Add new capability HAX_CAP_CPUID

wcwang · wcwang · commit 72e53fabaf2c · 2020-03-25T10:55:27.000+08:00
Add the capability flag HAX_CAP_CPUID to indicate the CPUID feature is
already supported. This capability information is used for user space
query.

Signed-off-by: Wenchao Wang &lt;wenchao.wang@intel.com&gt;
diff --git a/core/hax.c b/core/hax.c
@@ -373,6 +373,7 @@ int hax_get_capability(void *buf, int bufLeng, int *outLength)
         cap->winfo |= HAX_CAP_TUNNEL_PAGE;
         cap->winfo |= HAX_CAP_RAM_PROTECTION;
         cap->winfo |= HAX_CAP_DEBUG;
+        cap->winfo |= HAX_CAP_CPUID;
         if (cpu_data->vmx_info._ept_cap) {
             cap->winfo |= HAX_CAP_EPT;
         }
diff --git a/include/hax_interface.h b/include/hax_interface.h
@@ -194,6 +194,7 @@ struct hax_module_version {
 #define HAX_CAP_RAM_PROTECTION     (1 << 6)
 #define HAX_CAP_DEBUG              (1 << 7)
 #define HAX_CAP_IMPLICIT_RAMBLOCK  (1 << 8)
+#define HAX_CAP_CPUID              (1 << 9)
 
 struct hax_capabilityinfo {
     /*

Original file line number	Diff line number	Diff line change
`@@ -373,6 +373,7 @@ int hax_get_capability(void buf, int bufLeng, int outLength)`
`373`	`373`	`cap->winfo \|= HAX_CAP_TUNNEL_PAGE;`
`374`	`374`	`cap->winfo \|= HAX_CAP_RAM_PROTECTION;`
`375`	`375`	`cap->winfo \|= HAX_CAP_DEBUG;`
	`376`	`+ cap->winfo \|= HAX_CAP_CPUID;`
`376`	`377`	`if (cpu_data->vmx_info._ept_cap) {`
`377`	`378`	`cap->winfo \|= HAX_CAP_EPT;`
`378`	`379`	`}`