blackbird-op-linux - Blackbird™ Linux sources for OpenPOWER

	Commit message (Collapse)	Author	Age	Files	Lines
*	powerpc/module: Handle R_PPC64_ENTRY relocations	Ulrich Weigand	2016-01-31	1	-0/+2
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	commit a61674bdfc7c2bf909c4010699607b62b69b7bec upstream. GCC 6 will include changes to generated code with -mcmodel=large, which is used to build kernel modules on powerpc64le. This was necessary because the large model is supposed to allow arbitrary sizes and locations of the code and data sections, but the ELFv2 global entry point prolog still made the unconditional assumption that the TOC associated with any particular function can be found within 2 GB of the function entry point: func: addis r2,r12,(.TOC.-func)@ha addi r2,r2,(.TOC.-func)@l .localentry func, .-func To remove this assumption, GCC will now generate instead this global entry point prolog sequence when using -mcmodel=large: .quad .TOC.-func func: .reloc ., R_PPC64_ENTRY ld r2, -8(r12) add r2, r2, r12 .localentry func, .-func The new .reloc triggers an optimization in the linker that will replace this new prolog with the original code (see above) if the linker determines that the distance between .TOC. and func is in range after all. Since this new relocation is now present in module object files, the kernel module loader is required to handle them too. This patch adds support for the new relocation and implements the same optimization done by the GNU linker. Signed-off-by: Ulrich Weigand <ulrich.weigand@de.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
*	powerpc: Handle new ELFv2 module relocations	Rusty Russell	2014-04-23	1	-1/+6
\| \| \| \| \| \| \|	The new ELF ABI tends to use R_PPC64_REL16_LO and R_PPC64_REL16_HA relocations (PC-relative), so implement them. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
*	powerpc: modules implement R_PPC64_TOCSAVE relocation.	Rusty Russell	2014-04-23	1	-1/+4
\| \| \| \|	Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
*	powerpc: Fix little endian coredumps	Anton Blanchard	2013-08-14	1	-2/+6
\| \| \| \| \| \| \|	We need to set ELF_DATA correctly on LE coredumps. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
*	powerpc: Simplify logic in include/uapi/asm/elf.h	Anton Blanchard	2013-08-14	1	-12/+7
\| \| \| \| \| \| \| \|	Simplify things by putting all the 32bit and 64bit defines together instead of in two spots. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
*	UAPI: (Scripted) Disintegrate arch/powerpc/include/asm	David Howells	2012-10-09	1	-0/+307
	Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>