Commit-ID: 553bbc11aa6c1f9e0f529a06aeeca15fbe4a3985 Gitweb: http://git.kernel.org/tip/553bbc11aa6c1f9e0f529a06aeeca15fbe4a3985 Author: Arnd Bergmann <a...@arndb.de> AuthorDate: Wed, 16 Nov 2016 15:17:09 +0100 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 17 Nov 2016 07:34:58 +0100
x86/boot: Avoid warning for zero-filling .bss The latest binutils are warning about a .fill directive with an explicit value in a .bss section: arch/x86/kernel/head_32.S: Assembler messages: arch/x86/kernel/head_32.S:677: Warning: ignoring fill value in section `.bss..page_aligned' arch/x86/kernel/head_32.S:679: Warning: ignoring fill value in section `.bss..page_aligned' This comes from the 'ENTRY()' macro padding the space between the symbols with 'nop' via: .align 4,0x90 Open-coding the .globl directive without the padding avoids that warning, as all the symbols are already page aligned. Signed-off-by: Arnd Bergmann <a...@arndb.de> Cc: Andy Lutomirski <l...@kernel.org> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Denys Vlasenko <dvlas...@redhat.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Josh Poimboeuf <jpoim...@redhat.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Link: http://lkml.kernel.org/r/20161116141726.2013389-1-a...@arndb.de Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/kernel/head_32.S | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index b6b2f02..2dabea4 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -665,14 +665,17 @@ __PAGE_ALIGNED_BSS initial_pg_pmd: .fill 1024*KPMDS,4,0 #else -ENTRY(initial_page_table) +.globl initial_page_table +initial_page_table: .fill 1024,4,0 #endif initial_pg_fixmap: .fill 1024,4,0 -ENTRY(empty_zero_page) +.globl empty_zero_page +empty_zero_page: .fill 4096,1,0 -ENTRY(swapper_pg_dir) +.globl swapper_pg_dir +swapper_pg_dir: .fill 1024,4,0 EXPORT_SYMBOL(empty_zero_page)
