[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [block PATCH v2 0/3] AHCI device fixes
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [block PATCH v2 0/3] AHCI device fixes |
Date: |
Thu, 13 Nov 2014 10:04:39 +0000 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Fri, Oct 31, 2014 at 04:03:36PM -0400, John Snow wrote:
> This is a v2 patch series that collects patches 3, 4 and 5
> from the v1 series that was only partially merged.
>
> This series, as a subset, generally cleans up the usage and
> handling of the scatter-gather list implementation in QEMU
> that interacts with the PRDT (Physical Region Descriptor Table)
> in AHCI.
>
> We also repair a small oversight with PIO transfers.
>
> This series currently applies cleanly to stefanha's block staging
> tree, but can be trivially merged to master.
>
> v2:
> - Reset io_buffer_offset to 0 at the beginning of ide_exec_cmd,
> which will reset it for PIO I/O and all ATAPI commands.
> There was an oversight in V1 where we would use junk values for
> PACKET IDENTIFY if it was not the first command.
>
> - Adjust the prepare_buf() callback to return, simply, the number
> of bytes it was able to prepare, or -1 on error. This resolves
> an ambiguity around the nature of its return code meaning
> "no sectors" or "no bytes" which led to bad error pathways.
>
> John Snow (3):
> ide: repair PIO transfers for cases where nsector > 1
> ahci: unify sglist preparation
> ide: Correct handling of malformed/short PRDTs
>
> hw/ide/ahci.c | 33 ++++++++++++++++++++++++++-------
> hw/ide/core.c | 14 ++++++++++++--
> hw/ide/internal.h | 13 +++++++------
> hw/ide/macio.c | 7 ++++++-
> hw/ide/pci.c | 27 +++++++++++++++++++++------
> 5 files changed, 72 insertions(+), 22 deletions(-)
>
> --
> 1.9.3
>
>
Thanks, applied to my block tree:
https://github.com/stefanha/qemu/commits/block
Stefan
pgp264i0QwkWj.pgp
Description: PGP signature