On 01/04/2016 06:46 AM, Will Deacon wrote: > On Sun, Jan 03, 2016 at 05:05:57PM +0100, Ard Biesheuvel wrote: >> Instead of using absolute addresses for both the exception location >> and the fixup, use offsets relative to the exception table entry values. >> Not only does this cut the size of the exception table in half, it is >> also a prerequisite for KASLR, since absolute exception table entries >> are subject to dynamic relocation, which is incompatible with the sorting >> of the exception table that occurs at build time. >> >> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> >> Cc: Will Deacon <will.deacon@xxxxxxx> >> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> >> --- >> >> Note that this patch supersedes the version I sent as part of the series that >> implements KASLR for arm64: http://thread.gmane.org/gmane.linux.kernel/2116531 >> >> arch/arm64/include/asm/assembler.h | 2 +- >> arch/arm64/include/asm/futex.h | 4 ++-- >> arch/arm64/include/asm/uaccess.h | 18 ++++++++++-------- >> arch/arm64/kernel/armv8_deprecated.c | 4 ++-- >> arch/arm64/mm/extable.c | 2 +- >> scripts/sortextable.c | 2 +- >> 6 files changed, 17 insertions(+), 15 deletions(-) > > This looks good to me, so for the arm64 part (i.e. this patch): > > Acked-by: Will Deacon <will.deacon@xxxxxxx> May I humbly ask why the [Finnish] you don't use the equivalent of the x86 _ASM_EXTABLE() macro? In fact, why don't we make that one generic, too? -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
