>>> Konrad Rzeszutek Wilk <kon...@kernel.org> 07/26/17 9:50 PM >>> >--- a/docs/misc/livepatch.markdown >+++ b/docs/misc/livepatch.markdown >@@ -279,6 +279,10 @@ It may also have some architecture-specific sections. For >example: >* Exception tables. >* Relocations for each of these sections. > >+Note that on ARM 32 the sections SHOULD be four byte aligned. Otherwise >+we risk hitting Data Abort exception as un-aligned manipulation of data is >+prohibited on ARM 32.
This (and hence the rest of the patch) is not in line with the outcome of the earlier discussion we had. Nothing is wrong with a section having smaller alignment, as long as there are no 32-bit (or wider, but I don't think there are any such) relocations against such a section. And even if there were, I think it should rather be the code doing the relocations needing to cope, as I don't think the ARM ELF ABI imposes any such restriction. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
