Re: [libvirt] [PATCH 0/8] Memory locking fixes

A problem reported recently to the mailing list[1] uncovered some flaws in the way we deal with setting the memory locking limit for QEMU guests. This series solves those issues and adds test suite coverage to hopefully prevent more bugs from popping up in the future.

[1] https://www.redhat.com/archives/libvir-list/2017-March/msg00534.html Andrea Bolognani (8): Revert "qemu: Forbid <memoryBacking><locked> without <memtune><hard_limit>" qemu: Remove qemuDomainRequiresMemLock() qemu: Fix memory locking limit calculation process: Translate "unlimited" correctly command: Introduce virCommandGetMaxMemLock() tests: Introduce virTestCompareToULL() tests: Introduce QEMU memory locking limit tests docs: Improve documentation related to memory locking docs/formatdomain.html.in | 36 +++-- src/libvirt_private.syms | 1 + src/qemu/qemu_command.c | 4 +- src/qemu/qemu_domain.c | 75 ++++----- src/qemu/qemu_domain.h | 1 - src/util/vircommand.c | 9 ++ src/util/vircommand.h | 2 + src/util/virprocess.c | 20 ++- tests/Makefile.am | 9 ++ .../qemumemlock-pc-hardlimit+hostdev.xml | 20 +++ .../qemumemlock-pc-hardlimit+locked+hostdev.xml | 23 +++ .../qemumemlock-pc-hardlimit+locked.xml | 17 ++ tests/qemumemlockdata/qemumemlock-pc-hardlimit.xml | 14 ++ tests/qemumemlockdata/qemumemlock-pc-hostdev.xml | 17 ++ tests/qemumemlockdata/qemumemlock-pc-kvm.xml | 11 ++ .../qemumemlock-pc-locked+hostdev.xml | 20 +++ tests/qemumemlockdata/qemumemlock-pc-locked.xml | 14 ++ tests/qemumemlockdata/qemumemlock-pc-tcg.xml | 11 ++ .../qemumemlock-pseries-hardlimit+hostdev.xml | 20 +++ ...emumemlock-pseries-hardlimit+locked+hostdev.xml | 23 +++ .../qemumemlock-pseries-hardlimit+locked.xml | 17 ++ .../qemumemlock-pseries-hardlimit.xml | 14 ++ .../qemumemlock-pseries-hostdev.xml | 17 ++ tests/qemumemlockdata/qemumemlock-pseries-kvm.xml | 11 ++ .../qemumemlock-pseries-locked+hostdev.xml | 20 +++ .../qemumemlockdata/qemumemlock-pseries-locked.xml | 14 ++ tests/qemumemlockdata/qemumemlock-pseries-tcg.xml | 11 ++ tests/qemumemlocktest.c | 172 +++++++++++++++++++++ tests/qemuxml2argvdata/qemuxml2argv-mlock-on.xml | 3 - tests/testutils.c | 27 ++++ tests/testutils.h | 2 + 31 files changed, 583 insertions(+), 72 deletions(-) create mode 100644 tests/qemumemlockdata/qemumemlock-pc-hardlimit+hostdev.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pc-hardlimit+locked+hostdev.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pc-hardlimit+locked.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pc-hardlimit.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pc-hostdev.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pc-kvm.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pc-locked+hostdev.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pc-locked.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pc-tcg.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-hardlimit+hostdev.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-hardlimit+locked+hostdev.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-hardlimit+locked.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-hardlimit.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-hostdev.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-kvm.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-locked+hostdev.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-locked.xml create mode 100644 tests/qemumemlockdata/qemumemlock-pseries-tcg.xml create mode 100644 tests/qemumemlocktest.c