Commit Graph

20 Commits

Author SHA1 Message Date
Wei Huang
2c9d535a2e kvm_stat: Update exit reasons to the latest defintion
This patch updates the exit reasons for x86_vmx, x86_svm, and userspace
to the latest definition.

Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-01-26 12:27:04 +01:00
Wei Huang
edcbc401f4 kvm_stat: Add aarch64 support
This patch enables aarch64 support for kvm_stat. The platform detection
is based on OS uname.

Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-01-26 12:27:04 +01:00
Michael Ellerman
4725398f93 kvm_stat: Add powerpc support
Add support for powerpc platforms. We use uname -m, which allows us to
detect ppc, ppc64 and ppc64le/el.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-31 16:36:23 +01:00
Michael Ellerman
a15d5642a0 kvm_stat: Abstract ioctl numbers
Unfortunately ioctl numbers are platform specific, so abstract them out
of the code so they can be overridden. As it happens x86 and s390 share
the same values, so nothing needs to change yet.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-31 16:35:15 +01:00
Michael Ellerman
4d4103ff32 kvm_stat: Rework platform detection
The current platform detection is a little bit messy. We look for lines
in /proc/cpuinfo starting with 'flags' OR 'vendor-id', and scan both
for values we know will only occur in one or the other. We also keep
scanning once we've found a value, which could be a feature, but isn't
in this case.

We'd also like to add another platform, powerpc, which will just make it
worse. So clean it up in preparation.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-31 16:34:21 +01:00
Michael Ellerman
27d318a885 kvm_stat: Fix the non-x86 exit reasons
In kvm_stat we have a dictionary of exit reasons for s390. Firstly these
are not s390 specific, they are the generic exit reasons. So rename the
dictionary to reflect that, and add it separately to filters[].

Secondly, the values are defined using hex, but in the kernel header
they are decimal. That means values above 9 in kvm_stat are incorrect.

While we're there, fix the whitespace to match the rest of the file.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-31 16:32:07 +01:00
Michael Ellerman
763952d08b kvm_stat: Only consider online cpus
In kvm_stat we grovel through /sys to find out how many cpus are in the
system. However if a cpu is offline it will still be present in /sys,
and the perf_event_open() will fail.

Modify the logic to only return online cpus. We need to be careful on
systems which don't support cpu hotplug, the online file will not be
present at all.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-10-31 16:13:21 +01:00
Adrian-Ken Rueegsegger
c5d1e2cce3 vmxcap: Update according to SDM of September 2014
This adds reporting of RDSEED exiting and XSAVES/XRSTORS #UD and fixes
the range of VMCS revision as well as some typos.

Signed-off-by: Adrian-Ken Rueegsegger <ken@codelabs.ch>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-09-26 21:08:56 +04:00
Paolo Bonzini
b763adf1a6 kvm_stat: allow choosing between tracepoints and old stats
The old stats contain information not available in the tracepoints.
By default, keep the old behavior, but allow choosing which set of stats
to present, or even both.

Inspired by a patch from Marcelo Tosatti.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-21 17:56:37 +02:00
Jan Kiszka
007e986ff2 vmxcap: Update according to SDM of January 2013
This adds reporting of VMCS shadowing, #VE, IA32_SMBASE, unrestricted
VMWRITE and fixes the range of the MSEG revision ID.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-04-17 23:27:24 -03:00
Jan Kiszka
614413f7f9 vmxcap: Report APIC register emulation and RDTSCP control
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-04-17 23:27:24 -03:00
Jan Kiszka
ea4ee28399 vmxcap: Augment reported information
Parse the Basic VMX Information MSR and add the bit for the new posted
interrupts.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
2013-04-17 23:27:24 -03:00
Jan Kiszka
f505a4d74a vmxcap: Open MSR file in unbuffered mode
Python may otherwise decide to to read larger chunks, applying the seek
only on the software buffer. This will return results from the wrong
MSRs.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
2013-04-17 23:27:23 -03:00
Marcelo Tosatti
f9e90c798d vmxcap: bit 9 of VMX_PROCBASED_CTLS2 is 'virtual interrupt delivery'
Bit 9 of MSR_IA32_VMX_PROCBASED_CTLS2 is
virtual interrupt delivery.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2013-01-21 23:11:27 -02:00
Heinz Graalfs
1b3e6f88dc s390/kvm_stat: correct sys_perf_event_open syscall number
Correct sys_perf_event_open syscall number for s390 architecture
   - the hardcoded syscall number 298 is for x86 but should
     be different for other architectures.
     In case we figure out via /proc/cpuinfo that we are running
     on s390 the appropriate syscall number is used from map
     syscall_numbers; other architectures can extend this.

Signed-off-by: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2012-10-29 19:41:55 +01:00
Jens Freimann
c5854acb75 s390: make kvm_stat work on s390
Add s390_exit_reasons so kvm_stat doesn't crash when called on s390.
Look for 'vendor_id' in /proc/cpuinfo as well, instead of just for
'flags', so we can determine if we run on S390.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2012-06-18 15:32:45 +02:00
Avi Kivity
287d55c676 kvm: update vmxcap for EPT A/D, INVPCID, RDRAND, VMFUNC
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-05-17 23:30:02 -03:00
Stefan Hajnoczi
b3c09bde48 kvm: add flightrecorder script
The kvm kernel module includes a number of trace events which can be
useful when debugging system behavior.  Even on production systems these
trace events can be used to observe guest behavior and identify the
source of problems.

The kvm_flightrecorder script is a command-line wrapper for the
/sys/kernel/debug/tracing interface.  Kernel symbols do not need to be
installed.

This script captures a fixed-size buffer of KVM trace events.  Recent
events overwrite the oldest events when the buffer size is exceeded and
it is possible to leave KVM tracing enabled for any period of time with
just a fixed-size buffer.  If the buffer is large enough this script is
a useful tool for collecting detailed information after an issue occurs
with a guest.  Hence the name "flight recorder".

The script can also be used in 'tail' mode to simply view KVM trace
events as they occur.  This is handy for development and to ensure that
the guest is indeed running.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-04-12 19:01:41 -03:00
Jan Kiszka
626c427624 kvm: Add top-like kvm statistics script
Taken from original qemu-kvm/kvm/kvm_stat.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-10-24 21:26:53 -02:00
Jan Kiszka
5f6caa4f2b kvm: Add tool for querying VMX capabilities
Taken from original qemu-kvm/kvm/scripts/vmxcap.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-10-24 21:26:53 -02:00