June 2023 - Devel - libvirt List Archives

[PATCH v2] nodedev: transient mdev update on nodeDeviceCreateXML
by Boris Fiuczynski 17 Jul '23

17 Jul '23

Update the optional mdev attributes by running an mdevctl update on a new created nodedev object representing an mdev. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2143158 Signed-off-by: Boris Fiuczynski <fiuczy(a)linux.ibm.com> --- src/node_device/node_device_udev.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c index 4c37ec3189..fce4212728 100644 --- a/src/node_device/node_device_udev.c +++ b/src/node_device/node_device_udev.c @@ -1757,12 +1757,20 @@ nodeStateCleanup(void) static int udevHandleOneDevice(struct udev_device *device) { + virNodeDevCapType dev_cap_type; const char *action = udev_device_get_action(device); VIR_DEBUG("udev action: '%s': %s", action, udev_device_get_syspath(device)); - if (STREQ(action, "add") || STREQ(action, "change")) - return udevAddOneDevice(device); + if (STREQ(action, "add") || STREQ(action, "change")) { + int ret = udevAddOneDevice(device); + if (ret == 0 && + udevGetDeviceType(device, &dev_cap_type) == 0 && + dev_cap_type == VIR_NODE_DEV_CAP_MDEV) + if (nodeDeviceUpdateMediatedDevices() < 0) + VIR_WARN("mdevctl failed to update mediated devices"); + return ret; + } if (STREQ(action, "remove")) return udevRemoveOneDevice(device); -- 2.41.0

2 9

[PATCH] spec: Do not disable some systemd units of newly split package
by Martin Kletzander 14 Jul '23

14 Jul '23

Since virtproxyd was split into libvirt-daemon-proxy package it can happen that, in case a distribution has such systemd preset, when installing this package, already pre-enabled and configured units like -tls.socket and -tcp.socket will get disabled. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2210058 Fixes: 5358618b1cd0afc126aed313249bf2134731665f Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com> --- This is more like an RFC as I would really like to know what to really do in this case. What happens, basically, is that if you have libvirt-daemon-9.0.0 and set up virtproxyd-tls.socket for example and then upgrade to anything newer, then the package libvirt-daemon-proxy will get installed. The %post action calls "%libvirt_daemon_systemd_post_inet virtproxyd" which calls "%systemd_post with all virtproxyd units. What %systemd_post is supposed to do is reset units to a preset state in the case of package installation, but not during upgrade. However the libvirt-daemon-proxy package did not exist on the system before, so this action is not an update, but an installation. If no preset is mentioned for a unit then `systemctl preset` does not change anything. However some distros might have a catch-all preset "disable *" for some reason, I guess based on an example in the documentation, and there is no way to override an already configured preset, you can only enable or disable a unit in a preset. That all means than it can happen that you enable virtproxyd-tcp.socket, for example, then update your system and find that it is disabled. There are various ways to deal with this, but I don't see any one that would 100% satisfy me with regards to all the issues and at the same time could be implemented "soon enough" given libvirt already had three releases with the libvirt-daemon-proxy split. libvirt.spec.in | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/libvirt.spec.in b/libvirt.spec.in index 1f77cd90b772..50f521b7ce88 100644 --- a/libvirt.spec.in +++ b/libvirt.spec.in @@ -1592,7 +1592,13 @@ fi %post daemon-proxy %if %{with_modular_daemons} -%libvirt_daemon_systemd_post_inet virtproxyd +# Since this was split into a different package, a transparent update for the +# virtproxyd units could actually disable an already configured ones +# (e.g. virtproxyd-tls.socket) as %systemd_post runs `systemctl preset` if this +# is an installation (and is skipped on update). So skip this step for those +# that need an extra setup to work since they will most likely not be preset to +# enabled, but that is up to the point of the distribution. +%libvirt_daemon_systemd_post virtproxyd %endif %preun daemon-proxy -- 2.41.0

4 16

[PATCH] qemu: Support removable for scsi disk
by Han Han 10 Jul '23

10 Jul '23

Allow //disk/target@removable for scsi disk devices, since QEMU has support the removable attribute for scsi-hd device from v0.14.0[1]. [1]: 419e691f8e: scsi-disk: Allow overriding SCSI INQUIRY removable bit Signed-off-by: Han Han <hhan(a)redhat.com> --- docs/formatdomain.rst | 2 +- src/conf/domain_validate.c | 5 +++-- src/qemu/qemu_command.c | 6 ++++-- ...gs => disk-device-removable.x86_64-latest.args} | 14 +++++++++----- ...ice-removable.xml => disk-device-removable.xml} | 5 +++++ tests/qemuxml2argvtest.c | 2 +- 6 files changed, 23 insertions(+), 11 deletions(-) rename tests/qemuxml2argvdata/{disk-usb-device-removable.x86_64-latest.args => disk-device-removable.x86_64-latest.args} (70%) rename tests/qemuxml2argvdata/{disk-usb-device-removable.xml => disk-device-removable.xml} (80%) diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst index c3526439bf..676e4b9fd3 100644 --- a/docs/formatdomain.rst +++ b/docs/formatdomain.rst @@ -3094,7 +3094,7 @@ paravirtualized driver is specified via the ``disk`` element. CDROM or Floppy disk), the value can be either "open" or "closed", defaults to "closed". NB, the value of ``tray`` could be updated while the domain is running. The optional attribute ``removable`` sets the removable flag for USB - disks, and its value can be either "on" or "off", defaulting to "off". + or SCSI disks, and its value can be either "on" or "off", defaulting to "off". The optional attribute ``rotation_rate`` sets the rotation rate of the storage for disks on a SCSI, IDE, or SATA bus. Values in the range 1025 to 65534 are used to indicate rotational media speed in revolutions per minute. diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c index 80d6a2ffd9..e7122f6297 100644 --- a/src/conf/domain_validate.c +++ b/src/conf/domain_validate.c @@ -881,9 +881,10 @@ virDomainDiskDefValidate(const virDomainDef *def, } if (disk->removable != VIR_TRISTATE_SWITCH_ABSENT && - disk->bus != VIR_DOMAIN_DISK_BUS_USB) { + disk->bus != VIR_DOMAIN_DISK_BUS_USB && + !(disk->bus == VIR_DOMAIN_DISK_BUS_SCSI && disk->device == VIR_DOMAIN_DISK_DEVICE_DISK)) { virReportError(VIR_ERR_XML_ERROR, "%s", - _("removable is only valid for usb disks")); + _("removable is only valid for usb or scsi disks")); return -1; } diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 72363238b8..5ec912ddee 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1781,10 +1781,12 @@ qemuBuildDiskDeviceProps(const virDomainDef *def, if (disk->device == VIR_DOMAIN_DISK_DEVICE_LUN) { driver = "scsi-block"; } else { - if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) + if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) { driver = "scsi-cd"; - else + } else { driver = "scsi-hd"; + removable = disk->removable; + } /* qemu historically used the name of -drive as one of the device * ids in the Vital Product Data Device Identification page if diff --git a/tests/qemuxml2argvdata/disk-usb-device-removable.x86_64-latest.args b/tests/qemuxml2argvdata/disk-device-removable.x86_64-latest.args similarity index 70% rename from tests/qemuxml2argvdata/disk-usb-device-removable.x86_64-latest.args rename to tests/qemuxml2argvdata/disk-device-removable.x86_64-latest.args index c5bfd8e8e0..106f7b9ce2 100644 --- a/tests/qemuxml2argvdata/disk-usb-device-removable.x86_64-latest.args +++ b/tests/qemuxml2argvdata/disk-device-removable.x86_64-latest.args @@ -27,13 +27,17 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \ -no-shutdown \ -boot strict=on \ -device '{"driver":"piix3-usb-uhci","id":"usb","bus":"pci.0","addr":"0x1.0x2"}' \ --blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}' \ +-device '{"driver":"virtio-scsi-pci","id":"scsi0","bus":"pci.0","addr":"0x2"}' \ +-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-3-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"node-name":"libvirt-3-format","read-only":false,"driver":"raw","file":"libvirt-3-storage"}' \ +-device '{"driver":"ide-hd","bus":"ide.0","unit":0,"drive":"libvirt-3-format","id":"ide0-0-0","bootindex":1}' \ +-blockdev '{"driver":"file","filename":"/tmp/usbdisk.img","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-2-format","read-only":false,"driver":"raw","file":"libvirt-2-storage"}' \ --device '{"driver":"ide-hd","bus":"ide.0","unit":0,"drive":"libvirt-2-format","id":"ide0-0-0","bootindex":1}' \ --blockdev '{"driver":"file","filename":"/tmp/usbdisk.img","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ +-device '{"driver":"usb-storage","bus":"usb.0","port":"1","drive":"libvirt-2-format","id":"usb-disk0","removable":true}' \ +-blockdev '{"driver":"file","filename":"/tmp/scsidisk.img","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"driver":"raw","file":"libvirt-1-storage"}' \ --device '{"driver":"usb-storage","bus":"usb.0","port":"1","drive":"libvirt-1-format","id":"usb-disk0","removable":true}' \ +-device '{"driver":"scsi-hd","bus":"scsi0.0","channel":0,"scsi-id":0,"lun":1,"device_id":"drive-scsi0-0-0-1","drive":"libvirt-1-format","id":"scsi0-0-0-1","removable":true}' \ -audiodev '{"id":"audio1","driver":"none"}' \ --device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x2"}' \ +-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x3"}' \ -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ -msg timestamp=on diff --git a/tests/qemuxml2argvdata/disk-usb-device-removable.xml b/tests/qemuxml2argvdata/disk-device-removable.xml similarity index 80% rename from tests/qemuxml2argvdata/disk-usb-device-removable.xml rename to tests/qemuxml2argvdata/disk-device-removable.xml index 927a8e8b3e..9400c84863 100644 --- a/tests/qemuxml2argvdata/disk-usb-device-removable.xml +++ b/tests/qemuxml2argvdata/disk-device-removable.xml @@ -22,6 +22,11 @@ <source file='/tmp/usbdisk.img'/> <target dev='sda' bus='usb' removable='on'/> </disk> + <disk type='file' device='disk'> + <source file='/tmp/scsidisk.img'/> + <target dev='sdb' bus='scsi' removable='on'/> + </disk> + <controller type='scsi' index='0' model='virtio-scsi'/> <memballoon model='virtio'/> </devices> </domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index d914d8cbea..d6a9ab865d 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1227,7 +1227,7 @@ mymain(void) DO_TEST_CAPS_LATEST_PARSE_ERROR("disk-device-lun-type-invalid"); DO_TEST_CAPS_LATEST_PARSE_ERROR("disk-attaching-partition-nosupport"); DO_TEST_CAPS_LATEST("disk-usb-device"); - DO_TEST_CAPS_LATEST("disk-usb-device-removable"); + DO_TEST_CAPS_LATEST("disk-device-removable"); DO_TEST_CAPS_LATEST_PARSE_ERROR("disk-usb-pci"); DO_TEST_CAPS_LATEST("disk-scsi"); DO_TEST_CAPS_LATEST("disk-scsi-device-auto"); -- 2.40.1

2 4

[PATCH v2 0/5] Migration deprecated parts
by Juan Quintela 07 Jul '23

07 Jul '23

On this v2: - dropped -incoming <uri> deprecation Paolo came with a better solution using keyvalues. - skipped field is already ready for next pull request, so dropped. - dropped the RFC bits, nermal PATCH. - Assessed all the review comments. - Added indentation of migration.json. - Used the documentation pointer to substitute block migration. Please review. [v1] Hi this series describe the migration parts that have to be deprecated. - It is an rfc because I doubt that I did the deprecation process right. Hello Markus O:-) - skipped field: It is older than me, I have never know what it stands for. As far as I know it has always been zero. - inc/blk migrate command options. They are only used by block migration (that I deprecate on the following patch). And they are really bad. grep must_remove_block_options. - block migration. block jobs, whatever they are called this week are way more flexible. Current code works, but we broke it here and there, and really nobody has stand up to maintain it. It is quite contained and can be left there. Is anyone really using it? - old compression method. It don't work. See last try from Lukas to make a test that works reliabely. I failed with the same task years ago. It is really slow, and if compression is good for you, multifd + zlib is going to perform/compress way more. I don't know what to do with this code, really. * Remove it for this release? It don't work, and haven't work reliabely in quite a few time. * Deprecate it and remove in another couple of releases, i.e. normal deprecation. * Ideas? - -incoming <uri> if you need to set parameters (multifd cames to mind, and preempt has the same problem), you really needs to use defer. So what should we do here? This part is not urget, because management apps have a working option that are already using "defer", and the code simplifacation if we remove it is not so big. So we can leave it until 9.0 or whatever we think fit. What do you think? Later, Juan. Juan Quintela (5): migration: Use proper indentation for migration.json migration: migrate 'inc' command option is deprecated. migration: migrate 'blk' command option is deprecated. migration: Deprecate block migration migration: Deprecate old compression method docs/about/deprecated.rst | 32 ++++++ qapi/migration.json | 203 ++++++++++++++++++++++++-------------- migration/block.c | 3 + migration/migration.c | 11 +++ migration/options.c | 22 ++++- 5 files changed, 198 insertions(+), 73 deletions(-) base-commit: 5f9dd6a8ce3961db4ce47411ed2097ad88bdf5fc prerequisite-patch-id: 99c8bffa9428838925e330eb2881bab476122579 prerequisite-patch-id: 77ba427fd916aeb395e95aa0e7190f84e98e96ab prerequisite-patch-id: 9983d46fa438d7075a37be883529e37ae41e4228 prerequisite-patch-id: 207f7529924b12dcb57f6557d6db6f79ceb2d682 prerequisite-patch-id: 5ad1799a13845dbf893a28a202b51a6b50d95d90 prerequisite-patch-id: c51959aacd6d65ee84fcd4f1b2aed3dd6f6af879 prerequisite-patch-id: 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prerequisite-patch-id: 8b80819a5b41866ad1aa2f5c171845a475b04484 prerequisite-patch-id: 38dcab15193713c2a59f5ac6b648aff53e6a36aa prerequisite-patch-id: cc186287e3a5e027d3c6bb405a0e80a0036fab33 -- 2.40.1

4 10

[libvirt PATCH v2 0/4] Enable asynchronous teardown
by Boris Fiuczynski 03 Jul '23

03 Jul '23

Update capabilities for QEMU 8.1 on s390x, add a new capability async-teardown and make use of it when running on s390x hosts to improve memory reclaiming. v2: - switch to use on/off on the QEMU command line - added configuration management of the feature to the domain XML Boris Fiuczynski (3): qemu: add run-with async-teardown capability qemu: allow use of async teardown in domain qemu: enable asynchronous teardown on s390x hosts Shalini Chellathurai Saroja (1): tests: add capabilities for QEMU 8.1.0 on s390x docs/formatdomain.rst | 6 + src/conf/domain_conf.c | 22 + src/conf/domain_conf.h | 1 + src/conf/schemas/domaincommon.rng | 9 + src/qemu/qemu_capabilities.c | 2 + src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 20 + src/qemu/qemu_domain.c | 14 + src/qemu/qemu_validate.c | 9 + tests/domaincapsdata/qemu_8.1.0.s390x.xml | 285 + .../caps_8.1.0_s390x.replies | 34594 ++++++++++++++++ .../qemucapabilitiesdata/caps_8.1.0_s390x.xml | 3719 ++ .../caps_8.1.0_x86_64.xml | 1 + .../qemuhotplug-base-ccw-live+ccw-virtio.xml | 2 +- ...ith-2-ccw-virtio+ccw-virtio-1-explicit.xml | 1 - ...with-2-ccw-virtio+ccw-virtio-1-reverse.xml | 2 +- ...otplug-base-ccw-live-with-2-ccw-virtio.xml | 2 +- ...-with-ccw-virtio+ccw-virtio-2-explicit.xml | 2 +- ...-ccw-live-with-ccw-virtio+ccw-virtio-2.xml | 2 +- ...uhotplug-base-ccw-live-with-ccw-virtio.xml | 2 +- .../qemuhotplug-base-ccw-live.xml | 2 +- .../async-teardown.x86_64-latest.args | 37 + tests/qemuxml2argvdata/async-teardown.xml | 31 + .../balloon-ccw-deflate.s390x-latest.args | 3 +- .../console-sclp.s390x-latest.args | 7 +- .../console-virtio-ccw.s390x-latest.args | 9 +- .../cpu-s390-features.s390x-latest.args | 1 + .../cpu-s390-zEC12.s390x-latest.args | 1 + ...default-video-type-s390x.s390x-latest.args | 5 +- .../disk-error-policy-s390x.s390x-latest.args | 7 +- .../disk-virtio-ccw-many.s390x-latest.args | 11 +- .../disk-virtio-ccw.s390x-latest.args | 7 +- .../disk-virtio-s390-zpci.s390x-latest.args | 7 +- .../fs9p-ccw.s390x-latest.args | 11 +- ...tdev-scsi-vhost-scsi-ccw.s390x-latest.args | 9 +- ...tdev-subsys-mdev-vfio-ap.s390x-latest.args | 5 +- ...ubsys-mdev-vfio-ccw-boot.s390x-latest.args | 5 +- ...dev-subsys-mdev-vfio-ccw.s390x-latest.args | 5 +- ...o-zpci-autogenerate-fids.s390x-latest.args | 11 +- ...o-zpci-autogenerate-uids.s390x-latest.args | 11 +- ...v-vfio-zpci-autogenerate.s390x-latest.args | 7 +- ...dev-vfio-zpci-boundaries.s390x-latest.args | 15 +- ...vfio-zpci-ccw-memballoon.s390x-latest.args | 9 +- ...io-zpci-multidomain-many.s390x-latest.args | 35 +- .../hostdev-vfio-zpci.s390x-latest.args | 7 +- .../input-virtio-ccw.s390x-latest.args | 11 +- ...othreads-virtio-scsi-ccw.s390x-latest.args | 9 +- .../launch-security-s390-pv.s390x-latest.args | 7 +- ...chine-aeskeywrap-off-cap.s390x-latest.args | 3 +- ...hine-aeskeywrap-off-caps.s390x-latest.args | 3 +- ...achine-aeskeywrap-on-cap.s390x-latest.args | 3 +- ...chine-aeskeywrap-on-caps.s390x-latest.args | 3 +- ...chine-deakeywrap-off-cap.s390x-latest.args | 3 +- ...hine-deakeywrap-off-caps.s390x-latest.args | 3 +- ...achine-deakeywrap-on-cap.s390x-latest.args | 3 +- ...chine-deakeywrap-on-caps.s390x-latest.args | 3 +- ...achine-keywrap-none-caps.s390x-latest.args | 3 +- .../machine-keywrap-none.s390x-latest.args | 3 +- ...machine-loadparm-hostdev.s390x-latest.args | 5 +- ...multiple-disks-nets-s390.s390x-latest.args | 15 +- ...achine-loadparm-net-s390.s390x-latest.args | 7 +- .../machine-loadparm-s390.s390x-latest.args | 5 +- .../net-virtio-ccw.s390x-latest.args | 11 +- ...low-bogus-usb-controller.s390x-latest.args | 11 +- ...390-allow-bogus-usb-none.s390x-latest.args | 11 +- ...0-async-teardown-disabled.s390x-6.0.0.args | 35 + ...-async-teardown-disabled.s390x-latest.args | 36 + .../s390-async-teardown-disabled.xml | 24 + ...async-teardown-no-attrib.s390x-latest.args | 36 + .../s390-async-teardown-no-attrib.xml | 24 + .../s390-async-teardown.s390x-6.0.0.err | 1 + .../s390-async-teardown.s390x-latest.args | 36 + .../qemuxml2argvdata/s390-async-teardown.xml | 24 + ...t-cpu-kvm-ccw-virtio-2.7.s390x-latest.args | 3 +- ...t-cpu-kvm-ccw-virtio-4.2.s390x-latest.args | 5 +- ...t-cpu-tcg-ccw-virtio-2.7.s390x-latest.args | 3 +- ...t-cpu-tcg-ccw-virtio-4.2.s390x-latest.args | 3 +- ...no-async-teardown-autogen.s390x-6.0.0.args | 32 + ...o-async-teardown-autogen.s390x-latest.args | 33 + .../s390-no-async-teardown-autogen.xml | 18 + .../s390-panic-missing.s390x-latest.args | 7 +- .../s390-panic-no-address.s390x-latest.args | 7 +- .../s390-serial-2.s390x-latest.args | 5 +- .../s390-serial-console.s390x-latest.args | 3 +- .../s390-serial.s390x-latest.args | 3 +- .../s390x-ccw-graphics.s390x-latest.args | 23 +- .../s390x-ccw-headless.s390x-latest.args | 17 +- .../vhost-vsock-ccw-auto.s390x-latest.args | 7 +- .../vhost-vsock-ccw-iommu.s390x-latest.args | 7 +- .../vhost-vsock-ccw-iommu.xml | 3 + .../vhost-vsock-ccw.s390x-latest.args | 7 +- .../video-virtio-gpu-ccw.s390x-latest.args | 9 +- .../virtio-rng-ccw.s390x-latest.args | 11 +- .../watchdog-diag288.s390x-latest.args | 7 +- tests/qemuxml2argvtest.c | 9 + .../async-teardown.x86_64-latest.xml | 44 + .../default-video-type-s390x.s390x-latest.xml | 3 + .../disk-virtio-s390-zpci.s390x-latest.xml | 3 + ...stdev-scsi-vhost-scsi-ccw.s390x-latest.xml | 3 + ...stdev-subsys-mdev-vfio-ap.s390x-latest.xml | 3 + ...subsys-mdev-vfio-ccw-boot.s390x-latest.xml | 3 + ...tdev-subsys-mdev-vfio-ccw.s390x-latest.xml | 3 + ...io-zpci-autogenerate-fids.s390x-latest.xml | 3 + ...io-zpci-autogenerate-uids.s390x-latest.xml | 3 + ...ev-vfio-zpci-autogenerate.s390x-latest.xml | 3 + ...tdev-vfio-zpci-boundaries.s390x-latest.xml | 3 + ...-vfio-zpci-ccw-memballoon.s390x-latest.xml | 3 + ...fio-zpci-multidomain-many.s390x-latest.xml | 3 + .../hostdev-vfio-zpci.s390x-latest.xml | 3 + .../input-virtio-ccw.s390x-latest.xml | 3 + ...iothreads-disk-virtio-ccw.s390x-latest.xml | 3 + ...iothreads-virtio-scsi-ccw.s390x-latest.xml | 3 + .../machine-loadparm-hostdev.s390x-latest.xml | 3 + ...-multiple-disks-nets-s390.s390x-latest.xml | 3 + ...90-async-teardown-disabled.s390x-6.0.0.xml | 36 + ...0-async-teardown-disabled.s390x-latest.xml | 36 + ...-async-teardown-no-attrib.s390x-latest.xml | 36 + .../s390-async-teardown.s390x-latest.xml | 36 + ...lt-cpu-kvm-ccw-virtio-2.7.s390x-latest.xml | 3 + ...lt-cpu-kvm-ccw-virtio-4.2.s390x-latest.xml | 3 + ...lt-cpu-tcg-ccw-virtio-2.7.s390x-latest.xml | 3 + ...lt-cpu-tcg-ccw-virtio-4.2.s390x-latest.xml | 3 + .../s390-defaultconsole.s390x-latest.xml | 3 + ...-no-async-teardown-autogen.s390x-6.0.0.xml | 25 + ...no-async-teardown-autogen.s390x-latest.xml | 28 + .../s390-panic-missing.s390x-latest.xml | 3 + .../s390-panic-no-address.s390x-latest.xml | 3 + .../s390-panic.s390x-latest.xml | 3 + .../s390-serial-2.s390x-latest.xml | 3 + .../s390-serial-console.s390x-latest.xml | 3 + .../s390-serial.s390x-latest.xml | 3 + .../s390x-ccw-graphics.s390x-latest.xml | 3 + .../s390x-ccw-headless.s390x-latest.xml | 3 + .../vhost-vsock-ccw-auto.s390x-latest.xml | 3 + .../vhost-vsock-ccw.s390x-latest.xml | 3 + ...video-virtio-gpu-ccw-auto.s390x-latest.xml | 3 + .../video-virtio-gpu-ccw.s390x-latest.xml | 3 + tests/qemuxml2xmltest.c | 8 + 138 files changed, 39671 insertions(+), 197 deletions(-) create mode 100644 tests/domaincapsdata/qemu_8.1.0.s390x.xml create mode 100644 tests/qemucapabilitiesdata/caps_8.1.0_s390x.replies create mode 100644 tests/qemucapabilitiesdata/caps_8.1.0_s390x.xml create mode 100644 tests/qemuxml2argvdata/async-teardown.x86_64-latest.args create mode 100644 tests/qemuxml2argvdata/async-teardown.xml create mode 100644 tests/qemuxml2argvdata/s390-async-teardown-disabled.s390x-6.0.0.args create mode 100644 tests/qemuxml2argvdata/s390-async-teardown-disabled.s390x-latest.args create mode 100644 tests/qemuxml2argvdata/s390-async-teardown-disabled.xml create mode 100644 tests/qemuxml2argvdata/s390-async-teardown-no-attrib.s390x-latest.args create mode 100644 tests/qemuxml2argvdata/s390-async-teardown-no-attrib.xml create mode 100644 tests/qemuxml2argvdata/s390-async-teardown.s390x-6.0.0.err create mode 100644 tests/qemuxml2argvdata/s390-async-teardown.s390x-latest.args create mode 100644 tests/qemuxml2argvdata/s390-async-teardown.xml create mode 100644 tests/qemuxml2argvdata/s390-no-async-teardown-autogen.s390x-6.0.0.args create mode 100644 tests/qemuxml2argvdata/s390-no-async-teardown-autogen.s390x-latest.args create mode 100644 tests/qemuxml2argvdata/s390-no-async-teardown-autogen.xml create mode 100644 tests/qemuxml2xmloutdata/async-teardown.x86_64-latest.xml create mode 100644 tests/qemuxml2xmloutdata/s390-async-teardown-disabled.s390x-6.0.0.xml create mode 100644 tests/qemuxml2xmloutdata/s390-async-teardown-disabled.s390x-latest.xml create mode 100644 tests/qemuxml2xmloutdata/s390-async-teardown-no-attrib.s390x-latest.xml create mode 100644 tests/qemuxml2xmloutdata/s390-async-teardown.s390x-latest.xml create mode 100644 tests/qemuxml2xmloutdata/s390-no-async-teardown-autogen.s390x-6.0.0.xml create mode 100644 tests/qemuxml2xmloutdata/s390-no-async-teardown-autogen.s390x-latest.xml -- 2.41.0

4 11

[PATCH] os-posix: Allow 'chroot' via '-run-with' and deprecate the old '-chroot' option
by Thomas Huth 30 Jun '23

30 Jun '23

We recently introduced "-run-with" for options that influence the runtime behavior of QEMU. This option has the big advantage that it can group related options (so that it is easier for the users to spot them) and that the options become introspectable via QMP this way. So let's start moving more switches into this option group, starting with "-chroot" now. Signed-off-by: Thomas Huth <thuth(a)redhat.com> --- docs/about/deprecated.rst | 5 +++++ os-posix.c | 35 ++++++++++++++++++++++++++++++++++- util/async-teardown.c | 21 --------------------- qemu-options.hx | 18 +++++++++++++----- 4 files changed, 52 insertions(+), 27 deletions(-) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 0743459862..1cf53b86ce 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -116,6 +116,11 @@ Use "whpx" (on Windows) or "hvf" (on macOS) instead. Use ``-run-with async-teardown=on`` instead. +``-chroot`` (since 8.1) +''''''''''''''''''''''' + +Use ``-run-with chroot=dir`` instead. + ``-singlestep`` (since 8.1) ''''''''''''''''''''''''''' diff --git a/os-posix.c b/os-posix.c index 90ea71725f..0ae1fb2347 100644 --- a/os-posix.c +++ b/os-posix.c @@ -38,6 +38,7 @@ #include "qemu/cutils.h" #include "qemu/config-file.h" #include "qemu/option.h" +#include "qemu/module.h" #ifdef CONFIG_LINUX #include <sys/prctl.h> @@ -148,6 +149,7 @@ int os_parse_cmd_args(int index, const char *optarg) } break; case QEMU_OPTION_chroot: + warn_report("option is deprecated, use '-run-with chroot=...' instead"); chroot_dir = optarg; break; case QEMU_OPTION_daemonize: @@ -158,18 +160,25 @@ int os_parse_cmd_args(int index, const char *optarg) case QEMU_OPTION_asyncteardown: init_async_teardown(); break; +#endif case QEMU_OPTION_run_with: { + const char *str; QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("run-with"), optarg, false); if (!opts) { exit(1); } +#if defined(CONFIG_LINUX) if (qemu_opt_get_bool(opts, "async-teardown", false)) { init_async_teardown(); } +#endif + str = qemu_opt_get(opts, "chroot"); + if (str) { + chroot_dir = str; + } break; } -#endif default: return -1; } @@ -348,3 +357,27 @@ int os_mlock(void) return -ENOSYS; #endif } + +static QemuOptsList qemu_run_with_opts = { + .name = "run-with", + .head = QTAILQ_HEAD_INITIALIZER(qemu_run_with_opts.head), + .desc = { +#if defined(CONFIG_LINUX) + { + .name = "async-teardown", + .type = QEMU_OPT_BOOL, + }, +#endif + { + .name = "chroot", + .type = QEMU_OPT_STRING, + }, + { /* end of list */ } + }, +}; + +static void register_teardown(void) +{ + qemu_add_opts(&qemu_run_with_opts); +} +opts_init(register_teardown); diff --git a/util/async-teardown.c b/util/async-teardown.c index 3ab19c8740..62cdeb0f20 100644 --- a/util/async-teardown.c +++ b/util/async-teardown.c @@ -12,9 +12,6 @@ */ #include "qemu/osdep.h" -#include "qemu/config-file.h" -#include "qemu/option.h" -#include "qemu/module.h" #include <dirent.h> #include <sys/prctl.h> #include <sched.h> @@ -147,21 +144,3 @@ void init_async_teardown(void) clone(async_teardown_fn, new_stack_for_clone(), CLONE_VM, NULL); sigprocmask(SIG_SETMASK, &old_signals, NULL); } - -static QemuOptsList qemu_run_with_opts = { - .name = "run-with", - .head = QTAILQ_HEAD_INITIALIZER(qemu_run_with_opts.head), - .desc = { - { - .name = "async-teardown", - .type = QEMU_OPT_BOOL, - }, - { /* end of list */ } - }, -}; - -static void register_teardown(void) -{ - qemu_add_opts(&qemu_run_with_opts); -} -opts_init(register_teardown); diff --git a/qemu-options.hx b/qemu-options.hx index b57489d7ca..f49d4c0e3c 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4670,11 +4670,12 @@ ERST #ifndef _WIN32 DEF("chroot", HAS_ARG, QEMU_OPTION_chroot, \ - "-chroot dir chroot to dir just before starting the VM\n", + "-chroot dir chroot to dir just before starting the VM (deprecated)\n", QEMU_ARCH_ALL) #endif SRST ``-chroot dir`` + Deprecated, use '-run-with chroot=...' instead. Immediately before starting guest execution, chroot to the specified directory. Especially useful in combination with -runas. ERST @@ -4861,13 +4862,16 @@ SRST This option is deprecated and should no longer be used. The new option ``-run-with async-teardown=on`` is a replacement. ERST +#endif +#ifdef CONFIG_POSIX DEF("run-with", HAS_ARG, QEMU_OPTION_run_with, - "-run-with async-teardown[=on|off]\n" - " misc QEMU process lifecycle options\n" - " async-teardown=on enables asynchronous teardown\n", + "-run-with [async-teardown=on|off][,chroot=dir]\n" + " Set miscellaneous QEMU process lifecycle options:\n" + " async-teardown=on enables asynchronous teardown (Linux only)\n" + " chroot=dir chroot to dir just before starting the VM\n", QEMU_ARCH_ALL) SRST -``-run-with`` +``-run-with [async-teardown=on|off][,chroot=dir]`` Set QEMU process lifecycle options. ``async-teardown=on`` enables asynchronous teardown. A new process called @@ -4880,6 +4884,10 @@ SRST performed correctly. This only works if the cleanup process is not forcefully killed with SIGKILL before the main QEMU process has terminated completely. + + ``chroot=dir`` can be used for doing a chroot to the specified directory + immediately before starting the guest execution. This is especially useful + in combination with -runas. ERST #endif -- 2.39.3

4 4

[PATCH v6] vfio/pci: Propagate ACPI notifications to user-space via eventfd
by Grzegorz Jaszczyk 30 Jun '23

30 Jun '23

To allow pass-through devices receiving ACPI notifications, permit to register ACPI notify handler (via VFIO_DEVICE_SET_IRQS) for a given device. The handler role is to receive and propagate such ACPI notifications to the user-space through the user provided eventfd. This allows VMM to receive and propagate them further to the VM, where the actual driver for pass-through device resides and can react to device specific notifications accordingly. The eventfd usage ensures VMM and device isolation: it allows to use a dedicated channel associated with the device for such events, such that the VMM has direct access. Since the eventfd counter is used as ACPI notification value placeholder, the eventfd signaling needs to be serialized in order to not end up with notification values being coalesced. Therefore ACPI notification values are buffered and signalized one by one, when the previous notification value has been consumed. Signed-off-by: Grzegorz Jaszczyk <jaz(a)semihalf.com> --- Changelog v5..v6 - Get rid of #if IS_ENABLED(CONFIG_ACPI) from vfio_pci_intrs.c - There is no need to keep vfio_acpi_notification struct definition in header, make it private and move to cpi_notify.c - Add lockdep_asserts in acpi_notification_dequeue - notification_list_lock was not initialized which triggers some warning with CONFIG_DEBUG_MUTEXES enabled (it was not logical error since mentioned mutex was zeroed thanks to kzalloc it is just DEBUG_MUTEXES performs extra checks and sets lock->magic). - Change notification_lock from mutex to semaphore (notification_sem). The logic was working fine with the mutex but enabling lockdep support made me realize that the mutex has to be released by the same task which acquires it and it is checked with lockdep enabled. Semaphore does not have such a restriction. - In order to correctly handle some sequences such as: * user configures a notification eventfd * a notification fires * the user closes the eventfd without reading it, and then tries to swap in a different eventfd ctx separate the entire eventfd context together with notification_sem from the main vfio_acpi_notification struct. Thanks to that entire, separate eventfd ctx could be swapped leaving the previous eventfd ctx untouched. The new eventfd has its separate notification_sem initialized and will not depend on previous eventfd ctx. Additionally when the last handle to old eventfd will be released and EPOLLHUP triggered, old eventfd ctx will be cleaned-up. - Together with the above add support for required EPOLLHUP handling. - Add missing fput invocations. - Move some common code into vfio_acpi_eventfd_init and use it during registration and eventfd swapping. - v5: https://patchwork.kernel.org/project/kvm/patch/20230609133950.2197552-1-jaz… Changelog v4..v5 Address Alex Williamson's feedback: - s/vfio_acpi_notify.{c,o}/acpi_notify.{c,o} - Do not put acpi_notify to its own module but fold it into main vfio.ko. Additionally select it from VFIO_PCI_CORE instead of VFIO_PCI. - Cleanup acpi notify under igate mutex (in vfio_pci_core_close_device). - Add extra check for ACPI companion in vfio_pci_get_irq_count and extend vfio_pci_ioctl_get_irq_info. - Drop acpi.h include - linux/vfio_acpi_notify.h includes it already. - Send device check notification value for DATA_NONE and non-zero count and for DATA_BOOL and non-zero count (as for loopback testing). - Drop some redundant !acpi_notify->acpi_notify_trigger checks. - Move some common code to new helper functions: 1) acpi_notification_dequeue 2) vfio_acpi_notify_cleanup and rename previous vfio_acpi_notify_cleanup into vfio_remove_acpi_notify which uses it - Add rate limited logging for dropped notifications. - Move vdev->acpi_notification pointer cleanup to the vfio_acpi_notify_cleanup function this also fixes two bigger issues caught by Alex. - Allow the eventfd to be swapped. - s/GFP_KERNEL/GFP_KERNEL_ACCOUNT. - s/VFIO_PCI_ACPI_NTFY_IRQ_INDEX/VFIO_PCI_ACPI_IRQ_INDEX. - Add header protection for multiple includes. - v4: https://patchwork.kernel.org/project/kvm/patch/20230522165811.123417-1-jaz@… Changelog v3..v4 Address Alex Williamson feedback: - Instead of introducing new ioctl used for eventfd registration, take advantage of VFIO_DEVICE_SET_IRQS which already supports virtual IRQs for things like error notification and device release requests. - Introduced mechanism preventing creation of large queues. Other: - Move the implementation into the newly introduced VFIO_ACPI_NOTIFY helper module. It is actually not bound to VFIO_PCI but VFIO_PCI enables it whenever ACPI support is enabled. This change is introduced since ACPI notifications are not limited to PCI devices, making it PCI independent will allow to re-use it also for other VFIO_* like supports: e.g. VFIO_PLATFORM in the future if needed. Moving it out of drivers/vfio/pci/ was also suggested offline. - s/notify_val_next/node - v3: https://patchwork.kernel.org/project/kvm/patch/20230502132700.654528-1-jasz… Changelog v2..v3: - Fix compilation warnings when building with "W=1" Changelog v1..v2: - The v2 implementation is actually completely different then v1: instead of using acpi netlink events for propagating ACPI notifications to the user space take advantage of eventfd, which can provide better VMM and device isolation: it allows to use a dedicated channel associated with the device for such events, such that the VMM has direct access. - Using eventfd counter as notification value placeholder was suggested in v1 and requires additional serialization logic introduced in v2. - Since the vfio-pci supports non-ACPI platforms address !CONFIG_ACPI case. - v1 discussion: https://patchwork.kernel.org/project/kvm/patch/20230307220553.631069-1-jaz@… --- drivers/vfio/Kconfig | 5 + drivers/vfio/Makefile | 1 + drivers/vfio/acpi_notify.c | 324 ++++++++++++++++++++++++++++++ drivers/vfio/pci/Kconfig | 1 + drivers/vfio/pci/vfio_pci_core.c | 13 ++ drivers/vfio/pci/vfio_pci_intrs.c | 80 ++++++++ include/linux/vfio_acpi_notify.h | 36 ++++ include/linux/vfio_pci_core.h | 1 + include/uapi/linux/vfio.h | 1 + 9 files changed, 462 insertions(+) create mode 100644 drivers/vfio/acpi_notify.c create mode 100644 include/linux/vfio_acpi_notify.h diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig index 89e06c981e43..cd9df43a4eb4 100644 --- a/drivers/vfio/Kconfig +++ b/drivers/vfio/Kconfig @@ -12,6 +12,11 @@ menuconfig VFIO If you don't know what to do here, say N. if VFIO +config VFIO_ACPI_NOTIFY + bool + depends on ACPI + default n + config VFIO_CONTAINER bool "Support for the VFIO container /dev/vfio/vfio" select VFIO_IOMMU_TYPE1 if MMU && (X86 || S390 || ARM || ARM64) diff --git a/drivers/vfio/Makefile b/drivers/vfio/Makefile index 70e7dcb302ef..003c2b041785 100644 --- a/drivers/vfio/Makefile +++ b/drivers/vfio/Makefile @@ -7,6 +7,7 @@ vfio-y += vfio_main.o \ vfio-$(CONFIG_IOMMUFD) += iommufd.o vfio-$(CONFIG_VFIO_CONTAINER) += container.o vfio-$(CONFIG_VFIO_VIRQFD) += virqfd.o +vfio-$(CONFIG_VFIO_ACPI_NOTIFY) += acpi_notify.o obj-$(CONFIG_VFIO_IOMMU_TYPE1) += vfio_iommu_type1.o obj-$(CONFIG_VFIO_IOMMU_SPAPR_TCE) += vfio_iommu_spapr_tce.o diff --git a/drivers/vfio/acpi_notify.c b/drivers/vfio/acpi_notify.c new file mode 100644 index 000000000000..b78c33077dfa --- /dev/null +++ b/drivers/vfio/acpi_notify.c @@ -0,0 +1,324 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * VFIO ACPI notification propagation + * + * Author: Grzegorz Jaszczyk <jaz(a)semihalf.com> + */ +#include <linux/file.h> +#include <linux/semaphore.h> +#include <linux/vfio_acpi_notify.h> + +#define NOTIFICATION_QUEUE_SIZE 20 + +struct acpi_eventfd_ctx { + struct eventfd_ctx *acpi_notify_trigger; + struct file *acpi_notify_trigger_file; + struct semaphore notification_sem; + struct work_struct acpi_notification_work; + wait_queue_entry_t wait; + poll_table pt; + struct vfio_acpi_notification *acpi_notify; +}; + +struct vfio_acpi_notification { + struct acpi_eventfd_ctx *acpi_eventfd; + struct list_head notification_list; + struct mutex notification_list_lock; + int notification_queue_count; +}; + +struct notification_queue { + int notification_val; + struct list_head node; +}; + +static int vfio_eventfd_wakeup(wait_queue_entry_t *wait, unsigned int mode, + int sync, void *key) +{ + struct acpi_eventfd_ctx *acpi_eventfdctx = + container_of(wait, struct acpi_eventfd_ctx, wait); + __poll_t flags = key_to_poll(key); + + /* + * eventfd_read signalize EPOLLOUT at the end of its function - this + * means previous eventfd with its notification value was consumed so + * the next notification can be signalized now if pending - schedule + * proper work. + */ + if (flags & EPOLLOUT) { + up(&acpi_eventfdctx->notification_sem); + + schedule_work(&acpi_eventfdctx->acpi_notification_work); + } + + /* + * Even if the eventfd is closed lets still queue notifications so they + * can be replicated when new eventfd is registered (see "Allow eventfd + * to be swapped"). + * + * Below will be reached only in case user closes eventfd and then + * trigger eventfd swap (or vice-versa). + */ + if (flags & EPOLLHUP) { + /* + * eventfd_release after signalling EPOLLHUP calls eventfd_ctx_put + * so no need to do it here. + */ + + kfree(acpi_eventfdctx); + } + + return 0; +} + +static void vfio_ptable_queue_proc(struct file *file, + wait_queue_head_t *wqh, poll_table *pt) +{ + struct acpi_eventfd_ctx *acpi_eventfdctx = + container_of(pt, struct acpi_eventfd_ctx, pt); + + add_wait_queue(wqh, &acpi_eventfdctx->wait); +} + +static struct notification_queue * +acpi_notification_dequeue(struct vfio_acpi_notification *acpi_notify) +{ + struct notification_queue *oldest_entry; + + lockdep_assert_held(&acpi_notify->notification_list_lock); + + oldest_entry = list_first_entry(&acpi_notify->notification_list, + struct notification_queue, + node); + list_del(&oldest_entry->node); + acpi_notify->notification_queue_count--; + + return oldest_entry; +} + +static void acpi_notification_work_fn(struct work_struct *work) +{ + struct acpi_eventfd_ctx *acpi_eventfdctx; + struct vfio_acpi_notification *acpi_notify; + struct notification_queue *entry; + + acpi_eventfdctx = container_of(work, struct acpi_eventfd_ctx, + acpi_notification_work); + + acpi_notify = acpi_eventfdctx->acpi_notify; + + mutex_lock(&acpi_notify->notification_list_lock); + if (list_empty(&acpi_notify->notification_list)) + goto out; + + /* + * If the previous eventfd was not yet consumed by user-space lets hold + * on and exit. The notification function will be rescheduled when + * signaling eventfd will be possible (when the EPOLLOUT will be + * signalized and unlocks notify_events or when eventfd will be swapped). + */ + if (down_trylock(&acpi_eventfdctx->notification_sem)) + goto out; + + entry = acpi_notification_dequeue(acpi_notify); + + mutex_unlock(&acpi_notify->notification_list_lock); + + eventfd_signal(acpi_eventfdctx->acpi_notify_trigger, entry->notification_val); + + kfree(entry); + + return; +out: + mutex_unlock(&acpi_notify->notification_list_lock); +} + +static void +vfio_acpi_notify_cleanup(struct vfio_acpi_notification **acpi_notify_ptr, + struct acpi_device *adev) +{ + struct vfio_acpi_notification *acpi_notify = *acpi_notify_ptr; + struct acpi_eventfd_ctx *acpi_eventfd = acpi_notify->acpi_eventfd; + struct notification_queue *entry, *entry_tmp; + u64 cnt; + + eventfd_ctx_remove_wait_queue(acpi_eventfd->acpi_notify_trigger, + &acpi_eventfd->wait, &cnt); + + flush_work(&acpi_eventfd->acpi_notification_work); + + mutex_lock(&acpi_notify->notification_list_lock); + list_for_each_entry_safe(entry, entry_tmp, + &acpi_notify->notification_list, + node) { + list_del(&entry->node); + kfree(entry); + } + mutex_unlock(&acpi_notify->notification_list_lock); + + eventfd_ctx_put(acpi_eventfd->acpi_notify_trigger); + + /* + * fput releases references to eventfd file but it will not trigger the + * vfio_eventfd_wakeup with EPOLLHUP since eventfd_ctx_remove_wait_queue + * was already called and removed wq entry (wait) from the eventfd + * wq head. + */ + fput(acpi_eventfd->acpi_notify_trigger_file); + + kfree(acpi_notify->acpi_eventfd); + kfree(acpi_notify); + + *acpi_notify_ptr = NULL; +} + +static void vfio_acpi_notify_handler(acpi_handle handle, u32 event, void *data) +{ + struct vfio_acpi_notification *acpi_notify = (struct vfio_acpi_notification *)data; + struct notification_queue *entry; + + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + return; + + entry->notification_val = event; + INIT_LIST_HEAD(&entry->node); + + mutex_lock(&acpi_notify->notification_list_lock); + if (acpi_notify->notification_queue_count > NOTIFICATION_QUEUE_SIZE) { + struct notification_queue *oldest_entry = + acpi_notification_dequeue(acpi_notify); + + if (printk_ratelimit()) + acpi_handle_warn(handle, + "dropping notification value %d\n", + oldest_entry->notification_val); + + kfree(oldest_entry); + } + list_add_tail(&entry->node, &acpi_notify->notification_list); + acpi_notify->notification_queue_count++; + mutex_unlock(&acpi_notify->notification_list_lock); + + schedule_work(&acpi_notify->acpi_eventfd->acpi_notification_work); +} + +void vfio_acpi_notify(struct acpi_device *adev, u32 event, void *data) +{ + acpi_handle handle = adev->handle; + + vfio_acpi_notify_handler(handle, event, data); +} +EXPORT_SYMBOL_GPL(vfio_acpi_notify); + +void vfio_remove_acpi_notify(struct vfio_acpi_notification **acpi_notify_ptr, + struct acpi_device *adev) +{ + struct vfio_acpi_notification *acpi_notify = *acpi_notify_ptr; + + if (!acpi_notify) + return; + + acpi_remove_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, + vfio_acpi_notify_handler); + + vfio_acpi_notify_cleanup(acpi_notify_ptr, adev); +} +EXPORT_SYMBOL_GPL(vfio_remove_acpi_notify); + +static void vfio_acpi_eventfd_init(struct vfio_acpi_notification *acpi_notify, + struct eventfd_ctx *efdctx, int32_t fd) +{ + struct acpi_eventfd_ctx *acpi_eventfd; + + acpi_eventfd = kzalloc(sizeof(struct acpi_eventfd_ctx), GFP_KERNEL_ACCOUNT); + + INIT_WORK(&acpi_eventfd->acpi_notification_work, acpi_notification_work_fn); + acpi_eventfd->acpi_notify_trigger = efdctx; + + sema_init(&acpi_eventfd->notification_sem, 1); + + /* + * Install custom wake-up handler to be notified whenever underlying + * eventfd is consumed by the user-space. + */ + init_waitqueue_func_entry(&acpi_eventfd->wait, vfio_eventfd_wakeup); + init_poll_funcptr(&acpi_eventfd->pt, vfio_ptable_queue_proc); + + acpi_eventfd->acpi_notify_trigger_file = eventfd_fget(fd); + vfs_poll(acpi_eventfd->acpi_notify_trigger_file, &acpi_eventfd->pt); + + acpi_eventfd->acpi_notify = acpi_notify; + acpi_notify->acpi_eventfd = acpi_eventfd; +} + +int vfio_register_acpi_notify_handler(struct vfio_acpi_notification **acpi_notify_ptr, + struct acpi_device *adev, int32_t fd) +{ + struct vfio_acpi_notification *acpi_notify = *acpi_notify_ptr; + struct eventfd_ctx *efdctx; + acpi_status status; + + if (fd < -1) + return -EINVAL; + else if (fd == -1) { + vfio_remove_acpi_notify(acpi_notify_ptr, adev); + return 0; + } + + efdctx = eventfd_ctx_fdget(fd); + if (IS_ERR(efdctx)) + return PTR_ERR(efdctx); + + /* Allow eventfd to be swapped */ + if (acpi_notify) { + struct file *trigger_file_before_swap = + acpi_notify->acpi_eventfd->acpi_notify_trigger_file; + + /* + * Lets allocate new acpi_eventfd_ctx, the previous is + * alive until eventfd is closed. + */ + vfio_acpi_eventfd_init(acpi_notify, efdctx, fd); + + /* + * The ACPI notifications could arrive and be queued during + * eventfd swap, retrigger the worker after notification + * replication unlocking. + */ + schedule_work(&acpi_notify->acpi_eventfd->acpi_notification_work); + + /* + * If the last reference to acpi_notify_trigger_file was + * released, the EPOLLHUP will be handled (but not immediately + * since fput is async). + */ + fput(trigger_file_before_swap); + + return 0; + } + + acpi_notify = kzalloc(sizeof(*acpi_notify), GFP_KERNEL_ACCOUNT); + if (!acpi_notify) + return -ENOMEM; + + *acpi_notify_ptr = acpi_notify; + mutex_init(&acpi_notify->notification_list_lock); + INIT_LIST_HEAD(&acpi_notify->notification_list); + + vfio_acpi_eventfd_init(acpi_notify, efdctx, fd); + + status = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, + vfio_acpi_notify_handler, (void *)acpi_notify); + if (ACPI_FAILURE(status)) { + dev_err(&adev->dev, "Failed to install notify handler: %s", + acpi_format_exception(status)); + + vfio_acpi_notify_cleanup(acpi_notify_ptr, adev); + + return -ENODEV; + } + + return 0; +} +EXPORT_SYMBOL_GPL(vfio_register_acpi_notify_handler); diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig index f9d0c908e738..f03ca773dfd9 100644 --- a/drivers/vfio/pci/Kconfig +++ b/drivers/vfio/pci/Kconfig @@ -4,6 +4,7 @@ config VFIO_PCI_CORE tristate select VFIO_VIRQFD select IRQ_BYPASS_MANAGER + select VFIO_ACPI_NOTIFY if ACPI config VFIO_PCI_MMAP def_bool y if !S390 diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c index a5ab416cf476..1cc4a9c05403 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -27,6 +27,7 @@ #include <linux/vgaarb.h> #include <linux/nospec.h> #include <linux/sched/mm.h> +#include <linux/vfio_acpi_notify.h> #if IS_ENABLED(CONFIG_EEH) #include <asm/eeh.h> #endif @@ -683,6 +684,7 @@ void vfio_pci_core_close_device(struct vfio_device *core_vdev) { struct vfio_pci_core_device *vdev = container_of(core_vdev, struct vfio_pci_core_device, vdev); + struct acpi_device *adev = ACPI_COMPANION(&vdev->pdev->dev); if (vdev->sriov_pf_core_dev) { mutex_lock(&vdev->sriov_pf_core_dev->vf_token->lock); @@ -704,6 +706,8 @@ void vfio_pci_core_close_device(struct vfio_device *core_vdev) eventfd_ctx_put(vdev->req_trigger); vdev->req_trigger = NULL; } + if (adev) + vfio_remove_acpi_notify(&vdev->acpi_notification, adev); mutex_unlock(&vdev->igate); } EXPORT_SYMBOL_GPL(vfio_pci_core_close_device); @@ -725,6 +729,8 @@ EXPORT_SYMBOL_GPL(vfio_pci_core_finish_enable); static int vfio_pci_get_irq_count(struct vfio_pci_core_device *vdev, int irq_type) { + struct acpi_device *adev = ACPI_COMPANION(&vdev->pdev->dev); + if (irq_type == VFIO_PCI_INTX_IRQ_INDEX) { u8 pin; @@ -761,6 +767,8 @@ static int vfio_pci_get_irq_count(struct vfio_pci_core_device *vdev, int irq_typ return 1; } else if (irq_type == VFIO_PCI_REQ_IRQ_INDEX) { return 1; + } else if (adev && irq_type == VFIO_PCI_ACPI_IRQ_INDEX) { + return 1; } return 0; @@ -1084,6 +1092,7 @@ static int vfio_pci_ioctl_get_irq_info(struct vfio_pci_core_device *vdev, struct vfio_irq_info __user *arg) { unsigned long minsz = offsetofend(struct vfio_irq_info, count); + struct acpi_device *adev = ACPI_COMPANION(&vdev->pdev->dev); struct vfio_irq_info info; if (copy_from_user(&info, arg, minsz)) @@ -1096,6 +1105,10 @@ static int vfio_pci_ioctl_get_irq_info(struct vfio_pci_core_device *vdev, case VFIO_PCI_INTX_IRQ_INDEX ... VFIO_PCI_MSIX_IRQ_INDEX: case VFIO_PCI_REQ_IRQ_INDEX: break; + case VFIO_PCI_ACPI_IRQ_INDEX: + if (adev) + break; + return -EINVAL; case VFIO_PCI_ERR_IRQ_INDEX: if (pci_is_pcie(vdev->pdev)) break; diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c index bffb0741518b..27d0c4cdc3c9 100644 --- a/drivers/vfio/pci/vfio_pci_intrs.c +++ b/drivers/vfio/pci/vfio_pci_intrs.c @@ -19,6 +19,7 @@ #include <linux/vfio.h> #include <linux/wait.h> #include <linux/slab.h> +#include <linux/vfio_acpi_notify.h> #include "vfio_pci_priv.h" @@ -667,6 +668,71 @@ static int vfio_pci_set_req_trigger(struct vfio_pci_core_device *vdev, count, flags, data); } +static int +vfio_pci_set_acpi_ntfy_trigger(struct vfio_pci_core_device *vdev, + unsigned int index, unsigned int start, + unsigned int count, uint32_t flags, void *data) +{ + struct acpi_device *adev = ACPI_COMPANION(&vdev->pdev->dev); + + if (index != VFIO_PCI_ACPI_IRQ_INDEX || start != 0 || count > 1) + return -EINVAL; + + if (!adev) + return -ENODEV; + + if (!vdev->acpi_notification) + return -EINVAL; + + /* + * Disable notifications: flags = (DATA_NONE|ACTION_TRIGGER), count = 0 + * Enable loopback testing: (DATA_BOOL|ACTION_TRIGGER) or + * (DATA_NONE|ACTION_TRIGGER), count != 0 + */ + if (flags & VFIO_IRQ_SET_DATA_NONE) { + if (count) + vfio_acpi_notify(adev, ACPI_NOTIFY_DEVICE_CHECK, + vdev->acpi_notification); + else + vfio_remove_acpi_notify(&vdev->acpi_notification, adev); + + return 0; + } else if (flags & VFIO_IRQ_SET_DATA_BOOL) { + uint8_t trigger; + + if (!count) + return -EINVAL; + + trigger = *(uint8_t *)data; + if (trigger) + vfio_acpi_notify(adev, ACPI_NOTIFY_DEVICE_CHECK, + vdev->acpi_notification); + + return 0; + } + + return -EINVAL; +} + +static int +vfio_pci_set_acpi_ntfy_eventfd_trigger(struct vfio_pci_core_device *vdev, + unsigned int index, unsigned int start, + unsigned int count, uint32_t flags, void *data) +{ + struct acpi_device *adev = ACPI_COMPANION(&vdev->pdev->dev); + int32_t fd; + + if (index != VFIO_PCI_ACPI_IRQ_INDEX || start != 0 || count != 1) + return -EINVAL; + + if (!adev) + return -ENODEV; + + fd = *(int32_t *)data; + + return vfio_register_acpi_notify_handler(&vdev->acpi_notification, adev, fd); +} + int vfio_pci_set_irqs_ioctl(struct vfio_pci_core_device *vdev, uint32_t flags, unsigned index, unsigned start, unsigned count, void *data) @@ -716,6 +782,20 @@ int vfio_pci_set_irqs_ioctl(struct vfio_pci_core_device *vdev, uint32_t flags, break; } break; + case VFIO_PCI_ACPI_IRQ_INDEX: + switch (flags & VFIO_IRQ_SET_ACTION_TYPE_MASK) { + case VFIO_IRQ_SET_ACTION_TRIGGER: + switch (flags & VFIO_IRQ_SET_DATA_TYPE_MASK) { + case VFIO_IRQ_SET_DATA_BOOL: + case VFIO_IRQ_SET_DATA_NONE: + func = vfio_pci_set_acpi_ntfy_trigger; + break; + case VFIO_IRQ_SET_DATA_EVENTFD: + func = vfio_pci_set_acpi_ntfy_eventfd_trigger; + break; + } + } + break; } if (!func) diff --git a/include/linux/vfio_acpi_notify.h b/include/linux/vfio_acpi_notify.h new file mode 100644 index 000000000000..e29e4274d192 --- /dev/null +++ b/include/linux/vfio_acpi_notify.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * VFIO ACPI notification replication + * + * Author: Grzegorz Jaszczyk <jaz(a)semihalf.com> + */ +#include <linux/acpi.h> +#include <linux/eventfd.h> +#include <linux/poll.h> + +#ifndef VFIO_ACPI_NOTIFY_H +#define VFIO_ACPI_NOTIFY_H + +struct vfio_acpi_notification; + +#if IS_ENABLED(CONFIG_ACPI) +void vfio_acpi_notify(struct acpi_device *adev, u32 event, void *data); +int vfio_register_acpi_notify_handler(struct vfio_acpi_notification **acpi_notify, + struct acpi_device *adev, int32_t fd); +void vfio_remove_acpi_notify(struct vfio_acpi_notification **acpi_notify, + struct acpi_device *adev); +#else +static inline void vfio_acpi_notify(struct acpi_device *adev, u32 event, void *data) {} +static inline int +vfio_register_acpi_notify_handler(struct vfio_acpi_notification **acpi_notify, + struct acpi_device *adev, int32_t fd) +{ + return -ENODEV; +} + +static inline void +vfio_remove_acpi_notify(struct vfio_acpi_notification **acpi_notify, + struct acpi_device *adev) {} +#endif /* CONFIG_ACPI */ + +#endif /* VFIO_ACPI_NOTIFY_H */ diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h index 367fd79226a3..a4491b3d8064 100644 --- a/include/linux/vfio_pci_core.h +++ b/include/linux/vfio_pci_core.h @@ -96,6 +96,7 @@ struct vfio_pci_core_device { struct mutex vma_lock; struct list_head vma_list; struct rw_semaphore memory_lock; + struct vfio_acpi_notification *acpi_notification; }; /* Will be exported for vfio pci drivers usage */ diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index b71276bd7f91..ee8ba6354662 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -625,6 +625,7 @@ enum { VFIO_PCI_MSIX_IRQ_INDEX, VFIO_PCI_ERR_IRQ_INDEX, VFIO_PCI_REQ_IRQ_INDEX, + VFIO_PCI_ACPI_IRQ_INDEX, VFIO_PCI_NUM_IRQS }; -- 2.41.0.255.g8b1d071c50-goog

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[PATCH 0/2] qemu: VM saving related fixes
by Peter Krempa 30 Jun '23

30 Jun '23

Peter Krempa (2): qemu: driver: Reformat helpers for saving VM state Properly mark auto-added 'terminator' virStorageSource src/qemu/qemu_domain.c | 4 +++- src/qemu/qemu_driver.c | 11 +++++++---- src/storage_file/storage_source.c | 1 + 3 files changed, 11 insertions(+), 5 deletions(-) -- 2.41.0

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[PATCH 0/2] NEWS update for upcoming release
by Peter Krempa 30 Jun '23

30 Jun '23

Peter Krempa (2): NEWS: Move section about 'discard_no_unref' to features NEWS: Document changes for the release NEWS.rst | 49 ++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 44 insertions(+), 5 deletions(-) -- 2.41.0

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Entering freeze for libvirt-9.5.0
by Jiri Denemark 30 Jun '23

30 Jun '23

I have just tagged v9.5.0-rc1 in the repository and pushed signed tarballs and source RPMs to https://download.libvirt.org/ Please give the release candidate some testing and in case you find a serious issue which should have a fix in the upcoming release, feel free to reply to this thread to make sure the issue is more visible. If you have not done so yet, please update NEWS.rst to document any significant change you made since the last release. Thanks, Jirka

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