On 03/12/13 15:40, Julien Grall wrote: > On ARM (32 bits and 64 bits), the double-word is 8-bytes aligned. This will > result on different structure from Xen and Linux repositories. > > As Linux is using __packed__ attribute, it must have a 4-bytes padding before > each "id" field. > > This change breaks guest block support with older kernel. IMHO, it's > acceptable > because Xen on ARM is still on Tech Preview and the hypercall ABI is not yet > freezed. > > Only one architecture (x86_32) doesn't have 64-bit ABI for the block > interface. > Don't add padding if Linux is compiled for this architecture.
I'm now satisfied that this is the right thing to do. Acked-by: David Vrabel <david.vra...@citrix.com> David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
