> -----Original Message----- > From: Andrew Cooper <[email protected]> > Sent: 28 January 2021 12:02 > To: Xen-devel <[email protected]> > Cc: Andrew Cooper <[email protected]>; Wei Liu <[email protected]>; Paul > Durrant <[email protected]>; > Roger Pau Monné <[email protected]>; Juergen Gross <[email protected]>; Ian > Jackson > <[email protected]>; Michał Leszczyński <[email protected]>; > Hubert Jasudowicz > <[email protected]>; Tamas K Lengyel <[email protected]>; Manuel > Bouyer <[email protected]> > Subject: [PATCH v4] tools/foreignmem: Support querying the size of a resource > > With the Xen side of this interface (soon to be) fixed to return real sizes, > userspace needs to be able to make the query. > > Introduce xenforeignmemory_resource_size() for the purpose, bumping the > library minor version. > > Update both all osdep_xenforeignmemory_map_resource() implementations to > understand size requests, skip the mmap() operation, and copy back the > nr_frames field. > > For NetBSD, also fix up the ioctl() error path to issue an unmap(), which was > overlooked by c/s 4a64e2bb39 "libs/foreignmemory: Implement on NetBSD". > > Signed-off-by: Andrew Cooper <[email protected]> > Reviewed-by: Roger Pau Monné <[email protected]>
Reviewed-by: Paul Durrant <[email protected]>
