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Merge remote-tracking branch 'remotes/thuth-gitlab/tags/pull-request-2021-06-21' into staging
* Documentation updates * Remove leading underscores from header guards * Display hexadecimal value with '0x' prefix # gpg: Signature made Mon 21 Jun 2021 11:33:53 BST # gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5 # gpg: issuer "thuth@redhat.com" # gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full] # gpg: aka "Thomas Huth <thuth@redhat.com>" [full] # gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full] # gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown] # Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5 * remotes/thuth-gitlab/tags/pull-request-2021-06-21: MAINTAINERS: Add qtest/arm-cpu-features.c to ARM TCG CPUs section fuzz: Display hexadecimal value with '0x' prefix Remove leading underscores from QEMU defines Update documentation to refer to new location for issues docs/tools/virtiofsd: Fix bad rst syntax docs/tools/virtiofsd.rst: Do not hard-code the QEMU binary name docs/interop/live-block-operations: Do not hard-code the QEMU binary name Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@@ -127,13 +127,15 @@ Interacting with a QEMU instance
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To show some example invocations of command-line, we will use the
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following invocation of QEMU, with a QMP server running over UNIX
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socket::
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socket:
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$ ./qemu-system-x86_64 -display none -no-user-config \
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-M q35 -nodefaults -m 512 \
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-blockdev node-name=node-A,driver=qcow2,file.driver=file,file.node-name=file,file.filename=./a.qcow2 \
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-device virtio-blk,drive=node-A,id=virtio0 \
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-monitor stdio -qmp unix:/tmp/qmp-sock,server=on,wait=off
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.. parsed-literal::
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$ |qemu_system| -display none -no-user-config -nodefaults \\
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-m 512 -blockdev \\
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node-name=node-A,driver=qcow2,file.driver=file,file.node-name=file,file.filename=./a.qcow2 \\
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-device virtio-blk,drive=node-A,id=virtio0 \\
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-monitor stdio -qmp unix:/tmp/qmp-sock,server=on,wait=off
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The ``-blockdev`` command-line option, used above, is available from
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QEMU 2.9 onwards. In the above invocation, notice the ``node-name``
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@@ -692,14 +694,16 @@ And start the destination QEMU (we already have the source QEMU running
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-- discussed in the section: `Interacting with a QEMU instance`_)
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instance, with the following invocation. (As noted earlier, for
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simplicity's sake, the destination QEMU is started on the same host, but
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it could be located elsewhere)::
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it could be located elsewhere):
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$ ./qemu-system-x86_64 -display none -no-user-config \
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-M q35 -nodefaults -m 512 \
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-blockdev node-name=node-TargetDisk,driver=qcow2,file.driver=file,file.node-name=file,file.filename=./target-disk.qcow2 \
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-device virtio-blk,drive=node-TargetDisk,id=virtio0 \
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-S -monitor stdio -qmp unix:./qmp-sock2,server=on,wait=off \
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-incoming tcp:localhost:6666
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.. parsed-literal::
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$ |qemu_system| -display none -no-user-config -nodefaults \\
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-m 512 -blockdev \\
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node-name=node-TargetDisk,driver=qcow2,file.driver=file,file.node-name=file,file.filename=./target-disk.qcow2 \\
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-device virtio-blk,drive=node-TargetDisk,id=virtio0 \\
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-S -monitor stdio -qmp unix:./qmp-sock2,server=on,wait=off \\
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-incoming tcp:localhost:6666
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Given the disk image chain on source QEMU::
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@@ -239,7 +239,7 @@ xattr-mapping Examples
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::
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-o xattrmap=":prefix:all::user.virtiofs.::bad:all:::"
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-o xattrmap=":prefix:all::user.virtiofs.::bad:all:::"
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This uses two rules, using : as the field separator;
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@@ -250,7 +250,8 @@ the host set.
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This is equivalent to the 'map' rule:
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::
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-o xattrmap=":map::user.virtiofs.:"
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-o xattrmap=":map::user.virtiofs.:"
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2) Prefix 'trusted.' attributes, allow others through
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@@ -277,7 +278,8 @@ through.
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This is equivalent to the 'map' rule:
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::
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-o xattrmap="/map/trusted./user.virtiofs./"
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-o xattrmap="/map/trusted./user.virtiofs./"
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3) Hide 'security.' attributes, and allow everything else
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@@ -298,13 +300,13 @@ Examples
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Export ``/var/lib/fs/vm001/`` on vhost-user UNIX domain socket
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``/var/run/vm001-vhost-fs.sock``:
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::
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.. parsed-literal::
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host# virtiofsd --socket-path=/var/run/vm001-vhost-fs.sock -o source=/var/lib/fs/vm001
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host# qemu-system-x86_64 \
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-chardev socket,id=char0,path=/var/run/vm001-vhost-fs.sock \
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-device vhost-user-fs-pci,chardev=char0,tag=myfs \
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-object memory-backend-memfd,id=mem,size=4G,share=on \
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-numa node,memdev=mem \
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...
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host# |qemu_system| \\
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-chardev socket,id=char0,path=/var/run/vm001-vhost-fs.sock \\
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-device vhost-user-fs-pci,chardev=char0,tag=myfs \\
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-object memory-backend-memfd,id=mem,size=4G,share=on \\
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-numa node,memdev=mem \\
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...
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guest# mount -t virtiofs myfs /mnt
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