From: Nicholas Piggin Date: Sat, 26 Nov 2016 03:20:31 +0000 (+1100) Subject: powerpc/64: Fix placement of .text to be immediately following .head.text X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=dadc4a1bb9f0095343ed9dd4f1d9f3825d7b3e45;p=linux.git 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 57f266497d81 ("powerpc: Use gas sections for arranging exception vectors") and was caught with the scripted head section checker (not yet merged). Fixes: 57f266497d81 ("powerpc: Use gas sections for arranging exception vectors") Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index 8295f51c1a5f9..7394b770ae1f6 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -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