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| author | KONRAD Frederic <fred.konrad@greensocs.com> | 2017-02-23 18:29:08 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2017-02-24 10:32:45 +0000 |
| commit | 8d4e9146b3568022ea5730d92841345d41275d66 (patch) | |
| tree | 76c0c83af2e41e05956a2e29f1a60dc89208c5d3 /qemu-options.hx | |
| parent | 20937143145b8f5a4194e5c407731ba38797864e (diff) | |
| download | qemu-8d4e9146b3568022ea5730d92841345d41275d66.zip qemu-8d4e9146b3568022ea5730d92841345d41275d66.tar.gz qemu-8d4e9146b3568022ea5730d92841345d41275d66.tar.bz2 | |
tcg: add options for enabling MTTCG
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>
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 9936cf3..bf458f8 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -95,6 +95,26 @@ STEXI Select CPU model (@code{-cpu help} for list and additional feature selection) ETEXI +DEF("accel", HAS_ARG, QEMU_OPTION_accel, + "-accel [accel=]accelerator[,thread=single|multi]\n" + " select accelerator ('-accel help for list')\n" + " thread=single|multi (enable multi-threaded TCG)", QEMU_ARCH_ALL) +STEXI +@item -accel @var{name}[,prop=@var{value}[,...]] +@findex -accel +This is used to enable an accelerator. Depending on the target architecture, +kvm, xen, or tcg can be available. By default, tcg is used. If there is more +than one accelerator specified, the next one is used if the previous one fails +to initialize. +@table @option +@item thread=single|multi +Controls number of TCG threads. When the TCG is multi-threaded there will be one +thread per vCPU therefor taking advantage of additional host cores. The default +is to enable multi-threading where both the back-end and front-ends support it and +no incompatible TCG features have been enabled (e.g. icount/replay). +@end table +ETEXI + DEF("smp", HAS_ARG, QEMU_OPTION_smp, "-smp [cpus=]n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]\n" " set the number of CPUs to 'n' [default=1]\n" |