Patch "microblaze: fix endian handling" has been added to the 4.14-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
microblaze: fix endian handling
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
microblaze-fix-endian-handling.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
71e7673dadfdae0605d4c1f66ecb4b045c79fe0fMon Sep 17 00:00:00 2001
From: Arnd Bergmann <[email protected]>
Date: Tue, 2 Jan 2018 12:47:19 +0100
Subject: microblaze: fix endian handling
From: Arnd Bergmann <[email protected]>
commit 71e7673dadfdae0605d4c1f66ecb4b045c79fe0f upstream.
Building an allmodconfig kernel fails horribly because of endian mismatch. It turns out that the -mlittle-endian switch was not honored at all as we were using the wrong Kconfig symbol and failing to apply CPUFLAGS to the CFLAGS. Finally, the linker flags did not get set right.
This addresses all three of those issues, which now lets me build both big-endian and little-endian kernels for testing.
--- arch/microblaze/Makefile | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-)
arch/microblaze/Makefile +11 -6
@@ -36,16 +36,21 @@ endif CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_DIV) += -mno-xl-soft-div CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare -CPUFLAGS-$(CONFIG_BIG_ENDIAN) += -mbig-endian -CPUFLAGS-$(CONFIG_LITTLE_ENDIAN) += -mlittle-endian + +ifdef CONFIG_CPU_BIG_ENDIAN +KBUILD_CFLAGS += -mbig-endian +KBUILD_AFLAGS += -mbig-endian +LD += -EB +else +KBUILD_CFLAGS += -mlittle-endian +KBUILD_AFLAGS += -mlittle-endian +LD += -EL +endif CPUFLAGS-1 += $(call cc-option,-mcpu=v$(CPU_VER)) # r31 holds current when in kernel mode -KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2) - -LDFLAGS := -LDFLAGS_vmlinux := +KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-y) $(CPUFLAGS-1) $(CPUFLAGS-2) head-y := arch/microblaze/kernel/head.o libs-y += arch/microblaze/lib/
Patches currently in stable-queue which might be from [email protected] are
queue-4.14/microblaze-fix-endian-handling.patch queue-4.14/x86-oprofile-fix-bogus-gcc-8-warning-in-nmi_setup.patch queue-4.14/cfg80211-fix-cfg80211_beacon_dup.patch queue-4.14/kbuild-always-define-endianess-in-kconfig.h.patch