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arch/tile: avoid generating .eh_frame information in modules
The tile tool chain uses the .eh_frame information for backtracing. The vmlinux build drops any .eh_frame sections at link time, but when present in kernel modules, it causes a module load failure due to the presence of unsupported pc-relative relocations. When compiling to use compiler feedback support, the compiler by default omits .eh_frame information, so we don't see this problem. But when not using feedback, we need to explicitly suppress the .eh_frame. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Cc: stable@vger.kernel.org
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@ -26,6 +26,10 @@ $(error Set TILERA_ROOT or CROSS_COMPILE when building $(ARCH) on $(HOST_ARCH))
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endif
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endif
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# The tile compiler may emit .eh_frame information for backtracing.
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# In kernel modules, this causes load failures due to unsupported relocations.
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KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
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ifneq ($(CONFIG_DEBUG_EXTRA_FLAGS),"")
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KBUILD_CFLAGS += $(CONFIG_DEBUG_EXTRA_FLAGS)
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endif
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