forked from luck/tmp_suning_uos_patched
b34006c425
Similar to the arm64 case, 64-bit x86 can benefit from using relative references rather than absolute ones when emitting struct jump_entry instances. Not only does this reduce the memory footprint of the entries themselves by 33%, it also removes the need for carrying relocation metadata on relocatable builds (i.e., for KASLR) which saves a fair chunk of .init space as well (although the savings are not as dramatic as on arm64) Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-s390@vger.kernel.org Cc: Arnd Bergmann <arnd@arndb.de> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Kees Cook <keescook@chromium.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jessica Yu <jeyu@kernel.org> Link: https://lkml.kernel.org/r/20180919065144.25010-7-ard.biesheuvel@linaro.org |
||
|---|---|---|
| .. | ||
| arch/x86 | ||
| Documentation | ||
| .gitignore | ||
| arch.h | ||
| Build | ||
| builtin-check.c | ||
| builtin-orc.c | ||
| builtin.h | ||
| cfi.h | ||
| check.c | ||
| check.h | ||
| elf.c | ||
| elf.h | ||
| Makefile | ||
| objtool.c | ||
| orc_dump.c | ||
| orc_gen.c | ||
| orc.h | ||
| special.c | ||
| special.h | ||
| sync-check.sh | ||
| warn.h | ||