From mboxrd@z Thu Jan 1 00:00:00 1970 From: lauraa@codeaurora.org (Laura Abbott) Date: Wed, 20 Aug 2014 18:20:32 -0700 Subject: [PATCHv3 0/7] Better page protections for arm64 Message-ID: <1408584039-12735-1-git-send-email-lauraa@codeaurora.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, This is v3 of the series to add stricter page protections for arm64 (Text should be read only, data/heap should be no execute etc.). There are quite a few more patches in this series Patch 1 - 4 address issues where text was ending up up in areas that needed to be read only. Two of these patches were sent out before[1] and two are new issues found with more testing (hotplug/suspend test cases) Patch 5 - 6 add support for patching kernel text via fixmap. This matches the same approach taken for arm. Patch 7 is the patch to map memory with appropriate permissions. This has been tested with 3 level page tables, 2 and 4 could use testing. Thanks, Laura [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-June/261458.html Laura Abbott (7): arm64: Treat handle_arch_irq as a function pointer arm64: Switch to ldr for loading the stub vectors arm64: Move cpu_resume into the text section arm64: Move some head.text functions to executable section arm64: Factor out fixmap initialiation from ioremap arm64: use fixmap for text patching when text is RO arm64: add better page protections to arm64 arch/arm64/Kconfig | 8 + arch/arm64/Kconfig.debug | 23 ++ arch/arm64/include/asm/cacheflush.h | 3 + arch/arm64/include/asm/fixmap.h | 8 +- arch/arm64/include/asm/insn.h | 2 + arch/arm64/include/asm/irq.h | 1 - arch/arm64/kernel/entry.S | 6 +- arch/arm64/kernel/head.S | 427 +++++++++++++++++++----------------- arch/arm64/kernel/insn.c | 74 ++++++- arch/arm64/kernel/irq.c | 2 + arch/arm64/kernel/jump_label.c | 2 +- arch/arm64/kernel/setup.c | 3 +- arch/arm64/kernel/sleep.S | 12 +- arch/arm64/kernel/vmlinux.lds.S | 18 ++ arch/arm64/mm/init.c | 1 + arch/arm64/mm/ioremap.c | 93 +------- arch/arm64/mm/mm.h | 2 + arch/arm64/mm/mmu.c | 397 ++++++++++++++++++++++++++++++--- 18 files changed, 740 insertions(+), 342 deletions(-) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation