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2021-07-02Merge tag 'powerpc-5.14-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - A big series refactoring parts of our KVM code, and converting some to C. - Support for ARCH_HAS_SET_MEMORY, and ARCH_HAS_STRICT_MODULE_RWX on some CPUs. - Support for the Microwatt soft-core. - Optimisations to our interrupt return path on 64-bit. - Support for userspace access to the NX GZIP accelerator on PowerVM on Power10. - Enable KUAP and KUEP by default on 32-bit Book3S CPUs. - Other smaller features, fixes & cleanups. Thanks to: Andy Shevchenko, Aneesh Kumar K.V, Arnd Bergmann, Athira Rajeev, Baokun Li, Benjamin Herrenschmidt, Bharata B Rao, Christophe Leroy, Daniel Axtens, Daniel Henrique Barboza, Finn Thain, Geoff Levand, Haren Myneni, Jason Wang, Jiapeng Chong, Joel Stanley, Jordan Niethe, Kajol Jain, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nick Desaulniers, Paul Mackerras, Russell Currey, Sathvika Vasireddy, Shaokun Zhang, Stephen Rothwell, Sudeep Holla, Suraj Jitindar Singh, Tom Rix, Vaibhav Jain, YueHaibing, Zhang Jianhua, and Zhen Lei. * tag 'powerpc-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (218 commits) powerpc: Only build restart_table.c for 64s powerpc/64s: move ret_from_fork etc above __end_soft_masked powerpc/64s/interrupt: clean up interrupt return labels powerpc/64/interrupt: add missing kprobe annotations on interrupt exit symbols powerpc/64: enable MSR[EE] in irq replay pt_regs powerpc/64s/interrupt: preserve regs->softe for NMI interrupts powerpc/64s: add a table of implicit soft-masked addresses powerpc/64e: remove implicit soft-masking and interrupt exit restart logic powerpc/64e: fix CONFIG_RELOCATABLE build warnings powerpc/64s: fix hash page fault interrupt handler powerpc/4xx: Fix setup_kuep() on SMP powerpc/32s: Fix setup_{kuap/kuep}() on SMP powerpc/interrupt: Use names in check_return_regs_valid() powerpc/interrupt: Also use exit_must_hard_disable() on PPC32 powerpc/sysfs: Replace sizeof(arr)/sizeof(arr[0]) with ARRAY_SIZE powerpc/ptrace: Refactor regs_set_return_{msr/ip} powerpc/ptrace: Move set_return_regs_changed() before regs_set_return_{msr/ip} powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi() powerpc/pseries/vas: Include irqdomain.h powerpc: mark local variables around longjmp as volatile ...
2021-06-21powerpc/boot: Add a boot wrapper for MicrowattJoel Stanley
This allows microwatt's kernel to be built with an embedded device tree. Load to arch/powerpc/boot/dtbImage.microwatt to 0x500000: mw_debug -b fpga stop load arch/powerpc/boot/dtbImage.microwatt 500000 start Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YMwX19wym3kQ7guu@thinks.paulus.ozlabs.org
2021-06-21powerpc/boot: Fixup device-tree on little endianBenjamin Herrenschmidt
This fixes the core devtree.c functions and the ns16550 UART backend. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Acked-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YMwXrPT8nc4YUdJ9@thinks.paulus.ozlabs.org
2021-06-21powerpc/microwatt: Use standard 16550 UART for consoleBenjamin Herrenschmidt
This adds support to the Microwatt platform to use the standard 16550-style UART which available in the standalone Microwatt FPGA. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YMwXGCTzedpQje7r@thinks.paulus.ozlabs.org
2021-06-21powerpc/xics: Add a native ICS backend for microwattBenjamin Herrenschmidt
This is a simple native ICS backend that matches the layout of the Microwatt implementation of ICS. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> [mpe: Add empty ics_native_init() to unbreak non-microwatt builds] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> fixup-ics Link: https://lore.kernel.org/r/YMwW8cxrwB2W5EUN@thinks.paulus.ozlabs.org
2021-06-21powerpc/microwatt: Populate platform bus from device-treeBenjamin Herrenschmidt
Just like any other embedded platform. Add an empty soc node. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YMwWx98+PMibZq/G@thinks.paulus.ozlabs.org
2021-06-21powerpc: Add Microwatt device treePaul Mackerras
Microwatt currently runs with MSR[HV] = 0, hence the usable-privilege properties don't have bit 2 (for HV support) set, and we need the /chosen/ibm,architecture-vec-5 property. Signed-off-by: Paul Mackerras <paulus@ozlabs.org> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/YMwWkPcXlGDSQ9Q3@thinks.paulus.ozlabs.org
2021-06-21powerpc/boot: add zImage.lds to targetsNicholas Piggin
This prevents spurious rebuilds of the lds and then wrappers. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210611111104.1058991-1-npiggin@gmail.com
2021-06-10powerpc/ps3: Re-align DTB in imageGeoff Levand
Change the PS3 linker script to align the DTB at 8 bytes, the same alignment as that of the of the 'generic' powerpc linker script. Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/245897ed65e402686a4b114ba618e935cb5c6506.1622822173.git.geoff@infradead.org
2021-05-27powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllersChris Packham
The i2c controllers on the P1010 have an erratum where the documented scheme for i2c bus recovery will not work (A-004447). A different mechanism is needed which is documented in the P1010 Chip Errata Rev L. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2021-05-27powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllersChris Packham
The i2c controllers on the P2040/P2041 have an erratum where the documented scheme for i2c bus recovery will not work (A-004447). A different mechanism is needed which is documented in the P2040 Chip Errata Rev Q (latest available at the time of writing). Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2021-05-17powerpc/boot: Fix a typo in partial_decompress() commentZhang Jianhua
outbuf is the output buffer, output_size is the size of the output buffer. Signed-off-by: Zhang Jianhua <chris.zjh@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210510075134.252978-1-chris.zjh@huawei.com
2021-05-02kbuild: replace LANG=C with LC_ALL=CMasahiro Yamada
LANG gives a weak default to each LC_* in case it is not explicitly defined. LC_ALL, if set, overrides all other LC_* variables. LANG < LC_CTYPE, LC_COLLATE, LC_MONETARY, LC_NUMERIC, ... < LC_ALL This is why documentation such as [1] suggests to set LC_ALL in build scripts to get the deterministic result. LANG=C is not strong enough to override LC_* that may be set by end users. [1]: https://reproducible-builds.org/docs/locales/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Matthias Maennich <maennich@google.com> Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net> (mptcp) Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-29Merge tag 'net-next-5.13' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - bpf: - allow bpf programs calling kernel functions (initially to reuse TCP congestion control implementations) - enable task local storage for tracing programs - remove the need to store per-task state in hash maps, and allow tracing programs access to task local storage previously added for BPF_LSM - add bpf_for_each_map_elem() helper, allowing programs to walk all map elements in a more robust and easier to verify fashion - sockmap: support UDP and cross-protocol BPF_SK_SKB_VERDICT redirection - lpm: add support for batched ops in LPM trie - add BTF_KIND_FLOAT support - mostly to allow use of BTF on s390 which has floats in its headers files - improve BPF syscall documentation and extend the use of kdoc parsing scripts we already employ for bpf-helpers - libbpf, bpftool: support static linking of BPF ELF files - improve support for encapsulation of L2 packets - xdp: restructure redirect actions to avoid a runtime lookup, improving performance by 4-8% in microbenchmarks - xsk: build skb by page (aka generic zerocopy xmit) - improve performance of software AF_XDP path by 33% for devices which don't need headers in the linear skb part (e.g. virtio) - nexthop: resilient next-hop groups - improve path stability on next-hops group changes (incl. offload for mlxsw) - ipv6: segment routing: add support for IPv4 decapsulation - icmp: add support for RFC 8335 extended PROBE messages - inet: use bigger hash table for IP ID generation - tcp: deal better with delayed TX completions - make sure we don't give up on fast TCP retransmissions only because driver is slow in reporting that it completed transmitting the original - tcp: reorder tcp_congestion_ops for better cache locality - mptcp: - add sockopt support for common TCP options - add support for common TCP msg flags - include multiple address ids in RM_ADDR - add reset option support for resetting one subflow - udp: GRO L4 improvements - improve 'forward' / 'frag_list' co-existence with UDP tunnel GRO, allowing the first to take place correctly even for encapsulated UDP traffic - micro-optimize dev_gro_receive() and flow dissection, avoid retpoline overhead on VLAN and TEB GRO - use less memory for sysctls, add a new sysctl type, to allow using u8 instead of "int" and "long" and shrink networking sysctls - veth: allow GRO without XDP - this allows aggregating UDP packets before handing them off to routing, bridge, OvS, etc. - allow specifing ifindex when device is moved to another namespace - netfilter: - nft_socket: add support for cgroupsv2 - nftables: add catch-all set element - special element used to define a default action in case normal lookup missed - use net_generic infra in many modules to avoid allocating per-ns memory unnecessarily - xps: improve the xps handling to avoid potential out-of-bound accesses and use-after-free when XPS change race with other re-configuration under traffic - add a config knob to turn off per-cpu netdev refcnt to catch underflows in testing Device APIs: - add WWAN subsystem to organize the WWAN interfaces better and hopefully start driving towards more unified and vendor- independent APIs - ethtool: - add interface for reading IEEE MIB stats (incl. mlx5 and bnxt support) - allow network drivers to dump arbitrary SFP EEPROM data, current offset+length API was a poor fit for modern SFP which define EEPROM in terms of pages (incl. mlx5 support) - act_police, flow_offload: add support for packet-per-second policing (incl. offload for nfp) - psample: add additional metadata attributes like transit delay for packets sampled from switch HW (and corresponding egress and policy-based sampling in the mlxsw driver) - dsa: improve support for sandwiched LAGs with bridge and DSA - netfilter: - flowtable: use direct xmit in topologies with IP forwarding, bridging, vlans etc. - nftables: counter hardware offload support - Bluetooth: - improvements for firmware download w/ Intel devices - add support for reading AOSP vendor capabilities - add support for virtio transport driver - mac80211: - allow concurrent monitor iface and ethernet rx decap - set priority and queue mapping for injected frames - phy: add support for Clause-45 PHY Loopback - pci/iov: add sysfs MSI-X vector assignment interface to distribute MSI-X resources to VFs (incl. mlx5 support) New hardware/drivers: - dsa: mv88e6xxx: add support for Marvell mv88e6393x - 11-port Ethernet switch with 8x 1-Gigabit Ethernet and 3x 10-Gigabit interfaces. - dsa: support for legacy Broadcom tags used on BCM5325, BCM5365 and BCM63xx switches - Microchip KSZ8863 and KSZ8873; 3x 10/100Mbps Ethernet switches - ath11k: support for QCN9074 a 802.11ax device - Bluetooth: Broadcom BCM4330 and BMC4334 - phy: Marvell 88X2222 transceiver support - mdio: add BCM6368 MDIO mux bus controller - r8152: support RTL8153 and RTL8156 (USB Ethernet) chips - mana: driver for Microsoft Azure Network Adapter (MANA) - Actions Semi Owl Ethernet MAC - can: driver for ETAS ES58X CAN/USB interfaces Pure driver changes: - add XDP support to: enetc, igc, stmmac - add AF_XDP support to: stmmac - virtio: - page_to_skb() use build_skb when there's sufficient tailroom (21% improvement for 1000B UDP frames) - support XDP even without dedicated Tx queues - share the Tx queues with the stack when necessary - mlx5: - flow rules: add support for mirroring with conntrack, matching on ICMP, GTP, flex filters and more - support packet sampling with flow offloads - persist uplink representor netdev across eswitch mode changes - allow coexistence of CQE compression and HW time-stamping - add ethtool extended link error state reporting - ice, iavf: support flow filters, UDP Segmentation Offload - dpaa2-switch: - move the driver out of staging - add spanning tree (STP) support - add rx copybreak support - add tc flower hardware offload on ingress traffic - ionic: - implement Rx page reuse - support HW PTP time-stamping - octeon: support TC hardware offloads - flower matching on ingress and egress ratelimitting. - stmmac: - add RX frame steering based on VLAN priority in tc flower - support frame preemption (FPE) - intel: add cross time-stamping freq difference adjustment - ocelot: - support forwarding of MRP frames in HW - support multiple bridges - support PTP Sync one-step timestamping - dsa: mv88e6xxx, dpaa2-switch: offload bridge port flags like learning, flooding etc. - ipa: add IPA v4.5, v4.9 and v4.11 support (Qualcomm SDX55, SM8350, SC7280 SoCs) - mt7601u: enable TDLS support - mt76: - add support for 802.3 rx frames (mt7915/mt7615) - mt7915 flash pre-calibration support - mt7921/mt7663 runtime power management fixes" * tag 'net-next-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2451 commits) net: selftest: fix build issue if INET is disabled net: netrom: nr_in: Remove redundant assignment to ns net: tun: Remove redundant assignment to ret net: phy: marvell: add downshift support for M88E1240 net: dsa: ksz: Make reg_mib_cnt a u8 as it never exceeds 255 net/sched: act_ct: Remove redundant ct get and check icmp: standardize naming of RFC 8335 PROBE constants bpf, selftests: Update array map tests for per-cpu batched ops bpf: Add batched ops support for percpu array bpf: Implement formatted output helpers with bstr_printf seq_file: Add a seq_bprintf function sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues net:nfc:digital: Fix a double free in digital_tg_recv_dep_req net: fix a concurrency bug in l2tp_tunnel_register() net/smc: Remove redundant assignment to rc mpls: Remove redundant assignment to err llc2: Remove redundant assignment to rc net/tls: Remove redundant initialization of record rds: Remove redundant assignment to nr_sig dt-bindings: net: mdio-gpio: add compatible for microchip,mdio-smi0 ...
2021-04-16powerpc: dts: fsl: Drop obsolete fsl,rx-bit-map and fsl,tx-bit-map propertiesClaudiu Manoil
These are very old properties that were used by the "gianfar" ethernet driver. They don't have documented bindings and are obsolete. Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-23xsysace: Remove SYSACE driverMichal Simek
Sysace IP is no longer used on Xilinx PowerPC 405/440 and Microblaze systems. The driver is not regularly tested and very likely not working for quite a long time that's why remove it. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-12-21powerpc/boot: Fix build of dts/fslMichael Ellerman
The lkp robot reported that some configs fail to build, for example mpc85xx_smp_defconfig, with: cc1: fatal error: opening output file arch/powerpc/boot/dts/fsl/.mpc8540ads.dtb.dts.tmp: No such file or directory This bisects to: cc8a51ca6f05 ("kbuild: always create directories of targets") Although that commit claims to be about in-tree builds, it somehow breaks out-of-tree builds. But presumably it's just exposing a latent bug in our Makefiles. We can fix it by adding to targets for dts/fsl in the same way that we do for dts. Fixes: cc8a51ca6f05 ("kbuild: always create directories of targets") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201215032906.473460-1-mpe@ellerman.id.au
2020-12-17Merge tag 'powerpc-5.11-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Switch to the generic C VDSO, as well as some cleanups of our VDSO setup/handling code. - Support for KUAP (Kernel User Access Prevention) on systems using the hashed page table MMU, using memory protection keys. - Better handling of PowerVM SMT8 systems where all threads of a core do not share an L2, allowing the scheduler to make better scheduling decisions. - Further improvements to our machine check handling. - Show registers when unwinding interrupt frames during stack traces. - Improvements to our pseries (PowerVM) partition migration code. - Several series from Christophe refactoring and cleaning up various parts of the 32-bit code. - Other smaller features, fixes & cleanups. Thanks to: Alan Modra, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Ard Biesheuvel, Athira Rajeev, Balamuruhan S, Bill Wendling, Cédric Le Goater, Christophe Leroy, Christophe Lombard, Colin Ian King, Daniel Axtens, David Hildenbrand, Frederic Barrat, Ganesh Goudar, Gautham R. Shenoy, Geert Uytterhoeven, Giuseppe Sacco, Greg Kurz, Harish, Jan Kratochvil, Jordan Niethe, Kaixu Xia, Laurent Dufour, Leonardo Bras, Madhavan Srinivasan, Mahesh Salgaonkar, Mathieu Desnoyers, Nathan Lynch, Nicholas Piggin, Oleg Nesterov, Oliver O'Halloran, Oscar Salvador, Po-Hsu Lin, Qian Cai, Qinglang Miao, Randy Dunlap, Ravi Bangoria, Sachin Sant, Sandipan Das, Sebastian Andrzej Siewior , Segher Boessenkool, Srikar Dronamraju, Tyrel Datwyler, Uwe Kleine-König, Vincent Stehlé, Youling Tang, and Zhang Xiaoxu. * tag 'powerpc-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (304 commits) powerpc/32s: Fix cleanup_cpu_mmu_context() compile bug powerpc: Add config fragment for disabling -Werror powerpc/configs: Add ppc64le_allnoconfig target powerpc/powernv: Rate limit opal-elog read failure message powerpc/pseries/memhotplug: Quieten some DLPAR operations powerpc/ps3: use dma_mapping_error() powerpc: force inlining of csum_partial() to avoid multiple csum_partial() with GCC10 powerpc/perf: Fix Threshold Event Counter Multiplier width for P10 powerpc/mm: Fix hugetlb_free_pmd_range() and hugetlb_free_pud_range() KVM: PPC: Book3S HV: Fix mask size for emulated msgsndp KVM: PPC: fix comparison to bool warning KVM: PPC: Book3S: Assign boolean values to a bool variable powerpc: Inline setup_kup() powerpc/64s: Mark the kuap/kuep functions non __init KVM: PPC: Book3S HV: XIVE: Add a comment regarding VP numbering powerpc/xive: Improve error reporting of OPAL calls powerpc/xive: Simplify xive_do_source_eoi() powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_EOI_FW powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_MASK_FW powerpc/xive: Remove P9 DD1 flag XIVE_IRQ_FLAG_SHIFT_BUG ...
2020-12-04powerpc/boot: Make use of REL16 relocs in powerpc/boot/util.SAlan Modra
Use bcl 20,31,0f rather than plain bl to avoid unbalancing the link stack. Update the code to use REL16 relocs, available for ppc64 in 2009 (and ppc32 in 2005). Signed-off-by: Alan Modra <amodra@gmail.com> [mpe: Incorporate more detail into the change log] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2020-11-26powerpc/boot: Use clang when CC is clangBill Wendling
The gcc compiler may not be available if CC is clang. Signed-off-by: Bill Wendling <morbo@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201120224034.191382-3-morbo@google.com
2020-11-26powerpc/boot/wrapper: Add "-z notext" flag to disable diagnosticBill Wendling
The "-z notext" flag disables reporting an error if DT_TEXTREL is set. ld.lld: error: can't create dynamic relocation R_PPC64_ADDR64 against symbol: _start in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output >>> defined in >>> referenced by crt0.o:(.text+0x8) in archive arch/powerpc/boot/wrapper.a The BFD linker disables this by default (though it's configurable in current versions). LLD enables this by default. So we add the flag to keep LLD from emitting the error. Signed-off-by: Bill Wendling <morbo@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201120224034.191382-2-morbo@google.com
2020-11-26powerpc/boot/wrapper: Add "-z rodynamic" when using LLDBill Wendling
Normally all read-only sections precede SHF_WRITE sections. .dynamic and .got have the SHF_WRITE flag; .dynamic probably because of DT_DEBUG. LLD emits an error when this happens, so use "-z rodynamic" to mark .dynamic as read-only. Signed-off-by: Bill Wendling <morbo@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201118223910.2711337-1-morbo@google.com
2020-11-26powerpc/boot: Move the .got section to after the .dynamic sectionBill Wendling
Both .dynamic and .got are RELRO sections and should be placed together, and LLD emits an error: ld.lld: error: section: .got is not contiguous with other relro sections Place them together to avoid this. Signed-off-by: Bill Wendling <morbo@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201017000151.150788-1-morbo@google.com
2020-11-19powerpc/ps3: Drop unused DBG macroMichael Ellerman
This DBG macro is unused, and has been unused since the file was originally merged into mainline. Just drop it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201023031305.3284819-1-mpe@ellerman.id.au
2020-11-18powerpc: boot: include compiler_attributes.hNick Desaulniers
The kernel uses `-include` to include include/linux/compiler_types.h into all translation units (see scripts/Makefile.lib), which #includes compiler_attributes.h. arch/powerpc/boot/ uses different compiler flags from the rest of the kernel. As such, it doesn't contain the definitions from these headers, and redefines a few that it needs. For the purpose of enabling -Wimplicit-fallthrough for ppc, include compiler_attributes.h via `-include`. It was also noted in 6a9dc5fd6170 that we could -D__KERNEL__ and -include compiler_types.h like the main kernel does, though testing that produces a whole sea of warnings to cleanup. This approach is minimally invasive. And it also helps to entice a cleanup. Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Gustavo A. R. Silva <gustavoars@kernel.org> Acked-by: Miguel Ojeda <ojeda@kernel.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://github.com/ClangBuiltLinux/linux/issues/236 [ Gustavo: Massage a bit as per Miguel's suggestion. ] Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-10-16Merge tag 'powerpc-5.10-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - A series from Nick adding ARCH_WANT_IRQS_OFF_ACTIVATE_MM & selecting it for powerpc, as well as a related fix for sparc. - Remove support for PowerPC 601. - Some fixes for watchpoints & addition of a new ptrace flag for detecting ISA v3.1 (Power10) watchpoint features. - A fix for kernels using 4K pages and the hash MMU on bare metal Power9 systems with > 16TB of RAM, or RAM on the 2nd node. - A basic idle driver for shallow stop states on Power10. - Tweaks to our sched domains code to better inform the scheduler about the hardware topology on Power9/10, where two SMT4 cores can be presented by firmware as an SMT8 core. - A series doing further reworks & cleanups of our EEH code. - Addition of a filter for RTAS (firmware) calls done via sys_rtas(), to prevent root from overwriting kernel memory. - Other smaller features, fixes & cleanups. Thanks to: Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Athira Rajeev, Biwen Li, Cameron Berkenpas, Cédric Le Goater, Christophe Leroy, Christoph Hellwig, Colin Ian King, Daniel Axtens, David Dai, Finn Thain, Frederic Barrat, Gautham R. Shenoy, Greg Kurz, Gustavo Romero, Ira Weiny, Jason Yan, Joel Stanley, Jordan Niethe, Kajol Jain, Konrad Rzeszutek Wilk, Laurent Dufour, Leonardo Bras, Liu Shixin, Luca Ceresoli, Madhavan Srinivasan, Mahesh Salgaonkar, Nathan Lynch, Nicholas Mc Guire, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Pedro Miraglia Franco de Carvalho, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Ravi Bangoria, Russell Currey, Satheesh Rajendran, Scott Cheloha, Segher Boessenkool, Srikar Dronamraju, Stan Johnson, Stephen Kitt, Stephen Rothwell, Thiago Jung Bauermann, Tyrel Datwyler, Vaibhav Jain, Vaidyanathan Srinivasan, Vasant Hegde, Wang Wensheng, Wolfram Sang, Yang Yingliang, zhengbin. * tag 'powerpc-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (228 commits) Revert "powerpc/pci: unmap legacy INTx interrupts when a PHB is removed" selftests/powerpc: Fix eeh-basic.sh exit codes cpufreq: powernv: Fix frame-size-overflow in powernv_cpufreq_reboot_notifier powerpc/time: Make get_tb() common to PPC32 and PPC64 powerpc/time: Make get_tbl() common to PPC32 and PPC64 powerpc/time: Remove get_tbu() powerpc/time: Avoid using get_tbl() and get_tbu() internally powerpc/time: Make mftb() common to PPC32 and PPC64 powerpc/time: Rename mftbl() to mftb() powerpc/32s: Remove #ifdef CONFIG_PPC_BOOK3S_32 in head_book3s_32.S powerpc/32s: Rename head_32.S to head_book3s_32.S powerpc/32s: Setup the early hash table at all time. powerpc/time: Remove ifdef in get_dec() and set_dec() powerpc: Remove get_tb_or_rtc() powerpc: Remove __USE_RTC() powerpc: Tidy up a bit after removal of PowerPC 601. powerpc: Remove support for PowerPC 601 powerpc: Remove PowerPC 601 powerpc: Drop SYNC_601() ISYNC_601() and SYNC() powerpc: Remove CONFIG_PPC601_SYNC_FIX ...
2020-10-08powerpc: Remove support for PowerPC 601Christophe Leroy
PowerPC 601 has been retired. Remove all associated specific code. CPU_FTRS_PPC601 has CPU_FTR_COHERENT_ICACHE and CPU_FTR_COMMON. CPU_FTR_COMMON is already present via other CPU_FTRS. None of the remaining CPU selects CPU_FTR_COHERENT_ICACHE. So CPU_FTRS_PPC601 can be removed from the possible features, hence can be removed completely. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/60b725d55e21beec3335175c20b77903ff98284f.1601362098.git.christophe.leroy@csgroup.eu
2020-10-03powerpc: dts: t1040rdb: add ports for Seville Ethernet switchVladimir Oltean
Define the network interface names for the switch ports and hook them up to the 2 QSGMII PHYs that are onboard. A conscious decision was taken to go along with the numbers that are written on the front panel of the board and not with the hardware numbers of the switch chip ports. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Maxim Kochetkov <fido_max@inbox.ru> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-10-03powerpc: dts: t1040: add bindings for Seville Ethernet switchVladimir Oltean
Add the description of the embedded L2 switch inside the SoC dtsi file for NXP T1040. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Maxim Kochetkov <fido_max@inbox.ru> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-08powerpc/boot: Update Makefile comment for 64bit wrapperJordan Niethe
As of commit 147c05168fc8 ("powerpc/boot: Add support for 64bit little endian wrapper") the comment in the Makefile is misleading. The wrapper packaging 64bit kernel may built as a 32 or 64 bit elf. Update the comment to reflect this. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200825035147.3239-1-jniethe5@gmail.com
2020-08-25powerc/dtc/t1024rdb: remove interrupts propertyBiwen Li
Since the interrupt pin for RTC DS1339 is not connected to the CPU on T1024RDB, remove the interrupt property from the device tree. This also fix the following warning for hwclock.util-linux: $ hwclock.util-linux hwclock.util-linux: select() to /dev/rtc0 to wait for clock tick timed out Signed-off-by: Biwen Li <biwen.li@nxp.com> Acked-by: Li Yang <leoyang.li@nxp.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200527034228.23793-2-biwen.li@oss.nxp.com
2020-08-25powerpc/dts/t4240rdb: remove interrupts propertyBiwen Li
Since the interrupt pin for RTC DS1374 is not connected to the CPU on T4240RDB, remove the interrupt property from the device tree. This also fix the following warning for hwclock.util-linux: $ hwclock.util-linux hwclock.util-linux: select() to /dev/rtc0 to wait for clock tick timed out Signed-off-by: Biwen Li <biwen.li@nxp.com> Acked-by: Li Yang <leoyang.li@nxp.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200527034228.23793-1-biwen.li@oss.nxp.com
2020-08-09Merge tag 'kbuild-v5.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - run the checker (e.g. sparse) after the compiler - remove unneeded cc-option tests for old compiler flags - fix tar-pkg to install dtbs - introduce ccflags-remove-y and asflags-remove-y syntax - allow to trace functions in sub-directories of lib/ - introduce hostprogs-always-y and userprogs-always-y syntax - various Makefile cleanups * tag 'kbuild-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: stop filtering out $(GCC_PLUGINS_CFLAGS) from cc-option base kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled kbuild: introduce hostprogs-always-y and userprogs-always-y kbuild: sort hostprogs before passing it to ifneq kbuild: move host .so build rules to scripts/gcc-plugins/Makefile kbuild: Replace HTTP links with HTTPS ones kbuild: trace functions in subdirectories of lib/ kbuild: introduce ccflags-remove-y and asflags-remove-y kbuild: do not export LDFLAGS_vmlinux kbuild: always create directories of targets powerpc/boot: add DTB to 'targets' kbuild: buildtar: add dtbs support kbuild: remove cc-option test of -ffreestanding kbuild: remove cc-option test of -fno-stack-protector Revert "kbuild: Create directory for target DTB" kbuild: run the checker after the compiler
2020-07-29powerpc/fsl/dts: add missing P4080DS I2C devicesDavid Lamparter
This just adds the zl2006 voltage regulators / power monitors and the onboard I2C eeproms. The ICS9FG108 clock chip doesn't seem to have a driver, so it is left in the DTS as a comment. And for good measure, the SPD eeproms are tagged as such. Signed-off-by: David Lamparter <equinox@diac24.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20180920230422.GK487685@eidolon.nox.tf
2020-07-29powerpc/boot: Fix CONFIG_PPC_MPC52XX referencesMichael Ellerman
Commit 866bfc75f40e ("powerpc: conditionally compile platform-specific serial drivers") made some code depend on CONFIG_PPC_MPC52XX, which doesn't exist. Fix it to use CONFIG_PPC_MPC52xx. Fixes: 866bfc75f40e ("powerpc: conditionally compile platform-specific serial drivers") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724131728.1643966-7-mpe@ellerman.id.au
2020-07-22powerpc/boot: add DTB to 'targets'Masahiro Yamada
PowerPC always re-builds DTB even if nothing has been changed. As for other architectures, arch/*/boot/dts/Makefile builds DTB by using the dtb-y syntax. In contrast, arch/powerpc/boot/dts/(fsl/)Makefile does nothing unless CONFIG_OF_ALL_DTBS is defined. Instead, arch/powerpc/boot/Makefile builds DTB on demand. You need to add DTB to 'targets' explicitly so .*.cmd files are included. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au>
2020-06-30powerpc/boot/dts: Fix dtc "pciex" warningsMichael Ellerman
With CONFIG_OF_ALL_DTBS=y, as set by eg. allmodconfig, we see lots of warnings about our dts files, such as: arch/powerpc/boot/dts/glacier.dts:492.26-532.5: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie" The node name should not particularly matter, it's just a name, and AFAICS there's no kernel code that cares whether nodes are *named* "pciex" or "pcie". So shutup these warnings by converting to the name dtc wants. As always there's some risk this could break something obscure that does rely on the name, in which case we can revert. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200623130320.405852-1-mpe@ellerman.id.au
2020-06-30powerpc/boot: Use address-of operator on section symbolsNathan Chancellor
Clang warns: arch/powerpc/boot/main.c:107:18: warning: array comparison always evaluates to a constant [-Wtautological-compare] if (_initrd_end > _initrd_start) { ^ arch/powerpc/boot/main.c:155:20: warning: array comparison always evaluates to a constant [-Wtautological-compare] if (_esm_blob_end <= _esm_blob_start) ^ 2 warnings generated. These are not true arrays, they are linker defined symbols, which are just addresses. Using the address of operator silences the warning and does not change the resulting assembly with either clang/ld.lld or gcc/ld (tested with diff + objdump -Dr). Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Tested-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200624035920.835571-1-natechancellor@gmail.com
2020-06-22powerpc/4xx: ppc4xx compile flag optimizationsImre Kaloz
This patch splits up the compile flags between ppc40x and ppc44x. Signed-off-by: John Crispin <john@phrozen.org> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1482393968-60623-1-git-send-email-john@phrozen.org
2020-05-28powerpc/40x: Remove EP405Christophe Leroy
EP405 is an old type of board based on a 405GP which is obsolete. Remove it. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/e9534caa51f327c841b3db5f48043a47ad70d246.1590079968.git.christophe.leroy@csgroup.eu
2020-05-28powerpc/40x: Remove WALNUTChristophe Leroy
CONFIG_WALNUT is not selected by any config and is based on 405GP which is obsolete. Remove it. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/ab46013d8d33346af68faf30a719a586c3befad9.1590079968.git.christophe.leroy@csgroup.eu
2020-05-28powerpc: Remove Xilinx PPC405/PPC440 supportMichal Simek
The latest Xilinx design tools called ISE and EDK has been released in October 2013. New tool doesn't support any PPC405/PPC440 new designs. These platforms are no longer supported and tested. PowerPC 405/440 port is orphan from 2013 by commit cdeb89943bfc ("MAINTAINERS: Fix incorrect status tag") and commit 19624236cce1 ("MAINTAINERS: Update Grant's email address and maintainership") that's why it is time to remove the support fot these platforms. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8c593895e2cb57d232d85ce4d8c3a1aa7f0869cc.1590079968.git.christophe.leroy@csgroup.eu
2020-05-20powerpc/ps3: Add check for otheros image sizeGeoff Levand
The ps3's otheros flash loader has a size limit of 16 MiB for the uncompressed image. If that limit will be reached output the flash image file as 'otheros-too-big.bld'. Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/897c2a59-378e-7c9b-3976-d0a0def90913@infradead.org
2020-05-19powerpc/wrapper: Output linker map fileGeoff Levand
To aid debugging wrapper troubles, output a linker map file 'wrapper.map' when the build is verbose. Signed-off-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/fb477f5e91c6b74a1dec98df3cc0a1c91632d94d.1589049250.git.geoff@infradead.org
2020-05-11powerpc/5200: update contact emailWolfram Sang
My 'pengutronix' address is defunct for years. Merge the entries and use the proper contact address. Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200502142642.18979-1-wsa@kernel.org
2020-04-05Merge tag 'powerpc-5.7-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Slightly late as I had to rebase mid-week to insert a bug fix: - A large series from Nick for 64-bit to further rework our exception vectors, and rewrite portions of the syscall entry/exit and interrupt return in C. The result is much easier to follow code that is also faster in general. - Cleanup of our ptrace code to split various parts out that had become badly intertwined with #ifdefs over the years. - Changes to our NUMA setup under the PowerVM hypervisor which should hopefully avoid non-sensical topologies which can lead to warnings from the workqueue code and other problems. - MAINTAINERS updates to remove some of our old orphan entries and update the status of others. - Quite a few other small changes and fixes all over the map. Thanks to: Abdul Haleem, afzal mohammed, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Balamuruhan S, Cédric Le Goater, Chen Zhou, Christophe JAILLET, Christophe Leroy, Christoph Hellwig, Clement Courbet, Daniel Axtens, David Gibson, Douglas Miller, Fabiano Rosas, Fangrui Song, Ganesh Goudar, Gautham R. Shenoy, Greg Kroah-Hartman, Greg Kurz, Gustavo Luiz Duarte, Hari Bathini, Ilie Halip, Jan Kara, Joe Lawrence, Joe Perches, Kajol Jain, Larry Finger, Laurentiu Tudor, Leonardo Bras, Libor Pechacek, Madhavan Srinivasan, Mahesh Salgaonkar, Masahiro Yamada, Masami Hiramatsu, Mauricio Faria de Oliveira, Michael Neuling, Michal Suchanek, Mike Rapoport, Nageswara R Sastry, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Po-Hsu Lin, Pratik Rajesh Sampat, Rasmus Villemoes, Ravi Bangoria, Roman Bolshakov, Sam Bobroff, Sandipan Das, Santosh S, Sedat Dilek, Segher Boessenkool, Shilpasri G Bhat, Sourabh Jain, Srikar Dronamraju, Stephen Rothwell, Tyrel Datwyler, Vaibhav Jain, YueHaibing" * tag 'powerpc-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (158 commits) powerpc: Make setjmp/longjmp signature standard powerpc/cputable: Remove unnecessary copy of cpu_spec->oprofile_type powerpc: Suppress .eh_frame generation powerpc: Drop -fno-dwarf2-cfi-asm powerpc/32: drop unused ISA_DMA_THRESHOLD powerpc/powernv: Add documentation for the opal sensor_groups sysfs interfaces selftests/powerpc: Fix try-run when source tree is not writable powerpc/vmlinux.lds: Explicitly retain .gnu.hash powerpc/ptrace: move ptrace_triggered() into hw_breakpoint.c powerpc/ptrace: create ppc_gethwdinfo() powerpc/ptrace: create ptrace_get_debugreg() powerpc/ptrace: split out ADV_DEBUG_REGS related functions. powerpc/ptrace: move register viewing functions out of ptrace.c powerpc/ptrace: split out TRANSACTIONAL_MEM related functions. powerpc/ptrace: split out SPE related functions. powerpc/ptrace: split out ALTIVEC related functions. powerpc/ptrace: split out VSX related functions. powerpc/ptrace: drop PARAMETER_SAVE_AREA_OFFSET powerpc/ptrace: drop unnecessary #ifdefs CONFIG_PPC64 powerpc/ptrace: remove unused header includes ...
2020-03-27powerpc/boot: Delete unneeded .globl _zimage_startFangrui Song
.globl sets the symbol binding to STB_GLOBAL while .weak sets the binding to STB_WEAK. GNU as let .weak override .globl since binutils-gdb 5ca547dc2399a0a5d9f20626d4bf5547c3ccfddd (1996). Clang integrated assembler let the last win but it may error in the future. Since it is a convention that only one binding directive is used, just delete .globl. Fixes: ee9d21b3b358 ("powerpc/boot: Ensure _zimage_start is a weak symbol") Signed-off-by: Fangrui Song <maskray@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200325164257.170229-1-maskray@google.com
2020-03-25.gitignore: add SPDX License IdentifierMasahiro Yamada
Add SPDX License Identifier to all .gitignore files. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-04powerpc/Makefile: Mark phony targets as PHONYMichael Ellerman
Some of our phony targets are not marked as such. This can lead to confusing errors, eg: $ make clean $ touch install $ make install make: 'install' is up to date. $ Fix it by adding them to the PHONY variable which is marked phony in the top-level Makefile, or in scripts/Makefile.build for the boot Makefile. Suggested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200219000434.15872-1-mpe@ellerman.id.au
2020-02-09Merge tag 'kbuild-v5.6-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - fix randconfig to generate a sane .config - rename hostprogs-y / always to hostprogs / always-y, which are more natual syntax. - optimize scripts/kallsyms - fix yes2modconfig and mod2yesconfig - make multiple directory targets ('make foo/ bar/') work * tag 'kbuild-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: make multiple directory targets work kconfig: Invalidate all symbols after changing to y or m. kallsyms: fix type of kallsyms_token_table[] scripts/kallsyms: change table to store (strcut sym_entry *) scripts/kallsyms: rename local variables in read_symbol() kbuild: rename hostprogs-y/always to hostprogs/always-y kbuild: fix the document to use extra-y for vmlinux.lds kconfig: fix broken dependency in randconfig-generated .config
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