Re: [Qemu-devel] [PATCH 00/16] ahci: ncq cleanup, part 2

[John Snow <jsnow@redhat.com>]

On 06/26/2015 12:11 PM, Stefan Hajnoczi wrote:
> On Mon, Jun 22, 2015 at 08:20:59PM -0400, John Snow wrote:
>> requires: 1434470575-21625-1-git-send-email-jsnow@redhat.com 
>> 1435016308-6150-1-git-send-email-jsnow@redhat.com [PATCH v2 0/4]
>> ahci: misc fixes/tests for 2.4 [PATCH v2 00/16] ahci: ncq
>> cleanup, part 1
>> 
>> This chunk gets NCQ migration and and resume support working.
>> 
>> There's still some left to do, particularly around error
>> handling and FIS semantics, but this should get us most of the
>> way there.
>> 
>> There is one RFC bit in this patch, inside of Patch #1,
>> concerning how to handle truncating PRDTs that are too large --
>> it looks like we have attempted to address it in the past, and I
>> accidentally bumped up against it now. By actually trying to
>> consume the PRDs but ignoring any extra space they describe, I
>> would break ide-test.
>> 
>> I'll post logs later, but judging by the test text itself, we
>> don't seem to know what the right behavior is.
>> 
>> ________________________________________________________________________________
>>
>>
>> 
For convenience, this branch is available at:
>> https://github.com/jnsnow/qemu.git branch ahci-ncq-s2 
>> https://github.com/jnsnow/qemu/tree/ahci-ncq-s2
>> 
>> This version is tagged ahci-ncq-s2-v1: 
>> https://github.com/jnsnow/qemu/releases/tag/ahci-ncq-s2-v1
>> 
>> John Snow (16): ide: add limit to .prepare_buf() ahci: stash ncq
>> command ahci: assert is_ncq for process_ncq ahci: refactor
>> process_ncq_command ahci: factor ncq_finish out of ncq_cb ahci:
>> record ncq failures ahci: kick NCQ queue ahci: correct types in
>> NCQTransferState ahci: correct ncq sector count qtest/ahci:
>> halted NCQ test ahci: add cmd header to ncq transfer state ahci:
>> ncq migration ahci: add get_cmd_header helper ahci: Do not map
>> cmd_fis to generate response qtest/ahci: halted ncq migration
>> test ahci: fix sdb fis semantics
>> 
>> hw/ide/ahci.c     | 330
>> ++++++++++++++++++++++++++++++++---------------------- 
>> hw/ide/ahci.h     |   9 +- hw/ide/core.c     |  12 +- 
>> hw/ide/internal.h |   4 +- hw/ide/macio.c    |   2 +- 
>> hw/ide/pci.c      |   5 +- tests/ahci-test.c |  38 +++++-- 7
>> files changed, 252 insertions(+), 148 deletions(-)
> 
> I posted comments on a few patches.  The rest looks good.
> 

OK, I'm smooshing 6/7 and 12/13, and correcting issues where
appropriate. Will wait to feedback-feedback before I hit the send button.

--js