Changeset 57108 in vbox for trunk/src/VBox/HostDrivers/Support/linux

Timestamp:

Jul 28, 2015 11:49:23 AM (10 years ago)

Author:

vboxsync

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

101836

Message:

supdrv: Added SUPKERNELFEATURES_SMAP to SUPR0GetKernelFeatures and document the API in the header.

File:

• trunk/src/VBox/HostDrivers/Support/linux/SUPDrv-linux.c (modified) (2 diffs)

trunk/src/VBox/HostDrivers/Support/linux/SUPDrv-linux.c

@@ -1107 +1107 @@
 
 
-/**
- * Returns configuration flags of the host kernel.
- */
 SUPR0DECL(uint32_t) SUPR0GetKernelFeatures(void)
 {
@@ -1115 +1112 @@
 #ifdef CONFIG_PAX_KERNEXEC
     fFlags |= SUPKERNELFEATURES_GDT_READ_ONLY;
+#endif
+#ifdef CONFIG_X86_SMAP
+    if (ASMGetCR4() & X86_CR4_SMAP)
+        fFlags |= SUPKERNELFEATURES_SMAP;
 #endif
     return fFlags;