[PATCH v2] docs/about/deprecated: Mark HAXM in QEMU as deprecated

[Thomas Huth <thuth@redhat.com>]

The HAXM project has been retired (see https://github.com/intel/haxm#status),
so we should mark the code in QEMU as deprecated (and finally remove it
unless somebody else picks the project up again - which is quite unlikely
since there are now whpx and hvf on these operating systems, too).

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 v2: Added a message to hax_accel_init(), too

 docs/about/deprecated.rst | 6 ++++++
 target/i386/hax/hax-all.c | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 3f4d678eb4..da2e6fe63d 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -93,6 +93,12 @@ form is preferred.
 The HPET setting has been turned into a machine property.
 Use ``-machine hpet=off`` instead.
 
+``-accel hax`` (since 8.0)
+''''''''''''''''''''''''''
+
+The HAXM project has been retired (see https://github.com/intel/haxm#status).
+Use "whpx" (on Windows) or "hvf" (on macOS) instead.
+
 
 QEMU Machine Protocol (QMP) commands
 ------------------------------------
diff --git a/target/i386/hax/hax-all.c b/target/i386/hax/hax-all.c
index b7fb5385b2..3e5992a63b 100644
--- a/target/i386/hax/hax-all.c
+++ b/target/i386/hax/hax-all.c
@@ -357,6 +357,9 @@ static int hax_accel_init(MachineState *ms)
         fprintf(stdout, "HAX is %s and emulator runs in %s mode.\n",
                 !ret ? "working" : "not working",
                 !ret ? "fast virt" : "emulation");
+        fprintf(stdout,
+                "NOTE: HAX is deprecated and will be removed in a future release.\n"
+                "      Use 'whpx' (on Windows) or 'hvf' (on macOS) instead.\n");
     }
     return ret;
 }
-- 
2.31.1