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Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

# gpg: Signature made Fri 20 Dec 2019 10:25:11 GMT
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  virtio-blk: fix out-of-bounds access to bitmap in notify_guest_bh
  docs: fix rst syntax errors in unbuilt docs
  virtio-blk: deprecate SCSI passthrough

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2020-01-03 17:18:08 +00:00
commit f0dcfddece
5 changed files with 27 additions and 15 deletions
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6
docs/arm-cpu-features.rst
View File

@ -41,9 +41,9 @@ CPU type is possible with the `query-cpu-model-expansion` QMP command.
Below are some examples where `scripts/qmp/qmp-shell` (see the top comment
block in the script for usage) is used to issue the QMP commands.
(1) Determine which CPU features are available for the `max` CPU type
(Note, we started QEMU with qemu-system-aarch64, so `max` is
implementing the ARMv8-A reference manual in this case)::
1. Determine which CPU features are available for the `max` CPU type
(Note, we started QEMU with qemu-system-aarch64, so `max` is
implementing the ARMv8-A reference manual in this case)::
(QEMU) query-cpu-model-expansion type=full model={"name":"max"}
{ "return": {

4
docs/virtio-net-failover.rst
View File

@ -1,6 +1,6 @@
========================
======================================
QEMU virtio-net standby (net_failover)
========================
======================================
This document explains the setup and usage of virtio-net standby feature which
is used to create a net_failover pair of devices.

19
docs/virtio-pmem.rst
View File

@ -27,17 +27,18 @@ virtio pmem usage
-----------------
A virtio pmem device backed by a memory-backend-file can be created on
the QEMU command line as in the following example:
the QEMU command line as in the following example::
-object memory-backend-file,id=mem1,share,mem-path=./virtio_pmem.img,size=4G
-device virtio-pmem-pci,memdev=mem1,id=nv1
-object memory-backend-file,id=mem1,share,mem-path=./virtio_pmem.img,size=4G
-device virtio-pmem-pci,memdev=mem1,id=nv1
where:
- "object memory-backend-file,id=mem1,share,mem-path=<image>, size=<image size>"
creates a backend file with the specified size.
where:
- "device virtio-pmem-pci,id=nvdimm1,memdev=mem1" creates a virtio pmem
pci device whose storage is provided by above memory backend device.
- "object memory-backend-file,id=mem1,share,mem-path=<image>, size=<image size>"
creates a backend file with the specified size.
- "device virtio-pmem-pci,id=nvdimm1,memdev=mem1" creates a virtio pmem
pci device whose storage is provided by above memory backend device.
Multiple virtio pmem devices can be created if multiple pairs of "-object"
and "-device" are provided.
@ -50,7 +51,7 @@ memory backing has to be added via 'object_add'; afterwards, the virtio
pmem device can be added via 'device_add'.
For example, the following commands add another 4GB virtio pmem device to
the guest:
the guest::
(qemu) object_add memory-backend-file,id=mem2,share=on,mem-path=virtio_pmem2.img,size=4G
(qemu) device_add virtio-pmem-pci,id=virtio_pmem2,memdev=mem2

2
hw/block/dataplane/virtio-blk.c
View File

@ -67,7 +67,7 @@ static void notify_guest_bh(void *opaque)
memset(s->batch_notify_vqs, 0, sizeof(bitmap));
for (j = 0; j < nvqs; j += BITS_PER_LONG) {
unsigned long bits = bitmap[j];
unsigned long bits = bitmap[j / BITS_PER_LONG];
while (bits != 0) {
unsigned i = j + ctzl(bits);

11
qemu-deprecated.texi
View File

@ -284,6 +284,17 @@ spec you can use the ``-cpu rv64gcsu,priv_spec=v1.9.1`` command line argument.
@section Device options
@subsection Emulated device options
@subsubsection -device virtio-blk,scsi=on|off (since 5.0.0)
The virtio-blk SCSI passthrough feature is a legacy VIRTIO feature. VIRTIO 1.0
and later do not support it because the virtio-scsi device was introduced for
full SCSI support. Use virtio-scsi instead when SCSI passthrough is required.
Note this also applies to ``-device virtio-blk-pci,scsi=on|off'', which is an
alias.
@subsection Block device options
@subsubsection "backing": "" (since 2.12.0)