anaconda: check for virtualization features

Warn if the hardware lack features required for proper Qubes OS
operation.

Fixes QubesOS/qubes-issues#2977

anaconda/anaconda.spec

@@ -150,6 +150,9 @@ Requires: anaconda-tui = %{epoch}:%{version}-%{release}
 # Make sure we get the en locale one way or another
 Requires: glibc-langpack-en
 
+# check for supported hardware on Qubes OS require xl binary
+Requires: xen-runtime
+
 Obsoletes: anaconda-images <= 10
 Provides: anaconda-images = %{version}-%{release}
 Obsoletes: anaconda-runtime < %{version}-%{release}

anaconda/pyanaconda/iutil.py

@@ -1098,6 +1098,23 @@ def is_unsupported_hw():
         tainted = 0
 
     status = bool(tainted & UNSUPPORTED_HW)
+    try:
+        xl_info = subprocess.check_output(['xl', 'info'])
+        xl_dmesg = subprocess.check_output(['xl', 'dmesg'])
+    except subprocess.CalledProcessError:
+        status = 'xl call failed'
+    else:
+        missing_features = []
+        for line in xl_info.splitlines():
+            if line.startswith(b'virt_caps'):
+                if b'hvm' not in line:
+                    missing_features.append('HVM/VT-x/AMD-V')
+                if b'hvm_directio' not in line:
+                    missing_features.append('IOMMU/VT-d/AMD-Vi')
+        if b'HVM: Hardware Assisted Paging (HAP) detected' not in xl_dmesg:
+            missing_features.append('HAP/SLAT/EPT/RVI')
+        status = ', '.join(missing_features)
+
     if status:
         log.debug("Installing on Unsupported Hardware")
     return status

anaconda/pyanaconda/ui/gui/spokes/welcome.glade

@@ -507,7 +507,7 @@
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
                 <property name="valign">start</property>
-                <property name="label" translatable="yes">This hardware (or a combination thereof) is not supported by Red Hat.  For more information on supported hardware, please refer to http://www.redhat.com/hardware.</property>
+                <property name="label" translatable="yes">This hardware lack features required by Qubes OS. Missing features: %(features)s. For more information on supported hardware, please refer to https://www.qubes-os.org/system-requirements/</property>
                 <property name="wrap">True</property>
                 <attributes>
                   <attribute name="font-desc" value="Cantarell 12"/>

anaconda/pyanaconda/ui/gui/spokes/welcome.py

@@ -295,9 +295,13 @@ class WelcomeLanguageSpoke(LangLocaleHandler, StandaloneSpoke):
                 sys.exit(0)
 
         # pylint: disable=no-member
-        if productName.startswith("Red Hat ") and \
-          is_unsupported_hw() and not self.data.unsupportedhardware.unsupported_hardware:
+        unsupported_status = is_unsupported_hw()
+        if unsupported_status:
+            # Fedora kickstart do not have unsupported_hardware option:
+            #   and not self.data.unsupportedhardware.unsupported_hardware:
             dlg = self.builder.get_object("unsupportedHardwareDialog")
+            msg = self.builder.get_object("unsupportedHardwareDesc")
+            msg.set_text(_(msg.get_text()) % {'features': unsupported_status})
             with self.main_window.enlightbox(dlg):
                 rc = dlg.run()
                 dlg.destroy()

anaconda/pyanaconda/ui/tui/spokes/warnings_spoke.py

@@ -43,15 +43,15 @@ class WarningsSpoke(StandaloneTUISpoke):
     def __init__(self, *args, **kwargs):
         StandaloneTUISpoke.__init__(self, *args, **kwargs)
 
-        self._message = _("This hardware (or a combination thereof) is not "
-                          "supported by Red Hat.  For more information on "
-                          "supported hardware, please refer to "
-                          "http://www.redhat.com/hardware.")
+        self._message = _("This hardware lack features required by Qubes OS. "
+                          "Missing features: %(features)s. "
+                          "For more information on supported hardware, "
+                          "please refer to https://www.qubes-os.org/system-requirements/")
         # Does anything need to be displayed?
         # pylint: disable=no-member
-        self._unsupported = productName.startswith("Red Hat ") and \
-                            is_unsupported_hw() and \
-                            not self.data.unsupportedhardware.unsupported_hardware
+        #   self._unsupported = not self.data.unsupportedhardware.unsupported_hardware \
+        #                       and is_unsupported_hw()
+        self._unsupported = is_unsupported_hw()
 
     @property
     def completed(self):
@@ -60,7 +60,7 @@ class WarningsSpoke(StandaloneTUISpoke):
     def refresh(self, args=None):
         StandaloneTUISpoke.refresh(self, args)
 
-        self._window += [TextWidget(self._message), ""]
+        self._window += [TextWidget(self._message % {'features': self._unsupported}), ""]
 
         return True