1 files changed, 0 insertions, 73 deletions
diff --git a/main/xen/xsa38.patch b/main/xen/xsa38.patch
deleted file mode 100644
index f4a5dc0881..0000000000
--- a/main/xen/xsa38.patch
+++ /dev/null
@@ -1,73 +0,0 @@
-diff --git a/tools/ocaml/libs/xb/partial.ml b/tools/ocaml/libs/xb/partial.ml
-index 3558889..d4d1c7b 100644
---- a/tools/ocaml/libs/xb/partial.ml
-+++ b/tools/ocaml/libs/xb/partial.ml
-@@ -27,8 +27,15 @@ external header_size: unit -> int = "stub_header_size"
- external header_of_string_internal: string -> int * int * int * int
-          = "stub_header_of_string"
- 
-+let xenstore_payload_max = 4096 (* xen/include/public/io/xs_wire.h *)
-+
- let of_string s =
- 	let tid, rid, opint, dlen = header_of_string_internal s in
-+	(* A packet which is bigger than xenstore_payload_max is illegal.
-+	   This will leave the guest connection is a bad state and will
-+	   be hard to recover from without restarting the connection
-+	   (ie rebooting the guest) *)
-+	let dlen = min xenstore_payload_max dlen in
- 	{
- 		tid = tid;
- 		rid = rid;
-@@ -38,6 +45,7 @@ let of_string s =
- 	}
- 
- let append pkt s sz =
-+	if pkt.len > 4096 then failwith "Buffer.add: cannot grow buffer";
- 	Buffer.add_string pkt.buf (String.sub s 0 sz)
- 
- let to_complete pkt =
-diff --git a/tools/ocaml/libs/xb/xs_ring_stubs.c b/tools/ocaml/libs/xb/xs_ring_stubs.c
-index 00414c5..4888ac5 100644
---- a/tools/ocaml/libs/xb/xs_ring_stubs.c
-+++ b/tools/ocaml/libs/xb/xs_ring_stubs.c
-@@ -39,21 +39,23 @@ static int xs_ring_read(struct mmap_interface *interface,
-                              char *buffer, int len)
- {
- 	struct xenstore_domain_interface *intf = interface->addr;
--	XENSTORE_RING_IDX cons, prod;
-+	XENSTORE_RING_IDX cons, prod; /* offsets only */
- 	int to_read;
- 
--	cons = intf->req_cons;
--	prod = intf->req_prod;
-+	cons = *(volatile uint32*)&intf->req_cons;
-+	prod = *(volatile uint32*)&intf->req_prod;
- 	xen_mb();
-+	cons = MASK_XENSTORE_IDX(cons);
-+	prod = MASK_XENSTORE_IDX(prod);
- 	if (prod == cons)
- 		return 0;
--	if (MASK_XENSTORE_IDX(prod) > MASK_XENSTORE_IDX(cons)) 
-+	if (prod > cons)
- 		to_read = prod - cons;
- 	else
--		to_read = XENSTORE_RING_SIZE - MASK_XENSTORE_IDX(cons);
-+		to_read = XENSTORE_RING_SIZE - cons;
- 	if (to_read < len)
- 		len = to_read;
--	memcpy(buffer, intf->req + MASK_XENSTORE_IDX(cons), len);
-+	memcpy(buffer, intf->req + cons, len);
- 	xen_mb();
- 	intf->req_cons += len;
- 	return len;
-@@ -66,8 +68,8 @@ static int xs_ring_write(struct mmap_interface *interface,
- 	XENSTORE_RING_IDX cons, prod;
- 	int can_write;
- 
--	cons = intf->rsp_cons;
--	prod = intf->rsp_prod;
-+	cons = *(volatile uint32*)&intf->rsp_cons;
-+	prod = *(volatile uint32*)&intf->rsp_prod;
- 	xen_mb();
- 	if ( (prod - cons) >= XENSTORE_RING_SIZE )
- 		return 0;