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qemu-e2k/target/i386/hvf
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Roman Bolshakov ddd31732a7 i386: hvf: Reset IRQ inhibition after moving RIP 
The sequence of instructions exposes an issue:
  sti
  hlt

Interrupts cannot be delivered to hvf after hlt instruction cpu because
HF_INHIBIT_IRQ_MASK is set just before hlt is handled and never reset
after moving instruction pointer beyond hlt.

So, after hvf_vcpu_exec() returns, CPU thread gets locked up forever in
qemu_wait_io_event() (cpu_thread_is_idle() evaluates inhibition
flag and considers the CPU idle if the flag is set).

Cc: Cameron Esfahani <dirty@apple.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Message-Id: <20200328174411.51491-1-r.bolshakov@yadro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-04-02 14:55:45 -04:00
..
hvf-i386.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
hvf.c hvf: correctly inject VMCS_INTR_T_HWINTR versus VMCS_INTR_T_SWINTR. 2019-12-03 09:11:42 +01:00
Makefile.objs
panic.h
README.md
vmcs.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
vmx.h i386: hvf: Reset IRQ inhibition after moving RIP 2020-04-02 14:55:45 -04:00
x86_cpuid.c target/i386: drop the duplicated definition of cpuid AVX512_VBMI macro 2019-10-15 18:34:44 -03:00
x86_decode.c hvf: correctly handle REX prefix in relation to legacy prefixes 2019-11-26 09:58:36 +01:00
x86_decode.h hvf: correctly handle REX prefix in relation to legacy prefixes 2019-11-26 09:58:36 +01:00
x86_descr.c
x86_descr.h Normalize header guard symbol definition. 2019-05-13 08:58:55 +02:00
x86_emu.c target/i386: add a ucode-rev property 2020-01-24 20:59:09 +01:00
x86_emu.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
x86_flags.c
x86_flags.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
x86_mmu.c Avoid address_space_rw() with a constant is_write argument 2020-02-20 14:47:08 +01:00
x86_mmu.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
x86_task.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
x86_task.h
x86.c
x86.h Normalize header guard symbol definition. 2019-05-13 08:58:55 +02:00
x86hvf.c hvf: correctly inject VMCS_INTR_T_HWINTR versus VMCS_INTR_T_SWINTR. 2019-12-03 09:11:42 +01:00
x86hvf.h

README.md

OS X Hypervisor.framework support in QEMU

These sources (and ../hvf-all.c) are adapted from Veertu Inc's vdhh (Veertu Desktop Hosted Hypervisor) (last known location: https://github.com/veertuinc/vdhh) with some minor changes, the most significant of which were:

  1. Adapt to our current QEMU's CPUState structure and address_space_rw API; many struct members have been moved around (emulated x86 state, xsave_buf) due to historical differences + QEMU needing to handle more emulation targets.
  2. Removal of apic_page and hyperv-related functionality.
  3. More relaxed use of qemu_mutex_lock_iothread.