One of the mitigation methods for TAA[1] is to disable TSX
support on the host system. Linux added a mechanism to disable
TSX globally through the kernel command line, and many Linux
distributions now default to tsx=off. This makes existing CPU
models that have HLE and RTM enabled not usable anymore.
Add new versions of all CPU models that have the HLE and RTM
features enabled, that can be used when TSX is disabled in the
host system.
On systems disabling the features without those types defined
in cpu-maps users end up without modern CPU types in the list
of usable CPUs to use in the likes of virsh domcapabilities
or tools higher in the stack like virt-manager.
This adds:
-Cascadelake-Server-noTSX
-Icelake-Client-noTSX
-Icelake-Server-noTSX
-Skylake-Server-noTSX-IBRS
-Skylake-Client-noTSX-IBRS
Introduced in QEMU by commit v4.2.0-rc2-3-g9ab2237f19 (function)
and commit v4.2.0-rc2-4-g02fa60d101 (names)
References:
[1] TAA, TSX asynchronous Abort:
https://software.intel.com/security-software-guidance/insights/deep-dive-intel-transactional-synchronization-extensions-intel-tsx-asynchronous-aborthttps://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/tsx_async_abort.html
Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1853200
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Message-Id: <20200310104806.2723-2-christian.ehrhardt@canonical.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Use qemuAgentCommandFull so that callers of qemuAgentGetFSInfo can
suppress error reports if the function is not supported by the guest
agent.
Since this patch removes the last use of
qemuAgentErrorCommandUnsupported the whole function is deleted as well.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use qemuAgentCommandFull so that callers of qemuAgentGetTimezone can
suppress error reports if the function is not supported by the guest
agent.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use qemuAgentCommandFull so that callers of qemuAgentGetOSInfo can
suppress error reports if the function is not supported by the guest
agent.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Use qemuAgentCommandFull so that callers of qemuAgentGetUsers can
suppress error reports if the function is not supported by the guest
agent.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Unfortunately, advisory record locking lose the lock if any fd refering
to the file is closed. There doesn't seem to be a way to preserve the
lock atomically. We could eventually retake the lock if low pidfilefd
is required.
This fixes processes being leaked, as they are not killed in
virPidFileForceCleanupPath() if the lock can be taken. Here also, we may
consider this is not good enough, as a process may leak by simply
closing the pidfilefd.
Fixes commit d146105f1e ("virCommand:
Actually acquire pidfile instead of just writing it")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Our virCommand module allows us to set a pidfile for commands we
want to spawn. The caller constructs the string of pidfile path
and then uses virCommandSetPidFile() to tell the module to write
the pidfile once the command is ran. This usually works, but has
two flaws:
1) the child process does not hold the pidfile open & locked.
Therefore, the caller (or anybody else) can't use our fancy
virPidFileForceCleanupPath() function to kill the command
afterwards. Also, for everybody else on the system it's
needlessly harder to check if the pid from the pidfile is still
alive or not.
2) if the caller ever makes a mistake and passes the same pidfile
path for two different commands, the start of the second command
will overwrite the pidfile even though the first command might
still be running.
NOTE that this temporarily renders some command spawning
unusable, specifically those code patterns where both
virCommandSetPidFile() is used together with instructing spawned
command to acquire pidfile itself. Fortunately, there is only one
occurrence of such pattern and it is in
qemuProcessStartManagedPRDaemon(). This is fixed in next commit.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
As a part of c799d150d5 I've introduced a test case that
tests whether passing error object between processes works. The
test spawns a child which reports a system error, parent process
then reads the error and compares with expected output. Problem
with this approach is that error message contains stringified
errno which is not portable. FreeBSD has generally different
messages than Linux. Therefore, use g_strerror() to do the errno
to string translation for us.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Our code allows snapshots of NVMe based disks which means we create
overlay file with a 'json:{}' pseudo-uri refering to the NVME device.
Our parser code doesn't handle them though. Add the parser and test it
via the XML->json->XML round-trip and reference data.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Format cookies into the backing store string without encryption as they
will not be visible on the command line when formatting a 'target' only
string. In cases when cookies or other options are used we must use the
JSON format rather than pure URI.
Add tests to validate the scenario.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
QEMU requires an extra wrapper object where only the "file" member is
populated. This is basically a placeholder for establishing the format
layer. We did the same in qemuDiskSourceGetProps for the old-school
JSON usage with -drive but forgot to adopt this for -blockdev.
https://bugzilla.redhat.com/show_bug.cgi?id=1804617
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
qemublocktest showed that we don't add the "fat:" prefix for directory
storage when formatting the backing store string. While it's unlikely to
be used it's simple enough to actually implement the support rather than
trying to forbid it.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
With -blockdev libvirt provides the string which is recorded as
'backing store' property of an image to qemu. Add testing for
qemuBlockGetBackingStoreString which generates these strings as there's
logic which determines which format to use.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
We had two non-syncrhonized arrays holding the individual data. This was
a lazy way to do it when I was adding new tests recently. Since it's
hard to extend with new data to test refactor the storage of test data
to use a new struct where all per-image data are kept and can be
extended easily.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The function was misplaced. Group it together with other helper
functions for testing disk XML to qemu JSON props conversion.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use automatic variable clearing and remove the cleanup sections of
testQemuDiskXMLToProps, testQemuDiskXMLToPropsValidateSchema and
testQemuDiskXMLToPropsValidateFile.
testQemuDiskXMLToPropsValidateFileSrcOnly already uses new helpers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Based on the configuration from the only qemuxml2argv test.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
virHostCPUGetStatsLinux walks through every cpu in /proc/stat until it
finds cpu%cpuNum that matches with the requested cpu.
If none is found it logs the error but it should return -1, instead of 0.
Otherwise virsh nodecpustats --cpu <invalid cpu number> and API bindings
don't fail properly, printing a blank line instead of an error message.
This patch also includes an additional test for virhostcputest to avoid
this regression to happen again in the future.
Fixes: 93af79fba3
Reported-by: Satheesh Rajendran <satheera@in.ibm.com>
Signed-off-by: Mauro S. M. Rodrigues <maurosr@linux.vnet.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Tested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Using the 'uuid' element for ppc64 NVDIMM memory added in the
previous patch, use it in qemuBuildMemoryDeviceStr() to pass
it over to QEMU.
Another ppc64 restriction is the necessity of a mem->labelsize,
given than ppc64 only support label-area backed NVDIMMs.
Finally, we don't want ppc64 NVDIMMs to align up due to the
high risk of going beyond the end of file with a 256MiB
increment that the user didn't predict. Align it down
instead. If target size is less than the minimum of
256MiB + labelsize, error out since QEMU will error out
if we attempt to round it up to the minimum.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
ppc64 NVDIMM support was implemented in QEMU by commit [1].
The support is similar to what x86 already does, aside from
an extra 'uuid' element.
This patch introduces a new optional 'uuid' element for the
NVDIMM memory model. This element behaves like the 'uuid'
element of the domain definition - if absent, we'll create
a new one, otherwise use the one provided by the XML.
The 'uuid' element is exclusive to pseries guests and are
unavailable for other architectures.
Next patch will use this new element to add NVDIMM support
for ppc64.
[1] ee3a71e366
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Update ppc64 capabilities to pick up the new NVDIMM capability
support for ppc64.
Since the ppc64 capabilities weren't updated for some time, the
bulk of the changes here are related to the blockdev support
(see commit c6a9e54ce3 for info) that we are picking up just
now.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The functionality is now provided by glib's GKeyFile.
Signed-off-by: Rafael Fonseca <r4f4rfs@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
When running a function in a forked child, so far the only thing
we could report is exit status of the child and the error
message. However, it may be beneficial to the caller to know the
actual error that happened in the child.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Mores <pmores@redhat.com>
Validate that we are able to parse back the dotted syntax arrays we were
generating in the pre-blockdev era.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
virBitmapNewEmpty can't fail now so we can make it obvious and fix all
callers.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
qemuBlockStorageSourceGetFormatRawProps aggregated both formats but
since we now have props specific for either of those formats it's
unwanted to aggregate the code such way. Split out the 'luks' props
formatter into qemuBlockStorageSourceGetFormatLUKSProps.
The wrong separation demonstrates istself on formatting of the 'size'
and 'offset' attributes for the 'luks' driver which does not conform
to the qapi schema.
https://bugzilla.redhat.com/show_bug.cgi?id=1814975
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The 'luks' driver in qemu is as any other non-raw format driver and thus
doesn't support the properties for 'slice'. Since libvirt considers
luks files to be raw+encryption we need to special case them when
dealing with the slice.
https://bugzilla.redhat.com/show_bug.cgi?id=1814975
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since libvirt handles the luks encryption in a weird special way
(raw+encryption) we should really test that case with slices as well.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Since the removal of gnulib, HAVE_SOCKETPAIR is no more defined, making
these two tests effectively skipped.
Use the same strategy used in other generic library bits, i.e. exclude
the socketpair usage on Windows.
Semi-related change in virnetdaemontest.c to make it build: since
virutil.h does not include unistd.h anymore, we need to include it.
Signed-off-by: Pino Toscano <ptoscano@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
It seems like CD-ROMs may have no 'fileName' property specified in case
there is nothing configured as attachment for the drive. Hence, make
sure that virVMXParseDisk() do not consider it mandatory anymore,
considering it an empty block cdrom device. Sadly virVMXParseDisk() is
used also to parse disk and floppies, so make sure that a NULL fileName
is handled in cdrom- and floppy-related paths.
https://bugzilla.redhat.com/show_bug.cgi?id=1808610
Signed-off-by: Pino Toscano <ptoscano@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
So far, when using the qemu:///embed driver, management
applications can't chose whether they want to register their
domains in machined or not. While having that option is certainly
desired, it will require more work. What we can do meanwhile is
to generate names that include part of hash of the root
directory. This is to ensure that if two applications using
different roots but the same domain name (and ID) start the
domain no clashing name for machined is generated.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Some branches were not covered and thus we didn't catch that the bitmaps
are not re-enabled if nothing is merged into them. Two bitmaps are
necessary to reliably test the case due to hash table ordering.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Use the 'snapshots-synthetic-broken' test data for block-commit.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Test handling of more complex cases of merging bitmaps accross
snapshots.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Add code for testing the two necessary steps of handling bitmaps during
block commit and exercise the code on the test data which we have for
bitmap handling.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Set the 'id' field of the backing chain properly so that we can look
up images, and initialize 6 images instead of 10 as we don't use more
currently.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Starting a commit job will require disabling bitmaps in the base image
so that they are not dirtied by the commit job. We need to store a list
of the bitmaps so that we can later re-enable them.
Add a field and status XML handling code as well as a test.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Add sample data files for validating handling of a QEMU guest started
with:
-smp 7,maxcpus=16,sockets=2,dies=2,cores=2,threads=2
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We currently don't model the 'ssh' protocol properties properly and
since it seems impossible for now (agent path passed via environment
variable). To allow libguestfs to work as it used in pre-blockdev era we
must carry the properties over to the command line. For this instance we
just store it internally and format it back.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add testing of the interpretation of the JSON pseudo-protocol backing
store into JSON structs for blockdev. This will be used to test JSON
pseudo-URIs used by libguestfs while actually also validating the output
against the QMP schema. Since libguestfs uses obsolete/undocumented
values the outputs will differ and a benefit is that modern output is
used now.
The example test case covers the fields and values used by libguestfs
when using the https driver.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The test was invoking the JSON formatter with the 'legacy' flag thus
formatting bunch of obsolete JSON blockdev definitions. We also should
test the modern ones. Add a boolean and re-run all the tests in both
cases.
Additionally for any modern invocation we should also validate that the
output conforms to the QAPI schema.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Move lookup of the schema root earlier so that multiple functions
can use it for validation.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Multiple tests require the schema. Extract the loading into a separate
variable to avoid issues with ownership of the pointer.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
libguestfs abuses a quirk of qemu's parser to accept also other variants
of the 'sslverify' field which would be valid on the command line but
are not documented in the QMP schema.
If we encounter the 'off' string instead of an boolean handle it rather
than erroring out to continue support of pre-blockdev configurations.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Add support for parsing the recently added fields from backing file
pseudo-protocol strings.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Pass the alias of the secret object holding the cookie data as
'cookie-secret' to qemu.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The http cookies can have potentially sensitive values and thus should
not be leaked into the command line. This means that we'll need to
instantiate a 'secret' object in qemu to pass the value encrypted.
This patch adds infrastructure for storing of the alias in the status
XML.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Allow disabling of SSL certificate validation for HTTPS and FTPS drives
in qemu.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
