Re: [libvirt] [PATCH] cpu: Add support for al57 Intel features
On 12/17/2017 06:02 PM, Shaohe Feng wrote:
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
---
src/cpu/cpu_map.xml | 3 +++
1 file changed, 3 insertions(+)
I think if you go through history of cpu_map.xml changes you'll find
when a new feature is added there are tests added as well - this would
thus seemingly need a test adjustment as well.
John
diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml
index e5da7a8..922a195 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'/>