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2018-01-19caif: reduce stack size with KASANArnd Bergmann1-0/+27
When CONFIG_KASAN is set, we can use relatively large amounts of kernel stack space: net/caif/cfctrl.c:555:1: warning: the frame size of 1600 bytes is larger than 1280 bytes [-Wframe-larger-than=] This adds convenience wrappers around cfpkt_extr_head(), which is responsible for most of the stack growth. With those wrapper functions, gcc apparently starts reusing the stack slots for each instance, thus avoiding the problem. Signed-off-by: Arnd Bergmann <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-01-19sparse doesn't support struct randomizationMatthew Wilcox1-1/+1
Without this patch, I drown in a sea of unknown attribute warnings Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Matthew Wilcox <[email protected]> Acked-by: Kees Cook <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Josh Poimboeuf <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-01-19PCI: Add dummy pci_irqd_intx_xlate() for CONFIG_PCI=n buildNiklas Cassel1-0/+7
Some hardware can operate in either "host" or "endpoint" mode, which means there can be both a host bridge driver and an endpoint driver for the same device. Those drivers share a lot of code, so sometimes they live in the same source file. The host bridge driver requires CONFIG_PCI=y because it enumerates PCI devices below the bridge using the PCI core. The endpoint driver does not require CONFIG_PCI=y because it runs in an embedded kernel on the other side of the device, e.g., on an adapter card. pci-dra7xx.c contains both host and endpoint drivers. If we select only the endpoint driver (CONFIG_PCI=n and CONFIG_PCI_DRA7XX_EP=y), the unneeded host driver is still compiled. It references pci_irqd_intx_xlate(), which is not present when CONFIG_PCI=n, which causes this error: drivers/pci/dwc/pci-dra7xx.c:229:11: error: 'pci_irqd_intx_xlate' undeclared here (not in a function) Add a dummy pci_irqd_intx_xlate() for the CONFIG_PCI=n case. [bhelgaas: changelog] Signed-off-by: Niklas Cassel <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Acked-by: Lorenzo Pieralisi <[email protected]>
2018-01-19string: drop __must_check from strscpy() and restore strscpy() usages in cgroupTejun Heo1-1/+1
e7fd37ba1217 ("cgroup: avoid copying strings longer than the buffers") converted possibly unsafe strncpy() usages in cgroup to strscpy(). However, although the callsites are completely fine with truncated copied, because strscpy() is marked __must_check, it led to the following warnings. kernel/cgroup/cgroup.c: In function ‘cgroup_file_name’: kernel/cgroup/cgroup.c:1400:10: warning: ignoring return value of ‘strscpy’, declared with attribute warn_unused_result [-Wunused-result] strscpy(buf, cft->name, CGROUP_FILE_NAME_MAX); ^ To avoid the warnings, 50034ed49645 ("cgroup: use strlcpy() instead of strscpy() to avoid spurious warning") switched them to strlcpy(). strlcpy() is worse than strlcpy() because it unconditionally runs strlen() on the source string, and the only reason we switched to strlcpy() here was because it was lacking __must_check, which doesn't reflect any material differences between the two function. It's just that someone added __must_check to strscpy() and not to strlcpy(). These basic string copy operations are used in variety of ways, and one of not-so-uncommon use cases is safely handling truncated copies, where the caller naturally doesn't care about the return value. The __must_check doesn't match the actual use cases and forces users to opt for inferior variants which lack __must_check by happenstance or spread ugly (void) casts. Remove __must_check from strscpy() and restore strscpy() usages in cgroup. Signed-off-by: Tejun Heo <[email protected]> Suggested-by: Linus Torvalds <[email protected]> Cc: Ma Shimiao <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Chris Metcalf <[email protected]>
2018-01-19netfilter: nf_tables: allocate handle and delete objects via handleHarsha Sharma2-2/+19
This patch allows deletion of objects via unique handle which can be listed via '-a' option. Signed-off-by: Harsha Sharma <[email protected]> Signed-off-by: Pablo Neira Ayuso <[email protected]>
2018-01-19Merge tag 'asoc-v4.16-3' of ↵Takashi Iwai16-27/+108
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next ASoC: Updates for v4.16 Some final updates for the merge window, this brings in some improvements to the ACPI GPIO handling for Intel and a bunch of fixes.
2018-01-19cxl: Add support for ASB_Notify on POWER9Christophe Lombard1-4/+6
The POWER9 core supports a new feature: ASB_Notify which requires the support of the Special Purpose Register: TIDR. The ASB_Notify command, generated by the AFU, will attempt to wake-up the host thread identified by the particular LPID:PID:TID. This patch assign a unique TIDR (thread id) for the current thread which will be used in the process element entry. Signed-off-by: Christophe Lombard <[email protected]> Reviewed-by: Philippe Bergheaud <[email protected]> Acked-by: Frederic Barrat <[email protected]> Reviewed-by: Vaibhav Jain <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]>
2018-01-19KVM: PPC: Book3S: Provide information about hardware/firmware CVE workaroundsPaul Mackerras1-0/+3
This adds a new ioctl, KVM_PPC_GET_CPU_CHAR, that gives userspace information about the underlying machine's level of vulnerability to the recently announced vulnerabilities CVE-2017-5715, CVE-2017-5753 and CVE-2017-5754, and whether the machine provides instructions to assist software to work around the vulnerabilities. The ioctl returns two u64 words describing characteristics of the CPU and required software behaviour respectively, plus two mask words which indicate which bits have been filled in by the kernel, for extensibility. The bit definitions are the same as for the new H_GET_CPU_CHARACTERISTICS hypercall. There is also a new capability, KVM_CAP_PPC_GET_CPU_CHAR, which indicates whether the new ioctl is available. Signed-off-by: Paul Mackerras <[email protected]>
2018-01-18dt-bindings: clock: Add jz4770-cgu.h headerPaul Cercueil1-0/+58
This will be used from the devicetree bindings to specify the clocks that should be obtained from the jz4770-cgu driver. Signed-off-by: Paul Cercueil <[email protected]> Acked-by: Stephen Boyd <[email protected]> Reviewed-by: Rob Herring <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: Maarten ter Huurne <[email protected]> Cc: [email protected] Patchwork: https://patchwork.linux-mips.org/patch/18481/ Signed-off-by: James Hogan <[email protected]>
2018-01-18bpf: offload: report device information about offloaded mapsJakub Kicinski2-0/+5
Tell user space about device on which the map was created. Unfortunate reality of user ABI makes sharing this code with program offload difficult but the information is the same. Signed-off-by: Jakub Kicinski <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-01-18Merge branch 'punch-hole' of ↵Bob Peterson76-406/+332
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git
2018-01-18bpf: add comments to BPF ld/ldx sizesJesper Dangaard Brouer2-4/+5
Doc BPF ld/ldx size defines as comments in code, as it makes in faster to lookup in a programming/review setting, than looking up the sizes in Documentation/networking/filter.txt. Signed-off-by: Jesper Dangaard Brouer <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-01-18block: Unexport elv_register_queue() and elv_unregister_queue()Bart Van Assche1-2/+0
These two functions are only called from inside the block layer so unexport them. Reviewed-by: Christoph Hellwig <[email protected]> Signed-off-by: Bart Van Assche <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2018-01-18IB/mlx5: Mmap the HCA's clock info to user-spaceFeras Daoud1-1/+17
This patch maps the new page to user space applications to allow converting a user space completion timestamp to system wall time at the lowest possible latency cost. By using a versioning scheme we allow compatibility between current and future userspace libraries. The change moves mlx5_ib_mmap_cmd enum from mlx5_ib.h to the abi header file mlx5-abi.h. Reviewed-by: Alex Vesker <[email protected]> Reviewed-by: Yishai Hadas <[email protected]> Signed-off-by: Feras Daoud <[email protected]> Signed-off-by: Eitan Rabin <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Doug Ledford <[email protected]>
2018-01-18net/mlx5e: Add clock info page to mlx5 core devicesFeras Daoud2-0/+19
Adds a new page to mlx5 core containing clock info data that allows user level applications to translate between cqe timestamp to nanoseconds. The information stored into this page is represented through mlx5_ib_clock_info. In order to synchronize between kernel and user space a sequence number is incremented at the beginning and end of each update. An odd number means the data is being updated while an even means the access was already done. To guarantee that the data structure was accessed atomically user will: repeat: seq1 = <read sequence> goto <repeate> while odd <read data structure> seq2 = <read sequence> if seq1 != seq2 goto repeat Reviewed-by: Yishai Hadas <[email protected]> Reviewed-by: Jason Gunthorpe <[email protected]> Reviewed-by: Alex Vesker <[email protected]> Signed-off-by: Feras Daoud <[email protected]> Signed-off-by: Eitan Rabin <[email protected]> Signed-off-by: Leon Romanovsky <[email protected]> Signed-off-by: Doug Ledford <[email protected]>
2018-01-18RDMA/bnxt_re: Add SRQ support for Broadcom adaptersDevesh Sharma1-0/+9
Shared receive queue (SRQ) is defined as a pool of receive buffers shared among multiple QPs which belong to same protection domain in a given process context. Use of SRQ reduces the memory foot print of IB applications. Broadcom adapters support SRQ, adding code-changes to enable shared receive queue. Signed-off-by: Devesh Sharma <[email protected]> Signed-off-by: Doug Ledford <[email protected]>
2018-01-18PCI: Add wrappers for dev_printk()Frederick Lawler1-0/+12
Add PCI-specific dev_printk() wrappers and use them to simplify the code slightly. No functional change intended. Signed-off-by: Frederick Lawler <[email protected]> [bhelgaas: squash into one patch] Signed-off-by: Bjorn Helgaas <[email protected]>
2018-01-18svcrdma: Post Receives in the Receive completion handlerChuck Lever1-2/+0
This change improves Receive efficiency by posting Receives only on the same CPU that handles Receive completion. Improved latency and throughput has been noted with this change. Signed-off-by: Chuck Lever <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2018-01-18Merge remote-tracking branches 'asoc/topic/stm32', 'asoc/topic/sun4i-i2s', ↵Mark Brown1-3/+0
'asoc/topic/sunxi', 'asoc/topic/symmetry' and 'asoc/topic/tas5720' into asoc-next
2018-01-18Merge remote-tracking branches 'asoc/topic/rl6231', 'asoc/topic/rt5514', ↵Mark Brown2-0/+5
'asoc/topic/rt5645' and 'asoc/topic/samsung' into asoc-next
2018-01-18Merge remote-tracking branches 'asoc/topic/hisilicon', 'asoc/topic/iio', ↵Mark Brown5-28/+104
'asoc/topic/max98373' and 'asoc/topic/max98926' into asoc-next
2018-01-18Merge remote-tracking branches 'asoc/topic/fsl', 'asoc/topic/fsl-ssi', ↵Mark Brown3-0/+19
'asoc/topic/fsl_asrc' and 'asoc/topic/hdac_hdmi' into asoc-next
2018-01-18Merge remote-tracking branches 'asoc/topic/cs47l24', 'asoc/topic/cx20442', ↵Mark Brown1-3/+1
'asoc/topic/da7213', 'asoc/topic/da7218' and 'asoc/topic/dai-drv' into asoc-next
2018-01-18Merge remote-tracking branch 'asoc/topic/rcar' into asoc-nextMark Brown1-0/+2
2018-01-18Merge remote-tracking branch 'asoc/topic/intel' into asoc-nextMark Brown5-13/+30
2018-01-18Merge remote-tracking branch 'asoc/topic/core' into asoc-nextMark Brown1-0/+3
2018-01-18Merge remote-tracking branch 'asoc/fix/intel' into asoc-linusMark Brown2-0/+2
2018-01-18lockdep: Convert some users to constMatthew Wilcox3-6/+4
These users of lockdep_is_held() either wanted lockdep_is_held to take a const pointer, or would benefit from providing a const pointer. Signed-off-by: Matthew Wilcox <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Peter Zijlstra (Intel) <[email protected]> Cc: "David S. Miller" <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
2018-01-18lockdep: Make lockdep checking constantMatthew Wilcox1-2/+2
There are several places in the kernel which would like to pass a const pointer to lockdep_is_held(). Constify the entire path so nobody has to trick the compiler. Signed-off-by: Matthew Wilcox <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Peter Zijlstra (Intel) <[email protected]> Cc: "David S. Miller" <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
2018-01-18xfrm: Add ESN support for IPSec HW offloadYossef Efraim2-0/+13
This patch adds ESN support to IPsec device offload. Adding new xfrm device operation to synchronize device ESN. Signed-off-by: Yossef Efraim <[email protected]> Signed-off-by: Shannon Nelson <[email protected]> Signed-off-by: Steffen Klassert <[email protected]>
2018-01-18mmc: slot-gpio: add a helper to check capability of GPIO WP detectionMasahiro Yamada1-0/+1
Like mmc_can_gpio_cd(), mmc_can_gpio_ro() will also be useful for host drivers to know whether GPIO write-protect detection is supported. Signed-off-by: Masahiro Yamada <[email protected]> Signed-off-by: Ulf Hansson <[email protected]>
2018-01-18Merge branches 'acpi-gpio', 'acpi-button', 'acpi-battery' and 'acpi-video'Rafael J. Wysocki2-0/+9
* acpi-gpio: gpio: merrifield: Add support of ACPI enabled platforms ACPI: utils: Introduce acpi_dev_get_first_match_name() * acpi-button: ACPI: button: Add a LID switch blacklist and add 1 model to it ACPI: button: Add a debug message when we're sending a LID event * acpi-battery: ACPI / battery: Add quirk for Asus GL502VSK and UX305LA ACPI: battery: Drop redundant test for failure * acpi-video: ACPI / video: Default lcd_only to true on Win8-ready and newer machines
2018-01-18Merge branch 'acpica'Rafael J. Wysocki6-20/+180
* acpica: (40 commits) ACPICA: Update version to 20171215 ACPICA: trivial style fix, no functional change ACPICA: Fix a couple memory leaks during package object resolution ACPICA: Recognize the Windows 10 version 1607 and 1703 OSI strings ACPICA: DT compiler: prevent error if optional field at the end of table is not present ACPICA: Rename a global variable, no functional change ACPICA: Create and deploy safe version of strncpy ACPICA: Cleanup the global variables and update comments ACPICA: Debugger: fix slight indentation issue ACPICA: Fix a regression in the acpi_evaluate_object_type() interface ACPICA: Update for a few debug output statements ACPICA: Debug output, no functional change ACPICA: Update information in MAINTAINERS ACPICA: Rename variable to match upstream ACPICA: Update version to 20171110 ACPICA: ACPI 6.2: Additional PPTT flags ACPICA: Update linkage for get mutex name interface ACPICA: Update mutex error messages, no functional change ACPICA: Debugger: add "background" command for method execution ACPICA: Small typo fix, no functional change ...
2018-01-18Merge branches 'acpi-pm' and 'pm-sleep'Rafael J. Wysocki2-26/+3
* acpi-pm: platform/x86: surfacepro3: Support for wakeup from suspend-to-idle ACPI / PM: Use Low Power S0 Idle on more systems ACPI / PM: Make it possible to ignore the system sleep blacklist * pm-sleep: PM / hibernate: Drop unused parameter of enough_swap block, scsi: Fix race between SPI domain validation and system suspend PM / sleep: Make lock/unlock_system_sleep() available to kernel modules PM: hibernate: Do not subtract NR_FILE_MAPPED in minimum_image_size()
2018-01-18Merge branch 'pm-core'Rafael J. Wysocki2-4/+19
* pm-core: (29 commits) dmaengine: rcar-dmac: Make DMAC reinit during system resume explicit PM / runtime: Allow no callbacks in pm_runtime_force_suspend|resume() PM / runtime: Check ignore_children in pm_runtime_need_not_resume() PM / runtime: Rework pm_runtime_force_suspend/resume() PM / wakeup: Print warn if device gets enabled as wakeup source during sleep PM / core: Propagate wakeup_path status flag in __device_suspend_late() PM / core: Re-structure code for clearing the direct_complete flag PM: i2c-designware-platdrv: Optimize power management PM: i2c-designware-platdrv: Use DPM_FLAG_SMART_PREPARE PM / mfd: intel-lpss: Use DPM_FLAG_SMART_SUSPEND PCI / PM: Use SMART_SUSPEND and LEAVE_SUSPENDED flags for PCIe ports PM / wakeup: Add device_set_wakeup_path() helper to control wakeup path PM / core: Assign the wakeup_path status flag in __device_prepare() PM / wakeup: Do not fail dev_pm_attach_wake_irq() unnecessarily PM / core: Direct DPM_FLAG_LEAVE_SUSPENDED handling PM / core: Direct DPM_FLAG_SMART_SUSPEND optimization PM / core: Add helpers for subsystem callback selection PM / wakeup: Drop redundant check from device_init_wakeup() PM / wakeup: Drop redundant check from device_set_wakeup_enable() PM / wakeup: only recommend "call"ing device_init_wakeup() once ...
2018-01-18Merge branch 'pm-cpufreq'Rafael J. Wysocki2-67/+18
* pm-cpufreq: (36 commits) cpufreq: scpi: remove arm_big_little dependency drivers: psci: remove cluster terminology and dependency on physical_package_id cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin cpufreq: intel_pstate: Add Skylake servers support cpufreq: intel_pstate: Replace bxt_funcs with core_funcs cpufreq: imx6q: add 696MHz operating point for i.mx6ul ARM: dts: imx6ul: add 696MHz operating point cpufreq: stats: Change return type of cpufreq_stats_update() as void powernv-cpufreq: Treat pstates as opaque 8-bit values powernv-cpufreq: Fix pstate_to_idx() to handle non-continguous pstates powernv-cpufreq: Add helper to extract pstate from PMSR cpu_cooling: Remove static-power related documentation cpufreq: imx6q: switch to Use clk_bulk_get() to refine clk operations PM / OPP: Make local function ti_opp_supply_set_opp() static PM / OPP: Add ti-opp-supply driver dt-bindings: opp: Introduce ti-opp-supply bindings cpufreq: ti-cpufreq: Add support for multiple regulators cpufreq: ti-cpufreq: Convert to module_platform_driver cpufreq: Add DVFS support for Armada 37xx MAINTAINERS: add new entries for Armada 37xx cpufreq driver ...
2018-01-18Merge branch 'pm-cpufreq-thermal' into pm-cpufreqRafael J. Wysocki2-67/+18
* pm-cpufreq-thermal: cpu_cooling: Remove static-power related documentation cpu_cooling: Drop static-power related stuff cpu_cooling: Keep only one of_cpufreq*cooling_register() helper cpu_cooling: Remove unused cpufreq_power_cooling_register() cpu_cooling: Make of_cpufreq_power_cooling_register() parse DT
2018-01-18bpf: add new jited info fields in bpf_dev_offload and bpf_prog_infoJiong Wang1-0/+2
For host JIT, there are "jited_len"/"bpf_func" fields in struct bpf_prog used by all host JIT targets to get jited image and it's length. While for offload, targets are likely to have different offload mechanisms that these info are kept in device private data fields. Therefore, BPF_OBJ_GET_INFO_BY_FD syscall needs an unified way to get JIT length and contents info for offload targets. One way is to introduce new callback to parse device private data then fill those fields in bpf_prog_info. This might be a little heavy, the other way is to add generic fields which will be initialized by all offload targets. This patch follow the second approach to introduce two new fields in struct bpf_dev_offload and teach bpf_prog_get_info_by_fd about them to fill correct jited_prog_len and jited_prog_insns in bpf_prog_info. Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: Jiong Wang <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-01-17PCI: Remove NULL device handling from PCI DMA APIChristoph Hellwig1-14/+13
Historically some ISA drivers used the old PCI DMA API with a NULL pdev argument, but these days this isn't used and not too useful due to the per-device DMA ops, so remove it. Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]>
2018-01-17PCI: Move OF-related PCI functions into PCI coreRob Herring1-1/+1
Following what has been done for other subsystems, move the remaining PCI related code out of drivers/of/ and into drivers/pci/of.c With this, we can kill a few kconfig symbols. Signed-off-by: Rob Herring <[email protected]> [bhelgaas: minor whitespace, comment cleanups] Signed-off-by: Bjorn Helgaas <[email protected]> Cc: Frank Rowand <[email protected]>
2018-01-18BackMerge tag 'v4.15-rc8' into drm-nextDave Airlie44-131/+284
Linux 4.15-rc8 Daniel requested this for so the intel CI won't fall over on drm-next so often.
2018-01-17Merge tag 'linux-can-next-for-4.16-20180116' of ↵David S. Miller2-0/+8
ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next Marc Kleine-Budde says: ==================== pull-request: can-next 2018-01-16 this is a pull request for net-next/master consisting of 9 patches. This is a series of patches, some of them initially by Franklin S Cooper Jr, which was picked up by Faiz Abbas. Faiz Abbas added some patches while working on this series, I contributed one as well. The first two patches add support to CAN device infrastructure to limit the bitrate of a CAN adapter if the used CAN-transceiver has a certain maximum bitrate. The remaining patches improve the m_can driver. They add support for bitrate limiting to the driver, clean up the driver and add support for runtime PM. ==================== Signed-off-by: David S. Miller <[email protected]>
2018-01-17vxlan: Fix trailing semicolonLuis de Bethencourt1-1/+1
The trailing semicolon is an empty statement that does no operation. It is completely stripped out by the compiler. Removing it since it doesn't do anything. Fixes: 5f35227ea34b ("net: Generalize ndo_gso_check to ndo_features_check") Signed-off-by: Luis de Bethencourt <[email protected]> Acked-by: Stephen Hemminger <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-01-17tun: allow to attach ebpf socket filterJason Wang1-0/+1
This patch allows userspace to attach eBPF filter to tun. This will allow to implement VM dataplane filtering in a more efficient way compared to cBPF filter by allowing either qemu or libvirt to attach eBPF filter to tun. Signed-off-by: Jason Wang <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-01-17Merge branch 'sched-urgent-for-linus' of ↵Linus Torvalds1-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Ingo Molnar: "A delayacct statistics correctness fix" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: delayacct: Account blkio completion on the correct task
2018-01-17Merge branch 'x86-pti-for-linus' of ↵Linus Torvalds1-1/+7
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 pti bits and fixes from Thomas Gleixner: "This last update contains: - An objtool fix to prevent a segfault with the gold linker by changing the invocation order. That's not just for gold, it's a general robustness improvement. - An improved error message for objtool which spares tearing hairs. - Make KASAN fail loudly if there is not enough memory instead of oopsing at some random place later - RSB fill on context switch to prevent RSB underflow and speculation through other units. - Make the retpoline/RSB functionality work reliably for both Intel and AMD - Add retpoline to the module version magic so mismatch can be detected - A small (non-fix) update for cpufeatures which prevents cpu feature clashing for the upcoming extra mitigation bits to ease backporting" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: module: Add retpoline tag to VERMAGIC x86/cpufeature: Move processor tracing out of scattered features objtool: Improve error message for bad file argument objtool: Fix seg fault with gold linker x86/retpoline: Add LFENCE to the retpoline/RSB filling RSB macros x86/retpoline: Fill RSB on context switch for affected CPUs x86/kasan: Panic if there is not enough memory to boot
2018-01-17net: sched: introduce ingress/egress block index attributes for qdiscJiri Pirko2-0/+9
Introduce two new attributes to be used for qdisc creation and dumping. One for ingress block, one for egress block. Introduce a set of ops that qdisc which supports block sharing would implement. Passing block indexes in qdisc change is not supported yet and it is checked and forbidded. In future, these attributes are to be reused for specifying block indexes for classes as well. As of this moment however, it is not supported so a check is in place to forbid it. Suggested-by: Roopa Prabhu <[email protected]> Signed-off-by: Jiri Pirko <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Acked-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-01-17net: sched: use block index as a handle instead of qdisc when block is sharedJiri Pirko1-0/+10
As the tcm_ifindex with value TCM_IFINDEX_MAGIC_BLOCK is invalid ifindex, use it to indicate that we work with block, instead of qdisc. So if tcm_ifindex is set to TCM_IFINDEX_MAGIC_BLOCK, tcm_parent is used to carry block_index. If the block is set to be shared between at least 2 qdiscs, it is forbidden to use the qdisc handle to add/delete filters. In that case, userspace has to pass block_index. Also, for dump of the filters, in case the block is shared in between at least 2 qdiscs, the each filter is dumped with tcm_ifindex value TCM_IFINDEX_MAGIC_BLOCK and tcm_parent set to block_index. That gives the user clear indication, that the filter belongs to a shared block and not only to one qdisc under which it is dumped. Suggested-by: David Ahern <[email protected]> Signed-off-by: Jiri Pirko <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Acked-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-01-17net: sched: keep track of offloaded filters and check tc offload featureJiri Pirko1-0/+18
During block bind, we need to check tc offload feature. If it is disabled yet still the block contains offloaded filters, forbid the bind. Also forbid to register callback for a block that already contains offloaded filters, as the play back is not supported now. For keeping track of offloaded filters there is a new counter introduced, alongside with couple of helpers called from cls_* code. These helpers set and clear TCA_CLS_FLAGS_IN_HW flag. Signed-off-by: Jiri Pirko <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Acked-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-01-17net: sched: remove classid and q fields from tcf_protoJiri Pirko1-2/+0
Both are no longer used, so remove them. Signed-off-by: Jiri Pirko <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Acked-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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