4.19-stable patches

added patches:
	s390-mm-use-non-quiescing-sske-for-kvm-switch-to-keyed-guest.patch
	usb-gadget-u_ether-fix-regression-in-setting-fixed-mac-address.patch

diff --git a/queue-4.19/s390-mm-use-non-quiescing-sske-for-kvm-switch-to-keyed-guest.patch b/queue-4.19/s390-mm-use-non-quiescing-sske-for-kvm-switch-to-keyed-guest.patch
new file mode 100644 (file)
index 0000000..da07103
--- /dev/null
+++ b/queue-4.19/s390-mm-use-non-quiescing-sske-for-kvm-switch-to-keyed-guest.patch
@@ -0,0 +1,35 @@
+From 3ae11dbcfac906a8c3a480e98660a823130dc16a Mon Sep 17 00:00:00 2001
+From: Christian Borntraeger <borntraeger@linux.ibm.com>
+Date: Mon, 30 May 2022 11:27:06 +0200
+Subject: s390/mm: use non-quiescing sske for KVM switch to keyed guest
+
+From: Christian Borntraeger <borntraeger@linux.ibm.com>
+
+commit 3ae11dbcfac906a8c3a480e98660a823130dc16a upstream.
+
+The switch to a keyed guest does not require a classic sske as the other
+guest CPUs are not accessing the key before the switch is complete.
+By using the NQ SSKE things are faster especially with multiple guests.
+
+Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
+Suggested-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
+Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
+Link: https://lore.kernel.org/r/20220530092706.11637-3-borntraeger@linux.ibm.com
+Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
+Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/s390/mm/pgtable.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/s390/mm/pgtable.c
++++ b/arch/s390/mm/pgtable.c
+@@ -716,7 +716,7 @@ void ptep_zap_key(struct mm_struct *mm,
+       pgste_val(pgste) |= PGSTE_GR_BIT | PGSTE_GC_BIT;
+       ptev = pte_val(*ptep);
+       if (!(ptev & _PAGE_INVALID) && (ptev & _PAGE_WRITE))
+-              page_set_storage_key(ptev & PAGE_MASK, PAGE_DEFAULT_KEY, 1);
++              page_set_storage_key(ptev & PAGE_MASK, PAGE_DEFAULT_KEY, 0);
+       pgste_set_unlock(ptep, pgste);
+       preempt_enable();
+ }

diff --git a/queue-4.19/series b/queue-4.19/series
index 75f0aecb69fce49777a6766656c1005c2cc966a3..4567050268f142ac08e7fcea79b8b0e979d38763 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -223,3 +223,5 @@ net-openvswitch-fix-misuse-of-the-cached-connection-on-tuple-changes.patch
 net-openvswitch-fix-leak-of-nested-actions.patch
 risc-v-fix-barrier-use-in-vdso-processor.h.patch
 powerpc-mm-switch-obsolete-dssall-to-.long.patch
+s390-mm-use-non-quiescing-sske-for-kvm-switch-to-keyed-guest.patch
+usb-gadget-u_ether-fix-regression-in-setting-fixed-mac-address.patch

diff --git a/queue-4.19/usb-gadget-u_ether-fix-regression-in-setting-fixed-mac-address.patch b/queue-4.19/usb-gadget-u_ether-fix-regression-in-setting-fixed-mac-address.patch
new file mode 100644 (file)
index 0000000..f027828
--- /dev/null
+++ b/queue-4.19/usb-gadget-u_ether-fix-regression-in-setting-fixed-mac-address.patch
@@ -0,0 +1,79 @@
+From b337af3a4d6147000b7ca6b3438bf5c820849b37 Mon Sep 17 00:00:00 2001
+From: Marian Postevca <posteuca@mutex.one>
+Date: Fri, 3 Jun 2022 18:34:59 +0300
+Subject: usb: gadget: u_ether: fix regression in setting fixed MAC address
+
+From: Marian Postevca <posteuca@mutex.one>
+
+commit b337af3a4d6147000b7ca6b3438bf5c820849b37 upstream.
+
+In systemd systems setting a fixed MAC address through
+the "dev_addr" module argument fails systematically.
+When checking the MAC address after the interface is created
+it always has the same but different MAC address to the one
+supplied as argument.
+
+This is partially caused by systemd which by default will
+set an internally generated permanent MAC address for interfaces
+that are marked as having a randomly generated address.
+
+Commit 890d5b40908bfd1a ("usb: gadget: u_ether: fix race in
+setting MAC address in setup phase") didn't take into account
+the fact that the interface must be marked as having a set
+MAC address when it's set as module argument.
+
+Fixed by marking the interface with NET_ADDR_SET when
+the "dev_addr" module argument is supplied.
+
+Fixes: 890d5b40908bfd1a ("usb: gadget: u_ether: fix race in setting MAC address in setup phase")
+Cc: stable@vger.kernel.org
+Signed-off-by: Marian Postevca <posteuca@mutex.one>
+Link: https://lore.kernel.org/r/20220603153459.32722-1-posteuca@mutex.one
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/usb/gadget/function/u_ether.c |   11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+--- a/drivers/usb/gadget/function/u_ether.c
++++ b/drivers/usb/gadget/function/u_ether.c
+@@ -772,9 +772,13 @@ struct eth_dev *gether_setup_name(struct
+       dev->qmult = qmult;
+       snprintf(net->name, sizeof(net->name), "%s%%d", netname);
+ 
+-      if (get_ether_addr(dev_addr, net->dev_addr))
++      if (get_ether_addr(dev_addr, net->dev_addr)) {
++              net->addr_assign_type = NET_ADDR_RANDOM;
+               dev_warn(&g->dev,
+                       "using random %s ethernet address\n", "self");
++      } else {
++              net->addr_assign_type = NET_ADDR_SET;
++      }
+       if (get_ether_addr(host_addr, dev->host_mac))
+               dev_warn(&g->dev,
+                       "using random %s ethernet address\n", "host");
+@@ -831,6 +835,9 @@ struct net_device *gether_setup_name_def
+       INIT_LIST_HEAD(&dev->tx_reqs);
+       INIT_LIST_HEAD(&dev->rx_reqs);
+ 
++      /* by default we always have a random MAC address */
++      net->addr_assign_type = NET_ADDR_RANDOM;
++
+       skb_queue_head_init(&dev->rx_frames);
+ 
+       /* network device setup */
+@@ -868,7 +875,6 @@ int gether_register_netdev(struct net_de
+       g = dev->gadget;
+ 
+       memcpy(net->dev_addr, dev->dev_mac, ETH_ALEN);
+-      net->addr_assign_type = NET_ADDR_RANDOM;
+ 
+       status = register_netdev(net);
+       if (status < 0) {
+@@ -908,6 +914,7 @@ int gether_set_dev_addr(struct net_devic
+       if (get_ether_addr(dev_addr, new_addr))
+               return -EINVAL;
+       memcpy(dev->dev_mac, new_addr, ETH_ALEN);
++      net->addr_assign_type = NET_ADDR_SET;
+       return 0;
+ }
+ EXPORT_SYMBOL_GPL(gether_set_dev_addr);