The following patches fix stability issues with running QEMU on Apple Hypervisor Framework (HVF): - non-RAM, non-ROMD areas need to trap so accesses can be correctly emulated. - Current TSC synchronization implementation is insufficient: when running with more than 1 core, TSC values can go backwards. Until a correct implementation can be written, remove calls to hv_vm_sync_tsc(). Pass through TSC to guest OS. - Fix REX emulation in relation to legacy prefixes. - More correctly match SDM when setting CR0 and PDPTE registers. - Previous implementation in hvf_inject_interrupts() would always inject VMCS_INTR_T_SWINTR even when VMCS_INTR_T_HWINTR was required. Now correctly determine when VMCS_INTR_T_HWINTR is appropriate versus VMCS_INTR_T_SWINTR. Under heavy loads, interrupts got misrouted.
Changes in v3: - Change previous code which saved interrupt/exception type in hvf_store_events() to inject later in hvf_inject_interrupts(). Now, hvf_inject_interrupts() will correctly determine when it's appropriate to inject VMCS_INTR_T_HWINTR versus VMCS_INTR_T_SWINTR. From feedback by Paolo Bonzini to make code more similar to KVM model. Changes in v2: - Fix code style errors. Cameron Esfahani (5): hvf: non-RAM, non-ROMD memory ranges are now correctly mapped in hvf: remove TSC synchronization code because it isn't fully complete hvf: correctly handle REX prefix in relation to legacy prefixes hvf: more accurately match SDM when setting CR0 and PDPTE registers hvf: correctly inject VMCS_INTR_T_HWINTR versus VMCS_INTR_T_SWINTR. target/i386/hvf/hvf.c | 65 ++++++++++++++++++++++++++---------- target/i386/hvf/vmx.h | 18 +++++----- target/i386/hvf/x86_decode.c | 64 +++++++++++++++++++---------------- target/i386/hvf/x86_decode.h | 20 +++++------ target/i386/hvf/x86_emu.c | 3 -- target/i386/hvf/x86hvf.c | 18 +++++----- 6 files changed, 112 insertions(+), 76 deletions(-) -- 2.24.0
