On a Monday in 2020, Jiri Denemark wrote:
The host CPU related info stored in the capabilities cache is no longer valid after the host CPU changes. This is not a frequent situation in real world, but it can easily happen in nested scenarios when a disk image is started with various CPUs. https://bugzilla.redhat.com/show_bug.cgi?id=1778819 Jiri Denemark (6): util: Define g_autoptr callback for FILE hostcpu: Introduce virHostCPUGetSignature hostcpu: Implement virHostCPUGetSignature for x86 hostcpu: Implement virHostCPUGetSignature for ppc64 hostcpu: Implement virHostCPUGetSignature for s390 qemu: Invalidate capabilities when host CPU changes src/libvirt_private.syms | 2 + src/qemu/qemu_capabilities.c | 24 ++++ src/qemu/qemu_capspriv.h | 1 + src/util/virfile.h | 1 + src/util/virhostcpu.c | 111 ++++++++++++++++++ src/util/virhostcpu.h | 2 + src/util/virhostcpupriv.h | 4 + tests/qemucapsprobe.c | 2 +- .../linux-ppc64-deconf-cpus.signature | 1 + .../linux-ppc64-subcores1.signature | 1 + .../linux-ppc64-subcores2.signature | 1 + .../linux-ppc64-subcores3.signature | 1 + .../linux-s390x-with-frequency.signature | 1 + .../linux-x86_64-test1.signature | 1 + .../linux-x86_64-test2.signature | 1 + .../linux-x86_64-test3.signature | 1 + .../linux-x86_64-test4.signature | 1 + .../linux-x86_64-test5.signature | 1 + .../linux-x86_64-test6.signature | 1 + .../linux-x86_64-test7.signature | 1 + .../linux-x86_64-test8.signature | 1 + .../linux-x86_64-with-die.signature | 1 + tests/virhostcputest.c | 42 ++++++- 23 files changed, 201 insertions(+), 2 deletions(-) create mode 100644 tests/virhostcpudata/linux-ppc64-deconf-cpus.signature create mode 100644 tests/virhostcpudata/linux-ppc64-subcores1.signature create mode 100644 tests/virhostcpudata/linux-ppc64-subcores2.signature create mode 100644 tests/virhostcpudata/linux-ppc64-subcores3.signature create mode 100644 tests/virhostcpudata/linux-s390x-with-frequency.signature create mode 100644 tests/virhostcpudata/linux-x86_64-test1.signature create mode 100644 tests/virhostcpudata/linux-x86_64-test2.signature create mode 100644 tests/virhostcpudata/linux-x86_64-test3.signature create mode 100644 tests/virhostcpudata/linux-x86_64-test4.signature create mode 100644 tests/virhostcpudata/linux-x86_64-test5.signature create mode 100644 tests/virhostcpudata/linux-x86_64-test6.signature create mode 100644 tests/virhostcpudata/linux-x86_64-test7.signature create mode 100644 tests/virhostcpudata/linux-x86_64-test8.signature create mode 100644 tests/virhostcpudata/linux-x86_64-with-die.signature
Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx> Jano
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