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2016-03-22AF_VSOCK: Shrink the area influenced by prepare_to_waitClaudio Imbrenda
When a thread is prepared for waiting by calling prepare_to_wait, sleeping is not allowed until either the wait has taken place or finish_wait has been called. The existing code in af_vsock imposed unnecessary no-sleep assumptions to a broad list of backend functions. This patch shrinks the influence of prepare_to_wait to the area where it is strictly needed, therefore relaxing the no-sleep restriction there. Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22Revert "vsock: Fix blocking ops call in prepare_to_wait"Claudio Imbrenda
This reverts commit 5988818008257ca42010d6b43a3e0e48afec9898 ("vsock: Fix blocking ops call in prepare_to_wait") The commit reverted with this patch caused us to potentially miss wakeups. Since the condition is not checked between the prepare_to_wait and the schedule(), if a wakeup happens after the condition is checked but before the sleep happens, we will miss it. ( A description of the problem can be found here: http://www.makelinux.net/ldd3/chp-6-sect-2 ). By reverting the patch, the behaviour is still incorrect (since we shouldn't sleep between the prepare_to_wait and the schedule) but at least it will not miss wakeups. The next patch in the series actually fixes the behaviour. Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22Merge tag 'nfs-for-4.6-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds
Pull NFS client updates from Trond Myklebust: "Highlights include: Features: - Add support for multiple NFSv4.1 callbacks in flight - Initial patchset for RPC multipath support - Adapt RPC/RDMA to use the new completion queue API Bugfixes and cleanups: - nfs4: nfs4_ff_layout_prepare_ds should return NULL if connection failed - Cleanups to remove nfs_inode_dio_wait and nfs4_file_fsync - Fix RPC/RDMA credit accounting - Properly handle RDMA_ERROR replies - xprtrdma: Do not wait if ib_post_send() fails - xprtrdma: Segment head and tail XDR buffers on page boundaries - xprtrdma cleanups for dprintk, physical_op_map and unused macros" * tag 'nfs-for-4.6-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (35 commits) nfs/blocklayout: make sure making a aligned read request nfs4: nfs4_ff_layout_prepare_ds should return NULL if connection failed nfs: remove nfs_inode_dio_wait nfs: remove nfs4_file_fsync xprtrdma: Use new CQ API for RPC-over-RDMA client send CQs xprtrdma: Use an anonymous union in struct rpcrdma_mw xprtrdma: Use new CQ API for RPC-over-RDMA client receive CQs xprtrdma: Serialize credit accounting again xprtrdma: Properly handle RDMA_ERROR replies rpcrdma: Add RPCRDMA_HDRLEN_ERR xprtrdma: Do not wait if ib_post_send() fails xprtrdma: Segment head and tail XDR buffers on page boundaries xprtrdma: Clean up dprintk format string containing a newline xprtrdma: Clean up physical_op_map() xprtrdma: Clean up unused RPCRDMA_INLINE_PAD_THRESH macro NFS add callback_ops to nfs4_proc_bind_conn_to_session_callback pnfs/NFSv4.1: Add multipath capabilities to pNFS flexfiles servers over NFSv3 SUNRPC: Allow addition of new transports to a struct rpc_clnt NFSv4.1: nfs4_proc_bind_conn_to_session must iterate over all connections SUNRPC: Make NFS swap work with multipath ...
2016-03-22Merge branch 'overlayfs-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull overlayfs updates from Miklos Szeredi: "Various fixes and tweaks" * 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: cleanup unused var in rename2 ovl: rename is_merge to is_lowest ovl: fixed coding style warning ovl: Ensure upper filesystem supports d_type ovl: Warn on copy up if a process has a R/O fd open to the lower file ovl: honor flag MS_SILENT at mount ovl: verify upper dentry before unlink and rename
2016-03-22macb: fix PHY resetSergei Shtylyov
The driver calls gpiod_set_value() with GPIOD_OUT_* instead of 0 and 1, as a result the PHY isn't really put back into reset state in macb_remove(). Moreover, the driver assumes that something else has set the GPIO direction to output, so if it has not, the PHY may not be taken out of reset in macb_probe() either... Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse update from Miklos Szeredi: "This contains direct I/O fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: return patrial success from fuse_direct_io() fuse: Add reference counting for fuse_io_priv fuse: do not use iocb after it may have been freed
2016-03-22ipv4: initialize flowi4_flags before calling fib_lookup()Lance Richardson
Field fl4.flowi4_flags is not initialized in fib_compute_spec_dst() before calling fib_lookup(), which means fib_table_lookup() is using non-deterministic data at this line: if (!(flp->flowi4_flags & FLOWI_FLAG_SKIP_NH_OIF)) { Fix by initializing the entire fl4 structure, which will prevent similar issues as fields are added in the future by ensuring that all fields are initialized to zero unless explicitly initialized to another value. Fixes: 58189ca7b2741 ("net: Fix vti use case with oif in dst lookups") Suggested-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: Lance Richardson <lrichard@redhat.com> Acked-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22fsl/fman: Workaround for Errata A-007273Igal Liberman
Errata A-007273 (For FMan V3 devices only): FMan soft reset is not finished properly if one of the Ethernet MAC clocks is disabled Workaround: Re-enable all disabled MAC clocks through the DCFG_CCSR_DEVDISR2 register prior to issuing an FMAN soft reset. Re-disable the MAC clocks after the FMAN soft reset is done. Signed-off-by: Igal Liberman <igal.liberman@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22Merge tag 'for-linus-4.6-rc0-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from David Vrabel: "Features and fixes for 4.6: - Make earlyprintk=xen work for HVM guests - Remove module support for things never built as modules" * tag 'for-linus-4.6-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: drivers/xen: make platform-pci.c explicitly non-modular drivers/xen: make sys-hypervisor.c explicitly non-modular drivers/xen: make xenbus_dev_[front/back]end explicitly non-modular drivers/xen: make [xen-]ballon explicitly non-modular xen: audit usages of module.h ; remove unnecessary instances xen/x86: Drop mode-selecting ifdefs in startup_xen() xen/x86: Zero out .bss for PV guests hvc_xen: make early_printk work with HVM guests hvc_xen: fix xenboot for DomUs hvc_xen: add earlycon support
2016-03-22ipv4: fix broadcast packets receptionPaolo Abeni
Currently, ingress ipv4 broadcast datagrams are dropped since, in udp_v4_early_demux(), ip_check_mc_rcu() is invoked even on bcast packets. This patch addresses the issue, invoking ip_check_mc_rcu() only for mcast packets. Fixes: 6e5403093261 ("ipv4/udp: Verify multicast group is ours in upd_v4_early_demux()") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22Merge branch 'i2c/for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "Mostly usual driver updates and improvements. The changelog should give an idea. Standing out is the i2c-qup driver with lots of new capabilities and we also have now an i2c-demuxer. I'd especially like to welcome Peter Rosin as the i2c-mux maintainer. He has an interesting series for muxes in the queue and agreed to look after this part of the subsystem. Thank you, Peter, and welcome again! The octeon changes were applied pretty recently before the merge window. I am aware. They are the first (and relatively simple) patches of a larger overhaul to this driver. In case something goes wrong with them, they are easy to fix (or revert). The advantage I see is that they are out of the way, and I can concentrate on the next block of patches. I really would like to apply the overhaul in smaller batches to avoid regressions. And waiting a cycle for the introductory patches seemed too much of a delay for me" * 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (39 commits) i2c: octeon: Support I2C_M_RECV_LEN i2c: octeon: Cleanup resource allocation code i2c: octeon: Cleanup i2c-octeon driver MAINTAINERS: add Peter Rosin as i2c mux maintainer dt-bindings: i2c: Spelling s/propoerty/property/ i2c: immediately mark ourselves as registered i2c: i801: sort IDs alphabetically MAINTAINERS: Mika and me are designated reviewers for I2C DESIGNWARE i2c: octeon: Cleanup kerneldoc comments i2c: do not use internal data from driver core i2c: cadence: Fix the kernel-doc warnings i2c: imx: remove extra spaces. i2c: rcar: don't open code of_device_get_match_data() i2c: qup: Fix fifo handling after adding V2 support i2c: xiic: Implement power management i2c: piix4: Pre-shift the port number i2c: piix4: Always use the same type for port i2c: piix4: Support alternative port selection register i2c: tegra: don't open code of_device_get_match_data() i2c: riic, sh_mobile, rcar: Use ARCH_RENESAS ...
2016-03-22Merge branch 'hns-fixes'David S. Miller
Yisen Zhuang says: ==================== net: hns: bugs fixed for hns This series includes some bug fixes and updates for hns driver. >from Daode, one fix about mss. >from Kejian, one fix about ping6 issue, one fix about mac address setting, two fix for RSS setting, two fix about mtu setting. >from qianqian, fixed HNS v2 xge statistic reg issue. >from Sheng, one fix about manage packets sending, one fix about GMACs mac setting. For more details, please see individual patches. Thanks a lot! --- change log: Series V2: - fix the comments as below: 1) modifies the wrong charator "whick" to "which" in commit log 2) use the "eth_hdr()" help to get source mac of packets 3) fix the wrong cast 4) use tabs instead of spaces to indent the value Series V1: - first submit ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: bug fix about the overflow of mssDaode Huang
When set MTU to the minimum value 68, there are increasing number of error packets occur, which is caused by the overflowed value of mss. This patch fix the bug. Signed-off-by: Daode Huang <huangdaode@hisilicon.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: adds limitation for debug port mtuKejian Yan
If mtu for debug port is set more than 1500, it may cause that packets are dropped by ppe. So maximum value for debug port should be 1500. Signed-off-by: Kejian Yan <yankejian@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: fix the bug about mtu settingKejian Yan
In chip V1, the maximum mtu value is 9600. But in chip V2, it is 9728. And it is always configurates as 9600 before this patch. Signed-off-by: Kejian Yan <yankejian@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: fixes a bug of RSSKejian Yan
If trying to get receive flow hash indirection table by ethtool, it needs to call .get_rxnfc to get ring number first. So this patch implements the .get_rxnfc of ethtool. And the data type of rss_indir_table is u32, it has to be multiply by the width of data type when using memcpy. Signed-off-by: Kejian Yan <yankejian@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: fix return value of the function about rssKejian Yan
Both .get_rxfh and .set_rxfh are always return 0, it should return result from hardware when getting or setting rss. And the rss function should return the correct data type. Signed-off-by: Kejian Yan <yankejian@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: set xge statistic reg as read onlyQianqian Xie
As the user manual of HNS V2 describs, XGE_DFX_CTRL_CFG.xge_dfx_ctrl_cfg should be configed as zero if we want xge statistic reg to be read only. But HNS V1 gets the other meanings. It needs to be identified the process and then config it rightly. Signed-off-by: Qianqian Xie <xieqianqian@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: fixed the bug about GMACs mac settingSheng Li
When sending a pause frame out from GMACs, the packets' source MAC address does not match the GMACs' MAC address. It causes by the condition before the mac address setting routine for GMACs, the mac address cannot be set into loacal mac table for service ports. It obviously the condition needs to be deleted. Signed-off-by: Sheng Li <lisheng011@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: add uc match for debug portsKejian Yan
Debug ports receives lots of packets with dest mac addr does not match local mac addr, because the filter is close, and it does not drop the useless packets. This patch adds ON/OFF switch of filtering the packets whose dest mac addr do not match the local addr in mac table. And the switch is ON in initialization. Signed-off-by: Kejian Yan <yankejian@huawei.com> Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: fixed portid bug in sending manage pktSheng Li
In chip V2, the default value of port id in tx BD is Zero. If it is not configurated to the other value, all management packets will be sent out from port0. So port_id in the tx BD needs to be updated when sending a management packet. In V2 chip, when sending mamagement packets, the driver should config the port id to BD descs. Signed-off-by: Sheng Li <lisheng011@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22net: hns: bug fix about ping6Kejian Yan
The current upstreaming code fails to ping other IPv6 net device, because the enet receives the multicast packets with the src mac addr which is the same as its mac addr. These packets need to be dropped. Signed-off-by: Kejian Yan <yankejian@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22ipv6: remove unused in6_addr structLuis de Bethencourt
struct in6_addr isn't used anymore in inet6_connection_sock.h, removing the forward declaration. Fixes: 1b33bc3e9e90 ("ipv6: remove obsolete inet6 functions") Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22netlink: add support for NIC driver ioctlsDavid Decotigny
By returning -ENOIOCTLCMD, sock_do_ioctl() falls back to calling dev_ioctl(), which provides support for NIC driver ioctls, which includes ethtool support. This is similar to the way ioctls are handled in udp.c or tcp.c. This removes the requirement that ethtool for example be tied to the support of a specific L3 protocol (ethtool uses an AF_INET socket today). Signed-off-by: David Decotigny <decot@googlers.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22ethtool: minor doc updateDavid Decotigny
Updates: commit 793cf87de9d1 ("ethtool: Set cmd field in ETHTOOL_GLINKSETTINGS response to wrong nwords") Signed-off-by: David Decotigny <decot@googlers.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-22Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target updates from Nicholas Bellinger: "The highlights this round include: - Add target_alloc_session() w/ callback helper for doing se_session allocation + tag + se_node_acl lookup. (HCH + nab) - Tree-wide fabric driver conversion to use target_alloc_session() - Convert sbp-target to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Chris Boot + nab) - Convert usb-gadget to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Andrzej Pietrasiewicz + nab) - Convert xen-scsiback to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Juergen Gross + nab) - Convert tcm_fc to use TARGET_SCF_ACK_KREF I/O + TMR krefs - Convert ib_srpt to use percpu_ida tag pre-allocation - Add DebugFS node for qla2xxx target sess list (Quinn) - Rework iser-target connection termination (Jenny + Sagi) - Convert iser-target to new CQ API (HCH) - Add pass-through WRITE_SAME support for IBLOCK (Mike Christie) - Introduce data_bitmap for asynchronous access of data area (Sheng Yang + Andy) - Fix target_release_cmd_kref shutdown comp leak (Himanshu Madhani) Also, there is a separate PULL request coming for cxgb4 NIC driver prerequisites for supporting hw iscsi segmentation offload (ISO), that will be the base for a number of v4.7 developments involving iscsi-target hw offloads" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (36 commits) target: Fix target_release_cmd_kref shutdown comp leak target: Avoid DataIN transfers for non-GOOD SAM status target/user: Report capability of handling out-of-order completions to userspace target/user: Fix size_t format-spec build warning target/user: Don't free expired command when time out target/user: Introduce data_bitmap, replace data_length/data_head/data_tail target/user: Free data ring in unified function target/user: Use iovec[] to describe continuous area target: Remove enum transport_lunflags_table target/iblock: pass WRITE_SAME to device if possible iser-target: Kill the ->isert_cmd back pointer in struct iser_tx_desc iser-target: Kill struct isert_rdma_wr iser-target: Convert to new CQ API iser-target: Split and properly type the login buffer iser-target: Remove ISER_RECV_DATA_SEG_LEN iser-target: Remove impossible condition from isert_wait_conn iser-target: Remove redundant wait in release_conn iser-target: Rework connection termination iser-target: Separate flows for np listeners and connections cma events iser-target: Add new state ISER_CONN_BOUND to isert_conn ...
2016-03-22Merge tag 'pci-v4.6-fixes-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "Here are two fixes for v4.6: - You merged a fix for a TI DRA7xx reset issue from another source, so Sekhar removed the "broken" tag from the driver, and - I botched a Kconfig merge and broke hotplug configuration for everybody, so Tero fixed that. Summary: TI DRA7xx host bridge driver: Revert "PCI: dra7xx: Mark driver as broken" (Sekhar Nori) Miscellaneous: Restore inclusion of pci/hotplug Kconfig (Tero Roponen)" * tag 'pci-v4.6-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: Revert "PCI: dra7xx: Mark driver as broken" PCI: Restore inclusion of pci/hotplug Kconfig
2016-03-22Merge tag 'sound-fix-4.6-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "The previous pull request introduced a few WARN_ON() for Intel HD-audio HDMI. Indeed it caught bugs, and now users get annoyed. So this request came up: a collection of small fixes to paper over the inconsistencies on (mostly) old Intel chipsets. In addition, a trivial USB-audio quirk is included, too" * tag 'sound-fix-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Fix missing ELD update at unplugging ALSA: usb-audio: add Microsoft HD-5001 to quirks ALSA: hda - Workaround for unbalanced i915 power refcount by concurrent probe ALSA: hda - Fix spurious kernel WARNING on Baytrail HDMI ALSA: hda - Fix forgotten HDMI monitor_present update ALSA: hda - Really restrict i915 notifier to HSW+
2016-03-22Merge tag 'iommu-updates-v4.6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: - updates for the Exynos IOMMU driver to make use of default domains and to add support for the SYSMMU v5 - new Mediatek IOMMU driver - support for the ARMv7 short descriptor format in the io-pgtable code - default domain support for the ARM SMMU - couple of other small fixes all over the place * tag 'iommu-updates-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (41 commits) iommu/ipmmu-vmsa: Add r8a7795 DT binding iommu/mediatek: Check for NULL instead of IS_ERR() iommu/io-pgtable-armv7s: Fix kmem_cache_alloc() flags iommu/mediatek: Fix handling of of_count_phandle_with_args result iommu/dma: Fix NEED_SG_DMA_LENGTH dependency iommu/mediatek: Mark PM functions as __maybe_unused iommu/mediatek: Select ARM_DMA_USE_IOMMU iommu/exynos: Use proper readl/writel register interface iommu/exynos: Pointers are nto physical addresses dts: mt8173: Add iommu/smi nodes for mt8173 iommu/mediatek: Add mt8173 IOMMU driver memory: mediatek: Add SMI driver dt-bindings: mediatek: Add smi dts binding dt-bindings: iommu: Add binding for mediatek IOMMU iommu/ipmmu-vmsa: Use ARCH_RENESAS iommu/exynos: Support multiple attach_device calls iommu/exynos: Add Maintainers entry for Exynos SYSMMU driver iommu/exynos: Add support for v5 SYSMMU iommu/exynos: Update device tree documentation iommu/exynos: Add support for SYSMMU controller with bogus version reg ...
2016-03-22KVM: page_track: fix access to NULL slotPaolo Bonzini
This happens when doing the reboot test from virt-tests: [ 131.833653] BUG: unable to handle kernel NULL pointer dereference at (null) [ 131.842461] IP: [<ffffffffa0950087>] kvm_page_track_is_active+0x17/0x60 [kvm] [ 131.850500] PGD 0 [ 131.852763] Oops: 0000 [#1] SMP [ 132.007188] task: ffff880075fbc500 ti: ffff880850a3c000 task.ti: ffff880850a3c000 [ 132.138891] Call Trace: [ 132.141639] [<ffffffffa092bd11>] page_fault_handle_page_track+0x31/0x40 [kvm] [ 132.149732] [<ffffffffa093380f>] paging64_page_fault+0xff/0x910 [kvm] [ 132.172159] [<ffffffffa092c734>] kvm_mmu_page_fault+0x64/0x110 [kvm] [ 132.179372] [<ffffffffa06743c2>] handle_exception+0x1b2/0x430 [kvm_intel] [ 132.187072] [<ffffffffa067a301>] vmx_handle_exit+0x1e1/0xc50 [kvm_intel] ... Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com> Fixes: 3d0c27ad6ee465f174b09ee99fcaf189c57d567a Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM: PPC: do not compile in vfio.o unconditionallyPaolo Bonzini
Build on 32-bit PPC fails with the following error: int kvm_vfio_ops_init(void) ^ In file included from arch/powerpc/kvm/../../../virt/kvm/vfio.c:21:0: arch/powerpc/kvm/../../../virt/kvm/vfio.h:8:90: note: previous definition of ‘kvm_vfio_ops_init’ was here arch/powerpc/kvm/../../../virt/kvm/vfio.c:292:6: error: redefinition of ‘kvm_vfio_ops_exit’ void kvm_vfio_ops_exit(void) ^ In file included from arch/powerpc/kvm/../../../virt/kvm/vfio.c:21:0: arch/powerpc/kvm/../../../virt/kvm/vfio.h:12:91: note: previous definition of ‘kvm_vfio_ops_exit’ was here scripts/Makefile.build:258: recipe for target arch/powerpc/kvm/../../../virt/kvm/vfio.o failed make[3]: *** [arch/powerpc/kvm/../../../virt/kvm/vfio.o] Error 1 Check whether CONFIG_KVM_VFIO is set before including vfio.o in the build. Reported-by: Pranith Kumar <bobby.prani@gmail.com> Tested-by: Pranith Kumar <bobby.prani@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22kvm, rt: change async pagefault code locking for PREEMPT_RTRik van Riel
The async pagefault wake code can run from the idle task in exception context, so everything here needs to be made non-preemptible. Conversion to a simple wait queue and raw spinlock does the trick. Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM/PPC: update the comment of memory barrier in the kvmppc_prepare_to_enter()Lan Tianyu
The barrier also orders the write to mode from any reads to the page tables done and so update the comment. Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM/x86: update the comment of memory barrier in the vcpu_enter_guest()Lan Tianyu
The barrier also orders the write to mode from any reads to the page tables done and so update the comment. Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM: Replace smp_mb() with smp_load_acquire() in the kvm_flush_remote_tlbs()Lan Tianyu
smp_load_acquire() is enough here and it's cheaper than smp_mb(). Adding a comment about reusing memory barrier of kvm_make_all_cpus_request() here to keep order between modifications to the page tables and reading mode. Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM/x86: Call smp_wmb() before increasing tlbs_dirtyLan Tianyu
Update spte before increasing tlbs_dirty to make sure no tlb flush in lost after spte is zapped. This pairs with the barrier in the kvm_flush_remote_tlbs(). Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM: Replace smp_mb() with smp_mb_after_atomic() in the ↵Lan Tianyu
kvm_make_all_cpus_request() Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM/x86: Replace smp_mb() with smp_store_mb/release() in the ↵Lan Tianyu
walk_shadow_page_lockless_begin/end() Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM: Remove redundant smp_mb() in the kvm_mmu_commit_zap_page()Lan Tianyu
There is already a barrier inside of kvm_flush_remote_tlbs() which can help to make sure everyone sees our modifications to the page tables and see changes to vcpu->mode here. So remove the smp_mb in the kvm_mmu_commit_zap_page() and update the comment. Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM, pkeys: expose CPUID/CR4 to guestHuaitong Han
X86_FEATURE_PKU is referred to as "PKU" in the hardware documentation: CPUID.7.0.ECX[3]:PKU. X86_FEATURE_OSPKE is software support for pkeys, enumerated with CPUID.7.0.ECX[4]:OSPKE, and it reflects the setting of CR4.PKE(bit 22). This patch disables CPUID:PKU without ept, because pkeys is not yet implemented for shadow paging. Signed-off-by: Huaitong Han <huaitong.han@intel.com> Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM, pkeys: add pkeys support for permission_faultHuaitong Han
Protection keys define a new 4-bit protection key field (PKEY) in bits 62:59 of leaf entries of the page tables, the PKEY is an index to PKRU register(16 domains), every domain has 2 bits(write disable bit, access disable bit). Static logic has been produced in update_pkru_bitmask, dynamic logic need read pkey from page table entries, get pkru value, and deduce the correct result. [ Huaitong: Xiao helps to modify many sections. ] Signed-off-by: Huaitong Han <huaitong.han@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM, pkeys: introduce pkru_mask to cache conditionsHuaitong Han
PKEYS defines a new status bit in the PFEC. PFEC.PK (bit 5), if some conditions is true, the fault is considered as a PKU violation. pkru_mask indicates if we need to check PKRU.ADi and PKRU.WDi, and does cache some conditions for permission_fault. [ Huaitong: Xiao helps to modify many sections. ] Signed-off-by: Huaitong Han <huaitong.han@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM, pkeys: save/restore PKRU when guest/host switchesXiao Guangrong
Currently XSAVE state of host is not restored after VM-exit and PKRU is managed by XSAVE so the PKRU from guest is still controlling the memory access even if the CPU is running the code of host. This is not safe as KVM needs to access the memory of userspace (e,g QEMU) to do some emulation. So we save/restore PKRU when guest/host switches. Signed-off-by: Huaitong Han <huaitong.han@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22x86: pkey: introduce write_pkru() for KVMXiao Guangrong
KVM will use it to switch pkru between guest and host. CC: Ingo Molnar <mingo@redhat.com> CC: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Huaitong Han <huaitong.han@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM, pkeys: add pkeys support for xsave stateHuaitong Han
This patch adds pkeys support for xsave state. Signed-off-by: Huaitong Han <huaitong.han@intel.com> Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM, pkeys: disable pkeys for guests in non-paging modeHuaitong Han
Pkeys is disabled if CPU is in non-paging mode in hardware. However KVM always uses paging mode to emulate guest non-paging, mode with TDP. To emulate this behavior, pkeys needs to be manually disabled when guest switches to non-paging mode. Signed-off-by: Huaitong Han <huaitong.han@intel.com> Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM: x86: remove magic number with enum cpuid_leafsHuaitong Han
This patch removes magic number with enum cpuid_leafs. Signed-off-by: Huaitong Han <huaitong.han@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22KVM: MMU: return page fault error code from permission_faultPaolo Bonzini
This will help in the implementation of PKRU, where the PK bit of the page fault error code cannot be computed in advance (unlike I/D, R/W and U/S). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22perf list: Fix documentation of :pppAndi Kleen
Correctly document what is implemented for :ppp on Intel CPUs in recent kernels. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1458575793-12091-2-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-22Revert "PCI: dra7xx: Mark driver as broken"Sekhar Nori
Revert 5c3b99d05752 ("PCI: dra7xx: Mark driver as broken"). 1c96bee4df19 ("ARM: DRA7: hwmod: Add custom reset handler for PCIeSS") added support to de-assert PCIe reset, so DRA7x PCIe is not broken anymore. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-02 04:47:49 +0000