Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 372 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
new file mode 100644
index 000000000..01974b82d
--- /dev/null
+++ b/drivers/gpu/drm/i915/Makefile
@@ -0,0 +1,372 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the drm device driver.  This driver provides support for the
+# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
+
+# Add a set of useful warning flags and enable -Werror for CI to prevent
+# trivial mistakes from creeping in. We have to do this piecemeal as we reject
+# any patch that isn't warning clean, so turning on -Wall -Wextra (or W=1) we
+# need to filter out dubious warnings.  Still it is our interest
+# to keep running locally with W=1 C=1 until we are completely clean.
+#
+# Note the danger in using -Wall -Wextra is that when CI updates gcc we
+# will most likely get a sudden build breakage... Hopefully we will fix
+# new warnings before CI updates!
+subdir-ccflags-y := -Wall -Wextra
+subdir-ccflags-y += -Wno-format-security
+subdir-ccflags-y += -Wno-unused-parameter
+subdir-ccflags-y += -Wno-type-limits
+subdir-ccflags-y += -Wno-missing-field-initializers
+subdir-ccflags-y += -Wno-sign-compare
+subdir-ccflags-y += -Wno-shift-negative-value
+subdir-ccflags-y += $(call cc-disable-warning, unused-but-set-variable)
+subdir-ccflags-y += $(call cc-disable-warning, frame-address)
+subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
+
+# Fine grained warnings disable
+CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init)
+CFLAGS_display/intel_fbdev.o = $(call cc-disable-warning, override-init)
+
+subdir-ccflags-y += -I$(srctree)/$(src)
+
+# Please keep these build lists sorted!
+
+# core driver code
+i915-y += i915_driver.o \
+	  i915_drm_client.o \
+	  i915_config.o \
+	  i915_getparam.o \
+	  i915_ioctl.o \
+	  i915_irq.o \
+	  i915_mitigations.o \
+	  i915_module.o \
+	  i915_params.o \
+	  i915_pci.o \
+	  i915_scatterlist.o \
+	  i915_suspend.o \
+	  i915_switcheroo.o \
+	  i915_sysfs.o \
+	  i915_utils.o \
+	  intel_device_info.o \
+	  intel_dram.o \
+	  intel_memory_region.o \
+	  intel_pch.o \
+	  intel_pcode.o \
+	  intel_pm.o \
+	  intel_region_ttm.o \
+	  intel_runtime_pm.o \
+	  intel_sbi.o \
+	  intel_step.o \
+	  intel_uncore.o \
+	  intel_wakeref.o \
+	  vlv_sideband.o \
+	  vlv_suspend.o
+
+# core library code
+i915-y += \
+	i915_memcpy.o \
+	i915_mm.o \
+	i915_sw_fence.o \
+	i915_sw_fence_work.o \
+	i915_syncmap.o \
+	i915_user_extensions.o
+
+i915-$(CONFIG_COMPAT)   += i915_ioc32.o
+i915-$(CONFIG_DEBUG_FS) += \
+	i915_debugfs.o \
+	i915_debugfs_params.o \
+	display/intel_display_debugfs.o \
+	display/intel_pipe_crc.o
+i915-$(CONFIG_PERF_EVENTS) += i915_pmu.o
+
+# "Graphics Technology" (aka we talk to the gpu)
+gt-y += \
+	gt/gen2_engine_cs.o \
+	gt/gen6_engine_cs.o \
+	gt/gen6_ppgtt.o \
+	gt/gen7_renderclear.o \
+	gt/gen8_engine_cs.o \
+	gt/gen8_ppgtt.o \
+	gt/intel_breadcrumbs.o \
+	gt/intel_context.o \
+	gt/intel_context_sseu.o \
+	gt/intel_engine_cs.o \
+	gt/intel_engine_heartbeat.o \
+	gt/intel_engine_pm.o \
+	gt/intel_engine_user.o \
+	gt/intel_execlists_submission.o \
+	gt/intel_ggtt.o \
+	gt/intel_ggtt_fencing.o \
+	gt/intel_gt.o \
+	gt/intel_gt_buffer_pool.o \
+	gt/intel_gt_clock_utils.o \
+	gt/intel_gt_debugfs.o \
+	gt/intel_gt_engines_debugfs.o \
+	gt/intel_gt_irq.o \
+	gt/intel_gt_mcr.o \
+	gt/intel_gt_pm.o \
+	gt/intel_gt_pm_debugfs.o \
+	gt/intel_gt_pm_irq.o \
+	gt/intel_gt_requests.o \
+	gt/intel_gt_sysfs.o \
+	gt/intel_gt_sysfs_pm.o \
+	gt/intel_gtt.o \
+	gt/intel_llc.o \
+	gt/intel_lrc.o \
+	gt/intel_migrate.o \
+	gt/intel_mocs.o \
+	gt/intel_ppgtt.o \
+	gt/intel_rc6.o \
+	gt/intel_region_lmem.o \
+	gt/intel_renderstate.o \
+	gt/intel_reset.o \
+	gt/intel_ring.o \
+	gt/intel_ring_submission.o \
+	gt/intel_rps.o \
+	gt/intel_sa_media.o \
+	gt/intel_sseu.o \
+	gt/intel_sseu_debugfs.o \
+	gt/intel_timeline.o \
+	gt/intel_wopcm.o \
+	gt/intel_workarounds.o \
+	gt/shmem_utils.o \
+	gt/sysfs_engines.o
+
+# x86 intel-gtt module support
+gt-$(CONFIG_X86) += gt/intel_ggtt_gmch.o
+# autogenerated null render state
+gt-y += \
+	gt/gen6_renderstate.o \
+	gt/gen7_renderstate.o \
+	gt/gen8_renderstate.o \
+	gt/gen9_renderstate.o
+i915-y += $(gt-y)
+
+# GEM (Graphics Execution Management) code
+gem-y += \
+	gem/i915_gem_busy.o \
+	gem/i915_gem_clflush.o \
+	gem/i915_gem_context.o \
+	gem/i915_gem_create.o \
+	gem/i915_gem_dmabuf.o \
+	gem/i915_gem_domain.o \
+	gem/i915_gem_execbuffer.o \
+	gem/i915_gem_internal.o \
+	gem/i915_gem_object.o \
+	gem/i915_gem_lmem.o \
+	gem/i915_gem_mman.o \
+	gem/i915_gem_pages.o \
+	gem/i915_gem_phys.o \
+	gem/i915_gem_pm.o \
+	gem/i915_gem_region.o \
+	gem/i915_gem_shmem.o \
+	gem/i915_gem_shrinker.o \
+	gem/i915_gem_stolen.o \
+	gem/i915_gem_throttle.o \
+	gem/i915_gem_tiling.o \
+	gem/i915_gem_ttm.o \
+	gem/i915_gem_ttm_move.o \
+	gem/i915_gem_ttm_pm.o \
+	gem/i915_gem_userptr.o \
+	gem/i915_gem_wait.o \
+	gem/i915_gemfs.o
+i915-y += \
+	  $(gem-y) \
+	  i915_active.o \
+	  i915_cmd_parser.o \
+	  i915_deps.o \
+	  i915_gem_evict.o \
+	  i915_gem_gtt.o \
+	  i915_gem_ww.o \
+	  i915_gem.o \
+	  i915_query.o \
+	  i915_request.o \
+	  i915_scheduler.o \
+	  i915_trace_points.o \
+	  i915_ttm_buddy_manager.o \
+	  i915_vma.o \
+	  i915_vma_resource.o
+
+# general-purpose microcontroller (GuC) support
+i915-y += gt/uc/intel_uc.o \
+	  gt/uc/intel_uc_debugfs.o \
+	  gt/uc/intel_uc_fw.o \
+	  gt/uc/intel_guc.o \
+	  gt/uc/intel_guc_ads.o \
+	  gt/uc/intel_guc_capture.o \
+	  gt/uc/intel_guc_ct.o \
+	  gt/uc/intel_guc_debugfs.o \
+	  gt/uc/intel_guc_fw.o \
+	  gt/uc/intel_guc_hwconfig.o \
+	  gt/uc/intel_guc_log.o \
+	  gt/uc/intel_guc_log_debugfs.o \
+	  gt/uc/intel_guc_rc.o \
+	  gt/uc/intel_guc_slpc.o \
+	  gt/uc/intel_guc_submission.o \
+	  gt/uc/intel_huc.o \
+	  gt/uc/intel_huc_debugfs.o \
+	  gt/uc/intel_huc_fw.o
+
+# graphics system controller (GSC) support
+i915-y += gt/intel_gsc.o
+
+# graphics hardware monitoring (HWMON) support
+i915-$(CONFIG_HWMON) += i915_hwmon.o
+
+# modesetting core code
+i915-y += \
+	display/hsw_ips.o \
+	display/intel_atomic.o \
+	display/intel_atomic_plane.o \
+	display/intel_audio.o \
+	display/intel_bios.o \
+	display/intel_bw.o \
+	display/intel_cdclk.o \
+	display/intel_color.o \
+	display/intel_combo_phy.o \
+	display/intel_connector.o \
+	display/intel_crtc.o \
+	display/intel_crtc_state_dump.o \
+	display/intel_cursor.o \
+	display/intel_display.o \
+	display/intel_display_power.o \
+	display/intel_display_power_map.o \
+	display/intel_display_power_well.o \
+	display/intel_dmc.o \
+	display/intel_dpio_phy.o \
+	display/intel_dpll.o \
+	display/intel_dpll_mgr.o \
+	display/intel_dpt.o \
+	display/intel_drrs.o \
+	display/intel_dsb.o \
+	display/intel_fb.o \
+	display/intel_fb_pin.o \
+	display/intel_fbc.o \
+	display/intel_fdi.o \
+	display/intel_fifo_underrun.o \
+	display/intel_frontbuffer.o \
+	display/intel_global_state.o \
+	display/intel_hdcp.o \
+	display/intel_hotplug.o \
+	display/intel_hti.o \
+	display/intel_lpe_audio.o \
+	display/intel_modeset_verify.o \
+	display/intel_modeset_setup.o \
+	display/intel_overlay.o \
+	display/intel_pch_display.o \
+	display/intel_pch_refclk.o \
+	display/intel_plane_initial.o \
+	display/intel_psr.o \
+	display/intel_quirks.o \
+	display/intel_sprite.o \
+	display/intel_tc.o \
+	display/intel_vga.o \
+	display/i9xx_plane.o \
+	display/skl_scaler.o \
+	display/skl_universal_plane.o \
+	display/skl_watermark.o
+i915-$(CONFIG_ACPI) += \
+	display/intel_acpi.o \
+	display/intel_opregion.o
+i915-$(CONFIG_DRM_FBDEV_EMULATION) += \
+	display/intel_fbdev.o
+
+# modesetting output/encoder code
+i915-y += \
+	display/dvo_ch7017.o \
+	display/dvo_ch7xxx.o \
+	display/dvo_ivch.o \
+	display/dvo_ns2501.o \
+	display/dvo_sil164.o \
+	display/dvo_tfp410.o \
+	display/g4x_dp.o \
+	display/g4x_hdmi.o \
+	display/icl_dsi.o \
+	display/intel_backlight.o \
+	display/intel_crt.o \
+	display/intel_ddi.o \
+	display/intel_ddi_buf_trans.o \
+	display/intel_display_trace.o \
+	display/intel_dkl_phy.o \
+	display/intel_dp.o \
+	display/intel_dp_aux.o \
+	display/intel_dp_aux_backlight.o \
+	display/intel_dp_hdcp.o \
+	display/intel_dp_link_training.o \
+	display/intel_dp_mst.o \
+	display/intel_dsi.o \
+	display/intel_dsi_dcs_backlight.o \
+	display/intel_dsi_vbt.o \
+	display/intel_dvo.o \
+	display/intel_gmbus.o \
+	display/intel_hdmi.o \
+	display/intel_lspcon.o \
+	display/intel_lvds.o \
+	display/intel_panel.o \
+	display/intel_pps.o \
+	display/intel_qp_tables.o \
+	display/intel_sdvo.o \
+	display/intel_snps_phy.o \
+	display/intel_tv.o \
+	display/intel_vdsc.o \
+	display/intel_vrr.o \
+	display/vlv_dsi.o \
+	display/vlv_dsi_pll.o
+
+i915-y += i915_perf.o
+
+# Protected execution platform (PXP) support. Base support is required for HuC
+i915-y += \
+	pxp/intel_pxp.o \
+	pxp/intel_pxp_tee.o \
+	pxp/intel_pxp_huc.o
+
+i915-$(CONFIG_DRM_I915_PXP) += \
+	pxp/intel_pxp_cmd.o \
+	pxp/intel_pxp_debugfs.o \
+	pxp/intel_pxp_irq.o \
+	pxp/intel_pxp_pm.o \
+	pxp/intel_pxp_session.o
+
+# Post-mortem debug and GPU hang state capture
+i915-$(CONFIG_DRM_I915_CAPTURE_ERROR) += i915_gpu_error.o
+i915-$(CONFIG_DRM_I915_SELFTEST) += \
+	gem/selftests/i915_gem_client_blt.o \
+	gem/selftests/igt_gem_utils.o \
+	selftests/intel_scheduler_helpers.o \
+	selftests/i915_random.o \
+	selftests/i915_selftest.o \
+	selftests/igt_atomic.o \
+	selftests/igt_flush_test.o \
+	selftests/igt_live_test.o \
+	selftests/igt_mmap.o \
+	selftests/igt_reset.o \
+	selftests/igt_spinner.o \
+	selftests/librapl.o
+
+# virtual gpu code
+i915-y += i915_vgpu.o
+
+i915-$(CONFIG_DRM_I915_GVT) += \
+	intel_gvt.o \
+	intel_gvt_mmio_table.o
+include $(src)/gvt/Makefile
+
+obj-$(CONFIG_DRM_I915) += i915.o
+obj-$(CONFIG_DRM_I915_GVT_KVMGT) += kvmgt.o
+
+# header test
+
+# exclude some broken headers from the test coverage
+no-header-test := \
+	display/intel_vbt_defs.h
+
+always-$(CONFIG_DRM_I915_WERROR) += \
+	$(patsubst %.h,%.hdrtest, $(filter-out $(no-header-test), \
+		$(shell cd $(srctree)/$(src) && find * -name '*.h')))
+
+quiet_cmd_hdrtest = HDRTEST $(patsubst %.hdrtest,%.h,$@)
+      cmd_hdrtest = $(CC) $(filter-out $(CFLAGS_GCOV), $(c_flags)) -S -o /dev/null -x c /dev/null -include $<; touch $@
+
+$(obj)/%.hdrtest: $(src)/%.h FORCE
+	$(call if_changed_dep,hdrtest)