powerpc/boot: Request no dynamic linker for boot wrapper
authorNicholas Piggin <npiggin@gmail.com>
Mon, 28 Nov 2016 01:42:26 +0000 (12:42 +1100)
committerMichael Ellerman <mpe@ellerman.id.au>
Mon, 5 Dec 2016 02:02:25 +0000 (13:02 +1100)
commitff45000fcb56b5b0f1a14a865d3541746d838a0a
treecddec161a0d5b9df36a82a36575bf604edf585c5
parentc02e0349d7e9eec8a6414840dd34b8d26e0c047b
powerpc/boot: Request no dynamic linker for boot wrapper

The boot wrapper performs its own relocations and does not require
PT_INTERP segment. However currently we don't tell the linker that.

Prior to binutils 2.28 that works OK. But since binutils commit
1a9ccd70f9a7 ("Fix the linker so that it will not silently generate ELF
binaries with invalid program headers. Fix readelf to report such
invalid binaries.") binutils tries to create a program header segment
due to PT_INTERP, and the link fails because there is no space for it:

  ld: arch/powerpc/boot/zImage.pseries: Not enough room for program headers, try linking with -N
  ld: final link failed: Bad value

So tell the linker not to do that, by passing --no-dynamic-linker.

Cc: stable@vger.kernel.org
Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Drop dependency on ld-version.sh and massage change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/boot/wrapper