On Wed, 27 Jan 2016 11:55:23 +0100 Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> 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. > > This patch also introduces the _ASM_EXTABLE preprocessor macro (which > exists on x86 as well) and its _asm_extable assembly counterpart, as > shorthands to emit exception table entries. checkpatch speaketh truth: ERROR: #define of 'ARCH_HAS_RELATIVE_EXTABLE' is wrong - use Kconfig variables or standard guards instead #113: FILE: arch/arm64/include/asm/uaccess.h:56: -- 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
