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[Qemu-devel] [PATCH 0/5]
From: |
Nicholas A. Bellinger |
Subject: |
[Qemu-devel] [PATCH 0/5] |
Date: |
Wed, 24 Nov 2010 00:39:56 -0800 |
From: Nicholas Bellinger <address@hidden>
Greetings QEMU SCSI / BLOCK folks,
This series adds rebased support for the hw/scsi-bsg.c backstore for scsi-bus
compatible HBA emulation in QEMU-KVM on Linux hosts supporting the BSG driver
against current mainline qemu-kvm.git/master code.
This patch is available from the scsi-bsg branch in the megasas/scsi friendly
QEMU-KVM tree at:
http://git.kernel.org/?p=virt/kvm/nab/qemu-kvm.git;a=shortlog;h=refs/heads/megasas-upstream-v1
which includes Hannes's recent patch series posted recently against mainline
v0.13.0 here:
Re: [Qemu-devel] [PATCH] Megasas HBA emulation and SCSI update v.2
http://lists.gnu.org/archive/html/qemu-devel/2010-11/msg02018.html
Note that in order for BSG I/O to function using vectored AIO a kernel patch to
linux/block/bsg.c:bsg_map_hdr() is currently required running on a bit paired
user/kernel enviroment. The kernel patch in question is here:
http://marc.info/?l=linux-scsi&m=127649585524598&w=2
The first three patches involve updating block code to support the BSG
backstore for scsi-bsg.
The forth patch adds the minor changes to hw/scsi-bus.c and hw/scsi-disk.c in
order to
function with scsi-bsg.
And the fifth patch adds the main hw/scsi-bsg.c logic necessary to run the new
struct
SCSIDeviceInfo and for BSG AIO using struct iovec and paio_submit_len() to
function.
The scsi-bsg.c code has been refactored to follow the modern
SCSIDeviceInfo->alloc_req_iov()
and incoming struct iovec * memory for underlying SCSIRequest SGLs
So far this has been tested with v2 8708EM2 HBA Emulation on 0.13.0 on a .37-rc2
KVM host with TCM_Loop FILEIO backstores into a Debian Lenny v2.6.26 x86_64
KVM guest with XFS filesystem mounts.
Signed-off-by: Nicholas A. Bellinger <address@hidden>
Nicholas Bellinger (5):
block: Add top level BSG support
block: Add BSG qemu_open() in block/raw.c:raw_open()
block: Add paio_submit_len() non sector sized AIO
scsi: Add BSG checks into scsi-bus and scsi-disk
scsi-bsg: Add initial support for BSG based SCSIDeviceInfo
Makefile.objs | 2 +-
block.c | 7 +-
block.h | 1 +
block/raw-posix-aio.h | 3 +
block/raw-posix.c | 65 +++++-
block/raw.c | 21 ++
block_int.h | 6 +
hw/scsi-bsg.c | 720 +++++++++++++++++++++++++++++++++++++++++++++++++
hw/scsi-bus.c | 3 +-
hw/scsi-disk.c | 5 +
posix-aio-compat.c | 29 ++
11 files changed, 855 insertions(+), 7 deletions(-)
create mode 100644 hw/scsi-bsg.c
- [Qemu-devel] [PATCH 0/5],
Nicholas A. Bellinger <=