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  1. 25 5月, 2020 3 次提交
  3. 24 3月, 2020 1 次提交
  5. 20 3月, 2020 1 次提交
  7. 17 3月, 2020 1 次提交
    • D
      virhostcpu.c: fix 'die_id' parsing for Power hosts · 0137bf0d
      由 Daniel Henrique Barboza 提交于 
      Commit 7b79ee2f makes assumptions about die_id parsing in
the sysfs that aren't true for Power hosts. In both Power8
and Power9, running 5.6 and 4.18 kernel respectively,
'die_id' is set to -1:

$ cat /sys/devices/system/cpu/cpu0/topology/die_id
-1

This breaks virHostCPUGetDie() parsing because it is trying to
retrieve an unsigned integer, causing problems during VM start:

virFileReadValueUint:4128 : internal error: Invalid unsigned integer
value '-1' in file '/sys/devices/system/cpu/cpu0/topology/die_id'

This isn't necessarily a PowerPC only behavior. Linux kernel commit
0e344d8c70 added in the former Documentation/cputopology.txt, now
Documentation/admin-guide/cputopology.rst, that:

  To be consistent on all architectures, include/linux/topology.h
  provides default definitions for any of the above macros that are
  not defined by include/asm-XXX/topology.h:

  1) topology_physical_package_id: -1
  2) topology_die_id: -1
  (...)

This means that it might be expected that an architecture that
does not implement the die_id element will mark it as -1 in
sysfs.

It is not required to change die_id implementation from uInt to
Int because of that. Instead, let's change the parsing of the
die_id in virHostCPUGetDie() to read an integer value and, in
case it's -1, default it to zero like in case of file not found.
This is enough to solve the issue Power hosts are experiencing.

Fixes: 7b79ee2fSigned-off-by: NDaniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: NMichal Privoznik <mprivozn@redhat.com>
      0137bf0d
  9. 14 3月, 2020 1 次提交
  11. 29 1月, 2020 1 次提交
  13. 17 1月, 2020 3 次提交
  15. 16 1月, 2020 1 次提交
    • D
      hostcpu: add support for reporting die_id in NUMA topology · 7b79ee2f
      由 Daniel P. Berrangé 提交于 
      Update the host CPU code to report the die_id in the NUMA topology
capabilities. On systems with multiple dies, this fixes the bug
where CPU cores can't be distinguished:

 <cpus num='12'>
   <cpu id='0' socket_id='0' core_id='0' siblings='0'/>
   <cpu id='1' socket_id='0' core_id='1' siblings='1'/>
   <cpu id='2' socket_id='0' core_id='0' siblings='2'/>
   <cpu id='3' socket_id='0' core_id='1' siblings='3'/>
 </cpus>

Notice how core_id is repeated within the scope of the same socket_id.

It now reports

 <cpus num='12'>
   <cpu id='0' socket_id='0' die_id='0' core_id='0' siblings='0'/>
   <cpu id='1' socket_id='0' die_id='0' core_id='1' siblings='1'/>
   <cpu id='2' socket_id='0' die_id='1' core_id='0' siblings='2'/>
   <cpu id='3' socket_id='0' die_id='1' core_id='1' siblings='3'/>
 </cpus>

So core_id is now unique within a (socket_id, die_id) pair.
Reviewed-by: NDaniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: NJiri Denemark <jdenemar@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>
      7b79ee2f
  17. 07 1月, 2020 1 次提交
  19. 10 12月, 2019 1 次提交
  21. 15 11月, 2019 1 次提交
  23. 13 11月, 2019 1 次提交
  25. 12 11月, 2019 1 次提交
  27. 15 10月, 2019 2 次提交
  29. 07 10月, 2019 1 次提交
  31. 04 6月, 2019 1 次提交
    • J
      util: Add virHostCPUGetTscInfo · f0f6faba
      由 Jiri Denemark 提交于 
      On a KVM x86_64 host which supports invariant TSC this function can be
used to detect the TSC frequency and the availability of TSC scaling.

The magic MSR numbers required to check if VMX scaling is supported on
the host are documented in Volume 3 of the Intel® 64 and IA-32
Architectures Software Developer’s Manual.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
      f0f6faba
  33. 15 4月, 2019 2 次提交
  35. 13 4月, 2019 1 次提交
  37. 14 12月, 2018 3 次提交
    • D
      Enforce a standard header file guard symbol name · 568a4172
      由 Daniel P. Berrangé 提交于 
      Require that all headers are guarded by a symbol named

  LIBVIRT_$FILENAME

where $FILENAME is the uppercased filename, with all characters
outside a-z changed into '_'.

Note we do not use a leading __ because that is technically a
namespace reserved for the toolchain.
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>
      568a4172
    • D
      Fix many mistakes & inconsistencies in header file layout · 4cfd7090
      由 Daniel P. Berrangé 提交于 
      This introduces a syntax-check script that validates header files use a
common layout:

  /*
   ...copyright header...
   */
  <one blank line>
  #ifndef SYMBOL
  # define SYMBOL
  ....content....
  #endif /* SYMBOL */

For any file ending priv.h, before the #ifndef, we will require a
guard to prevent bogus imports:

  #ifndef SYMBOL_ALLOW
  # error ....
  #endif /* SYMBOL_ALLOW */
  <one blank line>

The many mistakes this script identifies are then fixed.
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>
      4cfd7090
    • D
      Remove all Author(s): lines from source file headers · 60046283
      由 Daniel P. Berrangé 提交于 
      In many files there are header comments that contain an Author:
statement, supposedly reflecting who originally wrote the code.
In a large collaborative project like libvirt, any non-trivial
file will have been modified by a large number of different
contributors. IOW, the Author: comments are quickly out of date,
omitting people who have made significant contribitions.

In some places Author: lines have been added despite the person
merely being responsible for creating the file by moving existing
code out of another file. IOW, the Author: lines give an incorrect
record of authorship.

With this all in mind, the comments are useless as a means to identify
who to talk to about code in a particular file. Contributors will always
be better off using 'git log' and 'git blame' if they need to  find the
author of a particular bit of code.

This commit thus deletes all Author: comments from the source and adds
a rule to prevent them reappearing.

The Copyright headers are similarly misleading and inaccurate, however,
we cannot delete these as they have legal meaning, despite being largely
inaccurate. In addition only the copyright holder is permitted to change
their respective copyright statement.
Reviewed-by: NErik Skultety <eskultet@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>
      60046283
  39. 20 9月, 2018 2 次提交
  41. 14 8月, 2018 3 次提交
  43. 23 7月, 2018 1 次提交
    • A
      src: Make virStr*cpy*() functions return an int · 6c0d0210
      由 Andrea Bolognani 提交于 
      Currently, the functions return a pointer to the
destination buffer on success or NULL on failure.

Not only does this kind of error handling look quite
alien in the context of libvirt, where most functions
return zero on success and a negative int on failure,
but it's also somewhat pointless because unless there's
been a failure the returned pointer will be the same
one passed in by the user, thus offering no additional
value.

Change the functions so that they return an int
instead.
Signed-off-by: NAndrea Bolognani <abologna@redhat.com>
      6c0d0210
  45. 11 1月, 2018 1 次提交
  47. 08 1月, 2018 4 次提交
  49. 04 1月, 2018 1 次提交
  51. 30 5月, 2017 1 次提交