--- wikisrc/users/kamil/qemu.mdwn	2018/05/27 09:41:46	1.2
+++ wikisrc/users/kamil/qemu.mdwn	2019/01/30 02:07:44	1.4
@@ -63,7 +63,7 @@ docs           | build documentation    
 guest-agent    | build the QEMU Guest Agent                         | unknown, probably broken
 guest-agent-msi| build guest agent Windows MSI installation package | unknown, probably broken
 pie            | Position Independent Executables                   | should work
-modules        | modules support                                    | unknown, should work
+modules        | QEMU modules support (not kernel modules)          | unknown, should work
 debug-tcg      | TCG debugging (default is disabled)                | should work
 debug-info     | debugging information                              | should work
 sparse         | sparse checker                                     | should work
@@ -91,7 +91,7 @@ membarrier     | membarrier system call 
 fdt            | fdt device tree                                    | unknown, should work
 bluez          | bluez stack connectivity                           | unknown
 kvm            | KVM acceleration support                           | N/A , Linux specific kernel APIs required in userland
-hax            | HAX acceleration support                           | not ported, Windows/Darwin specific as of today
+hax            | HAX acceleration support                           | mostly works, patches pending
 hvf            | Hypervisor.framework acceleration support          | not ported, Darwin specific
 whpx           | Windows Hypervisor Platform acceleration support   | N/A
 rdma           | Enable RDMA-based migration and PVRDMA support     | unknown, probably not supported
@@ -162,50 +162,3 @@ capstone       | capstone disassembler s
 2. Make QEMU PaX MPROTECT safe.
 
 3. Develop NetBSD USER emulation, attempt to either share the code with FreeBSD (bsd-user, old broken, downstream patches) or with Linux (linux-user, recent, actively maintained). Preferred approach is to share as much code with linux-user as possible, regardless of the state of bsd-user.
-
-4. Develop HAXM backend support for the NetBSD kernel.
-
-## HAXM hardware assisted virtualization
-
-Features:
-
- - Open Source
- - HAXM is an Intel hardware assisted virtualization.
- - HAXM supports up to 8 active VMs.
- - HAXM supports up to 16 active VCPUs per VM.
- - ioctl(2) based API with statically created devices (/dev/HAX, /dev/haxm_vm/vmXX, /dev/haxm_vm/haxm_vmXX_vcpuYY)
-
-HAXM porting for NetBSD rationale:
-
- - Relatively low cost (compared to alternatives) to get it aboard to the NetBSD kernel.
- - Relatively non-intrusive (compared to alternatives like bhyve and KVM)
- - Scratch but non-functional port for NetBSD is ready.
- - Active (paid developers) upstream to maintain this
- - Clean separation between kernel specific and independent parts (there are at least 2 backends: Darwin and Windows)
- - QEMU frontend already exists, API is ioctl(2) based
- - Good license (BSD-3-clause) for the kernel driver
- - Tailored down for desktop users, initially prepared for Android developers
-
-HAXM shortcomings:
-
- - No AMD support
- - Required relatively recent Intel CPU
- - Not as flexible as KVM-like solutions for embedded or server usage
- - Not necessarily ready (not tested) to run every OS in existence, there are known failures to execute some versions of the Linux kernel
-
-Current HAXM/NetBSD status:
-
- - The module builds and loads into the kernel (triggering a panic)
- - Revisit the UVM APIs to ship all the needed features of sharing memory between user and kernel that is used by HAXM
-
-> https://github.com/krytarowski/haxm/tree/netbsd-1
-> 
-> $ cd netbsd && make
-
-External links:
-
-[https://www.qemu.org/2017/11/22/haxm-usage-windows/](https://www.qemu.org/2017/11/22/haxm-usage-windows/)
-
-[https://software.intel.com/en-us/articles/intel-hardware-accelerated-execution-manager-intel-haxm](https://software.intel.com/en-us/articles/intel-hardware-accelerated-execution-manager-intel-haxm)
-
-[https://github.com/intel/haxm](https://github.com/intel/haxm)