x86_64 WHPX updates:

- target/i386/emulate fixes
- move HVF x86_mmu code to common code
- fixing debug support, which was broken since around: "gdbstub: move guest debug support check to ops"
a48e7d9e52f8fe8b47f4c74f3e99d9d677b87fe5
- switch over from winhvemulation to common x86 VM exit emulation code
- remove some log lines
- Remove WHPX CPUID traps as they're currently quite broken
- Reworked implementation of the REP prefix for string instructions
- page table walker rework, error propagation for target/i386/emulate,
and injecting exceptions too
- bump the exposed interrupt controller to an X2APIC
- preemptively ignore interrupt requests to vector 0 instead of making the HV do it

Changes added since v4:
- MMU code rework
- page table walker rework, (some) error propagation for target/i386/emulate,
and injecting exceptions too...
- all around cleanups around target/i386/emulate...
- bump the exposed interrupt controller to an X2APIC
- preemptively ignore interrupt requests to vector 0 instead of making the HV do it

Changes added since v3:
- Reworked implementation of the REP prefix for string instructions
- Pick up flags conversion for WHPX x86 (used by target/i386/emulate)
- get rid of the goto for the save/restore less state for WHPX patch

Changes added since v2:
- Take target/i386/emulate patches from Bernhard Beschow
https://lore.kernel.org/qemu-devel/20260214131659.31378-1-shentey@gmail.com/
- Rework state levels to an enum
- Skip some state loading on the registers save path too

Changes added since v1:
- move HVF x86_mmu code to common code
- Use x86_mmu in WHPX MMIO exits
- Remove WHPX CPUID traps as they're currently quite broken
- Optimise MMIO vmexits by not restoring the full state

Bernhard Beschow (3):
  target/i386/emulate/x86_decode: Fix compiler warning
  target/i386/hvf/x86_mmu: Fix compiler warning
  target/i386/emulate/x86_decode: Actually use stream in
    decode_instruction_stream()

Mohamed Mediouni (24):
  target/i386/emulate: rework string_rep emulation
  target/i386: emulate, hvf: move x86_mmu to common code
  whpx: i386: re-enable guest debug support
  whpx: preparatory changes before switching over from winhvemulation
  whpx: refactor whpx_destroy_vcpu to arch-specific function
  whpx: move whpx_get_reg/whpx_set_reg to generic code
  whpx: i386: switch over from winhvemulation to target/i386/emulate
  whpx: i386: flags conversion for target/i386/emulate internal state
  whpx: i386: remove remaining winhvemulation support code
  whpx: i386: remove messages
  whpx: i386: remove CPUID trapping
  whpx: common, i386, arm: rework state levels
  whpx: i386: saving/restoring less state for
    WHPX_LEVEL_FAST_RUNTIME_STATE
  target/i386: mshv, emulate: move the generic x86 helpers to
    target/i386/emulate
  target/i386: emulate: 5-level paging for the page table walker
  target/i386: emulate, hvf, mshv: rework MMU code
  hvf: i386: save/restore CR0/2/3
  target/i386: emulate: get rid of write_val_to_mem() helper
  target/i386: emulate: raise an exception on translation fault
  target/i386: emulate: remove fetch_instruction helper too
  target/i386: emulate: propagate memory errors on most reads/writes
  whpx: i386: inject exceptions
  whpx: i386: bump to x2apic
  whpx: i386: ignore send_msi to interrupt vector 0

 accel/whpx/whpx-accel-ops.c                   |   8 +
 accel/whpx/whpx-common.c                      |  68 +-
 include/system/whpx-accel-ops.h               |  16 +-
 include/system/whpx-all.h                     |  11 +-
 include/system/whpx-common.h                  |   6 +-
 include/system/whpx-internal.h                |  16 -
 meson.build                                   |   3 +-
 target/arm/whpx/whpx-all.c                    |  43 +-
 target/i386/cpu.h                             |   2 +-
 target/i386/emulate/meson.build               |   9 +
 target/i386/emulate/x86.h                     |   1 +
 target/i386/emulate/x86_decode.c              |  12 +-
 target/i386/emulate/x86_emu.c                 | 141 +++--
 target/i386/emulate/x86_emu.h                 |   6 +-
 .../{mshv/x86.c => emulate/x86_helpers.c}     |  13 +-
 target/i386/{hvf => emulate}/x86_mmu.c        | 188 ++++--
 target/i386/{hvf => emulate}/x86_mmu.h        |  31 +-
 target/i386/hvf/hvf.c                         |  40 +-
 target/i386/hvf/meson.build                   |   1 -
 target/i386/hvf/x86.c                         |  13 +-
 target/i386/hvf/x86_task.c                    |  10 +-
 target/i386/mshv/meson.build                  |   2 +-
 target/i386/mshv/mshv-cpu.c                   |  71 ---
 target/i386/whpx/whpx-all.c                   | 591 ++++++++----------
 target/i386/whpx/whpx-apic.c                  |   5 +
 25 files changed, 652 insertions(+), 655 deletions(-)
 rename target/i386/{mshv/x86.c => emulate/x86_helpers.c} (95%)
 rename target/i386/{hvf => emulate}/x86_mmu.c (50%)
 rename target/i386/{hvf => emulate}/x86_mmu.h (51%)

-- 
2.50.1 (Apple Git-155)