[PATCHv2 0/4] WX checking for arm64
Hi, This is v2 of the implementation to check for writable and executable pages on arm64. Major changes since v1: - I realized my concerns about initialization and registration were unfounded so registration to register page tables with debugfs is simplified. - New patch to remove max_addr since it was pointed out it was unused. - Rebased to include changes for the EFI page tables as well. - Checking is now only done on the init_mm page tables. It was mentioned that we should check the hyp page tables as well but that can be follow on work. - Checking for UXN per suggestion from Mark Rutland. Laura Abbott (4): arm64: dump: Make ptdump debugfs a separate option arm64: dump: Make the page table dumping seq_file optional arm64: dump: Remove max_addr arm64: dump: Add checking for writable and exectuable pages arch/arm64/Kconfig.debug | 34 ++- arch/arm64/include/asm/ptdump.h| 22 +++--- arch/arm64/mm/Makefile | 3 +- arch/arm64/mm/dump.c | 89 ++ arch/arm64/mm/mmu.c| 2 + arch/arm64/mm/ptdump_debugfs.c | 31 + drivers/firmware/efi/arm-runtime.c | 5 +-- 7 files changed, 147 insertions(+), 39 deletions(-) create mode 100644 arch/arm64/mm/ptdump_debugfs.c -- 2.7.4
[PATCHv2 0/4] WX checking for arm64
Hi, This is v2 of the implementation to check for writable and executable pages on arm64. Major changes since v1: - I realized my concerns about initialization and registration were unfounded so registration to register page tables with debugfs is simplified. - New patch to remove max_addr since it was pointed out it was unused. - Rebased to include changes for the EFI page tables as well. - Checking is now only done on the init_mm page tables. It was mentioned that we should check the hyp page tables as well but that can be follow on work. - Checking for UXN per suggestion from Mark Rutland. Laura Abbott (4): arm64: dump: Make ptdump debugfs a separate option arm64: dump: Make the page table dumping seq_file optional arm64: dump: Remove max_addr arm64: dump: Add checking for writable and exectuable pages arch/arm64/Kconfig.debug | 34 ++- arch/arm64/include/asm/ptdump.h| 22 +++--- arch/arm64/mm/Makefile | 3 +- arch/arm64/mm/dump.c | 89 ++ arch/arm64/mm/mmu.c| 2 + arch/arm64/mm/ptdump_debugfs.c | 31 + drivers/firmware/efi/arm-runtime.c | 5 +-- 7 files changed, 147 insertions(+), 39 deletions(-) create mode 100644 arch/arm64/mm/ptdump_debugfs.c -- 2.7.4
