Changeset 35294 in vbox for trunk/include/iprt

Timestamp:

Dec 22, 2010 12:13:10 PM (14 years ago)

Author:

vboxsync

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

69143

Message:

Linux hosts: quick fix for CONFIG_DEBUG_SET_MODULE_RONX

File:

• trunk/include/iprt/mem.h (modified) (1 diff)

trunk/include/iprt/mem.h

@@ -401 +401 @@
  */
 RTR0DECL(int) RTR0MemExecDonate(void *pvMemory, size_t cb) RT_NO_THROW;
+
+/**
+ * Allocate read+write+execute memory to the exec heap.
+ *
+ * This API is specific to AMD64 and Linux/GNU. A kernel module that desires to
+ * use RTMemExecAlloc on AMD64 Linux/GNU will have to initialize some allocated
+ * memory in the module range if it wishes for GCC generated code to work. GCC
+ * can only generate modules that work in the address range ~2GB to ~0 currently.
+ * As RTR0MemExecDonate() does not work if CONFIG_DEBUG_SET_MODULE_RONX is
+ * enabled, use a different approach (only very recent Linux kernels).
+ *
+ * The API only accept one single initialization.
+ *
+ * @returns IPRT status code.
+ * @param   cb          The size of the memory block.
+ */
+RTR0DECL(int) RTR0MemExecInit(size_t cb) RT_NO_THROW;
 #endif /* R0+AMD64+LINUX */