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, 440 insertions, 0 deletions

diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S
new file mode 100644
index 000000000..4dd2fd7ac
--- /dev/null
+++ b/arch/m68k/kernel/entry.S
@@ -0,0 +1,440 @@
+/* -*- mode: asm -*-
+ *
+ *  linux/arch/m68k/kernel/entry.S
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file README.legal in the main directory of this archive
+ * for more details.
+ *
+ * Linux/m68k support by Hamish Macdonald
+ *
+ * 68060 fixes by Jesper Skov
+ *
+ */
+
+/*
+ * entry.S  contains the system-call and fault low-level handling routines.
+ * This also contains the timer-interrupt handler, as well as all interrupts
+ * and faults that can result in a task-switch.
+ *
+ * NOTE: This code handles signal-recognition, which happens every time
+ * after a timer-interrupt and after each system call.
+ *
+ */
+
+/*
+ * 12/03/96 Jes: Currently we only support m68k single-cpu systems, so
+ *               all pointers that used to be 'current' are now entry
+ *               number 0 in the 'current_set' list.
+ *
+ *  6/05/00 RZ:	 addedd writeback completion after return from sighandler
+ *		 for 68040
+ */
+
+#include <linux/linkage.h>
+#include <asm/errno.h>
+#include <asm/setup.h>
+#include <asm/traps.h>
+#include <asm/unistd.h>
+#include <asm/asm-offsets.h>
+#include <asm/entry.h>
+
+.globl system_call, buserr, trap, resume
+.globl sys_call_table
+.globl __sys_fork, __sys_clone, __sys_vfork
+.globl bad_interrupt
+.globl auto_irqhandler_fixup
+.globl user_irqvec_fixup
+
+.text
+ENTRY(__sys_fork)
+	SAVE_SWITCH_STACK
+	jbsr	sys_fork
+	lea     %sp@(24),%sp
+	rts
+
+ENTRY(__sys_clone)
+	SAVE_SWITCH_STACK
+	pea	%sp@(SWITCH_STACK_SIZE)
+	jbsr	m68k_clone
+	lea     %sp@(28),%sp
+	rts
+
+ENTRY(__sys_vfork)
+	SAVE_SWITCH_STACK
+	jbsr	sys_vfork
+	lea     %sp@(24),%sp
+	rts
+
+ENTRY(__sys_clone3)
+	SAVE_SWITCH_STACK
+	pea	%sp@(SWITCH_STACK_SIZE)
+	jbsr	m68k_clone3
+	lea	%sp@(28),%sp
+	rts
+
+ENTRY(sys_sigreturn)
+	SAVE_SWITCH_STACK
+	movel	%sp,%a1			  	| switch_stack pointer
+	lea	%sp@(SWITCH_STACK_SIZE),%a0	| pt_regs pointer
+	lea     %sp@(-84),%sp			| leave a gap
+	movel	%a1,%sp@-
+	movel	%a0,%sp@-
+	jbsr	do_sigreturn
+	jra	1f				| shared with rt_sigreturn()
+
+ENTRY(sys_rt_sigreturn)
+	SAVE_SWITCH_STACK
+	movel	%sp,%a1			  	| switch_stack pointer
+	lea	%sp@(SWITCH_STACK_SIZE),%a0	| pt_regs pointer
+	lea     %sp@(-84),%sp			| leave a gap
+	movel	%a1,%sp@-
+	movel	%a0,%sp@-
+	| stack contents:
+	|   [original pt_regs address] [original switch_stack address]
+	|   [gap] [switch_stack] [pt_regs] [exception frame]
+	jbsr	do_rt_sigreturn
+
+1:
+	| stack contents now:
+	|   [original pt_regs address] [original switch_stack address]
+	|   [unused part of the gap] [moved switch_stack] [moved pt_regs]
+	|   [replacement exception frame]
+	| return value of do_{rt_,}sigreturn() points to moved switch_stack.
+
+	movel	%d0,%sp				| discard the leftover junk
+	RESTORE_SWITCH_STACK
+	| stack contents now is just [syscall return address] [pt_regs] [frame]
+	| return pt_regs.d0
+	movel	%sp@(PT_OFF_D0+4),%d0
+	rts
+
+ENTRY(buserr)
+	SAVE_ALL_INT
+	GET_CURRENT(%d0)
+	movel	%sp,%sp@-		| stack frame pointer argument
+	jbsr	buserr_c
+	addql	#4,%sp
+	jra	ret_from_exception
+
+ENTRY(trap)
+	SAVE_ALL_INT
+	GET_CURRENT(%d0)
+	movel	%sp,%sp@-		| stack frame pointer argument
+	jbsr	trap_c
+	addql	#4,%sp
+	jra	ret_from_exception
+
+	| After a fork we jump here directly from resume,
+	| so that %d1 contains the previous task
+	| schedule_tail now used regardless of CONFIG_SMP
+ENTRY(ret_from_fork)
+	movel	%d1,%sp@-
+	jsr	schedule_tail
+	addql	#4,%sp
+	jra	ret_from_exception
+
+ENTRY(ret_from_kernel_thread)
+	| a3 contains the kernel thread payload, d7 - its argument
+	movel	%d1,%sp@-
+	jsr	schedule_tail
+	movel	%d7,(%sp)
+	jsr	%a3@
+	addql	#4,%sp
+	jra	ret_from_exception
+
+#if defined(CONFIG_COLDFIRE) || !defined(CONFIG_MMU)
+
+#ifdef TRAP_DBG_INTERRUPT
+
+.globl dbginterrupt
+ENTRY(dbginterrupt)
+	SAVE_ALL_INT
+	GET_CURRENT(%d0)
+	movel	%sp,%sp@- 		/* stack frame pointer argument */
+	jsr	dbginterrupt_c
+	addql	#4,%sp
+	jra	ret_from_exception
+#endif
+
+ENTRY(reschedule)
+	/* save top of frame */
+	pea	%sp@
+	jbsr	set_esp0
+	addql	#4,%sp
+	pea	ret_from_exception
+	jmp	schedule
+
+ENTRY(ret_from_user_signal)
+	moveq #__NR_sigreturn,%d0
+	trap #0
+
+ENTRY(ret_from_user_rt_signal)
+	movel #__NR_rt_sigreturn,%d0
+	trap #0
+
+#else
+
+do_trace_entry:
+	movel	#-ENOSYS,%sp@(PT_OFF_D0)| needed for strace
+	subql	#4,%sp
+	SAVE_SWITCH_STACK
+	jbsr	syscall_trace_enter
+	RESTORE_SWITCH_STACK
+	addql	#4,%sp
+	addql	#1,%d0			| optimization for cmpil #-1,%d0
+	jeq	ret_from_syscall
+	movel	%sp@(PT_OFF_ORIG_D0),%d0
+	cmpl	#NR_syscalls,%d0
+	jcs	syscall
+	jra	ret_from_syscall
+badsys:
+	movel	#-ENOSYS,%sp@(PT_OFF_D0)
+	jra	ret_from_syscall
+
+do_trace_exit:
+	subql	#4,%sp
+	SAVE_SWITCH_STACK
+	jbsr	syscall_trace_leave
+	RESTORE_SWITCH_STACK
+	addql	#4,%sp
+	jra	.Lret_from_exception
+
+ENTRY(system_call)
+	SAVE_ALL_SYS
+
+	GET_CURRENT(%d1)
+	movel	%d1,%a1
+
+	| save top of frame
+	movel	%sp,%curptr@(TASK_THREAD+THREAD_ESP0)
+
+	| syscall trace?
+	tstb	%a1@(TINFO_FLAGS+2)
+	jmi	do_trace_entry
+	| seccomp filter active?
+	btst	#5,%a1@(TINFO_FLAGS+2)
+	bnes	do_trace_entry
+	cmpl	#NR_syscalls,%d0
+	jcc	badsys
+syscall:
+	jbsr	@(sys_call_table,%d0:l:4)@(0)
+	movel	%d0,%sp@(PT_OFF_D0)	| save the return value
+ret_from_syscall:
+	|oriw	#0x0700,%sr
+	movel	%curptr@(TASK_STACK),%a1
+	movew	%a1@(TINFO_FLAGS+2),%d0
+	jne	syscall_exit_work
+1:	RESTORE_ALL
+
+syscall_exit_work:
+	btst	#5,%sp@(PT_OFF_SR)	| check if returning to kernel
+	bnes	1b			| if so, skip resched, signals
+	lslw	#1,%d0
+	jcs	do_trace_exit
+	jmi	do_delayed_trace
+	lslw	#8,%d0
+	jne	do_signal_return
+	pea	resume_userspace
+	jra	schedule
+
+
+ENTRY(ret_from_exception)
+.Lret_from_exception:
+	btst	#5,%sp@(PT_OFF_SR)	| check if returning to kernel
+	bnes	1f			| if so, skip resched, signals
+	| only allow interrupts when we are really the last one on the
+	| kernel stack, otherwise stack overflow can occur during
+	| heavy interrupt load
+	andw	#ALLOWINT,%sr
+
+resume_userspace:
+	movel	%curptr@(TASK_STACK),%a1
+	moveb	%a1@(TINFO_FLAGS+3),%d0
+	jne	exit_work
+1:	RESTORE_ALL
+
+exit_work:
+	| save top of frame
+	movel	%sp,%curptr@(TASK_THREAD+THREAD_ESP0)
+	lslb	#1,%d0
+	jne	do_signal_return
+	pea	resume_userspace
+	jra	schedule
+
+
+do_signal_return:
+	|andw	#ALLOWINT,%sr
+	subql	#4,%sp			| dummy return address
+	SAVE_SWITCH_STACK
+	pea	%sp@(SWITCH_STACK_SIZE)
+	bsrl	do_notify_resume
+	addql	#4,%sp
+	RESTORE_SWITCH_STACK
+	addql	#4,%sp
+	jbra	resume_userspace
+
+do_delayed_trace:
+	bclr	#7,%sp@(PT_OFF_SR)	| clear trace bit in SR
+	pea	1			| send SIGTRAP
+	movel	%curptr,%sp@-
+	pea	LSIGTRAP
+	jbsr	send_sig
+	addql	#8,%sp
+	addql	#4,%sp
+	jbra	resume_userspace
+
+
+/* This is the main interrupt handler for autovector interrupts */
+
+ENTRY(auto_inthandler)
+	SAVE_ALL_INT
+	GET_CURRENT(%d0)
+					|  put exception # in d0
+	bfextu	%sp@(PT_OFF_FORMATVEC){#4,#10},%d0
+	subw	#VEC_SPUR,%d0
+
+	movel	%sp,%sp@-
+	movel	%d0,%sp@-		|  put vector # on stack
+auto_irqhandler_fixup = . + 2
+	jsr	do_IRQ			|  process the IRQ
+	addql	#8,%sp			|  pop parameters off stack
+	jra	ret_from_exception
+
+/* Handler for user defined interrupt vectors */
+
+ENTRY(user_inthandler)
+	SAVE_ALL_INT
+	GET_CURRENT(%d0)
+					|  put exception # in d0
+	bfextu	%sp@(PT_OFF_FORMATVEC){#4,#10},%d0
+user_irqvec_fixup = . + 2
+	subw	#VEC_USER,%d0
+
+	movel	%sp,%sp@-
+	movel	%d0,%sp@-		|  put vector # on stack
+	jsr	do_IRQ			|  process the IRQ
+	addql	#8,%sp			|  pop parameters off stack
+	jra	ret_from_exception
+
+/* Handler for uninitialized and spurious interrupts */
+
+ENTRY(bad_inthandler)
+	SAVE_ALL_INT
+	GET_CURRENT(%d0)
+
+	movel	%sp,%sp@-
+	jsr	handle_badint
+	addql	#4,%sp
+	jra	ret_from_exception
+
+resume:
+	/*
+	 * Beware - when entering resume, prev (the current task) is
+	 * in a0, next (the new task) is in a1,so don't change these
+	 * registers until their contents are no longer needed.
+	 */
+
+	/* save sr */
+	movew	%sr,%a0@(TASK_THREAD+THREAD_SR)
+
+	/* save fs (sfc,%dfc) (may be pointing to kernel memory) */
+	movec	%sfc,%d0
+	movew	%d0,%a0@(TASK_THREAD+THREAD_FC)
+
+	/* save usp */
+	/* it is better to use a movel here instead of a movew 8*) */
+	movec	%usp,%d0
+	movel	%d0,%a0@(TASK_THREAD+THREAD_USP)
+
+	/* save non-scratch registers on stack */
+	SAVE_SWITCH_STACK
+
+	/* save current kernel stack pointer */
+	movel	%sp,%a0@(TASK_THREAD+THREAD_KSP)
+
+	/* save floating point context */
+#ifndef CONFIG_M68KFPU_EMU_ONLY
+#ifdef CONFIG_M68KFPU_EMU
+	tstl	m68k_fputype
+	jeq	3f
+#endif
+	fsave	%a0@(TASK_THREAD+THREAD_FPSTATE)
+
+#if defined(CONFIG_M68060)
+#if !defined(CPU_M68060_ONLY)
+	btst	#3,m68k_cputype+3
+	beqs	1f
+#endif
+	/* The 060 FPU keeps status in bits 15-8 of the first longword */
+	tstb	%a0@(TASK_THREAD+THREAD_FPSTATE+2)
+	jeq	3f
+#if !defined(CPU_M68060_ONLY)
+	jra	2f
+#endif
+#endif /* CONFIG_M68060 */
+#if !defined(CPU_M68060_ONLY)
+1:	tstb	%a0@(TASK_THREAD+THREAD_FPSTATE)
+	jeq	3f
+#endif
+2:	fmovemx	%fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG)
+	fmoveml	%fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL)
+3:
+#endif	/* CONFIG_M68KFPU_EMU_ONLY */
+	/* Return previous task in %d1 */
+	movel	%curptr,%d1
+
+	/* switch to new task (a1 contains new task) */
+	movel	%a1,%curptr
+
+	/* restore floating point context */
+#ifndef CONFIG_M68KFPU_EMU_ONLY
+#ifdef CONFIG_M68KFPU_EMU
+	tstl	m68k_fputype
+	jeq	4f
+#endif
+#if defined(CONFIG_M68060)
+#if !defined(CPU_M68060_ONLY)
+	btst	#3,m68k_cputype+3
+	beqs	1f
+#endif
+	/* The 060 FPU keeps status in bits 15-8 of the first longword */
+	tstb	%a1@(TASK_THREAD+THREAD_FPSTATE+2)
+	jeq	3f
+#if !defined(CPU_M68060_ONLY)
+	jra	2f
+#endif
+#endif /* CONFIG_M68060 */
+#if !defined(CPU_M68060_ONLY)
+1:	tstb	%a1@(TASK_THREAD+THREAD_FPSTATE)
+	jeq	3f
+#endif
+2:	fmovemx	%a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7
+	fmoveml	%a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar
+3:	frestore %a1@(TASK_THREAD+THREAD_FPSTATE)
+4:
+#endif	/* CONFIG_M68KFPU_EMU_ONLY */
+
+	/* restore the kernel stack pointer */
+	movel	%a1@(TASK_THREAD+THREAD_KSP),%sp
+
+	/* restore non-scratch registers */
+	RESTORE_SWITCH_STACK
+
+	/* restore user stack pointer */
+	movel	%a1@(TASK_THREAD+THREAD_USP),%a0
+	movel	%a0,%usp
+
+	/* restore fs (sfc,%dfc) */
+	movew	%a1@(TASK_THREAD+THREAD_FC),%a0
+	movec	%a0,%sfc
+	movec	%a0,%dfc
+
+	/* restore status register */
+	movew	%a1@(TASK_THREAD+THREAD_SR),%sr
+
+	rts
+
+#endif /* CONFIG_MMU && !CONFIG_COLDFIRE */