Peter Krempa [Tue, 23 Aug 2022 13:29:43 +0000 (15:29 +0200)]
virhostcpu: Fix build with clang and newest kernel headers
The most recent environment e.g. present in our Fedora Rawhide builds
fail to build the tree with clang with the following error:
../src/util/virhostcpu.c:1291:25: error: field 'header' with variable sized type 'struct kvm_msrs' not at the end of a struct or class is a GNU extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
struct kvm_msrs header;
^
The problem seems to be that clang doesn't like the new way the
'entries' field in struct kvm_msrs is declared.
To work around the issue we can simply allocate the variable dynamically
and use the 'entries' member as it was intended to to access the
members.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
qemu: Do not keep swtpm pidfile around after stopping
Just like the socket, remove the pidfile when TPM emulator is being stopped. In
order to make this a bit cleaner, try to remove it even if swtpm_ioctl does not
exist.
Laine Stump [Sun, 13 Mar 2022 18:21:02 +0000 (14:21 -0400)]
util: don't use virFirewallRuleToString() to log the rule being applied
Instead of separately building the commandline into a string to log,
just wait a few lines until we've built the virCommand object, and
call virCommandToString, which does the same thing.
(As a bonus, we were already calling virCommandToString to put the
commandline in a string in case of a failure when running it - from
the point of view of *that* usage, we're just moving the call to
virCommandToString *up* a few lines, i.e. we now only construct the
commandline string once.)
Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Laine Stump [Thu, 21 Apr 2022 21:42:30 +0000 (17:42 -0400)]
util: make virFirewallRuleToString() global
Although the next commit will eliminate the one current use of
virFirewallRuleToString(), a future commit will once again have a use
for it, but in a different source file so it will need to be a global
function rather than static. Make that change now so that we don't get
a compile error from having an unused static function in the next
commit.
(The arg list is also changed to include the name of the command as a
separate argument rather than just assuming that it can be derived
from the rule's layer (which is correct for iptables, but won't be
correct for nftables)).
Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Laine Stump [Sun, 13 Mar 2022 18:21:02 +0000 (14:21 -0400)]
util: remove unused function virFirewallApplyRuleFirewallD()
This was a wrapper to call a function in virfirewalld.c that sends an
iptables passthrough rule to firewalld. It hasn't been used in a year
or two, and won't ever be used in the future since passthrough rules
are only supported for iptables, and we've determined that we
shouldn't use iptables passthrough rules.
Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Laine Stump [Sun, 13 Mar 2022 18:21:02 +0000 (14:21 -0400)]
network: create separate config object for virNetworkDriverState
Similar to the other drivers, virNetworkDriverState now has a
virObject-derived object called virNetworkDriverConfig which is used
for config items.
As a starting point, the directory paths used by the network driver
are moved there (again, parallelling what is done for other drivers).
Using items in virNetworkDriverConfig is (yes, again) similar to using
items in the other drivers' config - anything in the config object is
immutable (once initialized), so the state object only needs to be
locked while getting a reference to the config object, and then the
members of the config object can be safely used until the config
object is unrefed.
Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Tue, 23 Aug 2022 12:35:47 +0000 (14:35 +0200)]
lib: Don't check for retval for virCommandNew*()
The virCommand module is specifically designed so that no caller
has to check for retval of individual virCommand*() APIs except
for virCommandRun() where the actual error is reported. Moreover,
virCommandNew*() use g_new0() to allocate memory and thus it's
not really possible for those APIs to return NULL. Which is why
they are even marked as ATTRIBUTE_NONNULL. But there are few
places where we do check the retval which is a dead code
effectively. Drop those checks.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Laine Stump <laine@redhat.com>
qemu: adjust memlock for multiple vfio/vdpa devices
When multiple VFIO or VDPA devices are assigned to a guest, the guest
can fail to start because the guest fails to map enough memory. For
example, the case mentioned in
https://bugzilla.redhat.com/show_bug.cgi?id=2111317 results in this
failure:
The current memlock limit calculation does not work for scenarios where
there are multiple such devices assigned to a guest. The root causes are
a little bit different between VFIO and VDPA devices.
For VFIO devices, the issue only occurs when a vIOMMU is present. In
this scenario, each vfio device is assigned a separate AddressSpace
fully mapping guest RAM. When there is no vIOMMU, the devices are all
within the same AddressSpace so no additional memory limit is needed.
For VDPA devices, each device requires the full memory to be mapped
regardless of whether there is a vIOMMU or not.
In order to enable these scenarios, we need to multiply memlock limit
by the number of VDPA devices plus the number of VFIO devices for guests
with a vIOMMU. This has the potential for pushing the memlock limit
above the host physical memory and negating any protection that these
locked memory limits are providing, but there is no other short-term
solution.
In the future, there should be have a revised userspace iommu interface
(iommufd) that the VFIO and VDPA backends can make use of. This will be
able to share locked memory limits between both vfio and vdpa use cases
and address spaces and then we can disable these short term hacks. But
this is still in development upstream.
libxl: Fix build with recent Xen that introduces new disk backend type
Xen toolstack has gained basic Virtio support recently which becides
adding various virtio related stuff introduces new disk backend type
LIBXL_DISK_BACKEND_STANDALONE [1].
Unfortunately, this caused a regression in libvirt build with Xen support
enabled, reported by the osstest today [2]:
CC libxl/libvirt_driver_libxl_impl_la-xen_xl.lo
../../src/libxl/xen_xl.c: In function 'xenParseXLDisk':
../../src/libxl/xen_xl.c:779:17: error: enumeration value 'LIBXL_DISK_BACKEND_STANDALONE'
not handled in switch [-Werror=switch-enum]
switch (libxldisk->backend) {
^~~~~~
cc1: all warnings being treated as errors
The interesting fact is that switch already has a default branch (which ought
to cover such new addition), but the error is triggered as -Wswitch-enum
gives a warning about an omitted enumeration code even if there is a default
label.
Also there is a similar issue in libxlUpdateDiskDef() which I have reproduced
after fixing the first one, but it that case the corresponding switch doesn't
have a default branch.
Fix both issues by inserting required enumeration item to make the compiler
happy and adding ifdef guard to be able to build against old Xen libraries
as well (without LIBXL_HAVE_DEVICE_DISK_SPECIFICATION). Also add a default
branch to switch in libxlUpdateDiskDef().
Please note, that current patch doesn't implement the proper handling of
LIBXL_DISK_BACKEND_STANDALONE and friends, it is just intended to fix
the regression immediately to unblock the osstest. Also it worth mentioning
that current patch won't solve the possible additions in the future.
Ján Tomko [Thu, 11 Aug 2022 16:50:00 +0000 (18:50 +0200)]
qemu: always assume QEMU_CAPS_DUMP_GUEST_MEMORY
Introduced back in 2012 by QEMU commit:
commit 783e9b4826b95e53e33c42db6b4bd7d89bdff147
introduce a new monitor command 'dump-guest-memory' to dump guest's memory
Released in QEMU 1.2.0
Signed-off-by: Ján Tomko <jtomko@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Andrea Bolognani [Wed, 17 Aug 2022 13:41:57 +0000 (15:41 +0200)]
tests: Reset macOS dyld environment
This is needed to ensure the environment variables that we need
for the test program itself, specifically to load mock libraries,
do not interfere with any command that gets invoked by it, either
directly or indirectly. We already perform the same cleanup step
for LD_* variables.
This makes the test failures
error : virCommandWait:2752 : internal error: Child process
(/usr/libexec/qemu/vhost-user/test-vhost-user-gpu --print-capabilities)
unexpected fatal signal 6: dyld[8896]: symbol not found in flat
namespace '_virQEMUCapsGet'
error : qemuVhostUserFillDomainGPU:394 : operation failed: Unable to
find a satisfying vhost-user-gpu
that were showing up on macOS 12 go away.
Signed-off-by: Andrea Bolognani <abologna@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Andrea Bolognani [Wed, 17 Aug 2022 13:37:16 +0000 (15:37 +0200)]
util: Preserve macOS dyld environment by default
The DYLD_* environment variables on macOS have the same purpose
as the LD_* variables have on Linux. Since we're preserving the
latter by default, it makes sense to do the same for the former
as well.
Signed-off-by: Andrea Bolognani <abologna@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Michal Privoznik [Thu, 11 Aug 2022 18:57:02 +0000 (20:57 +0200)]
qemu_tpm: Don't crash if qemuTPMPcrBankBitmapToStr(NULL)
Historically, the tpm->data.emulator.activePcrBanks member was an
unsigned int but since it was used as a bitmap it was converted
to virBitmap type instead. Now, the virBitmap is allocated inside
of virDomainTPMDefParseXML() but only if <activePcrBanks/> was
found with at last one child element. Otherwise it stays NULL.
Fast forward to starting a domain with TPM 2.0 and no
<activePcrBanks/> configured. Eventually,
qemuTPMEmulatorBuildCommand() is called, which subsequently calls
qemuTPMEmulatorReconfigure() and finally
qemuTPMPcrBankBitmapToStr() passing the NULL value. Before
rewrite to virBitmap this function would return NULL for empty
activePcrBanks but now, well, now it crashes.
Fixes: 52c7c31c8038aa31d502f59a40e4fb4ba9f61113 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Amneesh Singh [Thu, 18 Aug 2022 03:17:20 +0000 (08:47 +0530)]
qemu_driver: use qemuMonitorQueryStats to extract halt poll time
This patch uses qemuMonitorQueryStats to query "halt_poll_success_ns"
and "halt_poll_fail_ns" for every vCPU. The respective values for each
vCPU are then added together.
Signed-off-by: Amneesh Singh <natto@weirdnatto.in> Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
This patch adds an API for the "query-stats" QMP command.
The query returns a JSON containing the statistics based on the target,
which can either be vCPU or VM, and the providers. The API deserializes
the query result into an array of GHashMaps, which can later be used to
extract all the query statistics. GHashMaps are used to avoid traversing
the entire array to find the statistics you are looking for. This would
be a singleton array if the target is a VM since the returned JSON is
also a singleton array in that case.
Signed-off-by: Amneesh Singh <natto@weirdnatto.in> Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Since we cannot properly plug a new VM into the distributed switch, we can at
least report the provided pieces of information, so that XML editing still works
even for VMs with such interfaces.
vmx: Require networkName for bridged and custom NICs
Commit 70768cda9740 marked this particular config string optional, but
forgot that two of the interface types still require this name to
exist. Mark it as optional only if there is no connectionType.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com> Reviewed-by: Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit 70768cda9740 added a functionality that was previously (in an unsubmitted
version of the commit) represented differently in the XML, but the filenames
kept the old name. Fix the name so they are not misleading.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com> Reviewed-by: Reviewed-by: Ján Tomko <jtomko@redhat.com>
Jim Fehlig [Thu, 11 Aug 2022 22:36:24 +0000 (16:36 -0600)]
schema: Add maxphysaddr element to hostcpu
The output of "virsh capabilities" was not conformant to the
capability.rng schema. Add the missing element to the schema.
Fixes: c647bf29afb9890c792172ecf7db2c9c27babbb6 Signed-off-by: Tim Wiederhake <twiederh@redhat.com> Signed-off-by: Jim Fehlig <jfehlig@suse.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Jim Fehlig [Thu, 11 Aug 2022 22:13:36 +0000 (16:13 -0600)]
schema: Remove optional nesting in hostcpu rng
The hostcpu rng has an optional "model" element, with the remaining
elements each within a nested optional. Remove the optional nesting
and have each element explicitly listed as optional
Signed-off-by: Jim Fehlig <jfehlig@suse.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
While we assume that -blockdev is supported the validator had also some
corner cases for -drive. Since we use '-drive' exclusively for the
extremely rarely used SD cards it makes no sense to have the validation.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Thu, 21 Jul 2022 13:25:24 +0000 (15:25 +0200)]
qemu: command: Generate -drive for SD cards via JSON props
Since we know we have a modern qemu at hand which can interpret the
dotted syntax, we can format the -drive needed for SD cards via the
common infrastructure we have for all blockdev stuff.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Peter Krempa [Wed, 20 Jul 2022 09:26:12 +0000 (11:26 +0200)]
qemu: monitor: Remove unused qemuMonitorQueryNamedBlockNodes and clean up
The top level API is unused so it can be removed but internally the JSON
version is called by other monitor commands which extract information
from the reply.
Thus qemuMonitorJSONQueryNamedBlockNodes is unexported and moved
appropriately.
Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
projects / thirdparty / libvirt.git / log
