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Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG
From: |
Alex Bennée |
Subject: |
Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG |
Date: |
Tue, 12 Apr 2016 12:48:47 +0100 |
User-agent: |
mu4e 0.9.17; emacs 25.0.92.6 |
Sergey Fedorov <address@hidden> writes:
> On 05/04/16 18:32, Alex Bennée wrote:
>> diff --git a/qemu-options.hx b/qemu-options.hx
>> index a770086..4eca704 100644
>> --- a/qemu-options.hx
>> +++ b/qemu-options.hx
>> @@ -3224,6 +3224,20 @@ Attach to existing xen domain.
>> xend will use this when starting QEMU (XEN only).
>> ETEXI
>>
>> +DEF("tcg", HAS_ARG, QEMU_OPTION_tcg, \
>> + "-tcg [mttcg=on|off] control TCG options\n", QEMU_ARCH_ALL)
>> +STEXI
>> address@hidden -tcg
>> address@hidden -tcg
>> address@hidden @option
>> address@hidden mttcg=[on|off]
>> +Control multi-threaded TCG. By default QEMU will enable multi-threaded
>> +emulation for front/back-end combinations that are known to work. The
>> +user may enable it against the defaults however odd guest behaviour
>> +may occur.
>> address@hidden table
>> +ETEXI
>
> Maybe we'd better use existing qemu accelerator framework and introduce
> "-machine accel=mttcg" option?
My worry would be breaking existing code which assumes kvm | tcg. We
will want to enable mttcg by default for combos that work without having
to tweak tooling that already uses the -machine options.
--
Alex Bennée
- [Qemu-devel] [RFC v2 00/11] Base enabling patches for MTTCG, Alex Bennée, 2016/04/05
- [Qemu-devel] [RFC v2 05/11] tcg: protect TBContext with tb_lock., Alex Bennée, 2016/04/05
- [Qemu-devel] [RFC v2 09/11] tcg: add kick timer for single-threaded vCPU emulation, Alex Bennée, 2016/04/05
- [Qemu-devel] [RFC v2 06/11] target-arm/psci.c: wake up sleeping CPUs, Alex Bennée, 2016/04/05
- [Qemu-devel] [RFC v2 02/11] cpus: make all_vcpus_paused() return bool, Alex Bennée, 2016/04/05
- [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Alex Bennée, 2016/04/05
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Sergey Fedorov, 2016/04/11
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG,
Alex Bennée <=
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Peter Maydell, 2016/04/12
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Sergey Fedorov, 2016/04/12
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, KONRAD Frederic, 2016/04/12
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Sergey Fedorov, 2016/04/12
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Pavel Dovgalyuk, 2016/04/12
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Sergey Fedorov, 2016/04/12
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Alex Bennée, 2016/04/12
- Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Sergey Fedorov, 2016/04/12
Re: [Qemu-devel] [RFC v2 08/11] tcg: add options for enabling MTTCG, Sergey Fedorov, 2016/04/12