From: Shaohe Feng <shaohe.feng@intel.com>
Date: Sun, 17 Dec 2017 23:02:44 +0000 (-0500)
Subject: cpu: Add support for al57 Intel features
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=e7cb9c4e230c3c77e35e72334c261b5b0a2211c6;p=libvirt.git

cpu: Add support for al57 Intel features

We can start qemu with a "cpu,+la57" to set 57-bit vitrual address
space. So VM can be aware that it need to enable 5-level paging.

Corresponding QEMU commits:
        al57 6c7c3c21f95dd9af8a0691c0dd29b07247984122
---

diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml
index 85c728227f..00a43b172c 100644
--- a/src/cpu/cpu_map.xml
+++ b/src/cpu/cpu_map.xml
@@ -285,6 +285,9 @@
     <feature name='ospke'>
       <cpuid eax_in='0x07' ecx_in='0x00' ecx='0x00000010'/>
     </feature>
+    <feature name='la57'>
+      <cpuid eax_in='0x07' ecx_in='0x00' ecx='0x00010000'/>
+    </feature>
 
     <feature name='avx512-4vnniw'>
       <cpuid eax_in='0x07' ecx_in='0x00' edx='0x00000004'/>
diff --git a/tests/domaincapsschemadata/qemu_2.9.0-tcg.x86_64.xml b/tests/domaincapsschemadata/qemu_2.9.0-tcg.x86_64.xml
index 7ff998907d..6c2bbac190 100644
--- a/tests/domaincapsschemadata/qemu_2.9.0-tcg.x86_64.xml
+++ b/tests/domaincapsschemadata/qemu_2.9.0-tcg.x86_64.xml
@@ -43,6 +43,7 @@
       <feature policy='require' name='clwb'/>
       <feature policy='require' name='pku'/>
       <feature policy='require' name='ospke'/>
+      <feature policy='require' name='la57'/>
       <feature policy='require' name='xsaveopt'/>
       <feature policy='require' name='xgetbv1'/>
       <feature policy='require' name='mmxext'/>