kernel/arch/powerpc/Makefile, branch linux-4.1.y

powerpc: Convert relocs_check to a shell script using grep

2015-03-23T03:47:39Z

This runs a bit faster and removes another use of perl from the kernel build. Signed-off-by: Stephen Rothwell Acked-By: Tony Breeds Signed-off-by: Michael Ellerman

kbuild: do not add $(call ...) to invoke cc-version or cc-fullversion

2015-01-09T16:25:44Z

The macros cc-version, cc-fullversion and ld-version take no argument. It is not necessary to add $(call ...) to invoke them. Signed-off-by: Masahiro Yamada Acked-by: Helge Deller [parisc] Signed-off-by: Michal Marek

powerpc: Add POWER8 CPU selection

2014-09-25T13:14:49Z

This allows the user to build a kernel targeted at POWER8 (ie gcc -mcpu=power8). Signed-off-by: Anton Blanchard Signed-off-by: Michael Ellerman

Merge branch 'merge' into next

2014-05-28T03:30:12Z

Merge the binutils and kexec fixes.

powerpc: Fix 64 bit builds with binutils 2.24

2014-05-28T03:24:05Z

With binutils 2.24, various 64 bit builds fail with relocation errors such as arch/powerpc/kernel/built-in.o: In function `exc_debug_crit_book3e': (.text+0x165ee): relocation truncated to fit: R_PPC64_ADDR16_HI against symbol `interrupt_base_book3e' defined in .text section in arch/powerpc/kernel/built-in.o arch/powerpc/kernel/built-in.o: In function `exc_debug_crit_book3e': (.text+0x16602): relocation truncated to fit: R_PPC64_ADDR16_HI against symbol `interrupt_end_book3e' defined in .text section in arch/powerpc/kernel/built-in.o The assembler maintainer says: I changed the ABI, something that had to be done but unfortunately happens to break the booke kernel code. When building up a 64-bit value with lis, ori, shl, oris, ori or similar sequences, you now should use @high and @higha in place of @h and @ha. @h and @ha (and their associated relocs R_PPC64_ADDR16_HI and R_PPC64_ADDR16_HA) now report overflow if the value is out of 32-bit signed range. ie. @h and @ha assume you're building a 32-bit value. This is needed to report out-of-range -mcmodel=medium toc pointer offsets in @toc@h and @toc@ha expressions, and for consistency I did the same for all other @h and @ha relocs. Replacing @h with @high in one strategic location fixes the relocation errors. This has to be done conditionally since the assembler either supports @h or @high but not both. Cc: Signed-off-by: Guenter Roeck Signed-off-by: Benjamin Herrenschmidt

Merge remote-tracking branch 'anton/abiv2' into next

2014-05-05T10:57:12Z

This series adds support for building the powerpc 64-bit LE kernel using the new ABI v2. We already supported running ABI v2 userspace programs but this adds support for building the kernel itself using the new ABI.

ppc476: Enable a linker work around for IBM errata #46

2014-04-30T22:26:34Z

This patch adds an option to enable a work around for an icache bug on 476 that can cause execution of stale instructions when falling through pages (IBM errata #46). It requires a recent version of binutils which supports the --ppc476-workaround option. The work around enables the appropriate linker options and ensures that all module output sections are aligned to 4K page boundaries. The work around is only required when building modules. Signed-off-by: Alistair Popple Signed-off-by: Benjamin Herrenschmidt

powerpc: Build little endian ppc64 kernel with ABIv2

2014-04-23T00:08:07Z

Build the little endian ppc64 kernel with ABIv2 if the toolchain supports it. We can identify an ABIv2 capable toolchain by the -mabi=elfv2 compiler flag. Signed-off-by: Anton Blanchard

powerpc: Don't build assembly files with ABIv2

2014-04-23T00:02:04Z

We avoid ABIv2 when building c files since commit b2ca8c89 (powerpc: Don't use ELFv2 ABI to build the kernel). Do the same for assembly files. Signed-off-by: Anton Blanchard

powerpc/le: Avoid creatng R_PPC64_TOCSAVE relocations for modules.

2014-04-09T02:53:44Z

When building modules with a native le toolchain the linker will generate R_PPC64_TOCSAVE relocations when it's safe to omit saving r2 on a plt call. This isn't helpful in the conext of a kernel module and the kernel will fail to load those modules with an error like: nf_conntrack: Unknown ADD relocation: 109 This patch tells the linker to avoid createing R_PPC64_TOCSAVE relocations allowing modules to load. Signed-off-by: Tony Breeds Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt