Re: [Xen-devel] [PATCH v8 0/13] introduce GNTTABOP_cache_flush

2014-11-11 Thread Stefano Stabellini
On Mon, 10 Nov 2014, Catalin Marinas wrote: > On Mon, Nov 10, 2014 at 04:12:40PM +, Stefano Stabellini wrote: > > this patch series introduces support for GNTTABOP_cache_flush to perform > > cache maintenance operation on foreign pages and reverts the current > > code based on XENFEAT_grant_map

Re: [Xen-devel] [PATCH v8 0/13] introduce GNTTABOP_cache_flush

2014-11-10 Thread Catalin Marinas
On Mon, Nov 10, 2014 at 04:12:40PM +, Stefano Stabellini wrote: > this patch series introduces support for GNTTABOP_cache_flush to perform > cache maintenance operation on foreign pages and reverts the current > code based on XENFEAT_grant_map_identity. > > It also provides a very slow fallbac

[Xen-devel] [PATCH v8 0/13] introduce GNTTABOP_cache_flush

2014-11-10 Thread Stefano Stabellini
Hi all, this patch series introduces support for GNTTABOP_cache_flush to perform cache maintenance operation on foreign pages and reverts the current code based on XENFEAT_grant_map_identity. It also provides a very slow fallback by bouncing on the swiotlb buffer, in case the hypercall is not avai