4 Commits

Author	SHA1	Message	Date
Jiri Denemark	12eb0c9496	cpu_map: Add pschange-mc-no bit in IA32_ARCH_CAPABILITIES MSR ... Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>	2020-05-25 19:20:21 +02:00
Jiri Denemark	17cdefe5f1	cpu_map: Don't use new noTSX models for host-model CPUs ... Host-model CPU definitions (and domain capabilities) will use the original CPU models (without noTSX in their name) and explicitly disable hle and rtm features. This way domains with host-model CPUs will be migratable even to older versions of libvirt which do not support the noTSX model variants. The new models will be advertised in host capabilities and they may be used explicitly with custom CPUs. Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Tested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>	2020-03-25 22:27:39 +01:00
Christian Ehrhardt	dd17a4eba8	cpu_map: Add more -noTSX x86 CPU models ... One of the mitigation methods for TAA[1] is to disable TSX support on the host system. Linux added a mechanism to disable TSX globally through the kernel command line, and many Linux distributions now default to tsx=off. This makes existing CPU models that have HLE and RTM enabled not usable anymore. Add new versions of all CPU models that have the HLE and RTM features enabled, that can be used when TSX is disabled in the host system. On systems disabling the features without those types defined in cpu-maps users end up without modern CPU types in the list of usable CPUs to use in the likes of virsh domcapabilities or tools higher in the stack like virt-manager. This adds: -Cascadelake-Server-noTSX -Icelake-Client-noTSX -Icelake-Server-noTSX -Skylake-Server-noTSX-IBRS -Skylake-Client-noTSX-IBRS Introduced in QEMU by commit v4.2.0-rc2-3-g9ab2237f19 (function) and commit v4.2.0-rc2-4-g02fa60d101 (names) References: [1] TAA, TSX asynchronous Abort: https://software.intel.com/security-software-guidance/insights/deep-dive-intel-transactional-synchronization-extensions-intel-tsx-asynchronous-abort https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/tsx_async_abort.html Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1853200 Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Message-Id: <20200310104806.2723-2-christian.ehrhardt@canonical.com> Reviewed-by: Jiri Denemark <jdenemar@redhat.com>	2020-03-25 22:27:39 +01:00
Jiri Denemark	62a50628ff	cputest: Add data for Intel(R) Core(TM) i7-8550U CPU without TSX ... Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>	2020-03-09 16:17:34 +01:00