diff options
Diffstat (limited to 'external/meta-virtualization/recipes-extended/libvirt/libvirt/0001-cpu_x86-Do-not-cache-microcode-version.patch')
| -rw-r--r-- | external/meta-virtualization/recipes-extended/libvirt/libvirt/0001-cpu_x86-Do-not-cache-microcode-version.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/external/meta-virtualization/recipes-extended/libvirt/libvirt/0001-cpu_x86-Do-not-cache-microcode-version.patch b/external/meta-virtualization/recipes-extended/libvirt/libvirt/0001-cpu_x86-Do-not-cache-microcode-version.patch new file mode 100644 index 00000000..4413d5fb --- /dev/null +++ b/external/meta-virtualization/recipes-extended/libvirt/libvirt/0001-cpu_x86-Do-not-cache-microcode-version.patch @@ -0,0 +1,59 @@ +From 33998cdd47300fc3ca6cb8f85714c149440b9c8b Mon Sep 17 00:00:00 2001 +From: Jiri Denemark <jdenemar@redhat.com> +Date: Fri, 5 Apr 2019 11:33:32 +0200 +Subject: [PATCH 01/11] cpu_x86: Do not cache microcode version +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The microcode version checks are used to invalidate cached CPU data we +get from QEMU. To minimize /proc/cpuinfo parsing the microcode version +was only read when libvirtd started and cached for the daemon's +lifetime. However, the CPU microcode can change anytime (updating the +microcode package can automatically upload it to the CPU) and we need to +stop caching it to avoid using stale CPU model data. + +Signed-off-by: Jiri Denemark <jdenemar@redhat.com> +Reviewed-by: Ján Tomko <jtomko@redhat.com> +(cherry picked from commit be46f613261d3b655a1f15afd635087e68a9c39b) + +Upstream-Status: Backport +Signed-off-by: Armin Kuster <akuster@mvista.com> + +--- + src/cpu/cpu_x86.c | 5 +---- + 1 file changed, 1 insertion(+), 4 deletions(-) + +diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c +index cb27550..ce48ca6 100644 +--- a/src/cpu/cpu_x86.c ++++ b/src/cpu/cpu_x86.c +@@ -163,7 +163,6 @@ struct _virCPUx86Map { + }; + + static virCPUx86MapPtr cpuMap; +-static unsigned int microcodeVersion; + + int virCPUx86DriverOnceInit(void); + VIR_ONCE_GLOBAL_INIT(virCPUx86Driver); +@@ -1331,8 +1330,6 @@ virCPUx86DriverOnceInit(void) + if (!(cpuMap = virCPUx86LoadMap())) + return -1; + +- microcodeVersion = virHostCPUGetMicrocodeVersion(); +- + return 0; + } + +@@ -2372,7 +2369,7 @@ virCPUx86GetHost(virCPUDefPtr cpu, + goto cleanup; + + ret = x86DecodeCPUData(cpu, cpuData, models); +- cpu->microcodeVersion = microcodeVersion; ++ cpu->microcodeVersion = virHostCPUGetMicrocodeVersion(); + + cleanup: + virCPUx86DataFree(cpuData); +-- +2.7.4 + |