[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [V1 PATCH 4/5] PVH xen tools: xenstored changes
Allow map_interface in xenstored to revert to the old xc_map_foreign_range if xc_gnttab_map_grant_ref is unable to map the mfn because the guest is auto translate. Signed-off-by: Mukesh Rathor <mukesh.rathor@xxxxxxxxxx> --- tools/xenstore/xenstored_domain.c | 12 +++++++----- 1 files changed, 7 insertions(+), 5 deletions(-) diff --git a/tools/xenstore/xenstored_domain.c b/tools/xenstore/xenstored_domain.c index bf83d58..10c23a1 100644 --- a/tools/xenstore/xenstored_domain.c +++ b/tools/xenstore/xenstored_domain.c @@ -168,13 +168,15 @@ static int readchn(struct connection *conn, void *data, unsigned int len) static void *map_interface(domid_t domid, unsigned long mfn) { if (*xcg_handle != NULL) { - /* this is the preferred method */ - return xc_gnttab_map_grant_ref(*xcg_handle, domid, + void *addr; + /* this is the preferred method */ + addr = xc_gnttab_map_grant_ref(*xcg_handle, domid, GNTTAB_RESERVED_XENSTORE, PROT_READ|PROT_WRITE); - } else { - return xc_map_foreign_range(*xc_handle, domid, - getpagesize(), PROT_READ|PROT_WRITE, mfn); + if (addr) + return addr; } + return xc_map_foreign_range(*xc_handle, domid, + getpagesize(), PROT_READ|PROT_WRITE, mfn); } static void unmap_interface(void *interface) -- 1.7.2.3 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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