On Wed, 29 Apr 2020, Josh Poimboeuf wrote: > From: Peter Zijlstra <[email protected]> > > Because of late module patching, a livepatch module needs to be able to > apply some of its relocations well after it has been loaded. Instead of > playing games with module_{dis,en}able_ro(), use existing text poking > mechanisms to apply relocations after module loading. > > So far only x86, s390 and Power have HAVE_LIVEPATCH but only the first > two also have STRICT_MODULE_RWX. > > This will allow removal of the last module_disable_ro() usage in > livepatch. The ultimate goal is to completely disallow making > executable mappings writable. > > [ jpoimboe: Split up patches. Use mod state to determine whether > memcpy() can be used. Test and add fixes. ] > > Cc: [email protected] > Cc: Heiko Carstens <[email protected]> > Cc: Gerald Schaefer <[email protected]> > Cc: Christian Borntraeger <[email protected]> > Suggested-by: Josh Poimboeuf <[email protected]> > Signed-off-by: Peter Zijlstra (Intel) <[email protected]> > Signed-off-by: Josh Poimboeuf <[email protected]> > Acked-by: Peter Zijlstra (Intel) <[email protected]> > Acked-by: Joe Lawrence <[email protected]> > Acked-by: Miroslav Benes <[email protected]>
Could we please get an Ack / Reviewed-by: for this patch from s390 folks? Thanks, -- Jiri Kosina SUSE Labs
