| Message ID | 1449665095-20774-3-git-send-email-mark.rutland@arm.com |
|---|---|
| State | Accepted |
| Commit | 5b28cd9d084eca8ddc46270d2720305bfd40e348 |
| Headers | show |
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index 1ee2c39..a64340d 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -112,7 +112,6 @@ SECTIONS *(.got) /* Global offset table */ } - ALIGN_DEBUG_RO RO_DATA(PAGE_SIZE) EXCEPTION_TABLE(8) NOTES @@ -127,7 +126,6 @@ SECTIONS ARM_EXIT_KEEP(EXIT_TEXT) } - ALIGN_DEBUG_RO_MIN(16) .init.data : { INIT_DATA INIT_SETUP(16)
Currently we place an ALIGN_DEBUG_RO between text and data for the .text and .init sections, and depending on configuration each of these may result in up to SECTION_SIZE bytes worth of padding (for DEBUG_RODATA_ALIGN). We make no distinction between the text and data in each of these sections at any point when creating the initial page tables in head.S. We also make no distinction when modifying the tables; __map_memblock, fixup_executable, mark_rodata_ro, and fixup_init only work at section granularity. Thus this padding is unnecessary. For the spit between init text and data we impose a minimum alignment of 16 bytes, but this is also unnecessary. The init data is output immediately after the padding before any symbols are defined, so this is not required to keep a symbol for linker a section array correctly associated with the data. Any objects within the section will be given at least their usual alignment regardless. This patch removes the redundant padding. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Jeremy Linton <jeremy.linton@arm.com> Cc: Laura Abbott <labbott@fedoraproject.org> Cc: Will Deacon <will.deacon@arm.com> --- arch/arm64/kernel/vmlinux.lds.S | 2 -- 1 file changed, 2 deletions(-) -- 1.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel