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tcg: add options for enabling MTTCG

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We know there will be cases where MTTCG won't work until additional work
is done in the front/back ends to support. It will however be useful to
be able to turn it on.

As a result MTTCG will default to off unless the combination is
supported. However the user can turn it on for the sake of testing.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
[AJB: move to -accel tcg,thread=multi|single, defaults]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
KONRAD Frederic 2017-02-23 18:29:08 +00:00 • committed by Alex Bennée
parent 2093714314
commit 8d4e9146b3
6 changed files with 161 additions and 1 deletions
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9
include/qom/cpu.h
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@ -415,6 +415,15 @@ extern struct CPUTailQ cpus;
extern __thread CPUState *current_cpu;
/**
* qemu_tcg_mttcg_enabled:
* Check whether we are running MultiThread TCG or not.
*
* Returns: %true if we are in MTTCG mode %false otherwise.
*/
extern bool mttcg_enabled;
#define qemu_tcg_mttcg_enabled() (mttcg_enabled)
/**
* cpu_paging_enabled:
* @cpu: The CPU whose state is to be inspected.