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linux: arc: disable kernel unwinding to fix modules loading

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With update of binutils for ARC (this is now based on upstream 2.26)
we noticed issues with loadable kernel modules.

Something like that was happening:
--------------------->8-------------------
mbcache: unknown relocation: 49
insmod: can't insert './mbcache.ko': invalid module format
--------------------->8-------------------

More details could be found in that discussion in binutils mailing list:
http://thread.gmane.org/gmane.comp.gnu.binutils/74662

As of now the simplest work-around is to disable in-kernel unwinder
for now. That will at least allow us to use modules again.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: John Crispin <john@phrozen.org>
This commit is contained in:
Alexey Brodkin 2016-06-22 15:47:20 +03:00 committed by John Crispin
parent 776613eeba
commit acd41539d6
2 changed files with 2 additions and 5 deletions
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3
target/linux/arc770/config-4.4
View file

@ -18,7 +18,7 @@ CONFIG_ARC_CURR_IN_REG=y
CONFIG_ARC_DBG=y
# CONFIG_ARC_DBG_TLB_MISS_COUNT is not set
# CONFIG_ARC_DBG_TLB_PARANOIA is not set
CONFIG_ARC_DW2_UNWIND=y
# CONFIG_ARC_DW2_UNWIND is not set
CONFIG_ARC_EMUL_UNALIGNED=y
# CONFIG_ARC_FPU_SAVE_RESTORE is not set
CONFIG_ARC_HAS_DCACHE=y
@ -78,7 +78,6 @@ CONFIG_HAVE_FUTEX_CMPXCHG=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_HAVE_NET_DSA=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_PERF_EVENTS=y

4
target/linux/archs38/config-4.4
View file

@ -15,7 +15,7 @@ CONFIG_ARC_CURR_IN_REG=y
CONFIG_ARC_DBG=y
# CONFIG_ARC_DBG_TLB_MISS_COUNT is not set
# CONFIG_ARC_DBG_TLB_PARANOIA is not set
CONFIG_ARC_DW2_UNWIND=y
# CONFIG_ARC_DW2_UNWIND is not set
CONFIG_ARC_HAS_COH_CACHES=y
CONFIG_ARC_HAS_DCACHE=y
# CONFIG_ARC_HAS_DCCM is not set
@ -85,7 +85,6 @@ CONFIG_HAVE_FUTEX_CMPXCHG=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
CONFIG_HAVE_NET_DSA=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_PERF_EVENTS=y
@ -175,7 +174,6 @@ CONFIG_SRCU=y
CONFIG_STACKTRACE=y
CONFIG_STMMAC_ETH=y
CONFIG_STMMAC_PLATFORM=y
# CONFIG_SUNXI_SRAM is not set
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_UNINLINE_SPIN_UNLOCK=y
CONFIG_USB_SUPPORT=y