diff options
| -rw-r--r-- | docs/arm-cpu-features.rst | 6 | ||||
| -rw-r--r-- | docs/virtio-net-failover.rst | 4 | ||||
| -rw-r--r-- | docs/virtio-pmem.rst | 19 | ||||
| -rw-r--r-- | hw/block/dataplane/virtio-blk.c | 2 | ||||
| -rw-r--r-- | qemu-deprecated.texi | 11 |
5 files changed, 27 insertions, 15 deletions
diff --git a/docs/arm-cpu-features.rst b/docs/arm-cpu-features.rst index 1b367e22e1..9b537a75e6 100644 --- a/docs/arm-cpu-features.rst +++ b/docs/arm-cpu-features.rst @@ -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": { diff --git a/docs/virtio-net-failover.rst b/docs/virtio-net-failover.rst index 22f64c7bc8..6002dc5d96 100644 --- a/docs/virtio-net-failover.rst +++ b/docs/virtio-net-failover.rst @@ -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. diff --git a/docs/virtio-pmem.rst b/docs/virtio-pmem.rst index e77881b26f..4bf5d00443 100644 --- a/docs/virtio-pmem.rst +++ b/docs/virtio-pmem.rst @@ -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 diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c index 119906a5fe..1b52e8159c 100644 --- a/hw/block/dataplane/virtio-blk.c +++ b/hw/block/dataplane/virtio-blk.c @@ -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); diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi index 97ba3cb88c..09d0ca069e 100644 --- a/qemu-deprecated.texi +++ b/qemu-deprecated.texi @@ -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) |