The hint was introduced a long time ago when broken TSX implementation
was found in Haswell and Broadwell CPUs. Since then many more CPUs with
TSX were introduced and and disabled due to TAA vulnerability.
Thus the hint is not very useful and I think removing it is a better
choice then updating it to cover all current noTSX models.
This partially reverts:
commit 7f127ded65
cpu: Rework cpuCompare* APIs
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The element specifies whether a particular CPU model can be used when
creating a CPU definition from raw CPUID/MSR data. The @host attribute
determines whether the CPU model can be used (host='on') for creating
CPU definition for host capabilities. Usability of the model for domain
capabilities and host-model CPU definitions is controlled by the @guest
attribute.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Tested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
The check attribute was completely ignored for host-passthrough CPUs
even if they explicitly requested some features to be enabled. For
example, a domain with the following CPU definition
<cpu mode='host-passthrough' check='full'>
<feature policy='require' name='svm'/>
</cpu>
would happily start even when 'svm' cannot be enabled.
Let's call virCPUArchUpdateLive for host-passthrough CPUs with
VIR_CPU_CHECK_FULL to make sure the architecture specific code can
validate the provided virtual CPU against the desired definition.
https://bugzilla.redhat.com/show_bug.cgi?id=1515677
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Adding more checks into the existing if statements would turn them into
an unreadable mess.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
The updateLive CPU sub-driver function is supposed to be called only for
a subset of CPU definitions. Let's make it more obvious by turning a
negative test and return into a positive check.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Whenever there is a guest CPU configured in domain XML, we will call
some CPU driver APIs to validate the CPU definition and check its
compatibility with the hypervisor. Thus domains with guest CPU
specification can only be started if the guest architecture is supported
by the CPU driver. But we would add a default CPU to any domain as long
as QEMU reports it causing failures to start any domain on affected
architectures.
https://bugzilla.redhat.com/show_bug.cgi?id=1805755
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Always trim the full specified suffix.
All of the callers outside of tests were passing either
strlen or the actual length of the string.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
The virCapabilitiesGetNodeInfo() function has the usual return
value semantics for integeres: a negative value means an error,
zero or a positive value means success. However, the function
call done in virCPUProbeHost() doesn't check for the return value
accordingly.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Recently CPU hardware vendors have started to support a new structure
inside the CPU package topology known as a "die". Thus the hierarchy
is now:
sockets > dies > cores > threads
This adds support for "dies" in the XML parser, with the value
defaulting to 1 if not specified for backwards compatibility.
For example a system with 64 logical CPUs might report
<topology sockets="4" dies="2" cores="4" threads="2"/>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
bhyveargv2xmlmock calls virBhyveCapsBuild which in turn
calls virCPUProbeHost, probing the real host CPU. This
causes a test failure if the host CPU happens to contain
the 'arch-capabilities' feature as it triggers a call
to virHostCPUGetMSR() which fails on FreeBSD.
Fortunately we already have convenient code for mocking
the host CPU probing.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The x86ModelParseSignatures function makes an assumption that CPU signature
model equals 0 as an invalid case. While in Hygon processor definition, A1
version (model 0, stepping 1) is mass production version, to support Hygon
Dhyana A1 version, we have removed CPU signature model zero checking condition.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Yingle Hou <houyingle@hygon.cn>
Annoyingly there was no existing constructor, and identifying all the
places which do a VIR_ALLOC(cpu) is a bit error prone. Hopefully this
has found & converted them all.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
The match attribute is only relevant for custom mode CPUs. Reporting
failure when match == 'minimum' regardless on CPU mode can cause
unexpected failures. We should only report the error for custom CPUs. In
fact, calling virCPUs390Update on a custom mode CPU should always report
an error as optional features are not supported on s390 either.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
For now we only perform very basic validation, such as making sure
that the user is not trying to enable/disable unknown CPU features
and the like.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Tested-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The function now does not return an error so we can drop it fully.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Replace all occurrences of
if (VIR_STRDUP(a, b) < 0)
/* effectively dead code */
with:
a = g_strdup(b);
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Since commit 44e7f02915
util: rewrite auto cleanup macros to use glib's equivalent
VIR_AUTOFREE is just an alias for g_autofree. Use the GLib macros
directly instead of our custom aliases.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Also define the macro for building with GLib older than 2.60
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use G_GNUC_UNUSED from GLib instead of ATTRIBUTE_UNUSED.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Implement an XML to virCPUDefPtr helper that handles the ctxt
prerequisite for virCPUDefParseXML.
This does not alter any functionality.
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.ibm.com>
Reviewed-by: Daniel Henrique Barboza <danielh413@gmail.com>
Message-Id: <1568924706-2311-14-git-send-email-walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Support 'Direct Mode' for Hyper-V Synthetic Timers in domain config.
Make it 'stimer' enlightenment option as it is not a separate thing.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Some Hyper-V features (like the upcoming Direct Synthetic timers) are
announced by feature bits in Edx but KVM_FEATURE_DEF() supports only Eax.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
hv-spinlocks is not a CPUID feature and should not be checked as such.
While starting a domain with hv-spinlocks enabled, we would report a
warning about unsupported hyperv spinlocks feature even though it was
set properly.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Originally the names of the KVM CPU features were only used internally
for looking up their CPUID bits. So we used "__kvm_" prefix for them to
make sure the names do not collide with normal CPU features stored in
our CPU map.
But with QEMU 4.1 we check which features were enabled or disabled by a
freshly started QEMU process using their names rather than their CPUID
bits (mostly because of MSR features). Thus we need to change our made
up internal names into the actual names used by QEMU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Most of the internally defined KVM CPUID features are not actually used
by libvirt. The QEMU driver may enable or disable them on the command
line, but we don't check for the associated CPU properties or CPUID
bits. They would be useless with QEMU 4.1 anyway since their names were
only remotely similar to the actual feature names.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
All the features are hyperv features even though they are provided by
KVM with QEMU. The "KVM" part in the macro names does not make a lot of
sense.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Originally the names of the hyperv CPU features were only used
internally for looking up their CPUID bits. So we used "__kvm_hv_"
prefix for them to make sure the names do not collide with normal CPU
features stored in our CPU map.
But with QEMU 4.1 we check which features were enabled or disabled by a
freshly started QEMU process using their names rather than their CPUID
bits (mostly because of MSR features). Thus we need to change our made
up internal names into the actual names used by QEMU. Most of the names
are only used with QEMU 4.1 and newer and the reset was introduced with
QEMU recently enough to already support spelling with "-". Thus we don't
need to define them as "hv_*" with a translation to "hv-*" for new QEMU.
Without this patch libvirt would mistakenly report all hyperv features
as unavailable and refuse to start any domain using them with QEMU 4.1.
Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Tested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Commit 9c9620af called x86DataAdd without checking for an error,
so add the error checking.
Found by Coverity
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Commit 56b254dcc called virCPUx86DataAdd, but returned -1 directly
without calling the virCPUx86DataFree.
Found by Coverity.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This is used by the host capabilities code to construct host CPU
definition.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This functions may be used as a virCPUDefFeatureFilter callbacks for
virCPUDefCheckFeatures, virCPUDefFilerFeatures, and similar functions to
select (virCPUx86FeatureFilterSelectMSR) or drop
(virCPUx86FeatureFilterDropMSR) features reported via MSR.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Until now, this was a macro usable for direct initialization when a
variable is defined. Turning the macro into a function makes it more
general.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This is a generic replacement for the former virCPUx86DataAddFeature,
which worked on the generic virCPUDataPtr anyway.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
When the host CPU supports invariant TSC the host CPU definition created
by virCPUx86GetHost will contain (unless probing fails for some reason)
addition TSC related data.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Commit 0a97486e09 moved them outside #ifdef, but after virCPUx86GetHost,
which will start calling them in the following patch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
They were introduced by commit 0a97486e09 when moving functions.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
In e17d10386 these functions were mistakenly moved into an #ifdef
block, but remained used outside of it leaving the build broken
for platforms where #ifdef evaluated to false.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
They are static and we will need to call them a little bit closer to the
beginning of the file.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
