Re: [PATCH] ARM: fix link warning with XIP + frame-pointer
From: Nathan Chancellor <hidden>
Date: 2021-01-12 16:27:55
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On Tue, Jan 12, 2021 at 04:46:40PM +0100, Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@arndb.de>
When frame pointers are used instead of the ARM unwinder,
and the kernel is built using clang with an external assembler
and CONFIG_XIP_KERNEL, every file produces two warnings
like:
arm-linux-gnueabi-ld: warning: orphan section `.ARM.extab' from `net/mac802154/util.o' being placed in section `.ARM.extab'
arm-linux-gnueabi-ld: warning: orphan section `.ARM.exidx' from `net/mac802154/util.o' being placed in section `.ARM.exidx'
The same fix was already merged for the normal (non-XIP)
linker script, with a longer description.
Fixes: c39866f268f8 ("arm/build: Always handle .ARM.exidx and .ARM.extab sections")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>Reviewed-by: Nathan Chancellor <redacted>
quoted hunk ↗ jump to hunk
--- arch/arm/kernel/vmlinux-xip.lds.S | 4 ++++ 1 file changed, 4 insertions(+)diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S index 4d0b0cd9222e..ddb70c65d525 100644 --- a/arch/arm/kernel/vmlinux-xip.lds.S +++ b/arch/arm/kernel/vmlinux-xip.lds.S@@ -43,6 +43,10 @@ SECTIONS ARM_DISCARD *(.alt.smp.init) *(.pv_table) +#ifndef CONFIG_ARM_UNWIND + *(.ARM.exidx) *(.ARM.exidx.*) + *(.ARM.extab) *(.ARM.extab.*) +#endif } . = XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR);-- 2.29.2
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