From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- arch/ia64/kernel/relocate_kernel.S | 321 +++++++++++++++++++++++++++++++++++++ 1 file changed, 321 insertions(+) create mode 100644 arch/ia64/kernel/relocate_kernel.S (limited to 'arch/ia64/kernel/relocate_kernel.S') diff --git a/arch/ia64/kernel/relocate_kernel.S b/arch/ia64/kernel/relocate_kernel.S new file mode 100644 index 000000000..527a7b896 --- /dev/null +++ b/arch/ia64/kernel/relocate_kernel.S @@ -0,0 +1,321 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * arch/ia64/kernel/relocate_kernel.S + * + * Relocate kexec'able kernel and start it + * + * Copyright (C) 2005 Hewlett-Packard Development Company, L.P. + * Copyright (C) 2005 Khalid Aziz + * Copyright (C) 2005 Intel Corp, Zou Nan hai + */ +#include +#include +#include +#include +#include + + /* Must be relocatable PIC code callable as a C function + */ +GLOBAL_ENTRY(relocate_new_kernel) + .prologue + alloc r31=ar.pfs,4,0,0,0 + .body +.reloc_entry: +{ + rsm psr.i| psr.ic + mov r2=ip +} + ;; +{ + flushrs // must be first insn in group + srlz.i +} + ;; + dep r2=0,r2,61,3 //to physical address + ;; + //first switch to physical mode + add r3=1f-.reloc_entry, r2 + movl r16 = IA64_PSR_AC|IA64_PSR_BN|IA64_PSR_IC + mov ar.rsc=0 // put RSE in enforced lazy mode + ;; + add sp=(memory_stack_end - 16 - .reloc_entry),r2 + add r8=(register_stack - .reloc_entry),r2 + ;; + mov r18=ar.rnat + mov ar.bspstore=r8 + ;; + mov cr.ipsr=r16 + mov cr.iip=r3 + mov cr.ifs=r0 + srlz.i + ;; + mov ar.rnat=r18 + rfi // note: this unmask MCA/INIT (psr.mc) + ;; +1: + //physical mode code begin + mov b6=in1 + dep r28=0,in2,61,3 //to physical address + + // purge all TC entries +#define O(member) IA64_CPUINFO_##member##_OFFSET + GET_THIS_PADDR(r2, ia64_cpu_info) // load phys addr of cpu_info into r2 + ;; + addl r17=O(PTCE_STRIDE),r2 + addl r2=O(PTCE_BASE),r2 + ;; + ld8 r18=[r2],(O(PTCE_COUNT)-O(PTCE_BASE));; // r18=ptce_base + ld4 r19=[r2],4 // r19=ptce_count[0] + ld4 r21=[r17],4 // r21=ptce_stride[0] + ;; + ld4 r20=[r2] // r20=ptce_count[1] + ld4 r22=[r17] // r22=ptce_stride[1] + mov r24=r0 + ;; + adds r20=-1,r20 + ;; +#undef O +2: + cmp.ltu p6,p7=r24,r19 +(p7) br.cond.dpnt.few 4f + mov ar.lc=r20 +3: + ptc.e r18 + ;; + add r18=r22,r18 + br.cloop.sptk.few 3b + ;; + add r18=r21,r18 + add r24=1,r24 + ;; + br.sptk.few 2b +4: + srlz.i + ;; + // purge TR entry for kernel text and data + movl r16=KERNEL_START + mov r18=KERNEL_TR_PAGE_SHIFT<<2 + ;; + ptr.i r16, r18 + ptr.d r16, r18 + ;; + srlz.i + ;; + + // purge TR entry for pal code + mov r16=in3 + mov r18=IA64_GRANULE_SHIFT<<2 + ;; + ptr.i r16,r18 + ;; + srlz.i + ;; + + // purge TR entry for stack + mov r16=IA64_KR(CURRENT_STACK) + ;; + shl r16=r16,IA64_GRANULE_SHIFT + movl r19=PAGE_OFFSET + ;; + add r16=r19,r16 + mov r18=IA64_GRANULE_SHIFT<<2 + ;; + ptr.d r16,r18 + ;; + srlz.i + ;; + + //copy segments + movl r16=PAGE_MASK + mov r30=in0 // in0 is page_list + br.sptk.few .dest_page + ;; +.loop: + ld8 r30=[in0], 8;; +.dest_page: + tbit.z p0, p6=r30, 0;; // 0x1 dest page +(p6) and r17=r30, r16 +(p6) br.cond.sptk.few .loop;; + + tbit.z p0, p6=r30, 1;; // 0x2 indirect page +(p6) and in0=r30, r16 +(p6) br.cond.sptk.few .loop;; + + tbit.z p0, p6=r30, 2;; // 0x4 end flag +(p6) br.cond.sptk.few .end_loop;; + + tbit.z p6, p0=r30, 3;; // 0x8 source page +(p6) br.cond.sptk.few .loop + + and r18=r30, r16 + + // simple copy page, may optimize later + movl r14=PAGE_SIZE/8 - 1;; + mov ar.lc=r14;; +1: + ld8 r14=[r18], 8;; + st8 [r17]=r14;; + fc.i r17 + add r17=8, r17 + br.ctop.sptk.few 1b + br.sptk.few .loop + ;; + +.end_loop: + sync.i // for fc.i + ;; + srlz.i + ;; + srlz.d + ;; + br.call.sptk.many b0=b6;; + +.align 32 +memory_stack: + .fill 8192, 1, 0 +memory_stack_end: +register_stack: + .fill 8192, 1, 0 +register_stack_end: +relocate_new_kernel_end: +END(relocate_new_kernel) + +.global relocate_new_kernel_size +relocate_new_kernel_size: + data8 relocate_new_kernel_end - relocate_new_kernel + +GLOBAL_ENTRY(ia64_dump_cpu_regs) + .prologue + alloc loc0=ar.pfs,1,2,0,0 + .body + mov ar.rsc=0 // put RSE in enforced lazy mode + add loc1=4*8, in0 // save r4 and r5 first + ;; +{ + flushrs // flush dirty regs to backing store + srlz.i +} + st8 [loc1]=r4, 8 + ;; + st8 [loc1]=r5, 8 + ;; + add loc1=32*8, in0 + mov r4=ar.rnat + ;; + st8 [in0]=r0, 8 // r0 + st8 [loc1]=r4, 8 // rnat + mov r5=pr + ;; + st8 [in0]=r1, 8 // r1 + st8 [loc1]=r5, 8 // pr + mov r4=b0 + ;; + st8 [in0]=r2, 8 // r2 + st8 [loc1]=r4, 8 // b0 + mov r5=b1; + ;; + st8 [in0]=r3, 24 // r3 + st8 [loc1]=r5, 8 // b1 + mov r4=b2 + ;; + st8 [in0]=r6, 8 // r6 + st8 [loc1]=r4, 8 // b2 + mov r5=b3 + ;; + st8 [in0]=r7, 8 // r7 + st8 [loc1]=r5, 8 // b3 + mov r4=b4 + ;; + st8 [in0]=r8, 8 // r8 + st8 [loc1]=r4, 8 // b4 + mov r5=b5 + ;; + st8 [in0]=r9, 8 // r9 + st8 [loc1]=r5, 8 // b5 + mov r4=b6 + ;; + st8 [in0]=r10, 8 // r10 + st8 [loc1]=r5, 8 // b6 + mov r5=b7 + ;; + st8 [in0]=r11, 8 // r11 + st8 [loc1]=r5, 8 // b7 + mov r4=b0 + ;; + st8 [in0]=r12, 8 // r12 + st8 [loc1]=r4, 8 // ip + mov r5=loc0 + ;; + st8 [in0]=r13, 8 // r13 + extr.u r5=r5, 0, 38 // ar.pfs.pfm + mov r4=r0 // user mask + ;; + st8 [in0]=r14, 8 // r14 + st8 [loc1]=r5, 8 // cfm + ;; + st8 [in0]=r15, 8 // r15 + st8 [loc1]=r4, 8 // user mask + mov r5=ar.rsc + ;; + st8 [in0]=r16, 8 // r16 + st8 [loc1]=r5, 8 // ar.rsc + mov r4=ar.bsp + ;; + st8 [in0]=r17, 8 // r17 + st8 [loc1]=r4, 8 // ar.bsp + mov r5=ar.bspstore + ;; + st8 [in0]=r18, 8 // r18 + st8 [loc1]=r5, 8 // ar.bspstore + mov r4=ar.rnat + ;; + st8 [in0]=r19, 8 // r19 + st8 [loc1]=r4, 8 // ar.rnat + mov r5=ar.ccv + ;; + st8 [in0]=r20, 8 // r20 + st8 [loc1]=r5, 8 // ar.ccv + mov r4=ar.unat + ;; + st8 [in0]=r21, 8 // r21 + st8 [loc1]=r4, 8 // ar.unat + mov r5 = ar.fpsr + ;; + st8 [in0]=r22, 8 // r22 + st8 [loc1]=r5, 8 // ar.fpsr + mov r4 = ar.unat + ;; + st8 [in0]=r23, 8 // r23 + st8 [loc1]=r4, 8 // unat + mov r5 = ar.fpsr + ;; + st8 [in0]=r24, 8 // r24 + st8 [loc1]=r5, 8 // fpsr + mov r4 = ar.pfs + ;; + st8 [in0]=r25, 8 // r25 + st8 [loc1]=r4, 8 // ar.pfs + mov r5 = ar.lc + ;; + st8 [in0]=r26, 8 // r26 + st8 [loc1]=r5, 8 // ar.lc + mov r4 = ar.ec + ;; + st8 [in0]=r27, 8 // r27 + st8 [loc1]=r4, 8 // ar.ec + mov r5 = ar.csd + ;; + st8 [in0]=r28, 8 // r28 + st8 [loc1]=r5, 8 // ar.csd + mov r4 = ar.ssd + ;; + st8 [in0]=r29, 8 // r29 + st8 [loc1]=r4, 8 // ar.ssd + ;; + st8 [in0]=r30, 8 // r30 + ;; + st8 [in0]=r31, 8 // r31 + mov ar.pfs=loc0 + ;; + br.ret.sptk.many rp +END(ia64_dump_cpu_regs) -- cgit v1.2.3