Merge remote-tracking branch 'remotes/awilliam/tags/vfio-fixes-20200106.0' into staging

[mirror_qemu.git] / qemu-deprecated.texi

diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi
index 97ba3cb88c53f60bd8bb7cda112cc6392d3c15b1..0968d37c745ac784ab44868f153cd1a3b4a1fc35 100644 (file)
--- 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)
@@ -373,6 +384,14 @@ guarantees must resolve the CPU model aliases using te
 ``alias-of'' field returned by the ``query-cpu-definitions'' QMP
 command.
 
+While those guarantees are kept, the return value of
+``query-cpu-definitions'' will have existing CPU model aliases
+point to a version that doesn't break runnability guarantees
+(specifically, version 1 of those CPU models).  In future QEMU
+versions, aliases will point to newer CPU model versions
+depending on the machine type, so management software must
+resolve CPU model aliases before starting a virtual machine.
+
 
 @node Recently removed features
 @appendix Recently removed features