Changeset 100097 in vbox for trunk/src/VBox/HostDrivers/Support/darwin/SUPLib-darwin.cpp

Timestamp:

Jun 7, 2023 5:45:33 PM (21 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

157790

Message:

HostDrivers/Support/darwin: Implement suplibOsIsNemSupportedWhenNoVtxOrAmdV() and query kern.hv.supported in order to determine whether NEM is available. Allows to mark hardware virtualization as supported so the GUI allows setting the CPU count for a VM , bugref:10454

File:

• trunk/src/VBox/HostDrivers/Support/darwin/SUPLib-darwin.cpp (modified) (2 diffs)

trunk/src/VBox/HostDrivers/Support/darwin/SUPLib-darwin.cpp

@@ -63 +63 @@
 #include <sys/fcntl.h>
 #include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
 #include <errno.h>
 #include <unistd.h>
@@ -330 +332 @@
 }
 
+
+DECLHIDDEN(bool) suplibOsIsNemSupportedWhenNoVtxOrAmdV(void)
+{
+# if ARCH_BITS == 64
+    int fHvSupported = 0;
+    size_t cb = sizeof(fHvSupported);
+    int rc = sysctlbyname("kern.hv.supported", &fHvSupported, &cb, NULL, 0);
+    if (   !rc
+        && cb == sizeof(uint32_t))
+        return fHvSupported == 1;
+
+    return false;
+# else
+    return false;
+#endif
+}
+
 #endif /* !IN_SUP_HARDENED_R3 */