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Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with buf
From: |
John Snow |
Subject: |
Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write |
Date: |
Tue, 05 May 2015 12:26:50 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 05/05/2015 12:19 PM, Paolo Bonzini wrote:
>
>
> On 05/05/2015 17:48, John Snow wrote:
>> I specifically left things that alter control flow using hex nibbles --
>> such as the FIS packets, PRD tables, and all other existing tests. I
>> only use the b64 encoding for raw data patterns, which don't really need
>> to be debugged. Either they match or they don't: any particular values
>> are uninteresting.
>
> To some extent: they may still be interesting for stuff like IDENTIFY.
>
You got me there.
>> Any future test can be switched to/from hex/b64 by just altering
>> "mem{read,write}()" to "buf{read,write}()" as desired. I specifically
>> opted not to alter *all* qtest IO for this very reason.
>>
>> Does that help? :)
>
> Yes. We could also switch unconditionally to b64, but keep hex in the
> qtest-log.
>
Hmm, there's a thought. Though b64 for a handful of bytes seems
definitely likely to be slower. I am comfortable having two
implementations at the moment.
(Mostly because I don't feel like testing what the threshold for which
strings should be sent with what method is. Too much effort for qtest.)
hex-always in the log is a good idea, though. I may do that.
>> If you're not opposed to the rest of this series, I will send a v2
>> including the hex batching optimization.
>
> This series is okay. I just wanted some clarifications and ideas for
> future work.
>
> Paolo
>
Just trying to make you happy ;)
--js
- [Qemu-devel] [PATCH v2 2/4] qtest: Add base64 encoded read/write, (continued)
- [Qemu-devel] [PATCH v2 2/4] qtest: Add base64 encoded read/write, John Snow, 2015/05/01
- [Qemu-devel] [PATCH v2 1/4] qtest: allow arbitrarily long sends, John Snow, 2015/05/01
- [Qemu-devel] [PATCH v2 3/4] qtest: add memset to qtest protocol, John Snow, 2015/05/01
- [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write, John Snow, 2015/05/01
- Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write, Paolo Bonzini, 2015/05/01
- Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write, John Snow, 2015/05/01
- Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write, John Snow, 2015/05/01
- Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write, Paolo Bonzini, 2015/05/05
- Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write, John Snow, 2015/05/05
- Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write, Paolo Bonzini, 2015/05/05
- Re: [Qemu-devel] [PATCH v2 4/4] libqos/ahci: Swap memread/write with bufread/write,
John Snow <=