I took a stab at trying to rebase/upstream the support for Intel HAXM. (Hardware Accelerated Execution Manager). Intel HAX is kernel-based hardware acceleration module for Windows and MacOSX.
I have based my work on the last version of the source code I found: the emu-2.2-release branch in the external/qemu-android repository as used by the Android emulator. In patch 2/5, I have forward-ported the core HAX code mostly unmodified from there, I just did some minor touch up to make it build and run properly, and fixed the style issues to go through checkpatch.pl. I have not included the Darwin support. It might contain some outdated constructs and probably requires more attention (thus the 'RFC' for this patchset). In patch 3/5, I'm removing a good chunk of the support for CPUs without UG mode as advised by Paolo to simplify the initial version. In patch 5/5, I have put the plumbing into the QEMU code base, I did some clean up there and it is reasonably intrusive: i.e. Makefile.target | 1 + configure | 18 ++++++++++ cpus.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++- exec.c | 16 +++++++++ hw/intc/apic_common.c | 3 +- include/qom/cpu.h | 5 +++ include/sysemu/hw_accel.h | 9 +++++ qemu-options.hx | 11 ++++++ target-i386/Makefile.objs | 7 ++++ vl.c | 15 ++++++-- 10 files changed, 167 insertions(+), 5 deletions(-) The qemu_cpu_kick_thread mess in cpus.c is probably still not perfact though. The patch 1/5 just extracts from KVM specific header the cpu_synchronize_ functions that HAX is also using. I have tested the end result on a Windows 10 Pro machine (with UG support) with the Intel HAXM module 6.0.4 and a large ChromiumOS x86_64 image to exercise various code paths. It looks stable. I also did a quick regression testing of the integration by running a Linux build with KVM enabled. Changes from v1 to v2: - fix all style issues in the original code to get it through checkpatch.pl. - remove Darwin support, it was barely tested and not fully functional. - remove the support for CPU without UG mode. - fix most review comments Vincent Palatin (5): kvm: move cpu synchronization code target-i386: Add Intel HAX files hax: remove non UG code hax: simplify init Plumb the HAXM-based hardware acceleration support Makefile.target | 1 + configure | 18 + cpus.c | 88 ++- exec.c | 16 + gdbstub.c | 1 + hax-stub.c | 39 ++ hw/i386/kvm/apic.c | 1 + hw/i386/kvmvapic.c | 1 + hw/intc/apic_common.c | 3 +- hw/misc/vmport.c | 2 +- include/qom/cpu.h | 5 + include/sysemu/hax.h | 56 ++ include/sysemu/hw_accel.h | 48 ++ include/sysemu/kvm.h | 23 - monitor.c | 2 +- qemu-options.hx | 11 + qom/cpu.c | 2 +- target-arm/cpu.c | 2 +- target-i386/Makefile.objs | 7 + target-i386/hax-all.c | 1327 +++++++++++++++++++++++++++++++++++++++++++ target-i386/hax-i386.h | 90 +++ target-i386/hax-interface.h | 357 ++++++++++++ target-i386/hax-slot.c | 333 +++++++++++ target-i386/hax-slot.h | 58 ++ target-i386/hax-windows.c | 489 ++++++++++++++++ target-i386/hax-windows.h | 89 +++ target-i386/helper.c | 1 + target-i386/kvm.c | 1 + vl.c | 15 +- 29 files changed, 3054 insertions(+), 32 deletions(-) create mode 100644 hax-stub.c create mode 100644 include/sysemu/hax.h create mode 100644 include/sysemu/hw_accel.h create mode 100644 target-i386/hax-all.c create mode 100644 target-i386/hax-i386.h create mode 100644 target-i386/hax-interface.h create mode 100644 target-i386/hax-slot.c create mode 100644 target-i386/hax-slot.h create mode 100644 target-i386/hax-windows.c create mode 100644 target-i386/hax-windows.h -- 2.8.0.rc3.226.g39d4020
