From 5ba3d7564593c55292056ef5af84d50b55ebcf0e Mon Sep 17 00:00:00 2001 From: Igor Druzhinin Date: Mon, 10 Jul 2017 23:40:02 +0100 Subject: xen/mapcache: introduce xen_replace_cache_entry() This new call is trying to update a requested map cache entry according to the changes in the physmap. The call is searching for the entry, unmaps it and maps again at the same place using a new guest address. If the mapping is dummy this call will make it real. This function makes use of a new xenforeignmemory_map2() call with an extended interface that was recently introduced in libxenforeignmemory [1]. [1] https://www.mail-archive.com/xen-devel@lists.xen.org/msg113007.html Signed-off-by: Igor Druzhinin Reviewed-by: Paul Durrant Reviewed-by: Stefano Stabellini Signed-off-by: Stefano Stabellini --- include/hw/xen/xen_common.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/hw/xen') diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h index e00ddd7b5b..e28ed4846a 100644 --- a/include/hw/xen/xen_common.h +++ b/include/hw/xen/xen_common.h @@ -78,6 +78,20 @@ static inline void *xenforeignmemory_map(xc_interface *h, uint32_t dom, extern xenforeignmemory_handle *xen_fmem; +#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 41000 + +static inline void *xenforeignmemory_map2(xenforeignmemory_handle *h, + uint32_t dom, void *addr, + int prot, int flags, size_t pages, + const xen_pfn_t arr[/*pages*/], + int err[/*pages*/]) +{ + assert(addr == NULL && flags == 0); + return xenforeignmemory_map(h, dom, prot, pages, arr, err); +} + +#endif + #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 40900 typedef xc_interface xendevicemodel_handle; -- cgit v1.2.3