On 14/05/15 18:00, Julien Grall wrote: > Hi all, > > ARM64 Linux is supporting both 4KB and 64KB page granularity. Although, Xen > hypercall interface and PV protocol are always based on 4KB page granularity. > > Any attempt to boot a Linux guest with 64KB pages enabled will result to a > guest crash. > > This series is a first attempt to allow those Linux running with the current > hypercall interface and PV protocol. > > This solution has been chosen because we want to run Linux 64KB in released > Xen ARM version or/and platform using an old version of Linux DOM0.
The key problem I see with this approach is the confusion between guest page size and Xen page size. This is going to be particularly problematic since the majority of development/usage will remain on x86 where PAGE_SIZE == XEN_PAGE_SIZE. I think it would be nice to keep XEN_PAGE_SIZE etc out of front and backend drivers. Perhaps with a suitable set of helper functions? 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/
