On 24/07/15 10:39, Julien Grall wrote: > Hi David, > > On 24/07/15 10:28, David Vrabel wrote: >> On 09/07/15 21:42, Julien Grall wrote: >>> The Xen hypercall interface is always using 4K page granularity on ARM >>> and x86 architecture. >>> >>> With the incoming support of 64K page granularity for ARM64 guest, it >>> won't be possible to re-use the Linux page definition in Xen drivers. >>> >>> Introduce Xen page definition helpers based on the Linux page >>> definition. They have exactly the same name but prefixed with >>> XEN_/xen_ prefix. >>> >>> Also modify page_to_pfn to use new Xen page definition. >>> >>> Signed-off-by: Julien Grall <julien.gr...@citrix.com> >>> Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> >>> Cc: Boris Ostrovsky <boris.ostrov...@oracle.com> >>> Cc: David Vrabel <david.vra...@citrix.com> >>> --- >>> I'm wondering if we should drop page_to_pfn has the macro will likely >>> misuse when Linux is using 64KB page granularity. >> >> I think we want xen_gfn_to_page() and xen_page_to_gfn() and Xen >> front/back drivers never deal with PFNs only GFNs. > > What is xen_gfn_to_page and xen_page_to_gfn? Neither Linux, nor my > series have them.
I suggesting that you introduce these. 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/
