cpu: Add support for "stibp" x86_64 feature

QEMU commit v3.1.0-4-g0e89165829
KVM patch: https://lore.kernel.org/lkml/20181205191956.31480-1-ehabkost@redhat.com/Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

src/cpu_map/x86_features.xml

@@ -323,6 +323,9 @@
   <feature name='spec-ctrl'>
     <cpuid eax_in='0x07' ecx_in='0x00' edx='0x04000000'/>
   </feature>
+  <feature name='stibp'>
+    <cpuid eax_in='0x07' ecx_in='0x00' edx='0x08000000'/>
+  </feature>
   <feature name='ssbd'>
     <cpuid eax_in='0x07' ecx_in='0x00' edx='0x80000000'/>
   </feature>

tests/cputestdata/x86_64-cpuid-Core-i7-5600U-ibrs-disabled.xml

 <!-- Features disabled by QEMU -->
 <cpudata arch='x86'>
   <cpuid eax_in='0x00000001' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x0800c1dc' edx='0xb0600000'/>
-  <cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x00000000' edx='0x04000000'/>
+  <cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x00000000' edx='0x0c000000'/>
   <cpuid eax_in='0x80000007' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x00000000' edx='0x00000100'/>
 </cpudata>

tests/cputestdata/x86_64-cpuid-Core-i7-5600U-ibrs-guest.xml

@@ -23,6 +23,7 @@
   <feature policy='require' name='arat'/>
   <feature policy='require' name='tsc_adjust'/>
   <feature policy='require' name='intel-pt'/>
+  <feature policy='require' name='stibp'/>
   <feature policy='require' name='xsaveopt'/>
   <feature policy='require' name='pdpe1gb'/>
   <feature policy='require' name='abm'/>

tests/cputestdata/x86_64-cpuid-Core-i7-5600U-ibrs-host.xml

@@ -24,6 +24,7 @@
   <feature name='arat'/>
   <feature name='tsc_adjust'/>
   <feature name='intel-pt'/>
+  <feature name='stibp'/>
   <feature name='xsaveopt'/>
   <feature name='pdpe1gb'/>
   <feature name='abm'/>

tests/cputestdata/x86_64-cpuid-Xeon-E5-2609-v3-disabled.xml

 <!-- Features disabled by QEMU -->
 <cpudata arch='x86'>
   <cpuid eax_in='0x00000001' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x0804c1fc' edx='0xb0600000'/>
-  <cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x00001000' ecx='0x00000000' edx='0x00000000'/>
+  <cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x00001000' ecx='0x00000000' edx='0x08000000'/>
   <cpuid eax_in='0x80000007' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x00000000' edx='0x00000100'/>
 </cpudata>

tests/cputestdata/x86_64-cpuid-Xeon-E5-2609-v3-guest.xml

@@ -24,6 +24,7 @@
   <feature policy='require' name='arat'/>
   <feature policy='require' name='tsc_adjust'/>
   <feature policy='require' name='cmt'/>
+  <feature policy='require' name='stibp'/>
   <feature policy='require' name='xsaveopt'/>
   <feature policy='require' name='pdpe1gb'/>
   <feature policy='require' name='abm'/>

tests/cputestdata/x86_64-cpuid-Xeon-E5-2609-v3-host.xml

@@ -25,6 +25,7 @@
   <feature name='arat'/>
   <feature name='tsc_adjust'/>
   <feature name='cmt'/>
+  <feature name='stibp'/>
   <feature name='xsaveopt'/>
   <feature name='pdpe1gb'/>
   <feature name='abm'/>

tests/cputestdata/x86_64-cpuid-Xeon-E5-2623-v4-disabled.xml

 <!-- Features disabled by QEMU -->
 <cpudata arch='x86'>
   <cpuid eax_in='0x00000001' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x0804c1fc' edx='0xb0600000'/>
-  <cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x00001000' ecx='0x00000000' edx='0x00000000'/>
+  <cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x00001000' ecx='0x00000000' edx='0x08000000'/>
   <cpuid eax_in='0x0000000f' ecx_in='0x01' eax='0x00000000' ebx='0x00000000' ecx='0x00000000' edx='0x00000006'/>
   <cpuid eax_in='0x80000007' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x00000000' edx='0x00000100'/>
 </cpudata>

tests/cputestdata/x86_64-cpuid-Xeon-E5-2623-v4-guest.xml

@@ -21,6 +21,7 @@
   <feature policy='require' name='tsc_adjust'/>
   <feature policy='require' name='cmt'/>
   <feature policy='require' name='intel-pt'/>
+  <feature policy='require' name='stibp'/>
   <feature policy='require' name='mbm_total'/>
   <feature policy='require' name='mbm_local'/>
   <feature policy='require' name='pdpe1gb'/>

tests/cputestdata/x86_64-cpuid-Xeon-E5-2623-v4-host.xml

@@ -26,6 +26,7 @@
   <feature name='tsc_adjust'/>
   <feature name='cmt'/>
   <feature name='intel-pt'/>
+  <feature name='stibp'/>
   <feature name='xsaveopt'/>
   <feature name='mbm_total'/>
   <feature name='mbm_local'/>

tests/cputestdata/x86_64-cpuid-Xeon-Gold-5115-disabled.xml

 <!-- Features disabled by QEMU -->
 <cpudata arch='x86'>
   <cpuid eax_in='0x00000001' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x0804c1fc' edx='0xb0600000'/>
-  <cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x00001000' ecx='0x00000008' edx='0x00000000'/>
+  <cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x00001000' ecx='0x00000008' edx='0x08000000'/>
   <cpuid eax_in='0x0000000d' ecx_in='0x01' eax='0x00000008' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
   <cpuid eax_in='0x0000000f' ecx_in='0x01' eax='0x00000000' ebx='0x00000000' ecx='0x00000000' edx='0x00000006'/>
   <cpuid eax_in='0x80000007' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x00000000' edx='0x00000100'/>

tests/cputestdata/x86_64-cpuid-Xeon-Gold-5115-guest.xml

@@ -23,6 +23,7 @@
   <feature policy='require' name='clflushopt'/>
   <feature policy='require' name='intel-pt'/>
   <feature policy='require' name='pku'/>
+  <feature policy='require' name='stibp'/>
   <feature policy='require' name='xsaves'/>
   <feature policy='require' name='mbm_total'/>
   <feature policy='require' name='mbm_local'/>

tests/cputestdata/x86_64-cpuid-Xeon-Gold-5115-host.xml

@@ -24,6 +24,7 @@
   <feature name='clflushopt'/>
   <feature name='intel-pt'/>
   <feature name='pku'/>
+  <feature name='stibp'/>
   <feature name='xsaves'/>
   <feature name='mbm_total'/>
   <feature name='mbm_local'/>