Hey all, In the current MSHV accelerator code passing CPU features via the -cpu flag doesn't work as intended yet. When using the MSHV hypervisor we either silently discard the specified model/features and leave it up to the hypervisor to provide a sensible set of features or if the user selects -cpu host, the hypervisor might refuse to create a partition.
This changeset introduces a more comprehensive support for passing desired guest cpu features to the hypervisor. It's also a prerequisite for Live Migration support. Drive-by fixes: - adding packed attribute to inlined UAPI structs Changes since v1: - query hypervisor for supported processor features instead of the host OS - disable la57 (5 level page tables) best, magnus Magnus Kulke (9): accel/mshv: use mshv_create_partition_v2 payload target/i386/mshv: fix cpuid propagation bug target/i386/mshv: fix various cpuid traversal bugs target/i386/mshv: change cpuid mask to UINT32_MAX target/i386/mshv: set cpu model name on -cpu host target/i386: query mshv accel for supported cpuids target/i386/mshv: populate xsave area offsets target/i386/mshv: filter out CET bits in cpuid accel/mshv: disable la57 (5lvl paging) accel/mshv/mshv-all.c | 82 +++++++++++- include/hw/hyperv/hvgdk_mini.h | 2 + include/hw/hyperv/hvhdk.h | 195 ++++++++++++++++++++++++++++ include/system/mshv.h | 3 + target/i386/cpu.c | 8 ++ target/i386/mshv/mshv-cpu.c | 227 +++++++++++++++++++++++++++------ 6 files changed, 468 insertions(+), 49 deletions(-) -- 2.34.1
