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Re: [Qemu-devel] [PATCH 0/2] Implement YIELD to yield in ARM and Thumb t
From: |
Alex Züpke |
Subject: |
Re: [Qemu-devel] [PATCH 0/2] Implement YIELD to yield in ARM and Thumb translators |
Date: |
Fri, 26 Jun 2015 16:35:37 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
Am 26.06.2015 um 16:04 schrieb Peter Maydell:
> Ping?
OK for me.
Best regards
Alex
>
> thanks
> -- PMM
>
> On 15 June 2015 at 19:49, Peter Maydell <address@hidden> wrote:
>> This patchset makes the ARM and Thumb encodings of the YIELD hint
>> instruction in the ARM cause the TCG CPU to yield control back
>> to the top level loop. This brings them into line with the A64
>> encoding which already did this.
>>
>> Patch 1 splits out DISAS_YIELD from DISAS_WFE, because although
>> we currently implement them both the same way they're semantically
>> different, and in future we might well make WFE do something
>> else. (In particular when I was reviewing Greg's patches that
>> proposed enabling trap-to-EL2-on-WFE I didn't notice that we
>> would also have ended up trapping on YIELD !)
>>
>>
>> Peter Maydell (2):
>> target-arm: Split DISAS_YIELD from DISAS_WFE
>> target-arm: Implement YIELD insn to yield in ARM and Thumb translators
>>
>> target-arm/helper.h | 1 +
>> target-arm/op_helper.c | 12 ++++++++++++
>> target-arm/translate-a64.c | 6 ++++++
>> target-arm/translate.c | 7 +++++++
>> target-arm/translate.h | 1 +
>> 5 files changed, 27 insertions(+)