[libvirt] [PATCH v2 0/4] Rewrite virGetUser*Directory() functions using g_get_*_dir()
by Fabiano Fidêncio
By rewriting virGetUser*Directory() functions using g_get_*_dir()
functions allows us to drop all the different implementations we
keep, as GLib already takes care of those for us.
Changes since v1:
https://www.redhat.com/archives/libvir-list/2019-December/msg01055.html
- Don't check for the return of g_get_*_dir(), as it cannot be NULL;
Fabiano Fidêncio (4):
util: Rewrite virGetUserDirectory() using g_get_home_dir()
util: Rewrite virGetUserConfigDirectory() using
g_get_user_config_dir()
util: Rewrite virGetUserCacheDirectory() using g_get_user_cache_dir()
util: Rewrite virGetUserRuntimeDirectory() using
g_get_user_runtime_dir()
src/util/virutil.c | 125 +++++++--------------------------------------
1 file changed, 19 insertions(+), 106 deletions(-)
--
2.23.0
5 years
[libvirt] [PATCH] qemu: store the emulator name in the capabilities XML
by Daniel P. Berrangé
We don't need this for any functional purpose, but when debugging hosts
it is useful to know what binary a given capabilities XML document is
associated with.
Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com>
---
src/qemu/qemu_capabilities.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 2223589058..7d47fa4d02 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -3852,6 +3852,7 @@ virQEMUCapsParseSEVInfo(virQEMUCapsPtr qemuCaps, xmlXPathContextPtr ctxt)
* Parsing a doc that looks like
*
* <qemuCaps>
+ * <emulator>/some/path</emulator>
* <qemuctime>234235253</qemuctime>
* <selfctime>234235253</selfctime>
* <selfvers>1002016</selfvers>
@@ -3895,6 +3896,18 @@ virQEMUCapsLoadCache(virArch hostArch,
goto cleanup;
}
+ if (!(str = virXPathString("string(./emulator)", ctxt))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("missing emulator in QEMU capabilities cache"));
+ goto cleanup;
+ }
+ if (!STREQ(str, qemuCaps->binary)) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Expected caps for '%s' but saw '%s'"),
+ qemuCaps->binary, str);
+ goto cleanup;
+ }
+ VIR_FREE(str);
if (virXPathLongLong("string(./qemuctime)", ctxt, &l) < 0) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("missing qemuctime in QEMU capabilities XML"));
@@ -4232,6 +4245,8 @@ virQEMUCapsFormatCache(virQEMUCapsPtr qemuCaps)
virBufferAddLit(&buf, "<qemuCaps>\n");
virBufferAdjustIndent(&buf, 2);
+ virBufferEscapeString(&buf, "<emulator>%s</emulator>\n",
+ qemuCaps->binary);
virBufferAsprintf(&buf, "<qemuctime>%llu</qemuctime>\n",
(long long)qemuCaps->ctime);
virBufferAsprintf(&buf, "<selfctime>%llu</selfctime>\n",
--
2.23.0
5 years
[libvirt] [PATCH] conf: fix populating of fake NUMA in multi-node hosts
by Daniel P. Berrangé
If the host OS doesn't have NUMA present, we fallback to
populating fake NUMA info and the code thus assumes only a
single NUMA node.
Unfortunately we also fallback to fake NUMA if numactl-devel
was not present, and in this case we can still have multiple
NUMA nodes. In this case we create all CPUs, but only the
CPUs in the first node have any data filled in, resulting in
capabilities like:
<topology>
<cells num='1'>
<cell id='0'>
<memory unit='KiB'>15977572</memory>
<cpus num='48'>
<cpu id='0' socket_id='0' core_id='0' siblings='0'/>
<cpu id='1' socket_id='0' core_id='0' siblings='1'/>
<cpu id='2' socket_id='0' core_id='1' siblings='2'/>
<cpu id='3' socket_id='0' core_id='1' siblings='3'/>
<cpu id='4' socket_id='0' core_id='2' siblings='4'/>
<cpu id='5' socket_id='0' core_id='2' siblings='5'/>
<cpu id='6' socket_id='0' core_id='3' siblings='6'/>
<cpu id='7' socket_id='0' core_id='3' siblings='7'/>
<cpu id='8' socket_id='0' core_id='4' siblings='8'/>
<cpu id='9' socket_id='0' core_id='4' siblings='9'/>
<cpu id='10' socket_id='0' core_id='5' siblings='10'/>
<cpu id='11' socket_id='0' core_id='5' siblings='11'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
<cpu id='0'/>
</cpus>
</cell>
</cells>
</topology>
With this new code we get something slightly less broken
<topology>
<cells num='4'>
<cell id='0'>
<memory unit='KiB'>15977572</memory>
<cpus num='12'>
<cpu id='0' socket_id='0' core_id='0' siblings='0-1'/>
<cpu id='1' socket_id='0' core_id='0' siblings='0-1'/>
<cpu id='2' socket_id='0' core_id='1' siblings='2-3'/>
<cpu id='3' socket_id='0' core_id='1' siblings='2-3'/>
<cpu id='4' socket_id='0' core_id='2' siblings='4-5'/>
<cpu id='5' socket_id='0' core_id='2' siblings='4-5'/>
<cpu id='6' socket_id='0' core_id='3' siblings='6-7'/>
<cpu id='7' socket_id='0' core_id='3' siblings='6-7'/>
<cpu id='8' socket_id='0' core_id='4' siblings='8-9'/>
<cpu id='9' socket_id='0' core_id='4' siblings='8-9'/>
<cpu id='10' socket_id='0' core_id='5' siblings='10-11'/>
<cpu id='11' socket_id='0' core_id='5' siblings='10-11'/>
</cpus>
</cell>
<cell id='0'>
<memory unit='KiB'>15977572</memory>
<cpus num='12'>
<cpu id='12' socket_id='0' core_id='0' siblings='12-13'/>
<cpu id='13' socket_id='0' core_id='0' siblings='12-13'/>
<cpu id='14' socket_id='0' core_id='1' siblings='14-15'/>
<cpu id='15' socket_id='0' core_id='1' siblings='14-15'/>
<cpu id='16' socket_id='0' core_id='2' siblings='16-17'/>
<cpu id='17' socket_id='0' core_id='2' siblings='16-17'/>
<cpu id='18' socket_id='0' core_id='3' siblings='18-19'/>
<cpu id='19' socket_id='0' core_id='3' siblings='18-19'/>
<cpu id='20' socket_id='0' core_id='4' siblings='20-21'/>
<cpu id='21' socket_id='0' core_id='4' siblings='20-21'/>
<cpu id='22' socket_id='0' core_id='5' siblings='22-23'/>
<cpu id='23' socket_id='0' core_id='5' siblings='22-23'/>
</cpus>
</cell>
</cells>
</topology>
The topology at least now reflects what 'virsh nodeinfo' reports.
The main bug is that the CPU "id" values won't match what the Linux
host actually uses.
Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com>
---
src/conf/capabilities.c | 67 ++++++++++++++++++++++-------------------
1 file changed, 36 insertions(+), 31 deletions(-)
diff --git a/src/conf/capabilities.c b/src/conf/capabilities.c
index 81a2004dba..2a183d7070 100644
--- a/src/conf/capabilities.c
+++ b/src/conf/capabilities.c
@@ -1593,7 +1593,7 @@ virCapabilitiesHostNUMAInitFake(virCapsHostNUMAPtr caps)
virNodeInfo nodeinfo;
virCapsHostNUMACellCPUPtr cpus;
int ncpus;
- int s, c, t;
+ int n, s, c, t;
int id, cid;
int onlinecpus G_GNUC_UNUSED;
bool tmp;
@@ -1602,47 +1602,52 @@ virCapabilitiesHostNUMAInitFake(virCapsHostNUMAPtr caps)
return -1;
ncpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
- onlinecpus = nodeinfo.cpus;
- if (VIR_ALLOC_N(cpus, ncpus) < 0)
- return -1;
- id = cid = 0;
- for (s = 0; s < nodeinfo.sockets; s++) {
- for (c = 0; c < nodeinfo.cores; c++) {
- for (t = 0; t < nodeinfo.threads; t++) {
- if (virHostCPUGetOnline(id, &tmp) < 0)
- goto error;
- if (tmp) {
- cpus[cid].id = id;
- cpus[cid].socket_id = s;
- cpus[cid].core_id = c;
- if (!(cpus[cid].siblings = virBitmapNew(ncpus)))
+ id = 0;
+ for (n = 0; n < nodeinfo.nodes; n++) {
+ int nodecpus = nodeinfo.sockets * nodeinfo.cores * nodeinfo.threads;
+ cid = 0;
+
+ if (VIR_ALLOC_N(cpus, nodecpus) < 0)
+ return -1;
+
+ for (s = 0; s < nodeinfo.sockets; s++) {
+ for (c = 0; c < nodeinfo.cores; c++) {
+ g_autoptr(virBitmap) siblings = virBitmapNew(ncpus);
+ for (t = 0; t < nodeinfo.threads; t++)
+ ignore_value(virBitmapSetBit(siblings, id + t));
+
+ for (t = 0; t < nodeinfo.threads; t++) {
+ if (virHostCPUGetOnline(id, &tmp) < 0)
goto error;
- ignore_value(virBitmapSetBit(cpus[cid].siblings, id));
- cid++;
+ if (tmp) {
+ cpus[cid].id = id;
+ cpus[cid].socket_id = s;
+ cpus[cid].core_id = c;
+ if (!(cpus[cid].siblings = virBitmapNew(ncpus)))
+ goto error;
+ virBitmapCopy(cpus[cid].siblings, siblings);
+ cid++;
+ }
+
+ id++;
}
-
- id++;
}
}
- }
- virCapabilitiesHostNUMAAddCell(caps, 0,
- nodeinfo.memory,
-#ifdef __linux__
- onlinecpus, cpus,
-#else
- ncpus, cpus,
-#endif
- 0, NULL,
- 0, NULL);
+ virCapabilitiesHostNUMAAddCell(caps, 0,
+ nodeinfo.memory,
+ cid, cpus,
+ 0, NULL,
+ 0, NULL);
+ }
return 0;
error:
- for (; id >= 0; id--)
- virBitmapFree(cpus[id].siblings);
+ for (; cid >= 0; cid--)
+ virBitmapFree(cpus[cid].siblings);
VIR_FREE(cpus);
return -1;
}
--
2.23.0
5 years
[libvirt] [PATCH 0/5] Various memleak fixes
by Michal Privoznik
*** BLURB HERE ***
Michal Prívozník (5):
domaincapstest: Don't leak cpu definitions
testutilsxen: Avoid double free of driver caps
virCapabilitiesHostNUMAUnref: Accept NULL
qemu: Reoder cleanup in qemuStateCleanup()
qemu: Don't leak hostcpu or hostnuma on driver cleanup
src/conf/capabilities.c | 3 +++
src/qemu/qemu_driver.c | 45 +++++++++++++++++------------------------
tests/domaincapstest.c | 2 +-
tests/testutilsxen.c | 1 -
4 files changed, 23 insertions(+), 28 deletions(-)
--
2.24.1
5 years
[libvirt] [PATCH] conf: avoid mem leak re-allocating fake NUMA capabilities
by Daniel P. Berrangé
The 'caps' object is already allocated when the fake NUMA
initialization takes place.
Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com>
---
src/conf/capabilities.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/src/conf/capabilities.c b/src/conf/capabilities.c
index 4fac59e6f7..81a2004dba 100644
--- a/src/conf/capabilities.c
+++ b/src/conf/capabilities.c
@@ -1628,9 +1628,6 @@ virCapabilitiesHostNUMAInitFake(virCapsHostNUMAPtr caps)
}
}
- caps = g_new0(virCapsHostNUMA, 1);
- caps->cells = g_ptr_array_new_with_free_func(
- (GDestroyNotify)virCapabilitiesFreeHostNUMACell);
virCapabilitiesHostNUMAAddCell(caps, 0,
nodeinfo.memory,
#ifdef __linux__
--
2.23.0
5 years
[libvirt] [PATCH 0/3] qemu: fix crash bugs in snapshot revert
by Pavel Mores
The aim of this series is to fix
https://bugzilla.redhat.com/show_bug.cgi?id=1610207
however before getting to that we first need to fix an unrelated (and much
more recent) bug in patch 1. We clean up the fix in patch 2 by converting the
whole function to the new allocation idioms.
The actual reported bug is then fixed in patch 3.
Pavel Mores (3):
qemu: fix crash due to freeing an uninitialised pointer
qemu: use g_autofree instead of VIR_FREE in
qemuMonitorTextCreateSnapshot()
qemu: fix concurrency crash bug in snapshot revert
src/qemu/qemu_driver.c | 17 ++++++++++++++---
src/qemu/qemu_monitor_text.c | 20 ++++++--------------
2 files changed, 20 insertions(+), 17 deletions(-)
--
2.21.0
5 years
[libvirt] [PATCH 0/3] Some coverity adjustments
by John Ferlan
I upgraded to f31 and it resulted in an essentially hosed Coverity
build/analysis environment with the following message during cov-emit
processing (a preprocessing of sorts):
"/usr/include/glib-2.0/glib/gspawn.h", line 76: error #67: expected a "}"
G_SPAWN_ERROR_2BIG GLIB_DEPRECATED_ENUMERATOR_IN_2_32_FOR(G_SPAWN_ERROR_TOO_BIG) = G_SPAWN_ERROR_TOO_BIG,
^
So instead, I'm using a guest to run Coverity "when I remember/can".
I also found that my f31 environment doesn't like building w/ docs as
I get the following messages while running the convert command:
...
usr/bin/mv: cannot stat '/tmp/magick-1191987h12h27ex0lZD.svg': No such file or directory
GEN kbase.html.tmp
convert: delegate failed `'uniconvertor' '%i' '%o.svg'; /usr/bin/mv '%o.svg' '%o'' @ error/delegate.c/InvokeDelegate/1958.
convert: unable to open file `/tmp/magick-1191987OqYJwrq8isaG': No such file or directory @ error/constitute.c/ReadImage/605.
convert: no images defined `migration-managed-p2p.png' @ error/convert.c/ConvertImageCommand/3235.
....
I haven't followed along as closely as I used to, but my vpath env
uses obj as a subdirectory of my main git tree/target. Whether the
new build env has anything to do with it or it's just f31, I haven't
been able to determine.
Beyond these 3 patches here - there is one other adjustment that is
necessary to build libvirt under Coverity and that's removing the
ATTRIBUTE_NONNULL(2) from the virDomainDefFormat definition in
src/conf/domain_conf.h. This was added in commit 92d412149 which
also included two calls to virDomainDefFormat with NULL as the 2nd
argument (hyperv_driver.c and security_apparmor.c); however, the
commit message notes preparation for future work, so I'll keep a
hack for that local for now at least.
The virsh change below is innocuous yes, but it showed up in a
coverity analysis because it wasn't sure if the resulting variables
could point to the same address and if they did, then there was a
possible use after free because the @source is free'd even though
the @target_node is later referenced. The patch here avoids that
and provides a slight adjustment to not search for either node by
name if it was already found. Whether there's a weird latent issue
because <source> can be repeated while <target> cannot be is something
I suppose a reviewer can warn me about ;-).
John Ferlan (3):
conf: Fix ATTRIBUTE_NONNULL usages
vbox: Reset @ret after xmlFreeNode
virsh: Adjust logic checks in virshUpdateDiskXML
src/conf/domain_conf.h | 15 ++++++---------
src/vbox/vbox_snapshot_conf.c | 1 +
tools/virsh-domain.c | 5 ++---
3 files changed, 9 insertions(+), 12 deletions(-)
--
2.23.0
5 years
[libvirt] [PATCH] test: qemucaps: Refresh x86_64 caps probe data for the qemu-4.2 release
by Peter Krempa
Signed-off-by: Peter Krempa <pkrempa(a)redhat.com>
---
Pushed as trivial.
tests/qemucapabilitiesdata/caps_4.2.0.x86_64.replies | 10 +++++-----
tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml | 6 +++---
2 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.replies b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.replies
index ae07ffdb49..b9481b6f85 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.replies
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.replies
@@ -17,11 +17,11 @@
{
"return": {
"qemu": {
- "micro": 92,
- "minor": 1,
+ "micro": 0,
+ "minor": 2,
"major": 4
},
- "package": "v4.2.0-rc2-19-g2061735ff0"
+ "package": "v4.2.0"
},
"id": "libvirt-2"
}
@@ -23614,7 +23614,7 @@
"kvm-steal-time": true,
"kvmclock": true,
"vmx-zero-len-inject": false,
- "pschange-mc-no": false,
+ "pschange-mc-no": true,
"vmx-rdrand-exit": true,
"lwp": false,
"amd-ssbd": false,
@@ -23930,7 +23930,7 @@
"kvm-steal-time": true,
"kvmclock": true,
"vmx-zero-len-inject": false,
- "pschange-mc-no": false,
+ "pschange-mc-no": true,
"vmx-rdrand-exit": true,
"lwp": false,
"amd-ssbd": false,
diff --git a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
index 31302c9a7b..7d886d9a87 100644
--- a/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_4.2.0.x86_64.xml
@@ -217,10 +217,10 @@
<flag name='blockdev-file-dynamic-auto-read-only'/>
<flag name='savevm-monitor-nodes'/>
<flag name='drive-nvme'/>
- <version>4001092</version>
+ <version>4002000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>43100242</microcodeVersion>
- <package>v4.2.0-rc2-19-g2061735ff0</package>
+ <package>v4.2.0</package>
<arch>x86_64</arch>
<hostCPU type='kvm' model='base' migratability='yes'>
<property name='vmx-entry-load-rtit-ctl' type='boolean' value='false'/>
@@ -416,7 +416,7 @@
<property name='kvm-steal-time' type='boolean' value='true' migratable='yes'/>
<property name='kvmclock' type='boolean' value='true' migratable='yes'/>
<property name='vmx-zero-len-inject' type='boolean' value='false'/>
- <property name='pschange-mc-no' type='boolean' value='false'/>
+ <property name='pschange-mc-no' type='boolean' value='true' migratable='yes'/>
<property name='vmx-rdrand-exit' type='boolean' value='true' migratable='yes'/>
<property name='lwp' type='boolean' value='false'/>
<property name='amd-ssbd' type='boolean' value='false'/>
--
2.23.0
5 years
[libvirt] [RFC PATCH 0/9] Introduce mediate ops in vfio-pci
by Yan Zhao
For SRIOV devices, VFs are passthroughed into guest directly without host
driver mediation. However, when VMs migrating with passthroughed VFs,
dynamic host mediation is required to (1) get device states, (2) get
dirty pages. Since device states as well as other critical information
required for dirty page tracking for VFs are usually retrieved from PFs,
it is handy to provide an extension in PF driver to centralizingly control
VFs' migration.
Therefore, in order to realize (1) passthrough VFs at normal time, (2)
dynamically trap VFs' bars for dirty page tracking and (3) centralizing
VF critical states retrieving and VF controls into one driver, we propose
to introduce mediate ops on top of current vfio-pci device driver.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
__________ register mediate ops| ___________ ___________ |
| |<-----------------------| VF | | |
| vfio-pci | | | mediate | | PF driver | |
|__________|----------------------->| driver | |___________|
| open(pdev) | ----------- | |
| |
| |_ _ _ _ _ _ _ _ _ _ _ _|_ _ _ _ _|
\|/ \|/
----------- ------------
| VF | | PF |
----------- ------------
VF mediate driver could be a standalone driver that does not bind to
any devices (as in demo code in patches 5-6) or it could be a built-in
extension of PF driver (as in patches 7-9) .
Rather than directly bind to VF, VF mediate driver register a mediate
ops into vfio-pci in driver init. vfio-pci maintains a list of such
mediate ops.
(Note that: VF mediate driver can register mediate ops into vfio-pci
before vfio-pci binding to any devices. And VF mediate driver can
support mediating multiple devices.)
When opening a device (e.g. a VF), vfio-pci goes through the mediate ops
list and calls each vfio_pci_mediate_ops->open() with pdev of the opening
device as a parameter.
VF mediate driver should return success or failure depending on it
supports the pdev or not.
E.g. VF mediate driver would compare its supported VF devfn with the
devfn of the passed-in pdev.
Once vfio-pci finds a successful vfio_pci_mediate_ops->open(), it will
stop querying other mediate ops and bind the opening device with this
mediate ops using the returned mediate handle.
Further vfio-pci ops (VFIO_DEVICE_GET_REGION_INFO ioctl, rw, mmap) on the
VF will be intercepted into VF mediate driver as
vfio_pci_mediate_ops->get_region_info(),
vfio_pci_mediate_ops->rw,
vfio_pci_mediate_ops->mmap, and get customized.
For vfio_pci_mediate_ops->rw and vfio_pci_mediate_ops->mmap, they will
further return 'pt' to indicate whether vfio-pci should further
passthrough data to hw.
when vfio-pci closes the VF, it calls its vfio_pci_mediate_ops->release()
with a mediate handle as parameter.
The mediate handle returned from vfio_pci_mediate_ops->open() lets VF
mediate driver be able to differentiate two opening VFs of the same device
id and vendor id.
When VF mediate driver exits, it unregisters its mediate ops from
vfio-pci.
In this patchset, we enable vfio-pci to provide 3 things:
(1) calling mediate ops to allow vendor driver customizing default
region info/rw/mmap of a region.
(2) provide a migration region to support migration
(3) provide a dynamic trap bar info region to allow vendor driver
control trap/untrap of device pci bars
This vfio-pci + mediate ops way differs from mdev way in that
(1) medv way needs to create a 1:1 mdev device on top of one VF, device
specific mdev parent driver is bound to VF directly.
(2) vfio-pci + mediate ops way does not create mdev devices and VF
mediate driver does not bind to VFs. Instead, vfio-pci binds to VFs.
The reason why we don't choose the way of writing mdev parent driver is
that
(1) VFs are almost all the time directly passthroughed. Directly binding
to vfio-pci can make most of the code shared/reused. If we write a
vendor specific mdev parent driver, most of the code (like passthrough
style of rw/mmap) still needs to be copied from vfio-pci driver, which is
actually a duplicated and tedious work.
(2) For features like dynamically trap/untrap pci bars, if they are in
vfio-pci, they can be available to most people without repeated code
copying and re-testing.
(3) with a 1:1 mdev driver which passthrough VFs most of the time, people
have to decide whether to bind VFs to vfio-pci or mdev parent driver before
it runs into a real migration need. However, if vfio-pci is bound
initially, they have no chance to do live migration when there's a need
later.
In this patchset,
- patches 1-4 enable vfio-pci to call mediate ops registered by vendor
driver to mediate/customize region info/rw/mmap.
- patches 5-6 provide a standalone sample driver to register a mediate ops
for Intel Graphics Devices. It does not bind to IGDs directly but decides
what devices it supports via its pciidlist. It also demonstrates how to
dynamic trap a device's PCI bars. (by adding more pciids in its
pciidlist, this sample driver actually is not necessarily limited to
support IGDs)
- patch 7-9 provide a sample on i40e driver that supports Intel(R)
Ethernet Controller XL710 Family of devices. It supports VF precopy live
migration on Intel's 710 SRIOV. (but we commented out the real
implementation of dirty page tracking and device state retrieving part
to focus on demonstrating framework part. Will send out them in future
versions)
patch 7 registers/unregisters VF mediate ops when PF driver
probes/removes. It specifies its supporting VFs via
vfio_pci_mediate_ops->open(pdev)
patch 8 reports device cap of VFIO_PCI_DEVICE_CAP_MIGRATION and
provides a sample implementation of migration region.
The QEMU part of vfio migration is based on v8
https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg05542.html.
We do not based on recent v9 because we think there are still opens in
dirty page track part in that series.
patch 9 reports device cap of VFIO_PCI_DEVICE_CAP_DYNAMIC_TRAP_BAR and
provides an example on how to trap part of bar0 when migration starts
and passthrough this part of bar0 again when migration fails.
Yan Zhao (9):
vfio/pci: introduce mediate ops to intercept vfio-pci ops
vfio/pci: test existence before calling region->ops
vfio/pci: register a default migration region
vfio-pci: register default dynamic-trap-bar-info region
samples/vfio-pci/igd_dt: sample driver to mediate a passthrough IGD
sample/vfio-pci/igd_dt: dynamically trap/untrap subregion of IGD bar0
i40e/vf_migration: register mediate_ops to vfio-pci
i40e/vf_migration: mediate migration region
i40e/vf_migration: support dynamic trap of bar0
drivers/net/ethernet/intel/Kconfig | 2 +-
drivers/net/ethernet/intel/i40e/Makefile | 3 +-
drivers/net/ethernet/intel/i40e/i40e.h | 2 +
drivers/net/ethernet/intel/i40e/i40e_main.c | 3 +
.../ethernet/intel/i40e/i40e_vf_migration.c | 626 ++++++++++++++++++
.../ethernet/intel/i40e/i40e_vf_migration.h | 78 +++
drivers/vfio/pci/vfio_pci.c | 189 +++++-
drivers/vfio/pci/vfio_pci_private.h | 2 +
include/linux/vfio.h | 18 +
include/uapi/linux/vfio.h | 160 +++++
samples/Kconfig | 6 +
samples/Makefile | 1 +
samples/vfio-pci/Makefile | 2 +
samples/vfio-pci/igd_dt.c | 367 ++++++++++
14 files changed, 1455 insertions(+), 4 deletions(-)
create mode 100644 drivers/net/ethernet/intel/i40e/i40e_vf_migration.c
create mode 100644 drivers/net/ethernet/intel/i40e/i40e_vf_migration.h
create mode 100644 samples/vfio-pci/Makefile
create mode 100644 samples/vfio-pci/igd_dt.c
--
2.17.1
5 years
