Re: [FIX] powerpc: discard .exit.data at runtime

[Michael Ellerman]

On Wed, 2015-07-10 at 23:28:28 UTC, Stephen Rothwell wrote:
> .exit.text is discarded at run time and there are some references from
> that to .exit.data, so we need to discard .exit.data at run time as well.
> 
> Fixes these errors:
> 
> `.exit.data' referenced in section `.exit.text' of drivers/built-in.o: 
> defined in discarded section `.exit.data' of drivers/built-in.o
> `.exit.data' referenced in section `.exit.text' of drivers/built-in.o: 
> defined in discarded section `.exit.data' of drivers/built-in.o
> 
> Signed-off-by: Stephen Rothwell 

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/4c8123181d692c5b78650ee5

cheers
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[PATCH FIX] powerpc: discard .exit.data at runtime

[Stephen Rothwell]

.exit.text is discarded at run time and there are some references from
that to .exit.data, so we need to discard .exit.data at run time as well.

Fixes these errors:

`.exit.data' referenced in section `.exit.text' of drivers/built-in.o: defined 
in discarded section `.exit.data' of drivers/built-in.o
`.exit.data' referenced in section `.exit.text' of drivers/built-in.o: defined 
in discarded section `.exit.data' of drivers/built-in.o

Signed-off-by: Stephen Rothwell 
---
 arch/powerpc/kernel/vmlinux.lds.S | 6 ++
 1 file changed, 6 insertions(+)

I have only seen this with an allyesconfig build which fails for other
reasons.

diff --git a/arch/powerpc/kernel/vmlinux.lds.S 
b/arch/powerpc/kernel/vmlinux.lds.S
index 1db685104ffc..d41fd0af8980 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -183,6 +183,12 @@ SECTIONS
*(.rela*)
}
 #endif
+   /* .exit.data is discarded at runtime, not link time,
+* to deal with references from .exit.text
+*/
+   .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
+   EXIT_DATA
+   }
 
/* freed after init ends here */
. = ALIGN(PAGE_SIZE);
-- 
2.5.3

-- 
Cheers,
Stephen Rothwells...@canb.auug.org.au
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