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powerpc/64: Fix placement of .text to be immediately following .head.text 

Do not introduce any additional alignment. Placement of text section
will be set by fixed section macros. Without this, output section
alignment defaults to 4096, which makes BookE text section start at
0x1000 when it is expected to start at 0x100.

This was introduced by commit 57f266497d ("powerpc: Use gas sections
for arranging exception vectors") and was caught with the scripted head
section checker (not yet merged).

Fixes: 57f266497d ("powerpc: Use gas sections for arranging exception vectors")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
hifive-unleashed-5.1
Nicholas Piggin 2016-11-26 14:20:31 +11:00 committed by Michael Ellerman
parent 409bf7f8a0
commit dadc4a1bb9
1 changed files with 9 additions and 0 deletions
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9
arch/powerpc/kernel/vmlinux.lds.S
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@ -94,8 +94,17 @@ SECTIONS
* detected, and will result in a crash at boot due to offsets being
* wrong.
*/
#ifdef CONFIG_PPC64
/*
* BLOCK(0) overrides the default output section alignment because
* this needs to start right after .head.text in order for fixed
* section placement to work.
*/
.text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) {
#else
.text : AT(ADDR(.text) - LOAD_OFFSET) {
ALIGN_FUNCTION();
#endif
/* careful! __ftr_alt_* sections need to be close to .text */
*(.text .fixup __ftr_alt_* .ref.text)
SCHED_TEXT