On Mon, Nov 02, 2015 at 02:03:13PM +0000, Mark Rutland wrote:

quoted

quoted

quoted

+/**
+ * struct smccc_res - Result from SMC/HVC call
+ * @a0-a3 result values from registers 0 to 3
+ */
+struct smccc_res {
+	unsigned long a0;
+	unsigned long a1;
+	unsigned long a2;
+	unsigned long a3;
+};

Are there any endianness considerations for this structure?

No, I can't find anything in the ARM SMC Calling Convention document
indicating that.

The calling conventions have no bearing on the structure, which is our
invention.

We stash register values (which don't have endianness) returned by the
firmeware into the structure in the sequences above (which appear
endian-clean to me).

Ah yes, the structure is populated by the kernel not the firmware, so
there's nothing to worry about. Thanks for the explanation.

Will
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