remove unused patches

patches.xen/2a22ee6c3ab1-xen-xenbus_dev_frontend-Fix-XS_TRANSACTION_END-handl.patch

@@ -1,49 +0,0 @@
-From 2a22ee6c3ab1d761bc9c04f1e4117edd55b82f09 Mon Sep 17 00:00:00 2001
-From: Simon Gaiser <simon@invisiblethingslab.com>
-Date: Thu, 15 Mar 2018 03:43:20 +0100
-Subject: [PATCH 1/3] xen: xenbus_dev_frontend: Fix XS_TRANSACTION_END handling
-
-Commit fd8aa9095a95 ("xen: optimize xenbus driver for multiple
-concurrent xenstore accesses") made a subtle change to the semantic of
-xenbus_dev_request_and_reply() and xenbus_transaction_end().
-
-Before on an error response to XS_TRANSACTION_END
-xenbus_dev_request_and_reply() would not decrement the active
-transaction counter. But xenbus_transaction_end() has always counted the
-transaction as finished regardless of the response.
-
-The new behavior is that xenbus_dev_request_and_reply() and
-xenbus_transaction_end() will always count the transaction as finished
-regardless the response code (handled in xs_request_exit()).
-
-But xenbus_dev_frontend tries to end a transaction on closing of the
-device if the XS_TRANSACTION_END failed before. Trying to close the
-transaction twice corrupts the reference count. So fix this by also
-considering a transaction closed if we have sent XS_TRANSACTION_END once
-regardless of the return code.
-
-Cc: <stable@vger.kernel.org> # 4.11
-Fixes: fd8aa9095a95 ("xen: optimize xenbus driver for multiple concurrent xenstore accesses")
-Signed-off-by: Simon Gaiser <simon@invisiblethingslab.com>
-Reviewed-by: Juergen Gross <jgross@suse.com>
-Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
----
- drivers/xen/xenbus/xenbus_dev_frontend.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
-index a493e99bed21..81a84b3c1c50 100644
---- a/drivers/xen/xenbus/xenbus_dev_frontend.c
-+++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
-@@ -365,7 +365,7 @@ void xenbus_dev_queue_reply(struct xb_req_data *req)
- 			if (WARN_ON(rc))
- 				goto out;
- 		}
--	} else if (req->msg.type == XS_TRANSACTION_END) {
-+	} else if (req->type == XS_TRANSACTION_END) {
- 		trans = xenbus_get_transaction(u, req->msg.tx_id);
- 		if (WARN_ON(!trans))
- 			goto out;
--- 
-2.16.2
-

patches.xen/8fe5ab411209-xen-xenbus_dev_frontend-Verify-body-of-XS_TRANSACTIO.patch

@@ -1,55 +0,0 @@
-From 8fe5ab411209ac6e2c7021131e622fd004506d1a Mon Sep 17 00:00:00 2001
-From: Simon Gaiser <simon@invisiblethingslab.com>
-Date: Thu, 15 Mar 2018 03:43:22 +0100
-Subject: [PATCH 3/3] xen: xenbus_dev_frontend: Verify body of
- XS_TRANSACTION_END
-
-By guaranteeing that the argument of XS_TRANSACTION_END is valid we can
-assume that the transaction has been closed when we get an XS_ERROR
-response from xenstore (Note that we already verify that it's a valid
-transaction id).
-
-Signed-off-by: Simon Gaiser <simon@invisiblethingslab.com>
-Reviewed-by: Juergen Gross <jgross@suse.com>
-Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
----
- drivers/xen/xenbus/xenbus_dev_frontend.c | 14 +++++++++++---
- 1 file changed, 11 insertions(+), 3 deletions(-)
-
-diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c
-index 81a84b3c1c50..0d6d9264d6a9 100644
---- a/drivers/xen/xenbus/xenbus_dev_frontend.c
-+++ b/drivers/xen/xenbus/xenbus_dev_frontend.c
-@@ -429,6 +429,10 @@ static int xenbus_write_transaction(unsigned msg_type,
- {
- 	int rc;
- 	struct xenbus_transaction_holder *trans = NULL;
-+	struct {
-+		struct xsd_sockmsg hdr;
-+		char body[];
-+	} *msg = (void *)u->u.buffer;
- 
- 	if (msg_type == XS_TRANSACTION_START) {
- 		trans = kzalloc(sizeof(*trans), GFP_KERNEL);
-@@ -437,11 +441,15 @@ static int xenbus_write_transaction(unsigned msg_type,
- 			goto out;
- 		}
- 		list_add(&trans->list, &u->transactions);
--	} else if (u->u.msg.tx_id != 0 &&
--		   !xenbus_get_transaction(u, u->u.msg.tx_id))
-+	} else if (msg->hdr.tx_id != 0 &&
-+		   !xenbus_get_transaction(u, msg->hdr.tx_id))
- 		return xenbus_command_reply(u, XS_ERROR, "ENOENT");
-+	else if (msg_type == XS_TRANSACTION_END &&
-+		 !(msg->hdr.len == 2 &&
-+		   (!strcmp(msg->body, "T") || !strcmp(msg->body, "F"))))
-+		return xenbus_command_reply(u, XS_ERROR, "EINVAL");
- 
--	rc = xenbus_dev_request_and_reply(&u->u.msg, u);
-+	rc = xenbus_dev_request_and_reply(&msg->hdr, u);
- 	if (rc && trans) {
- 		list_del(&trans->list);
- 		kfree(trans);
--- 
-2.16.2
-

patches.xen/b93008d1ac65-xen-xenbus-Catch-closing-of-non-existent-transaction.patch

@@ -1,35 +0,0 @@
-From b93008d1ac657dc67819330c5995e65e7c3e7978 Mon Sep 17 00:00:00 2001
-From: Simon Gaiser <simon@invisiblethingslab.com>
-Date: Thu, 15 Mar 2018 03:43:21 +0100
-Subject: [PATCH 2/3] xen: xenbus: Catch closing of non existent transactions
-
-Users of the xenbus functions should never close a non existent
-transaction (for example by trying to closing the same transaction
-twice) but better catch it in xs_request_exit() than to corrupt the
-reference counter.
-
-Signed-off-by: Simon Gaiser <simon@invisiblethingslab.com>
-Reviewed-by: Juergen Gross <jgross@suse.com>
-Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
----
- drivers/xen/xenbus/xenbus_xs.c | 4 +++-
- 1 file changed, 3 insertions(+), 1 deletion(-)
-
-diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c
-index 3f3b29398ab8..49a3874ae6bb 100644
---- a/drivers/xen/xenbus/xenbus_xs.c
-+++ b/drivers/xen/xenbus/xenbus_xs.c
-@@ -140,7 +140,9 @@ void xs_request_exit(struct xb_req_data *req)
- 	spin_lock(&xs_state_lock);
- 	xs_state_users--;
- 	if ((req->type == XS_TRANSACTION_START && req->msg.type == XS_ERROR) ||
--	    req->type == XS_TRANSACTION_END)
-+	    (req->type == XS_TRANSACTION_END &&
-+	     !WARN_ON_ONCE(req->msg.type == XS_ERROR &&
-+			   !strcmp(req->body, "ENOENT"))))
- 		xs_state_users--;
- 	spin_unlock(&xs_state_lock);
- 
--- 
-2.16.2
-