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2018-12-28mm: convert totalram_pages and totalhigh_pages variables to atomicArun KS1-1/+1
totalram_pages and totalhigh_pages are made static inline function. Main motivation was that managed_page_count_lock handling was complicating things. It was discussed in length here, https://lore.kernel.org/patchwork/patch/995739/#1181785 So it seemes better to remove the lock and convert variables to atomic, with preventing poteintial store-to-read tearing as a bonus. [[email protected]: coding style fixes] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arun KS <[email protected]> Suggested-by: Michal Hocko <[email protected]> Suggested-by: Vlastimil Babka <[email protected]> Reviewed-by: Konstantin Khlebnikov <[email protected]> Reviewed-by: Pavel Tatashin <[email protected]> Acked-by: Michal Hocko <[email protected]> Acked-by: Vlastimil Babka <[email protected]> Cc: David Hildenbrand <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-12-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds1-0/+13
Pull networking updates from David Miller: 1) New ipset extensions for matching on destination MAC addresses, from Stefano Brivio. 2) Add ipv4 ttl and tos, plus ipv6 flow label and hop limit offloads to nfp driver. From Stefano Brivio. 3) Implement GRO for plain UDP sockets, from Paolo Abeni. 4) Lots of work from Michał Mirosław to eliminate the VLAN_TAG_PRESENT bit so that we could support the entire vlan_tci value. 5) Rework the IPSEC policy lookups to better optimize more usecases, from Florian Westphal. 6) Infrastructure changes eliminating direct manipulation of SKB lists wherever possible, and to always use the appropriate SKB list helpers. This work is still ongoing... 7) Lots of PHY driver and state machine improvements and simplifications, from Heiner Kallweit. 8) Various TSO deferral refinements, from Eric Dumazet. 9) Add ntuple filter support to aquantia driver, from Dmitry Bogdanov. 10) Batch dropping of XDP packets in tuntap, from Jason Wang. 11) Lots of cleanups and improvements to the r8169 driver from Heiner Kallweit, including support for ->xmit_more. This driver has been getting some much needed love since he started working on it. 12) Lots of new forwarding selftests from Petr Machata. 13) Enable VXLAN learning in mlxsw driver, from Ido Schimmel. 14) Packed ring support for virtio, from Tiwei Bie. 15) Add new Aquantia AQtion USB driver, from Dmitry Bezrukov. 16) Add XDP support to dpaa2-eth driver, from Ioana Ciocoi Radulescu. 17) Implement coalescing on TCP backlog queue, from Eric Dumazet. 18) Implement carrier change in tun driver, from Nicolas Dichtel. 19) Support msg_zerocopy in UDP, from Willem de Bruijn. 20) Significantly improve garbage collection of neighbor objects when the table has many PERMANENT entries, from David Ahern. 21) Remove egdev usage from nfp and mlx5, and remove the facility completely from the tree as it no longer has any users. From Oz Shlomo and others. 22) Add a NETDEV_PRE_CHANGEADDR so that drivers can veto the change and therefore abort the operation before the commit phase (which is the NETDEV_CHANGEADDR event). From Petr Machata. 23) Add indirect call wrappers to avoid retpoline overhead, and use them in the GRO code paths. From Paolo Abeni. 24) Add support for netlink FDB get operations, from Roopa Prabhu. 25) Support bloom filter in mlxsw driver, from Nir Dotan. 26) Add SKB extension infrastructure. This consolidates the handling of the auxiliary SKB data used by IPSEC and bridge netfilter, and is designed to support the needs to MPTCP which could be integrated in the future. 27) Lots of XDP TX optimizations in mlx5 from Tariq Toukan. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1845 commits) net: dccp: fix kernel crash on module load drivers/net: appletalk/cops: remove redundant if statement and mask bnx2x: Fix NULL pointer dereference in bnx2x_del_all_vlans() on some hw net/net_namespace: Check the return value of register_pernet_subsys() net/netlink_compat: Fix a missing check of nla_parse_nested ieee802154: lowpan_header_create check must check daddr net/mlx4_core: drop useless LIST_HEAD mlxsw: spectrum: drop useless LIST_HEAD net/mlx5e: drop useless LIST_HEAD iptunnel: Set tun_flags in the iptunnel_metadata_reply from src net/mlx5e: fix semicolon.cocci warnings staging: octeon: fix build failure with XFRM enabled net: Revert recent Spectre-v1 patches. can: af_can: Fix Spectre v1 vulnerability packet: validate address length if non-zero nfc: af_nfc: Fix Spectre v1 vulnerability phonet: af_phonet: Fix Spectre v1 vulnerability net: core: Fix Spectre v1 vulnerability net: minor cleanup in skb_ext_add() net: drop the unused helper skb_ext_get() ...
2018-12-27Merge tag 'powerpc-4.21-1' of ↵Linus Torvalds5-27/+17
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Notable changes: - Mitigations for Spectre v2 on some Freescale (NXP) CPUs. - A large series adding support for pass-through of Nvidia V100 GPUs to guests on Power9. - Another large series to enable hardware assistance for TLB table walk on MPC8xx CPUs. - Some preparatory changes to our DMA code, to make way for further cleanups from Christoph. - Several fixes for our Transactional Memory handling discovered by fuzzing the signal return path. - Support for generating our system call table(s) from a text file like other architectures. - A fix to our page fault handler so that instead of generating a WARN_ON_ONCE, user accesses of kernel addresses instead print a ratelimited and appropriately scary warning. - A cosmetic change to make our unhandled page fault messages more similar to other arches and also more compact and informative. - Freescale updates from Scott: "Highlights include elimination of legacy clock bindings use from dts files, an 83xx watchdog handler, fixes to old dts interrupt errors, and some minor cleanup." And many clean-ups, reworks and minor fixes etc. Thanks to: Alexandre Belloni, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Benjamin Herrenschmidt, Breno Leitao, Christian Lamparter, Christophe Leroy, Christoph Hellwig, Daniel Axtens, Darren Stevens, David Gibson, Diana Craciun, Dmitry V. Levin, Firoz Khan, Geert Uytterhoeven, Greg Kurz, Gustavo Romero, Hari Bathini, Joel Stanley, Kees Cook, Madhavan Srinivasan, Mahesh Salgaonkar, Markus Elfring, Mathieu Malaterre, Michal Suchánek, Naveen N. Rao, Nick Desaulniers, Oliver O'Halloran, Paul Mackerras, Ram Pai, Ravi Bangoria, Rob Herring, Russell Currey, Sabyasachi Gupta, Sam Bobroff, Satheesh Rajendran, Scott Wood, Segher Boessenkool, Stephen Rothwell, Tang Yuantian, Thiago Jung Bauermann, Yangtao Li, Yuantian Tang, Yue Haibing" * tag 'powerpc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (201 commits) Revert "powerpc/fsl_pci: simplify fsl_pci_dma_set_mask" powerpc/zImage: Also check for stdout-path powerpc: Fix HMIs on big-endian with CONFIG_RELOCATABLE=y macintosh: Use of_node_name_{eq, prefix} for node name comparisons ide: Use of_node_name_eq for node name comparisons powerpc: Use of_node_name_eq for node name comparisons powerpc/pseries/pmem: Convert to %pOFn instead of device_node.name powerpc/mm: Remove very old comment in hash-4k.h powerpc/pseries: Fix node leak in update_lmb_associativity_index() powerpc/configs/85xx: Enable CONFIG_DEBUG_KERNEL powerpc/dts/fsl: Fix dtc-flagged interrupt errors clk: qoriq: add more compatibles strings powerpc/fsl: Use new clockgen binding powerpc/83xx: handle machine check caused by watchdog timer powerpc/fsl-rio: fix spelling mistake "reserverd" -> "reserved" powerpc/fsl_pci: simplify fsl_pci_dma_set_mask arch/powerpc/fsl_rmu: Use dma_zalloc_coherent vfio_pci: Add NVIDIA GV100GL [Tesla V100 SXM2] subdriver vfio_pci: Allow regions to add own capabilities vfio_pci: Allow mapping extra regions ...
2018-12-21ocxl: Fix endiannes bug in read_afu_name()Greg Kurz1-1/+1
The AFU Descriptor Template in the PCI config space has a Name Space field which is a 24 Byte ASCII character string of descriptive name space for the AFU. The OCXL driver read the string four characters at a time with pci_read_config_dword(). This optimization is valid on a little-endian system since this is PCI, but a big-endian system ends up with each subset of four characters in reverse order. This could be fixed by switching to read characters one by one. Another option is to swap the bytes if we're big-endian. Go for the latter with le32_to_cpu(). Cc: [email protected] # v4.16 Signed-off-by: Greg Kurz <[email protected]> Acked-by: Frederic Barrat <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2018-12-20ocxl/afu_irq: Don't include <asm/pnv-ocxl.h>Greg Kurz1-1/+0
The AFU irq code doesn't need to reach out to the platform. Signed-off-by: Greg Kurz <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2018-12-20ocxl: Clarify error path in setup_xsl_irq()Greg Kurz1-9/+14
Implementing rollback with goto and labels is a common practice that leads to prettier and more maintainable code. FWIW, this design pattern is already being used in alloc_link() a few lines below in this file. Do the same in setup_xsl_irq(). Signed-off-by: Greg Kurz <[email protected]> Acked-by: Frederic Barrat <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2018-12-20cxl: drop the dma_set_mask callback from vphbChristoph Hellwig1-12/+0
The CXL code never even looks at the dma mask, so there is no good reason for this sanity check. Remove it because it gets in the way of the dma ops refactoring. Signed-off-by: Christoph Hellwig <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2018-12-20ocxl: Fix endiannes bug in ocxl_link_update_pe()Greg Kurz1-1/+1
All fields in the PE are big-endian. Use cpu_to_be32() like everywhere else something is written to the PE. Otherwise a wrong TID will be used by the NPU. If this TID happens to point to an existing thread sharing the same mm, it could be woken up by error. This is highly improbable though. The likely outcome of this is the NPU not finding the target thread and forcing the AFU into sending an interrupt, which userspace is supposed to handle anyway. Fixes: e948e06fc63a ("ocxl: Expose the thread_id needed for wait on POWER9") Cc: [email protected] # v4.18 Signed-off-by: Greg Kurz <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2018-12-20Merge branches 'iommu/fixes', 'arm/renesas', 'arm/mediatek', 'arm/tegra', ↵Joerg Roedel2-2/+2
'arm/omap', 'arm/smmu', 'x86/vt-d', 'x86/amd' and 'core' into next
2018-12-20dma-mapping: zero memory returned from dma_alloc_*Christoph Hellwig1-1/+1
If we want to map memory from the DMA allocator to userspace it must be zeroed at allocation time to prevent stale data leaks. We already do this on most common architectures, but some architectures don't do this yet, fix them up, either by passing GFP_ZERO when we use the normal page allocator or doing a manual memset otherwise. Signed-off-by: Christoph Hellwig <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> [m68k] Acked-by: Sam Ravnborg <[email protected]> [sparc]
2018-12-19VMCI: Use memdup_user() rather than duplicating its implementationWen Yang1-14/+4
Reuse existing functionality from memdup_user() instead of keeping duplicate source code. This issue was detected by using the Coccinelle software. Signed-off-by: Wen Yang <[email protected]> CC: Arnd Bergmann <[email protected]> CC: Greg Kroah-Hartman <[email protected]> CC: [email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-12-19misc: mic: fix a DMA pool free failureWenwen Wang2-5/+30
In _scif_prog_signal(), a DMA pool is allocated if the MIC Coprocessor is not X100, i.e., the boolean variable 'x100' is false. This DMA pool will be freed eventually through the callback function scif_prog_signal_cb() with the parameter of 'status', which actually points to the start of DMA pool. Specifically, in scif_prog_signal_cb(), the 'ep' field and the 'src_dma_addr' field of 'status' are used to free the DMA pool by invoking dma_pool_free(). Given that 'status' points to the start address of the DMA pool, both 'status->ep' and 'status->src_dma_addr' are in the DMA pool. And so, the device has the permission to access them. Even worse, a malicious device can modify them. As a result, dma_pool_free() will not succeed. To avoid the above issue, this patch introduces a new data structure, i.e., scif_cb_arg, to store the arguments required by the call back function. A variable 'cb_arg' is allocated in _scif_prog_signal() to pass the arguments. 'cb_arg' will be freed after dma_pool_free() in scif_prog_signal_cb(). Signed-off-by: Wenwen Wang <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-12-19genwqe: Fix size checkChristian Borntraeger1-1/+1
Calling the test program genwqe_cksum with the default buffer size of 2MB triggers the following kernel warning on s390: WARNING: CPU: 30 PID: 9311 at mm/page_alloc.c:3189 __alloc_pages_nodemask+0x45c/0xbe0 CPU: 30 PID: 9311 Comm: genwqe_cksum Kdump: loaded Not tainted 3.10.0-957.el7.s390x #1 task: 00000005e5d13980 ti: 00000005e7c6c000 task.ti: 00000005e7c6c000 Krnl PSW : 0704c00180000000 00000000002780ac (__alloc_pages_nodemask+0x45c/0xbe0) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA:3 Krnl GPRS: 00000000002932b8 0000000000b73d7c 0000000000000010 0000000000000009 0000000000000041 00000005e7c6f9b8 0000000000000001 00000000000080d0 0000000000000000 0000000000b70500 0000000000000001 0000000000000000 0000000000b70528 00000000007682c0 0000000000277df2 00000005e7c6f9a0 Krnl Code: 000000000027809e: de7195001000 ed 1280(114,%r9),0(%r1) 00000000002780a4: a774fead brc 7,277dfe #00000000002780a8: a7f40001 brc 15,2780aa >00000000002780ac: 92011000 mvi 0(%r1),1 00000000002780b0: a7f4fea7 brc 15,277dfe 00000000002780b4: 9101c6b6 tm 1718(%r12),1 00000000002780b8: a784ff3a brc 8,277f2c 00000000002780bc: a7f4fe2e brc 15,277d18 Call Trace: ([<0000000000277df2>] __alloc_pages_nodemask+0x1a2/0xbe0) [<000000000013afae>] s390_dma_alloc+0xfe/0x310 [<000003ff8065f362>] __genwqe_alloc_consistent+0xfa/0x148 [genwqe_card] [<000003ff80658f7a>] genwqe_mmap+0xca/0x248 [genwqe_card] [<00000000002b2712>] mmap_region+0x4e2/0x778 [<00000000002b2c54>] do_mmap+0x2ac/0x3e0 [<0000000000292d7e>] vm_mmap_pgoff+0xd6/0x118 [<00000000002b081c>] SyS_mmap_pgoff+0xdc/0x268 [<00000000002b0a34>] SyS_old_mmap+0x8c/0xb0 [<000000000074e518>] sysc_tracego+0x14/0x1e [<000003ffacf87dc6>] 0x3ffacf87dc6 turns out the check in __genwqe_alloc_consistent uses "> MAX_ORDER" while the mm code uses ">= MAX_ORDER". Fix genwqe. Cc: [email protected] Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Frank Haverkamp <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-12-17misc: alcor_pci: fix spelling mistake "invailid" -> "invalid"Colin Ian King1-2/+2
There are spelling mistakes in a couple of dev_dbg messages, fix these. Signed-off-by: Colin Ian King <[email protected]> Reviewed-by: Oleksij Rempel <[email protected]> Signed-off-by: Ulf Hansson <[email protected]>
2018-12-17misc: rtsx_usb: Use USB remote wakeup signaling for card insertion detectionKai-Heng Feng1-0/+8
Although rtsx_usb doesn't support card removal detection, card insertion will resume rtsx_usb by USB remote wakeup signaling. When rtsx_usb gets resumed, also resumes its child devices, rtsx_usb_sdmmc and rtsx_usb_ms, to notify them there's a card in its slot. Signed-off-by: Kai-Heng Feng <[email protected]> Tested-by: Oleksandr Natalenko <[email protected]> Signed-off-by: Ulf Hansson <[email protected]>
2018-12-17misc: cardreader: add new Alcor Micro Cardreader PCI driverOleksij Rempel4-3/+385
This driver provides support for Alcor Micro AU6601 and AU6621 card readers. This is single LUN HW and it is expected to work with following standards: - Support SDR104 / SDR50 - MultiMedia Card (MMC) - Memory Stick (MS) - Memory Stick PRO (MS_Pro) Since it is a PCIe controller, it should work on any architecture supporting PCIe. For now, it was developed and tested only on x86_64. This driver is a result of RE work and was created without any documentation or real knowledge of HW internals. Signed-off-by: Oleksij Rempel <[email protected]> Signed-off-by: Ulf Hansson <[email protected]>
2018-12-10eeprom: at24: add support for 24c2048Adrian Bunk2-1/+4
Works with ST M24M02. Signed-off-by: Adrian Bunk <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2018-12-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
Several conflicts, seemingly all over the place. I used Stephen Rothwell's sample resolutions for many of these, if not just to double check my own work, so definitely the credit largely goes to him. The NFP conflict consisted of a bug fix (moving operations past the rhashtable operation) while chaning the initial argument in the function call in the moved code. The net/dsa/master.c conflict had to do with a bug fix intermixing of making dsa_master_set_mtu() static with the fixing of the tagging attribute location. cls_flower had a conflict because the dup reject fix from Or overlapped with the addition of port range classifiction. __set_phy_supported()'s conflict was relatively easy to resolve because Andrew fixed it in both trees, so it was just a matter of taking the net-next copy. Or at least I think it was :-) Joe Stringer's fix to the handling of netns id 0 in bpf_sk_lookup() intermixed with changes on how the sdif and caller_net are calculated in these code paths in net-next. The remaining BPF conflicts were largely about the addition of the __bpf_md_ptr stuff in 'net' overlapping with adjustments and additions to the relevant data structure where the MD pointer macros are used. Signed-off-by: David S. Miller <[email protected]>
2018-12-06misc: ti-st: make array read_ver_cmd static, shrinks object sizeColin Ian King1-1/+1
Don't populate the const array read_ver_cmd on the stack but instead make it static. Makes the object code smaller by 42 bytes: Before: text data bss dec hex filename 17262 6928 192 24382 5f3e drivers/misc/ti-st/st_kim.o After: text data bss dec hex filename 17156 6992 192 24340 5f14 drivers/misc/ti-st/st_kim.o (gcc version 8.2.0 x86_64) Signed-off-by: Colin Ian King <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-12-06misc: remove GENWQE_DEBUGFS_RO()Yangtao Li8-268/+73
We already have the DEFINE_SHOW_ATTRIBUTE.There is no need to define such a macro,so remove GENWQE_DEBUGFS_RO.Also use DEFINE_SHOW_ATTRIBUTE to simplify some code. Signed-off-by: Yangtao Li <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-12-06misc: vexpress: Off by one in vexpress_syscfg_exec()Dan Carpenter1-1/+1
The > comparison should be >= to prevent reading beyond the end of the func->template[] array. (The func->template array is allocated in vexpress_syscfg_regmap_init() and it has func->num_templates elements.) Fixes: 974cc7b93441 ("mfd: vexpress: Define the device as MFD cells") Signed-off-by: Dan Carpenter <[email protected]> Acked-by: Sudeep Holla <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-12-03Merge 4.20-rc5 into char-misc-nextGreg Kroah-Hartman1-1/+1
We need the fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-27misc: mic/scif: fix copy-paste error in scif_create_remote_lookupYueHaibing1-1/+1
gcc '-Wunused-but-set-variable' warning: drivers/misc/mic/scif/scif_rma.c: In function 'scif_create_remote_lookup': drivers/misc/mic/scif/scif_rma.c:373:25: warning: variable 'vmalloc_num_pages' set but not used [-Wunused-but-set-variable] 'vmalloc_num_pages' should be used to determine if the address is within the vmalloc range. Fixes: ba612aa8b487 ("misc: mic: SCIF memory registration and unregistration") Signed-off-by: YueHaibing <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-27misc/pvpanic: resolve compile errors for arch=umPeng Hao1-1/+1
Resolve compile error for arch=um pvpanic.c:(.text+0xb6): undefined reference to `devm_ioremap_resource' Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-27altera-stapl: check for a null key before strcasecmp'ing itColin Ian King1-2/+1
Currently the null check on key is occurring after the strcasecmp on the key, hence there is a potential null pointer dereference on key. Fix this by checking if key is null first. Also replace the == 0 check on strcasecmp with just the ! operator. Detected by CoverityScan, CID#1248787 ("Dereference before null check") Fixes: fa766c9be58b ("[media] Altera FPGA firmware download module") Signed-off-by: Colin Ian King <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-27misc: cxl: Use device_type helpers to access the node typeRob Herring1-3/+1
Remove directly accessing device_node.type pointer and use the accessors instead. This will eventually allow removing the type pointer. Cc: Frederic Barrat <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: [email protected] Signed-off-by: Rob Herring <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-27misc/pvpanic: fix a NULL vs IS_ERR() checkDan Carpenter1-2/+2
The devm_ioremap_resource() function doesn't return NULL, it returns error pointers. Fixes: 46f934c9a12f ("misc/pvpanic: add support to get pvpanic device info FDT") Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-26virtio_ring: disable packed ring on unsupported transportsTiwei Bie1-0/+13
Currently, ccw, vop and remoteproc need some legacy virtio APIs to create or access virtio rings, which are not supported by packed ring. So disable packed ring on these transports for now. Signed-off-by: Tiwei Bie <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-11-26mei: me: mark CNP devices as having dma supportAlexander Usyskin1-2/+2
Signed-off-by: Alexander Usyskin <[email protected]> Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-26mei: bump hbm version to 2.1Alexander Usyskin1-1/+1
Bump HBM version to 2.1 to indicate DMA transfer support. Signed-off-by: Alexander Usyskin <[email protected]> Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-26mei: dma ring: implement transmit flowTomas Winkler3-13/+142
Implement a circular buffer on allocated system memory. Read and write indices are stored on the control block which is also shared between the device and the host. Two new functions are exported from the DMA module: mei_dma_ring_write, and mei_dma_ring_empty_slots. The former simply copy a packet on the TX DMA circular buffer and later, returns the number of empty slots on the TX DMA circular buffer. Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Alexander Usyskin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-26mei: dma ring: implement rx circular buffer logicTomas Winkler6-15/+98
Implement circular buffer protocol over receive dma buffer. Add extension to the mei message header that holds length of the buffer on the dma buffer. Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Alexander Usyskin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-26mei: hw: add dma ring control blockTomas Winkler4-0/+46
The DMA ring control block contains write and read indices for host and device circular buffers. Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Alexander Usyskin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-26mei: hbm: setup dma ringTomas Winkler2-3/+85
DMA ring is allocated upon HBM handshake and the ring parameters are set via dedicated HBM_DMA_SETUP request command. The firmware will perform its setup and respond with a status. On failure the DMA buffers are released. Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Alexander Usyskin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-26mei: dma ring buffers allocationTomas Winkler4-0/+126
Allocate DMA ring buffers from managed coherent memory. Signed-off-by: Tomas Winkler <[email protected]> Signed-off-by: Alexander Usyskin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-26cxl: Use device_type helpers to access the node typeRob Herring1-3/+1
Remove directly accessing device_node.type pointer and use the accessors instead. This will eventually allow removing the type pointer. Signed-off-by: Rob Herring <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2018-11-26Merge 4.20-rc4 into char-misc-nextGreg Kroah-Hartman2-1/+5
We want the char/misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-12iommu/vtd: Cleanup dma_remapping.h headerLu Baolu2-2/+2
Commit e61d98d8dad00 ("x64, x2apic/intr-remap: Intel vt-d, IOMMU code reorganization") moved dma_remapping.h from drivers/pci/ to current place. It is entirely VT-d specific, but uses a generic name. This merges dma_remapping.h with include/linux/intel-iommu.h and removes dma_remapping.h as the result. Cc: Ashok Raj <[email protected]> Cc: Jacob Pan <[email protected]> Cc: Sohil Mehta <[email protected]> Suggested-by: Christoph Hellwig <[email protected]> Signed-off-by: Lu Baolu <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: Liu, Yi L <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
2018-11-11misc: atmel-ssc: Fix section annotation on atmel_ssc_get_driver_dataNathan Chancellor1-1/+1
After building the kernel with Clang, the following section mismatch warning appears: WARNING: vmlinux.o(.text+0x3bf19a6): Section mismatch in reference from the function ssc_probe() to the function .init.text:atmel_ssc_get_driver_data() The function ssc_probe() references the function __init atmel_ssc_get_driver_data(). This is often because ssc_probe lacks a __init annotation or the annotation of atmel_ssc_get_driver_data is wrong. Remove __init from atmel_ssc_get_driver_data to get rid of the mismatch. Signed-off-by: Nathan Chancellor <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-11drivers/misc/sgi-gru: fix Spectre v1 vulnerabilityGustavo A. R. Silva1-0/+4
req.gid can be indirectly controlled by user-space, hence leading to a potential exploitation of the Spectre variant 1 vulnerability. This issue was detected with the help of Smatch: vers/misc/sgi-gru/grukdump.c:200 gru_dump_chiplet_request() warn: potential spectre issue 'gru_base' [w] Fix this by sanitizing req.gid before calling macro GID_TO_GRU, which uses it to index gru_base. Notice that given that speculation windows are large, the policy is to kill the speculation on the first load and not worry if it can be completed with a dependent load/store [1]. [1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2 Cc: [email protected] Signed-off-by: Gustavo A. R. Silva <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic: remove a redundant commaPeng Hao1-1/+1
Remove a redundant comma in pvpanic_device_ids. Reviewed-by: Andy Shevchenko <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic: convert to SPDX license tagsPeng Hao1-15/+2
Updates license to use SPDX-License-Identifier instead of verbose license text. Reviewed-by: Andy Shevchenko <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic: change header file sort stylePeng Hao1-1/+1
Make header files alphabetical order. Signed-off-by: Peng Hao <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic: remove unnecessary header filePeng Hao1-1/+0
Remove unnecessary header file init.h. Reviewed-by: Andy Shevchenko <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic : break dependency on ACPIPeng Hao2-3/+22
The pvpanic driver is available for architectures that do not support ACPI.So break the dependency. Reviewed-by: Andy Shevchenko <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic : grouping ACPI related stuffPeng Hao1-22/+21
Grouping ACPI related stuff and make preparation to break the ACPI dependency w/o any functional change. Reviewed-by: Andy Shevchenko <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic: add support to get pvpanic device info FDTPeng Hao1-1/+63
By default, when ACPI tables and FDT coexist for ARM64, current kernel takes precedence over FDT to get device information. Virt machine in qemu provides both FDT and ACPI table. Increases the way to get information through FDT. Acked-by: Mark Rutland <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic: add MMIO supportPeng Hao1-5/+10
On some architectures (e.g. arm64), it's preferable to use MMIO, since this can be used standalone. Add MMIO support to the pvpanic driver. Suggested-by: Andy Shevchenko <[email protected]> [Use acpi_dev_resource_memory API. - Andy] Reviewed-by: Andy Shevchenko <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07misc/pvpanic: simplify the code using acpi_dev_resource_ioPeng Hao1-8/+5
Use acpi_dev_resource_io API. Suggested-by: Andy Shevchenko <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-11-07pvpanic: move pvpanic to misc as common driverPeng Hao3-0/+133
Move pvpanic.c from drivers/platform/x86 to drivers/misc. Following patches will use pvpanic device in arm64. Reviewed-by: Andy Shevchenko <[email protected]> Acked-by: Mark Rutland <[email protected]> Signed-off-by: Peng Hao <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
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