On Tue, 28 Apr 2015, Jiri Kosina wrote: > Offset that has been chosen for kaslr during kernel decompression can be > easily computed as a difference between _text and __START_KERNEL. We are > already making use of this in dump_kernel_offset() notifier and in > arch_crash_save_vmcoreinfo(). > > Introduce kaslr_offset() that makes this computation instead of > hard-coding it, so that other kernel code (such as live patching) can make > use of it. Also convert existing users to make use of it. > > Signed-off-by: Jiri Kosina <jkosina@xxxxxxx> > --- > > It'd be great to potentially have Ack from x86 guys for this patch so that > I could take it through livepatching.git with the depending 2/2 patch. > Thanks. > > v1 -> v2: convert arch_crash_save_vmcoreinfo(), as spotted by Josh > Poimboeuf. FWIW this patch is equivalent transofrmation without any effects on the resulting code: $ diff -u vmlinux.old.asm vmlinux.new.asm --- vmlinux.old.asm 2015-04-28 17:55:19.520983368 +0200 +++ vmlinux.new.asm 2015-04-28 17:55:24.141206072 +0200 @@ -1,5 +1,5 @@ -vmlinux.old: file format elf64-x86-64 +vmlinux.new: file format elf64-x86-64 Disassembly of section .text: $ -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
