From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D5F06C433EF for ; Sun, 15 May 2022 15:09:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237360AbiEOPJr (ORCPT ); Sun, 15 May 2022 11:09:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236488AbiEOPJp (ORCPT ); Sun, 15 May 2022 11:09:45 -0400 Received: from mailbox.box.xen0n.name (mail.xen0n.name [115.28.160.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D551B24BD9; Sun, 15 May 2022 08:09:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xen0n.name; s=mail; t=1652627371; bh=Hb4CQlAhgME86/GMdQ27WW3XwauEb65jLEHGD8pxIxg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=B9ruAb6GTvWeYJjqsIW8kLDB5K03mcGyAhJEYQQxwP0He2RBkJm8ZomcyvrJLLoue lYQOVkv3gXyO8a9eDU+grG2P/7hv25+Wsh0X9B2w4OrT1G5wHk9PAauvtHkrpPKhDn lU7ZvvLwkZkSfNm0NsHkL6toYyZQMk1Q+OzJY3C8= Received: from [192.168.9.172] (unknown [101.88.28.48]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by mailbox.box.xen0n.name (Postfix) with ESMTPSA id C4D6860694; Sun, 15 May 2022 23:09:30 +0800 (CST) Message-ID: <57455322-263e-5e38-d896-8d0bb2590767@xen0n.name> Date: Sun, 15 May 2022 23:09:29 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.0a1 Subject: Re: [PATCH V10 00/22] arch: Add basic LoongArch support Content-Language: en-US To: Huacai Chen , Arnd Bergmann , Andy Lutomirski , Thomas Gleixner , Peter Zijlstra , Andrew Morton , David Airlie , Jonathan Corbet , Linus Torvalds Cc: linux-arch@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Xuefeng Li , Yanteng Si , Huacai Chen , Guo Ren , Xuerui Wang , Jiaxun Yang , Stephen Rothwell References: <20220514080402.2650181-1-chenhuacai@loongson.cn> From: WANG Xuerui In-Reply-To: <20220514080402.2650181-1-chenhuacai@loongson.cn> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 5/14/22 16:03, Huacai Chen wrote: > LoongArch is a new RISC ISA, which is a bit like MIPS or RISC-V. > LoongArch includes a reduced 32-bit version (LA32R), a standard 32-bit > version (LA32S) and a 64-bit version (LA64). LoongArch use ACPI as its > boot protocol LoongArch-specific interrupt controllers (similar to APIC) > are already added in the next revision of ACPI Specification (current > revision is 6.4). > > This patchset is adding basic LoongArch support in mainline kernel, we > can see a complete snapshot here: > https://github.com/loongson/linux/tree/loongarch-next > > Cross-compile tool chain to build kernel: > https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-2022-03-03-cross-tools-gcc-glibc.tar.xz > > A CLFS-based Linux distro: > https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-system-2022-03-03.tar.bz2 > > Open-source tool chain which is under review (Binutils and Gcc are already upstream): > https://github.com/loongson/binutils-gdb/tree/upstream_v3.1 > https://github.com/loongson/gcc/tree/loongarch_upstream_v6.3 > https://github.com/loongson/glibc/tree/loongarch_2_35_dev_v2.2 > > Loongson and LoongArch documentations: > https://github.com/loongson/LoongArch-Documentation > > LoongArch-specific interrupt controllers: > https://mantis.uefi.org/mantis/view.php?id=2203 > https://mantis.uefi.org/mantis/view.php?id=2313 > > V1 -> V2: > 1, Add documentation patches; > 2, Restore copyright statements; > 3, Split the big header patch; > 4, Cleanup signal-related headers; > 5, Cleanup incomplete 32-bit support; > 6, Move the major PCI work to drivers/pci; > 7, Rework Loongson64 platform support; > 8, Rework lpj and __udelay()/__ndelay(); > 9, Rework page table layout config options; > 10, Rework syscall/exception/interrupt with generic entry framework; > 11, Simplify the VDSO/VSYSCALL implementation; > 12, Use generic I/O access macros and functions; > 13, Remove unaligned access emulation at present; > 14, Keep clocksource code in arch since it is the "native clocksource"; > 15, Some other minor fixes and improvements. > > V2 -> V3: > 1, Rebased on 5.15-rc1; > 2, Cleanup PCI code on V2; > 3, Support multiple msi domain; > 4, Support cacheable ioremap(); > 5, Use irq stack for interrupt handling; > 6, Adjust struct ucontext and rt_sigframe; > 7, Some other minor fixes and improvements. > > V3 -> V4: > 1, Rebased on 5.15-rc3; > 2, Rework SMP support and remove legacy IPI; > 3, Rework signal support and remove loongarch_abi; > 4, Simplify phys_to_dma() and dma_to_phys(); > 5, Remove unused sys_mmap2() implementation; > 6, Remove unused strncpy_user.S and strnlen_user.S; > 7, Some other minor fixes and improvements. > > V4 -> V5: > 1, Rebased on 5.15-rc4; > 2, Fix a _PAGE_CHG_MASK bug; > 3, Fix vdso_base() calculation; > 4, Adjust syscall and ptrace code; > 5, Use generic bitops implementation; > 6, Avoid syscall restart handling in sys_rt_sigreturn(); > 7, Update commit messages. > > V5 -> V6: > 1, Rebased on 5.17-rc4; > 2, Use GENERIC_IRQ_MIGRATION; > 3, Improve sigcontext definition; > 4, Improve numa_default_distance(); > 5, Increse MINSIGSTKSZ and SIGSTKSZ; > 6, Restruct pt_regs and user_pt_regs; > 7, Fix a corner case of protection_map; > 8, Fix some corner cases of system calls; > 9, Separate module region and vmalloc region; > 10, Rename registers to match official documents. > > V6 -> V7: > 1, Rebased on 5.17-rc6; > 2, Refactor do_page_fault(); > 3, Adjust memblock initialization; > 4, Use -mstrict-align to build kernel; > 5, Reimplement elf_read_implies_exec() as other archs; > 6, Some other minor fixes and improvements. > > V7 -> V8: > 1, Rebased on 5.17-rc8; > 2, Remove useless abidefs.h; > 3, Remove useless HAVE_ARCH_NODEDATA_EXTENSION; > 4, Fix and simplify uaccess.h; > 5, Fix bugs after pt_regs restruction; > 6, Use generic copy_from_user_page()/copy_to_user_page(); > 7, Some other minor fixes and improvements. > > V8 -> V9: > 1, Rebased on 5.18-rc4; > 2, Fix 4-level page tables; > 3, Always use 16KB kernel stack; > 4, Add efistub and zboot support; > 5, Remove useless HAVE_FUTEX_CMPXCHG; > 6, Optimize module machanism for size; > 7, Define copy_user_page() to avoid build errors; > 8, Some other minor fixes and improvements. > > V9 -> V10: > 1, Rebased on 5.18-rc6; > 2, Use generic efi stub; > 3, Use generic string library; > 4, Use generic ticket spinlock; > 5, Use more meaningful macro naming; > 6, Remove the zboot patch; > 7, Fix commit message and documentations; > 8, Some other minor fixes and improvements. > > Huacai Chen(22): > Documentation: LoongArch: Add basic documentations. > Documentation/zh_CN: Add basic LoongArch documentations. > LoongArch: Add elf-related definitions. > LoongArch: Add writecombine support for drm. > LoongArch: Add build infrastructure. > LoongArch: Add CPU definition headers. > LoongArch: Add atomic/locking headers. > LoongArch: Add other common headers. > LoongArch: Add boot and setup routines. > LoongArch: Add exception/interrupt handling. > LoongArch: Add process management. > LoongArch: Add memory management. > LoongArch: Add system call support. > LoongArch: Add signal handling support. > LoongArch: Add elf and module support. > LoongArch: Add misc common routines. > LoongArch: Add some library functions. > LoongArch: Add PCI controller support. > LoongArch: Add VDSO and VSYSCALL support. > LoongArch: Add multi-processor (SMP) support. > LoongArch: Add Non-Uniform Memory Access (NUMA) support. > LoongArch: Add Loongson-3 default config file. > > Signed-off-by: Huacai Chen > --- > Documentation/arch.rst | 1 + > Documentation/loongarch/features.rst | 3 + > Documentation/loongarch/index.rst | 21 + > Documentation/loongarch/introduction.rst | 345 +++++ > Documentation/loongarch/irq-chip-model.rst | 168 +++ > Documentation/translations/zh_CN/index.rst | 1 + > .../translations/zh_CN/loongarch/features.rst | 8 + > .../translations/zh_CN/loongarch/index.rst | 26 + > .../translations/zh_CN/loongarch/introduction.rst | 318 ++++ > .../zh_CN/loongarch/irq-chip-model.rst | 167 +++ > arch/loongarch/.gitignore | 9 + > arch/loongarch/Kbuild | 6 + > arch/loongarch/Kconfig | 434 ++++++ > arch/loongarch/Kconfig.debug | 0 > arch/loongarch/Makefile | 131 ++ > arch/loongarch/boot/Makefile | 78 + > arch/loongarch/boot/boot.lds.S | 64 + > arch/loongarch/boot/decompress.c | 98 ++ > arch/loongarch/boot/string.c | 166 +++ > arch/loongarch/boot/zheader.S | 100 ++ > arch/loongarch/boot/zkernel.S | 99 ++ > arch/loongarch/configs/loongson3_defconfig | 770 ++++++++++ > arch/loongarch/include/asm/Kbuild | 29 + > arch/loongarch/include/asm/acenv.h | 17 + > arch/loongarch/include/asm/acpi.h | 38 + > arch/loongarch/include/asm/addrspace.h | 110 ++ > arch/loongarch/include/asm/asm-offsets.h | 5 + > arch/loongarch/include/asm/asm-prototypes.h | 7 + > arch/loongarch/include/asm/asm.h | 190 +++ > arch/loongarch/include/asm/asmmacro.h | 294 ++++ > arch/loongarch/include/asm/atomic.h | 362 +++++ > arch/loongarch/include/asm/barrier.h | 159 ++ > arch/loongarch/include/asm/bitops.h | 33 + > arch/loongarch/include/asm/bitrev.h | 34 + > arch/loongarch/include/asm/boot_param.h | 97 ++ > arch/loongarch/include/asm/bootinfo.h | 30 + > arch/loongarch/include/asm/branch.h | 21 + > arch/loongarch/include/asm/bug.h | 23 + > arch/loongarch/include/asm/cache.h | 13 + > arch/loongarch/include/asm/cacheflush.h | 80 + > arch/loongarch/include/asm/cacheops.h | 37 + > arch/loongarch/include/asm/clocksource.h | 12 + > arch/loongarch/include/asm/cmpxchg.h | 136 ++ > arch/loongarch/include/asm/compiler.h | 15 + > arch/loongarch/include/asm/cpu-features.h | 69 + > arch/loongarch/include/asm/cpu-info.h | 136 ++ > arch/loongarch/include/asm/cpu.h | 127 ++ > arch/loongarch/include/asm/cpufeature.h | 24 + > arch/loongarch/include/asm/delay.h | 26 + > arch/loongarch/include/asm/dma-direct.h | 11 + > arch/loongarch/include/asm/dma.h | 13 + > arch/loongarch/include/asm/dmi.h | 24 + > arch/loongarch/include/asm/efi.h | 33 + > arch/loongarch/include/asm/elf.h | 299 ++++ > arch/loongarch/include/asm/entry-common.h | 13 + > arch/loongarch/include/asm/exec.h | 10 + > arch/loongarch/include/asm/fb.h | 23 + > arch/loongarch/include/asm/fixmap.h | 13 + > arch/loongarch/include/asm/fpregdef.h | 49 + > arch/loongarch/include/asm/fpu.h | 129 ++ > arch/loongarch/include/asm/futex.h | 108 ++ > arch/loongarch/include/asm/fw.h | 18 + > arch/loongarch/include/asm/hardirq.h | 26 + > arch/loongarch/include/asm/hugetlb.h | 79 + > arch/loongarch/include/asm/hw_irq.h | 17 + > arch/loongarch/include/asm/idle.h | 9 + > arch/loongarch/include/asm/inst.h | 63 + > arch/loongarch/include/asm/io.h | 129 ++ > arch/loongarch/include/asm/irq.h | 133 ++ > arch/loongarch/include/asm/irq_regs.h | 27 + > arch/loongarch/include/asm/irqflags.h | 78 + > arch/loongarch/include/asm/kdebug.h | 23 + > arch/loongarch/include/asm/linkage.h | 36 + > arch/loongarch/include/asm/local.h | 138 ++ > arch/loongarch/include/asm/loongarch.h | 1528 ++++++++++++++++++++ > arch/loongarch/include/asm/loongson.h | 159 ++ > arch/loongarch/include/asm/mmu.h | 16 + > arch/loongarch/include/asm/mmu_context.h | 152 ++ > arch/loongarch/include/asm/mmzone.h | 18 + > arch/loongarch/include/asm/module.h | 80 + > arch/loongarch/include/asm/module.lds.h | 7 + > arch/loongarch/include/asm/numa.h | 69 + > arch/loongarch/include/asm/page.h | 113 ++ > arch/loongarch/include/asm/pci.h | 40 + > arch/loongarch/include/asm/percpu.h | 222 +++ > arch/loongarch/include/asm/perf_event.h | 10 + > arch/loongarch/include/asm/pgalloc.h | 103 ++ > arch/loongarch/include/asm/pgtable-bits.h | 139 ++ > arch/loongarch/include/asm/pgtable.h | 572 ++++++++ > arch/loongarch/include/asm/prefetch.h | 29 + > arch/loongarch/include/asm/processor.h | 207 +++ > arch/loongarch/include/asm/ptrace.h | 152 ++ > arch/loongarch/include/asm/reboot.h | 10 + > arch/loongarch/include/asm/regdef.h | 43 + > arch/loongarch/include/asm/seccomp.h | 20 + > arch/loongarch/include/asm/serial.h | 11 + > arch/loongarch/include/asm/setup.h | 21 + > arch/loongarch/include/asm/shmparam.h | 12 + > arch/loongarch/include/asm/smp.h | 124 ++ > arch/loongarch/include/asm/sparsemem.h | 23 + > arch/loongarch/include/asm/spinlock.h | 12 + > arch/loongarch/include/asm/spinlock_types.h | 11 + > arch/loongarch/include/asm/stackframe.h | 219 +++ > arch/loongarch/include/asm/stacktrace.h | 74 + > arch/loongarch/include/asm/string.h | 17 + > arch/loongarch/include/asm/switch_to.h | 37 + > arch/loongarch/include/asm/syscall.h | 74 + > arch/loongarch/include/asm/thread_info.h | 106 ++ > arch/loongarch/include/asm/time.h | 50 + > arch/loongarch/include/asm/timex.h | 31 + > arch/loongarch/include/asm/tlb.h | 216 +++ > arch/loongarch/include/asm/tlbflush.h | 48 + > arch/loongarch/include/asm/topology.h | 41 + > arch/loongarch/include/asm/types.h | 33 + > arch/loongarch/include/asm/uaccess.h | 270 ++++ > arch/loongarch/include/asm/unistd.h | 11 + > arch/loongarch/include/asm/vdso.h | 38 + > arch/loongarch/include/asm/vdso/clocksource.h | 8 + > arch/loongarch/include/asm/vdso/gettimeofday.h | 99 ++ > arch/loongarch/include/asm/vdso/processor.h | 14 + > arch/loongarch/include/asm/vdso/vdso.h | 30 + > arch/loongarch/include/asm/vdso/vsyscall.h | 27 + > arch/loongarch/include/asm/vermagic.h | 19 + > arch/loongarch/include/asm/vmalloc.h | 4 + > arch/loongarch/include/uapi/asm/Kbuild | 2 + > arch/loongarch/include/uapi/asm/auxvec.h | 17 + > arch/loongarch/include/uapi/asm/bitfield.h | 15 + > arch/loongarch/include/uapi/asm/bitsperlong.h | 9 + > arch/loongarch/include/uapi/asm/break.h | 23 + > arch/loongarch/include/uapi/asm/byteorder.h | 13 + > arch/loongarch/include/uapi/asm/hwcap.h | 20 + > arch/loongarch/include/uapi/asm/inst.h | 57 + > arch/loongarch/include/uapi/asm/ptrace.h | 52 + > arch/loongarch/include/uapi/asm/reg.h | 59 + > arch/loongarch/include/uapi/asm/sigcontext.h | 63 + > arch/loongarch/include/uapi/asm/signal.h | 13 + > arch/loongarch/include/uapi/asm/swab.h | 52 + > arch/loongarch/include/uapi/asm/ucontext.h | 35 + > arch/loongarch/include/uapi/asm/unistd.h | 6 + > arch/loongarch/kernel/Makefile | 26 + > arch/loongarch/kernel/access-helper.h | 13 + > arch/loongarch/kernel/acpi.c | 501 +++++++ > arch/loongarch/kernel/asm-offsets.c | 262 ++++ > arch/loongarch/kernel/cacheinfo.c | 122 ++ > arch/loongarch/kernel/cmdline.c | 31 + > arch/loongarch/kernel/cmpxchg.c | 105 ++ > arch/loongarch/kernel/cpu-probe.c | 305 ++++ > arch/loongarch/kernel/dma.c | 40 + > arch/loongarch/kernel/efi-header.S | 100 ++ > arch/loongarch/kernel/efi.c | 235 +++ > arch/loongarch/kernel/elf.c | 30 + > arch/loongarch/kernel/entry.S | 89 ++ > arch/loongarch/kernel/env.c | 176 +++ > arch/loongarch/kernel/fpu.S | 264 ++++ > arch/loongarch/kernel/genex.S | 95 ++ > arch/loongarch/kernel/head.S | 144 ++ > arch/loongarch/kernel/idle.c | 16 + > arch/loongarch/kernel/image-vars.h | 30 + > arch/loongarch/kernel/inst.c | 40 + > arch/loongarch/kernel/io.c | 94 ++ > arch/loongarch/kernel/irq.c | 140 ++ > arch/loongarch/kernel/mem.c | 83 ++ > arch/loongarch/kernel/module-sections.c | 121 ++ > arch/loongarch/kernel/module.c | 385 +++++ > arch/loongarch/kernel/numa.c | 461 ++++++ > arch/loongarch/kernel/proc.c | 127 ++ > arch/loongarch/kernel/process.c | 267 ++++ > arch/loongarch/kernel/ptrace.c | 431 ++++++ > arch/loongarch/kernel/reset.c | 102 ++ > arch/loongarch/kernel/rtc.c | 36 + > arch/loongarch/kernel/setup.c | 464 ++++++ > arch/loongarch/kernel/signal.c | 568 ++++++++ > arch/loongarch/kernel/smp.c | 762 ++++++++++ > arch/loongarch/kernel/switch.S | 35 + > arch/loongarch/kernel/syscall.c | 63 + > arch/loongarch/kernel/time.c | 220 +++ > arch/loongarch/kernel/topology.c | 52 + > arch/loongarch/kernel/traps.c | 753 ++++++++++ > arch/loongarch/kernel/vdso.c | 138 ++ > arch/loongarch/kernel/vmlinux.lds.S | 121 ++ > arch/loongarch/lib/Makefile | 7 + > arch/loongarch/lib/clear_user.S | 43 + > arch/loongarch/lib/copy_user.S | 47 + > arch/loongarch/lib/delay.c | 43 + > arch/loongarch/lib/dump_tlb.c | 111 ++ > arch/loongarch/lib/memcpy.S | 32 + > arch/loongarch/lib/memmove.S | 45 + > arch/loongarch/lib/memset.S | 30 + > arch/loongarch/mm/Makefile | 9 + > arch/loongarch/mm/cache.c | 140 ++ > arch/loongarch/mm/extable.c | 22 + > arch/loongarch/mm/fault.c | 261 ++++ > arch/loongarch/mm/hugetlbpage.c | 87 ++ > arch/loongarch/mm/init.c | 178 +++ > arch/loongarch/mm/ioremap.c | 27 + > arch/loongarch/mm/maccess.c | 10 + > arch/loongarch/mm/mmap.c | 125 ++ > arch/loongarch/mm/page.S | 84 ++ > arch/loongarch/mm/pgtable.c | 130 ++ > arch/loongarch/mm/tlb.c | 303 ++++ > arch/loongarch/mm/tlbex.S | 546 +++++++ > arch/loongarch/pci/Makefile | 7 + > arch/loongarch/pci/acpi.c | 175 +++ > arch/loongarch/pci/pci.c | 98 ++ > arch/loongarch/tools/Makefile | 15 + > arch/loongarch/tools/calc_vmlinuz_load_addr.c | 51 + > arch/loongarch/tools/elf-entry.c | 66 + > arch/loongarch/vdso/Makefile | 96 ++ > arch/loongarch/vdso/elf.S | 15 + > arch/loongarch/vdso/gen_vdso_offsets.sh | 13 + > arch/loongarch/vdso/sigreturn.S | 24 + > arch/loongarch/vdso/vdso.S | 22 + > arch/loongarch/vdso/vdso.lds.S | 72 + > arch/loongarch/vdso/vgettimeofday.c | 25 + > drivers/firmware/efi/Kconfig | 4 +- > drivers/firmware/efi/libstub/Makefile | 14 +- > drivers/firmware/efi/libstub/loongarch-stub.c | 425 ++++++ > drivers/gpu/drm/drm_vm.c | 2 +- > drivers/gpu/drm/ttm/ttm_module.c | 2 +- > include/drm/drm_cache.h | 8 + > include/linux/cpuhotplug.h | 1 + > include/linux/efi.h | 1 + > include/linux/pe.h | 1 + > include/uapi/linux/audit.h | 2 + > include/uapi/linux/elf-em.h | 1 + > include/uapi/linux/elf.h | 5 + > include/uapi/linux/kexec.h | 1 + > scripts/sorttable.c | 5 + > scripts/subarch.include | 2 +- > tools/include/uapi/asm/bitsperlong.h | 2 + > 230 files changed, 23918 insertions(+), 7 deletions(-) > create mode 100644 Documentation/loongarch/features.rst > create mode 100644 Documentation/loongarch/index.rst > create mode 100644 Documentation/loongarch/introduction.rst > create mode 100644 Documentation/loongarch/irq-chip-model.rst > create mode 100644 Documentation/translations/zh_CN/loongarch/features.rst > create mode 100644 Documentation/translations/zh_CN/loongarch/index.rst > create mode 100644 Documentation/translations/zh_CN/loongarch/introduction.rst > create mode 100644 Documentation/translations/zh_CN/loongarch/irq-chip-model.rst > create mode 100644 arch/loongarch/.gitignore > create mode 100644 arch/loongarch/Kbuild > create mode 100644 arch/loongarch/Kconfig > create mode 100644 arch/loongarch/Kconfig.debug > create mode 100644 arch/loongarch/Makefile > create mode 100644 arch/loongarch/boot/Makefile > create mode 100644 arch/loongarch/boot/boot.lds.S > create mode 100644 arch/loongarch/boot/decompress.c > create mode 100644 arch/loongarch/boot/string.c > create mode 100644 arch/loongarch/boot/zheader.S > create mode 100644 arch/loongarch/boot/zkernel.S > create mode 100644 arch/loongarch/configs/loongson3_defconfig > create mode 100644 arch/loongarch/include/asm/Kbuild > create mode 100644 arch/loongarch/include/asm/acenv.h > create mode 100644 arch/loongarch/include/asm/acpi.h > create mode 100644 arch/loongarch/include/asm/addrspace.h > create mode 100644 arch/loongarch/include/asm/asm-offsets.h > create mode 100644 arch/loongarch/include/asm/asm-prototypes.h > create mode 100644 arch/loongarch/include/asm/asm.h > create mode 100644 arch/loongarch/include/asm/asmmacro.h > create mode 100644 arch/loongarch/include/asm/atomic.h > create mode 100644 arch/loongarch/include/asm/barrier.h > create mode 100644 arch/loongarch/include/asm/bitops.h > create mode 100644 arch/loongarch/include/asm/bitrev.h > create mode 100644 arch/loongarch/include/asm/boot_param.h > create mode 100644 arch/loongarch/include/asm/bootinfo.h > create mode 100644 arch/loongarch/include/asm/branch.h > create mode 100644 arch/loongarch/include/asm/bug.h > create mode 100644 arch/loongarch/include/asm/cache.h > create mode 100644 arch/loongarch/include/asm/cacheflush.h > create mode 100644 arch/loongarch/include/asm/cacheops.h > create mode 100644 arch/loongarch/include/asm/clocksource.h > create mode 100644 arch/loongarch/include/asm/cmpxchg.h > create mode 100644 arch/loongarch/include/asm/compiler.h > create mode 100644 arch/loongarch/include/asm/cpu-features.h > create mode 100644 arch/loongarch/include/asm/cpu-info.h > create mode 100644 arch/loongarch/include/asm/cpu.h > create mode 100644 arch/loongarch/include/asm/cpufeature.h > create mode 100644 arch/loongarch/include/asm/delay.h > create mode 100644 arch/loongarch/include/asm/dma-direct.h > create mode 100644 arch/loongarch/include/asm/dma.h > create mode 100644 arch/loongarch/include/asm/dmi.h > create mode 100644 arch/loongarch/include/asm/efi.h > create mode 100644 arch/loongarch/include/asm/elf.h > create mode 100644 arch/loongarch/include/asm/entry-common.h > create mode 100644 arch/loongarch/include/asm/exec.h > create mode 100644 arch/loongarch/include/asm/fb.h > create mode 100644 arch/loongarch/include/asm/fixmap.h > create mode 100644 arch/loongarch/include/asm/fpregdef.h > create mode 100644 arch/loongarch/include/asm/fpu.h > create mode 100644 arch/loongarch/include/asm/futex.h > create mode 100644 arch/loongarch/include/asm/fw.h > create mode 100644 arch/loongarch/include/asm/hardirq.h > create mode 100644 arch/loongarch/include/asm/hugetlb.h > create mode 100644 arch/loongarch/include/asm/hw_irq.h > create mode 100644 arch/loongarch/include/asm/idle.h > create mode 100644 arch/loongarch/include/asm/inst.h > create mode 100644 arch/loongarch/include/asm/io.h > create mode 100644 arch/loongarch/include/asm/irq.h > create mode 100644 arch/loongarch/include/asm/irq_regs.h > create mode 100644 arch/loongarch/include/asm/irqflags.h > create mode 100644 arch/loongarch/include/asm/kdebug.h > create mode 100644 arch/loongarch/include/asm/linkage.h > create mode 100644 arch/loongarch/include/asm/local.h > create mode 100644 arch/loongarch/include/asm/loongarch.h > create mode 100644 arch/loongarch/include/asm/loongson.h > create mode 100644 arch/loongarch/include/asm/mmu.h > create mode 100644 arch/loongarch/include/asm/mmu_context.h > create mode 100644 arch/loongarch/include/asm/mmzone.h > create mode 100644 arch/loongarch/include/asm/module.h > create mode 100644 arch/loongarch/include/asm/module.lds.h > create mode 100644 arch/loongarch/include/asm/numa.h > create mode 100644 arch/loongarch/include/asm/page.h > create mode 100644 arch/loongarch/include/asm/pci.h > create mode 100644 arch/loongarch/include/asm/percpu.h > create mode 100644 arch/loongarch/include/asm/perf_event.h > create mode 100644 arch/loongarch/include/asm/pgalloc.h > create mode 100644 arch/loongarch/include/asm/pgtable-bits.h > create mode 100644 arch/loongarch/include/asm/pgtable.h > create mode 100644 arch/loongarch/include/asm/prefetch.h > create mode 100644 arch/loongarch/include/asm/processor.h > create mode 100644 arch/loongarch/include/asm/ptrace.h > create mode 100644 arch/loongarch/include/asm/reboot.h > create mode 100644 arch/loongarch/include/asm/regdef.h > create mode 100644 arch/loongarch/include/asm/seccomp.h > create mode 100644 arch/loongarch/include/asm/serial.h > create mode 100644 arch/loongarch/include/asm/setup.h > create mode 100644 arch/loongarch/include/asm/shmparam.h > create mode 100644 arch/loongarch/include/asm/smp.h > create mode 100644 arch/loongarch/include/asm/sparsemem.h > create mode 100644 arch/loongarch/include/asm/spinlock.h > create mode 100644 arch/loongarch/include/asm/spinlock_types.h > create mode 100644 arch/loongarch/include/asm/stackframe.h > create mode 100644 arch/loongarch/include/asm/stacktrace.h > create mode 100644 arch/loongarch/include/asm/string.h > create mode 100644 arch/loongarch/include/asm/switch_to.h > create mode 100644 arch/loongarch/include/asm/syscall.h > create mode 100644 arch/loongarch/include/asm/thread_info.h > create mode 100644 arch/loongarch/include/asm/time.h > create mode 100644 arch/loongarch/include/asm/timex.h > create mode 100644 arch/loongarch/include/asm/tlb.h > create mode 100644 arch/loongarch/include/asm/tlbflush.h > create mode 100644 arch/loongarch/include/asm/topology.h > create mode 100644 arch/loongarch/include/asm/types.h > create mode 100644 arch/loongarch/include/asm/uaccess.h > create mode 100644 arch/loongarch/include/asm/unistd.h > create mode 100644 arch/loongarch/include/asm/vdso.h > create mode 100644 arch/loongarch/include/asm/vdso/clocksource.h > create mode 100644 arch/loongarch/include/asm/vdso/gettimeofday.h > create mode 100644 arch/loongarch/include/asm/vdso/processor.h > create mode 100644 arch/loongarch/include/asm/vdso/vdso.h > create mode 100644 arch/loongarch/include/asm/vdso/vsyscall.h > create mode 100644 arch/loongarch/include/asm/vermagic.h > create mode 100644 arch/loongarch/include/asm/vmalloc.h > create mode 100644 arch/loongarch/include/uapi/asm/Kbuild > create mode 100644 arch/loongarch/include/uapi/asm/auxvec.h > create mode 100644 arch/loongarch/include/uapi/asm/bitfield.h > create mode 100644 arch/loongarch/include/uapi/asm/bitsperlong.h > create mode 100644 arch/loongarch/include/uapi/asm/break.h > create mode 100644 arch/loongarch/include/uapi/asm/byteorder.h > create mode 100644 arch/loongarch/include/uapi/asm/hwcap.h > create mode 100644 arch/loongarch/include/uapi/asm/inst.h > create mode 100644 arch/loongarch/include/uapi/asm/ptrace.h > create mode 100644 arch/loongarch/include/uapi/asm/reg.h > create mode 100644 arch/loongarch/include/uapi/asm/sigcontext.h > create mode 100644 arch/loongarch/include/uapi/asm/signal.h > create mode 100644 arch/loongarch/include/uapi/asm/swab.h > create mode 100644 arch/loongarch/include/uapi/asm/ucontext.h > create mode 100644 arch/loongarch/include/uapi/asm/unistd.h > create mode 100644 arch/loongarch/kernel/Makefile > create mode 100644 arch/loongarch/kernel/access-helper.h > create mode 100644 arch/loongarch/kernel/acpi.c > create mode 100644 arch/loongarch/kernel/asm-offsets.c > create mode 100644 arch/loongarch/kernel/cacheinfo.c > create mode 100644 arch/loongarch/kernel/cmdline.c > create mode 100644 arch/loongarch/kernel/cmpxchg.c > create mode 100644 arch/loongarch/kernel/cpu-probe.c > create mode 100644 arch/loongarch/kernel/dma.c > create mode 100644 arch/loongarch/kernel/efi-header.S > create mode 100644 arch/loongarch/kernel/efi.c > create mode 100644 arch/loongarch/kernel/elf.c > create mode 100644 arch/loongarch/kernel/entry.S > create mode 100644 arch/loongarch/kernel/env.c > create mode 100644 arch/loongarch/kernel/fpu.S > create mode 100644 arch/loongarch/kernel/genex.S > create mode 100644 arch/loongarch/kernel/head.S > create mode 100644 arch/loongarch/kernel/idle.c > create mode 100644 arch/loongarch/kernel/image-vars.h > create mode 100644 arch/loongarch/kernel/inst.c > create mode 100644 arch/loongarch/kernel/io.c > create mode 100644 arch/loongarch/kernel/irq.c > create mode 100644 arch/loongarch/kernel/mem.c > create mode 100644 arch/loongarch/kernel/module-sections.c > create mode 100644 arch/loongarch/kernel/module.c > create mode 100644 arch/loongarch/kernel/numa.c > create mode 100644 arch/loongarch/kernel/proc.c > create mode 100644 arch/loongarch/kernel/process.c > create mode 100644 arch/loongarch/kernel/ptrace.c > create mode 100644 arch/loongarch/kernel/reset.c > create mode 100644 arch/loongarch/kernel/rtc.c > create mode 100644 arch/loongarch/kernel/setup.c > create mode 100644 arch/loongarch/kernel/signal.c > create mode 100644 arch/loongarch/kernel/smp.c > create mode 100644 arch/loongarch/kernel/switch.S > create mode 100644 arch/loongarch/kernel/syscall.c > create mode 100644 arch/loongarch/kernel/time.c > create mode 100644 arch/loongarch/kernel/topology.c > create mode 100644 arch/loongarch/kernel/traps.c > create mode 100644 arch/loongarch/kernel/vdso.c > create mode 100644 arch/loongarch/kernel/vmlinux.lds.S > create mode 100644 arch/loongarch/lib/Makefile > create mode 100644 arch/loongarch/lib/clear_user.S > create mode 100644 arch/loongarch/lib/copy_user.S > create mode 100644 arch/loongarch/lib/delay.c > create mode 100644 arch/loongarch/lib/dump_tlb.c > create mode 100644 arch/loongarch/lib/memcpy.S > create mode 100644 arch/loongarch/lib/memmove.S > create mode 100644 arch/loongarch/lib/memset.S > create mode 100644 arch/loongarch/mm/Makefile > create mode 100644 arch/loongarch/mm/cache.c > create mode 100644 arch/loongarch/mm/extable.c > create mode 100644 arch/loongarch/mm/fault.c > create mode 100644 arch/loongarch/mm/hugetlbpage.c > create mode 100644 arch/loongarch/mm/init.c > create mode 100644 arch/loongarch/mm/ioremap.c > create mode 100644 arch/loongarch/mm/maccess.c > create mode 100644 arch/loongarch/mm/mmap.c > create mode 100644 arch/loongarch/mm/page.S > create mode 100644 arch/loongarch/mm/pgtable.c > create mode 100644 arch/loongarch/mm/tlb.c > create mode 100644 arch/loongarch/mm/tlbex.S > create mode 100644 arch/loongarch/pci/Makefile > create mode 100644 arch/loongarch/pci/acpi.c > create mode 100644 arch/loongarch/pci/pci.c > create mode 100644 arch/loongarch/tools/Makefile > create mode 100644 arch/loongarch/tools/calc_vmlinuz_load_addr.c > create mode 100644 arch/loongarch/tools/elf-entry.c > create mode 100644 arch/loongarch/vdso/Makefile > create mode 100644 arch/loongarch/vdso/elf.S > create mode 100755 arch/loongarch/vdso/gen_vdso_offsets.sh > create mode 100644 arch/loongarch/vdso/sigreturn.S > create mode 100644 arch/loongarch/vdso/vdso.S > create mode 100644 arch/loongarch/vdso/vdso.lds.S > create mode 100644 arch/loongarch/vdso/vgettimeofday.c > create mode 100644 drivers/firmware/efi/libstub/loongarch-stub.c > -- > 2.27.0 > So I've just gone through the entire patch series and made my comments... I've posted some of my suggested changes as a GitHub PR to your fork [1], for your review convenience. And, one more thing -- putting on my Gentoo hat -- we already have a real Linux distribution to test all of this! A previous revision of this port is already integrated into the main Gentoo tree (albeit only providing headers, via the sys-kernel/linux-headers package), and a great number of packages can already be built and confirmed working, with the WIP glibc port from Loongson [2] also integrated. We also have built complete Gentoo stage3 tarballs for testing, available at the Gentoo mirrors [3]; these are self-hosting sysroots that can be used natively, or chroot-ed into with help of qemu-user. More information can be found at the Gentoo/LoongArch project page [4]. However (taking off my Gentoo hat again), for now people outside Loongson cannot actually run the kernel on their boxes, because of the changed boot protocol. Elegant as it is, it's incompatible with existing firmware and grub, so perhaps someone (preferably from Loongson) could provide a way for community members to migrate to the new boot protocol, or even better, just provide firmware upgrades to the new world. This way we could have wider testing which can only be beneficial for a new port like this. Here's hoping the port will take off in v5.19! [1]: https://github.com/loongson/linux/pull/2 [2]: https://github.com/loongson/glibc/tree/loongarch_2_36_upstream_v4 [3]: https://bouncer.gentoo.org/fetch/root/all/experimental/loong/stages [4]: https://wiki.gentoo.org/wiki/Project:LoongArch