Commit f8850abb authored Oct 09, 2016 by Helge Deller

parisc: Fix kernel memory layout regarding position of __gp



Architecturally we need to keep __gp below 0x1000000.

But because of ftrace and tracepoint support, the RO_DATA_SECTION now gets much
bigger than it was before. By moving the linkage tables before RO_DATA_SECTION
we can avoid that __gp gets positioned at a too high address.

Cc: stable@vger.kernel.org # 4.4+
Signed-off-by: Helge Deller <deller@gmx.de>

parent 65bf34f5

arch/parisc/kernel/vmlinux.lds.S

+5 −2

Original line number	Diff line number	Diff line
		@@ -90,8 +90,9 @@ SECTIONS
		/* Start of data section */
		_sdata = .;

		RO_DATA_SECTION(8)

		/* Architecturally we need to keep __gp below 0x1000000 and thus
		* in front of RO_DATA_SECTION() which stores lots of tracepoint
		* and ftrace symbols. */
		#ifdef CONFIG_64BIT
		. = ALIGN(16);
		/* Linkage tables */
		@@ -106,6 +107,8 @@ SECTIONS
		}
		#endif

		RO_DATA_SECTION(8)

		/* unwind info */
		.PARISC.unwind : {
		__start___unwind = .;