Re: [PATCH 04/12] VMCI: device driver implementaton.
From: Greg KH <gregkh@linuxfoundation.org>
Date: 2012-10-30 02:20:50
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From: Greg KH <gregkh@linuxfoundation.org>
Date: 2012-10-30 02:20:50
Also in:
lkml
On Mon, Oct 29, 2012 at 06:04:15PM -0700, George Zhang wrote:
+/*
+ * vmci_get_context_id() - Gets the current context ID.
+ *
+ * Returns the current context ID. Note that since this is accessed only
+ * from code running in the host, this always returns the host context ID.
+ */
+u32 vmci_get_context_id(void)
+{
+ if (vmci_guest_code_active()) {
+ return vmci_get_vm_context_id();
+ } else if (vmci_host_code_active()) {
+ return VMCI_HOST_CONTEXT_ID;
+ } else {
+ return VMCI_INVALID_ID;
+ }
+}
+EXPORT_SYMBOL_GPL(vmci_get_context_id);
checkpatch didn't complain about too many { } here?
+/*
+ * vmci_version() - Returns the version of the driver.
+ *
+ * Returns the version of the VMCI driver.
+ */
+u32 vmci_version(void)
+{
+ return VMCI_VERSION;
+}
+EXPORT_SYMBOL_GPL(vmci_version);Why is this needed? Why would a kernel driver ever care about this? thanks, greg k-h