe atomic primitives - emit the appropriate barrier ops - The ARM machine has been updated to - hold the BQL when modifying shared cross-vCPU state - defer powerctl changes to async safe work All the host backends support the barrier and atomic primitives but need to provide same-or-better support for normal load/store operations. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Acked-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>		2017-02-24 10:32:46 +00:00
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tcg-target.h	tcg: enable MTTCG by default for ARM on x86 hosts	2017-02-24 10:32:46 +00:00
tcg-target.inc.c	tcg/i386: Always use TZCNT when available	2017-01-17 12:02:08 -08:00