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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2017-09-069-329/+356
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: 1) Support ipv6 checksum offload in sunvnet driver, from Shannon Nelson. 2) Move to RB-tree instead of custom AVL code in inetpeer, from Eric Dumazet. 3) Allow generic XDP to work on virtual devices, from John Fastabend. 4) Add bpf device maps and XDP_REDIRECT, which can be used to build arbitrary switching frameworks using XDP. From John Fastabend. 5) Remove UFO offloads from the tree, gave us little other than bugs. 6) Remove the IPSEC flow cache, from Florian Westphal. 7) Support ipv6 route offload in mlxsw driver. 8) Support VF representors in bnxt_en, from Sathya Perla. 9) Add support for forward error correction modes to ethtool, from Vidya Sagar Ravipati. 10) Add time filter for packet scheduler action dumping, from Jamal Hadi Salim. 11) Extend the zerocopy sendmsg() used by virtio and tap to regular sockets via MSG_ZEROCOPY. From Willem de Bruijn. 12) Significantly rework value tracking in the BPF verifier, from Edward Cree. 13) Add new jump instructions to eBPF, from Daniel Borkmann. 14) Rework rtnetlink plumbing so that operations can be run without taking the RTNL semaphore. From Florian Westphal. 15) Support XDP in tap driver, from Jason Wang. 16) Add 32-bit eBPF JIT for ARM, from Shubham Bansal. 17) Add Huawei hinic ethernet driver. 18) Allow to report MD5 keys in TCP inet_diag dumps, from Ivan Delalande. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1780 commits) i40e: point wb_desc at the nvm_wb_desc during i40e_read_nvm_aq i40e: avoid NVM acquire deadlock during NVM update drivers: net: xgene: Remove return statement from void function drivers: net: xgene: Configure tx/rx delay for ACPI drivers: net: xgene: Read tx/rx delay for ACPI rocker: fix kcalloc parameter order rds: Fix non-atomic operation on shared flag variable net: sched: don't use GFP_KERNEL under spin lock vhost_net: correctly check tx avail during rx busy polling net: mdio-mux: add mdio_mux parameter to mdio_mux_init() rxrpc: Make service connection lookup always check for retry net: stmmac: Delete dead code for MDIO registration gianfar: Fix Tx flow control deactivation cxgb4: Ignore MPS_TX_INT_CAUSE[Bubble] for T6 cxgb4: Fix pause frame count in t4_get_port_stats cxgb4: fix memory leak tun: rename generic_xdp to skb_xdp tun: reserve extra headroom only when XDP is set net: dsa: bcm_sf2: Configure IMP port TC2QOS mapping net: dsa: bcm_sf2: Advertise number of egress queues ...
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2017-09-021-1/+1
| |\ | | | | | | | | | | | | | | | Three cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: use skb_cow_head() for L2 OSA xmitJulian Wiedmann2017-08-183-22/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Taking a full copy via skb_realloc_headroom() on every xmit is overkill and wastes CPU time; all we actually need is to push on the qeth_hdr. So rework the L2 OSA TX path to avoid the copy. Minor complications arise because struct qeth_hdr must not cross a page boundary. So add a new helper qeth_push_hdr() that catches this, and falls back to the hdr cache that we already use for IQDs. This change uncovered that qeth's TX completion takes rather long. Now that we no longer free the original skb straight away and thus call skb->destructor later than before, throughput regresses significantly. For now, restore old behaviour by adding an explicit skb_orphan(), and a big TODO to improve the TX completion time. Tested-by: Nils Hoppmann <niho@de.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: unify code to build header elementsJulian Wiedmann2017-08-181-14/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After plenty of refactoring, use hd_len as single indication that the skb needs a dedicated header element. This preserves existing behaviour for TSO, as 'hdr' always points to skb->data. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: pass full IQD header length to fill_buffer()Julian Wiedmann2017-08-183-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a prerequisite for unifying the code to build header elements. The TSO header has a different size, so we can no longer rely on implicitly adding the size of a normal qeth_hdr. No functional change. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: pass TSO data offset to fill_buffer()Julian Wiedmann2017-08-184-10/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For TSO we need to skip the skb's qeth/IP/TCP headers when mapping it into buffer elements. Instead of (mis)using skb_pull(), pass a corresponding offset to fill_buffer() like we already do for IQDs. No actual change in the resulting TSO buffers. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: pass TSO header length to fill_buffer()Julian Wiedmann2017-08-184-21/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TSO code already calculates the length of its header element, no need to duplicate this in the low-level code again. Use this opportunity to make hd_len unsigned, and for TSO match its calculation to what tso_fill_header() does. No functional change. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: pass full data length to l2_fill_header()Julian Wiedmann2017-08-181-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For IQD we already need to fix up the qeth_hdr's length field, and future changes will require more flexibility for OSA as well. The device-specific path knows best what header length it requires, so just pass it from there. While at it, remove the unused qeth_card parameter. No functional change. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: split L2 xmit pathsJulian Wiedmann2017-08-181-102/+123
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | l2_hard_start_xmit() actually doesn't contain much shared code, and having device-specific paths makes isolated changes a lot easier. So split it into three routines for IQD, OSN and OSD/OSM/OSX. No functional change. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: fix using of ref counter for rxip addressesKittipon Meesompop2017-08-151-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IP-address setting and removal are delayed when the device is not yet in state SOFTSETUP or UP. ref_counter has been implemented only for ip-address with type normal. In this patch ref_counter logic is also used for ip-address with type rxip to allow appropriate handling of multiple postponed rxip add and del calls. Signed-off-by: Kittipon Meesompop <kmeesomp@linux.vnet.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: fix trace-messages for deleting rxip addressesKittipon Meesompop2017-08-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | change trace-messages: - from addrxip4 to delrxip4 - from addrxip6 to delrxip6 Signed-off-by: Kittipon Meesompop <kmeesomp@linux.vnet.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: reject multicast rxip addressesKittipon Meesompop2017-08-151-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There exist different commands to add unicast and multicast addresses on the OSA card. rxip addresses are always set as unicast addresses and thus just unicast addresses should be allowed. Adding a multicast address now fails and a grace message is generated. Signed-off-by: Kittipon Meesompop <kmeesomp@linux.vnet.ibm.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: extract bridgeport cmd builderJulian Wiedmann2017-08-151-36/+26
| | | | | | | | | | | | | | | | | | | | | Consolidation of duplicated code, no functional change. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/net: reduce inliningJulian Wiedmann2017-08-157-74/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up the inline cruft in s390 net drivers. Many of the inlined functions had only one caller anyway. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: make more use of skb APIJulian Wiedmann2017-08-154-18/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace some open-coded parts with their proper API calls. Also remove two skb_[re]set_mac_header() calls in the L2 xmit paths that are clearly no longer required, since at least commit 6d1ccff62780 ("net: reset mac header in dev_start_xmit()"). Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: clean up fill_buffer() offset logicJulian Wiedmann2017-08-152-19/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For some xmit paths we pass down a data offset to qeth_fill_buffer(), to indicate that the first k bytes of the skb should be skipped when mapping it into buffer elements. Commit acd9776b5c45 ("s390/qeth: no ETH header for outbound AF_IUCV") recently switched the offset for the IUCV-over-HiperSockets path from 0 to ETH_HLEN, and now we have device offset OSA = 0 IQD > 0 for all xmit paths. OSA would previously pass down -1 from do_send_packet(), to distinguish between 1) OSA and 2) IQD with offset 0. That's no longer needed now, so have it pass 0, make the offset unsigned and clean up how we apply the offset in __qeth_fill_buffer(). No change of behaviour for any of our current xmit paths. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: straighten out fill_buffer() interfaceJulian Wiedmann2017-08-151-15/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. for adjusting the buffer's next_element_to_fill in __fill_buffer(), just pass the full qeth_qdio_out_buffer struct 2. when adding a header element, be consistent about passing a hint ('is_first_elem') to __fill_buffer() No functional change. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: simplify fragment type selectionJulian Wiedmann2017-08-151-15/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | Improve readability of the code that determines a buffer element's fragment type, and reduce the number of cases down from 5 to 3. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: remove extra L3 adapterparms queryJulian Wiedmann2017-08-151-13/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qeth_l3_setadapter_parms() queries the device for supported adapterparms, even though they already have been queried as part of the device's high-level setup. Remove that extra call. The only call chain for qeth_l3_setadapter_parms() is __qeth_l3_set_online() qeth_core_hardsetup_card() qeth_query_setadapterparms() qeth_l3_setadapter_parms() qeth_query_setadapterparms() , and we only reach qeth_l3_setadapter_parms() if the first adapterparms query succeeds. Hence removing the second query results in no loss of functionality. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: remove extra L2 adapterparms queryJulian Wiedmann2017-08-151-9/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qeth_l2_request_initial_mac() queries the device for its supported adapterparms, even though they already have been queried as part of the device's high-level setup. Remove that extra call. The only call chain for qeth_l2_request_initial_mac() is __qeth_l2_set_online() qeth_core_hardsetup_card() qeth_query_setadapterparms() qeth_l2_setup_netdev() qeth_l2_request_initial_mac() qeth_query_setadapterparms() , and we only reach qeth_l2_request_initial_mac() if the first adapterparms query succeeds. Hence removing the second query results in no loss of functionality. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | s390/qeth: don't access skb after transmissionJulian Wiedmann2017-08-152-10/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After transmitting a skb via send_packet[_fast](), the statistics code accesses the skb once more to account for transmitted page frags. This has a (theoretical?) race against the TX completion - if the TX completion is processed and frees the skb before hard_start_xmit() gets to the statistics part, we access random memory. Fix this by caching the # of page frags, before the skb is transmitted. Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com> Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2017-09-0526-102/+398
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Martin Schwidefsky: "The first part of the s390 updates for 4.14: - Add machine type 0x3906 for IBM z14 - Add IBM z14 TLB flushing improvements for KVM guests - Exploit the TOD clock epoch extension to provide a continuous TOD clock afer 2042/09/17 - Add NIAI spinlock hints for IBM z14 - Rework the vmcp driver and use CMA for the respone buffer of z/VM CP commands - Drop some s390 specific asm headers and use the generic version - Add block discard for DASD-FBA devices under z/VM - Add average request times to DASD statistics - A few of those constify patches which seem to be in vogue right now - Cleanup and bug fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (50 commits) s390/mm: avoid empty zero pages for KVM guests to avoid postcopy hangs s390/dasd: Add discard support for FBA devices s390/zcrypt: make CPRBX const s390/uaccess: avoid mvcos jump label s390/mm: use generic mm_hooks s390/facilities: fix typo s390/vmcp: simplify vmcp_response_free() s390/topology: Remove the unused parent_node() macro s390/dasd: Change unsigned long long to unsigned long s390/smp: convert cpuhp_setup_state() return code to zero on success s390: fix 'novx' early parameter handling s390/dasd: add average request times to dasd statistics s390/scm: use common completion path s390/pci: log changes to uid checking s390/vmcp: simplify vmcp_ioctl() s390/vmcp: return -ENOTTY for unknown ioctl commands s390/vmcp: split vmcp header file and move to uapi s390/vmcp: make use of contiguous memory allocator s390/cpcmd,vmcp: avoid GFP_DMA allocations s390/vmcp: fix uaccess check and avoid undefined behavior ...
| * | s390/dasd: Add discard support for FBA devicesJan Höppner2017-08-294-4/+221
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The z/VM hypervisor provides virtual disks (VDISK) which are backed by main memory of the hypervisor. Those devices are seen as DASD FBA disks within the Linux guest. Whenever data is written to such a device, memory is allocated on-the-fly by z/VM accordingly. This memory, however, is not being freed if data on the device is deleted by the guest OS. In order to make memory usable after deletion again, add discard support to the FBA discipline. While at it, update comments regarding the DASD_FEATURE_* flags. Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/zcrypt: make CPRBX constBhumika Goyal2017-08-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Make this const as it is only used in a copy operation. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/vmcp: simplify vmcp_response_free()Heiko Carstens2017-08-291-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | Get rid of the goto and "out" label within vmcp_response_free() which I added. This just makes the code harder to read than necessary. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/dasd: Change unsigned long long to unsigned longJan Höppner2017-08-238-18/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unsigned long long and unsigned long were different in size for 31-bit. For 64-bit the size for both datatypes is 8 Bytes and since the support for 31-bit is long gone we can clean up a little and change everything to unsigned long. Change get_phys_clock() along the way to accept unsigned long as well so that the DASD code can be consistent. Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/dasd: add average request times to dasd statisticsStefan Haberland2017-08-232-4/+34
| | | | | | | | | | | | | | | | | | | | | Add average times to the DASD statistics interface. Signed-off-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/scm: use common completion pathSebastian Ott2017-08-091-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit caf7df122721 ("block: remove the errors field from struct request") rq->errors can't be (mis)used by block device drivers to store the error condition for usage during async completion. Because of that I simply used async completion only for the non-error paths. This patch places the error within the private data of struct request and uses async completion for all paths again. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/vmcp: simplify vmcp_ioctl()Heiko Carstens2017-08-091-14/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | vmcp_ioctl() has many different return statements and duplicates a lot of mutex_unlock() calls. Simplify this so that only one return statement and one mutex_unlock() call is left. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/vmcp: return -ENOTTY for unknown ioctl commandsHeiko Carstens2017-08-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Return -ENOTTY for unknown ioctl commands instead of -ENOIOCTLCMD. This isn't that much of difference, since common code will translate -ENOIOCTLCMD to -ENOTTY anyway, but this way it seems to be more obvious what is happening (at least to me). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/vmcp: split vmcp header file and move to uapiHeiko Carstens2017-08-092-32/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Split the vmcp header file and move the device driver internal structure to the C file, and move the ioctl definitions to the uapi directory. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/vmcp: make use of contiguous memory allocatorHeiko Carstens2017-08-093-9/+79
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If memory is fragmented it is unlikely that large order memory allocations succeed. This has been an issue with the vmcp device driver since a long time, since it requires large physical contiguous memory ares for large responses. To hopefully resolve this issue make use of the contiguous memory allocator (cma). This patch adds a vmcp specific vmcp cma area with a default size of 4MB. The size can be changed either via the VMCP_CMA_SIZE config option at compile time or with the "vmcp_cma" kernel parameter (e.g. "vmcp_cma=16m"). For any vmcp response buffers larger than 16k memory from the cma area will be allocated. If such an allocation fails, there is a fallback to the buddy allocator. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/cpcmd,vmcp: avoid GFP_DMA allocationsHeiko Carstens2017-08-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to the CP Programming Services manual Diagnose Code 8 "Virtual Console Function" can be used in all addressing modes. Also the input and output buffers do not have a limitation which specifies they need to be below the 2GB line. This is true at least since z/VM 5.4. Therefore remove the sam31/64 instructions and allow for simple GFP_KERNEL allocations. This makes it easier to allocate a 1MB page if the user requested such a large return buffer. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/vmcp: fix uaccess check and avoid undefined behaviorHeiko Carstens2017-08-091-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The vmcp device driver should return -EFAULT if get_user() fails, due to an invalid user space address. In addition the buffer size value from user space is passed unchecked to get_order(). The return value of get_order(0) undefined. Therefore explicitly test for zero before calling get_order() and also return -EFAULT if get_user() fails. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/cio: add const to bin_attribute structuresBhumika Goyal2017-08-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add const to bin_attribute structures as they are only passed to the functions device_{remove/create}_bin_file. The corresponding arguments are of type const, so declare the structures to be const. Cross compiled for s390 architecture. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | s390/sclp: add const to bin_attribute structureBhumika Goyal2017-08-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Declare bin_attribute structure as const as it is only passed as an argument to the function sysfs_create_bin_file. This argument is of type const, so declare the structure as const. Cross compiled for s390 architecture. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | Merge tag 'vfio-ccw-20170724' of ↵Martin Schwidefsky2017-07-261-1/+1
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw into features Pull vfio-ccw fix from Cornelia Huck: "A bugfix in the ccw translation code."
| * | | s390/sclp_ocf: constify attribute_group structures.Arvind Yadav2017-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/tape: constify attribute_group structures.Arvind Yadav2017-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 11511 656 16 12183 2f97 drivers/s390/char/tape_core.o File size After adding 'const': text data bss dec hex filename 11575 592 16 12183 2f97 drivers/s390/char/tape_core.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/raw3270: constify attribute_group structures.Arvind Yadav2017-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 8069 816 16 8901 22c5 drivers/s390/char/raw3270.o File size After adding 'const': text data bss dec hex filename 8133 752 16 8901 22c5 drivers/s390/char/raw3270.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/qeth: constify attribute_group structures.Arvind Yadav2017-07-261-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 6763 1216 0 7979 1f2b drivers/s390/net/qeth_l3_sys.o File size After adding 'const': text data bss dec hex filename 7019 960 0 7971 1f2b drivers/s390/net/qeth_l3_sys.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/cio: constify attribute_group structures.Arvind Yadav2017-07-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/dasd: constify attribute_group structures.Arvind Yadav2017-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/zcrypt_card: constify attribute_group structures.Arvind Yadav2017-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 1019 160 0 1179 49b drivers/s390/crypto/zcrypt_card.o File size After adding 'const': text data bss dec hex filename 1083 96 0 1179 49b drivers/s390/crypto/zcrypt_card.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/zcrypt_queue: constify attribute_group structures.Arvind Yadav2017-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 1361 96 0 1457 5b1 s390/crypto/zcrypt_queue.o File size After adding 'const': text data bss dec hex filename 1425 32 0 1457 5b1 s390/crypto/zcrypt_queue.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | s390/sclp: single increment assignment controlMartin Schwidefsky2017-07-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Set a new option bit of the attach command to speed up memory hotplug. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | Merge branch 'tlb-flushing' into featuresMartin Schwidefsky2017-07-261-2/+4
| |\ \ \ | | | | | | | | | | | | | | | | | | | | Add the TLB flushing changes via a tip branch to ease merging with the KVM tree.
| | * | | s390/mm: add no-dat TLB flush optimizationMartin Schwidefsky2017-07-251-2/+4
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | | | Merge tag 'vfio-ccw-20170724' of ↵Martin Schwidefsky2017-08-311-1/+1
|\ \ \ \ \ | | |_|/ / | |/| | / | |_|_|/ |/| | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/vfio-ccw into fixes Pull vfio-ccw fix from Cornelia Huck: "A bugfix in the ccw translation code."
| * | | vfio: ccw: fix bad ptr math for TIC cda translationJason J. Herne2017-07-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we are translating channel data addresses from guest to host address space for TIC instructions we are getting incorrect addresses because of a pointer arithmetic error. We currently calculate the offset of the TIC's cda from the start of the channel program chain (ccw->cda - ccw_head). We then add that to the address of the ccw chain in host memory (iter->ch_ccw). The problem is that iter->ch_ccw is a pointer to struct ccw1 so when we increment it we are actually incrementing by the size of struct ccw1 which is 8 bytes. The intent was to increment by n-bytes, not n*8. The fix: cast iter->ch_ccw to char* so it will be incremented by n*1. Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170721011436.76112-1-bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>