From mboxrd@z Thu Jan 1 00:00:00 1970 From: ard.biesheuvel@linaro.org (Ard Biesheuvel) Date: Fri, 13 Mar 2015 13:07:24 +0100 Subject: [PATCH v2 0/8] ARM kernel size fixes Message-ID: <1426248452-4773-1-git-send-email-ard.biesheuvel@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This series is a suggested approach to preventing linker failures on large kernels. It is somewhat unpolished, and posted for comments/testing primarily. The issues were found and reported by Arnd Bergmann, and these patches are loosely based on his initial approach to work around them. Changes since v1: - Updated PROCINFO patch (#1) to refer to the base of the struct by name, and simplify the calling code (rmk) - Updated b_far/bl_far patch (#3) to remove ARM/THUMB alternatives and use a conditionally defined PC_BIAS instead. Also added b_abs/bl_abs versions, which can only be used for absolute branches but can be implemented in fewer instructions. Added conditional branch support as well. - introduce (#6) and use (#7) the .text.fixup input section which gets emitted after each .text section for each .o - added patch #8 that allows the kallsyms data to be moved to .data Ard Biesheuvel (8): ARM: replace PROCINFO embedded branch with relative offset ARM: move HYP text to end of .text section ARM: add macro to perform far branches (b/bl) ARM: use bl_far to call __hyp_stub_install_secondary from the .data section ARM: move the .idmap.text section closer to .head.text asm-generic: introduce .text.fixup input section ARM: keep .text and .fixup regions together kallsyms: allow kallsyms data to reside in the .data section arch/arm/Kconfig | 1 + arch/arm/include/asm/assembler.h | 83 +++++++++++++++++++++++++++++++++++ arch/arm/include/asm/futex.h | 2 +- arch/arm/include/asm/uaccess.h | 10 ++--- arch/arm/include/asm/word-at-a-time.h | 2 +- arch/arm/kernel/entry-armv.S | 2 +- arch/arm/kernel/head.S | 14 +++--- arch/arm/kernel/sleep.S | 2 +- arch/arm/kernel/swp_emulate.c | 2 +- arch/arm/kernel/vmlinux.lds.S | 15 ++++--- arch/arm/kvm/init.S | 5 +-- arch/arm/kvm/interrupts.S | 4 +- arch/arm/lib/clear_user.S | 2 +- arch/arm/lib/copy_to_user.S | 2 +- arch/arm/lib/csumpartialcopyuser.S | 2 +- arch/arm/mm/alignment.c | 6 +-- arch/arm/mm/proc-arm1020.S | 4 +- arch/arm/mm/proc-arm1020e.S | 4 +- arch/arm/mm/proc-arm1022.S | 4 +- arch/arm/mm/proc-arm1026.S | 4 +- arch/arm/mm/proc-arm720.S | 4 +- arch/arm/mm/proc-arm740.S | 4 +- arch/arm/mm/proc-arm7tdmi.S | 4 +- arch/arm/mm/proc-arm920.S | 4 +- arch/arm/mm/proc-arm922.S | 4 +- arch/arm/mm/proc-arm925.S | 4 +- arch/arm/mm/proc-arm926.S | 4 +- arch/arm/mm/proc-arm940.S | 4 +- arch/arm/mm/proc-arm946.S | 4 +- arch/arm/mm/proc-arm9tdmi.S | 4 +- arch/arm/mm/proc-fa526.S | 4 +- arch/arm/mm/proc-feroceon.S | 5 ++- arch/arm/mm/proc-macros.S | 4 ++ arch/arm/mm/proc-mohawk.S | 4 +- arch/arm/mm/proc-sa110.S | 4 +- arch/arm/mm/proc-sa1100.S | 4 +- arch/arm/mm/proc-v6.S | 4 +- arch/arm/mm/proc-v7.S | 28 ++++++------ arch/arm/mm/proc-v7m.S | 4 +- arch/arm/mm/proc-xsc3.S | 4 +- arch/arm/mm/proc-xscale.S | 4 +- arch/arm/nwfpe/entry.S | 2 +- include/asm-generic/vmlinux.lds.h | 14 +++++- init/Kconfig | 4 ++ scripts/kallsyms.c | 2 +- 45 files changed, 200 insertions(+), 101 deletions(-) -- 1.8.3.2