On Fri, Apr 29, 2022 at 2:22 AM Palmer Dabbelt <palmer@xxxxxxxxxxx> wrote: > > On Thu, 28 Apr 2022 05:25:19 PDT (-0700), guoren@xxxxxxxxxx wrote: > > Hi Palmer, > > > > I see you have taken v12 into your riscv-compat branch and added > > asm/signal32.h. Do you need me help put compat_sigcontext & > > compat_ucontext & compat_rt_sigframe into signal32.h? And could we > > rename signal32.h to compat_signal.h to match compat_signal.c? > > > > In the end, thx for taking care of compat patch series. > > No problem. I was just trying to get something clean through all the > autobuilders before making it look good, I think it didn't fail this > time so I'll do a bit more refactoring. Shouldn't be too much longer at > this point. Cool, thank you. Hope it could be in v5.19. > > > > > > > On Tue, Apr 5, 2022 at 3:13 PM <guoren@xxxxxxxxxx> wrote: > >> > >> From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> > >> > >> Currently, most 64-bit architectures (x86, parisc, powerpc, arm64, > >> s390, mips, sparc) have supported COMPAT mode. But they all have > >> history issues and can't use standard linux unistd.h. RISC-V would > >> be first standard __SYSCALL_COMPAT user of include/uapi/asm-generic > >> /unistd.h. > >> > >> The patchset are based on v5.18-rc1, you can compare rv64-compat > >> v.s. rv32-native in qemu with following steps: > >> > >> - Prepare rv32 rootfs & fw_jump.bin by buildroot.org > >> $ git clone git://git.busybox.net/buildroot > >> $ cd buildroot > >> $ make qemu_riscv32_virt_defconfig O=qemu_riscv32_virt_defconfig > >> $ make -C qemu_riscv32_virt_defconfig > >> $ make qemu_riscv64_virt_defconfig O=qemu_riscv64_virt_defconfig > >> $ make -C qemu_riscv64_virt_defconfig > >> (Got fw_jump.bin & rootfs.ext2 in qemu_riscvXX_virt_defconfig/images) > >> > >> - Prepare Linux rv32 & rv64 Image > >> $ git clone git@xxxxxxxxxx:c-sky/csky-linux.git -b riscv_compat_v12 linux > >> $ cd linux > >> $ echo "CONFIG_STRICT_KERNEL_RWX=n" >> arch/riscv/configs/defconfig > >> $ echo "CONFIG_STRICT_MODULE_RWX=n" >> arch/riscv/configs/defconfig > >> $ make ARCH=riscv CROSS_COMPILE=riscv32-buildroot-linux-gnu- O=../build-rv32/ rv32_defconfig > >> $ make ARCH=riscv CROSS_COMPILE=riscv32-buildroot-linux-gnu- O=../build-rv32/ Image > >> $ make ARCH=riscv CROSS_COMPILE=riscv64-buildroot-linux-gnu- O=../build-rv64/ defconfig > >> $ make ARCH=riscv CROSS_COMPILE=riscv64-buildroot-linux-gnu- O=../build-rv64/ Image > >> > >> - Prepare Qemu: > >> $ git clone https://gitlab.com/qemu-project/qemu.git -b master linux > >> $ cd qemu > >> $ ./configure --target-list="riscv64-softmmu riscv32-softmmu" > >> $ make > >> > >> Now let's compare rv64-compat with rv32-native memory footprint with almost the same > >> defconfig, rootfs, opensbi in one qemu. > >> > >> - Run rv64 with rv32 rootfs in compat mode: > >> $ ./build/qemu-system-riscv64 -cpu rv64 -M virt -m 64m -nographic -bios qemu_riscv64_virt_defconfig/images/fw_jump.bin -kernel build-rv64/Image -drive file qemu_riscv32_virt_defconfig/images/rootfs.ext2,format=raw,id=hd0 -device virtio-blk-device,drive=hd0 -append "rootwait root=/dev/vda ro console=ttyS0 earlycon=sbi" -netdev user,id=net0 -device virtio-net-device,netdev=net0 > >> > >> QEMU emulator version 6.2.50 (v6.2.0-29-g196d7182c8) > >> OpenSBI v0.9 > >> [ 0.000000] Linux version 5.16.0-rc6-00017-g750f87086bdd-dirty (guoren@guoren-Z87-HD3) (riscv64-unknown-linux-gnu-gcc (GCC) 10.2.0, GNU ld (GNU Binutils) 2.37) #96 SMP Tue Dec 28 21:01:55 CST 2021 > >> [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80200000 > >> [ 0.000000] Machine model: riscv-virtio,qemu > >> [ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '') > >> [ 0.000000] printk: bootconsole [sbi0] enabled > >> [ 0.000000] efi: UEFI not found. > >> [ 0.000000] Zone ranges: > >> [ 0.000000] DMA32 [mem 0x0000000080200000-0x0000000083ffffff] > >> [ 0.000000] Normal empty > >> [ 0.000000] Movable zone start for each node > >> [ 0.000000] Early memory node ranges > >> [ 0.000000] node 0: [mem 0x0000000080200000-0x0000000083ffffff] > >> [ 0.000000] Initmem setup node 0 [mem 0x0000000080200000-0x0000000083ffffff] > >> [ 0.000000] SBI specification v0.2 detected > >> [ 0.000000] SBI implementation ID=0x1 Version=0x9 > >> [ 0.000000] SBI TIME extension detected > >> [ 0.000000] SBI IPI extension detected > >> [ 0.000000] SBI RFENCE extension detected > >> [ 0.000000] SBI v0.2 HSM extension detected > >> [ 0.000000] riscv: ISA extensions acdfhimsu > >> [ 0.000000] riscv: ELF capabilities acdfim > >> [ 0.000000] percpu: Embedded 17 pages/cpu s30696 r8192 d30744 u69632 > >> [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 15655 > >> [ 0.000000] Kernel command line: rootwait root=/dev/vda ro console=ttyS0 earlycon=sbi > >> [ 0.000000] Dentry cache hash table entries: 8192 (order: 4, 65536 bytes, linear) > >> [ 0.000000] Inode-cache hash table entries: 4096 (order: 3, 32768 bytes, linear) > >> [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off > >> [ 0.000000] Virtual kernel memory layout: > >> [ 0.000000] fixmap : 0xffffffcefee00000 - 0xffffffceff000000 (2048 kB) > >> [ 0.000000] pci io : 0xffffffceff000000 - 0xffffffcf00000000 ( 16 MB) > >> [ 0.000000] vmemmap : 0xffffffcf00000000 - 0xffffffcfffffffff (4095 MB) > >> [ 0.000000] vmalloc : 0xffffffd000000000 - 0xffffffdfffffffff (65535 MB) > >> [ 0.000000] lowmem : 0xffffffe000000000 - 0xffffffe003e00000 ( 62 MB) > >> [ 0.000000] kernel : 0xffffffff80000000 - 0xffffffffffffffff (2047 MB) > >> [ 0.000000] Memory: 52788K/63488K available (6184K kernel code, 888K rwdata, 1917K rodata, 294K init, 297K bss, 10700K reserved, 0K cma-reserved) > >> [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 > >> [ 0.000000] rcu: Hierarchical RCU implementation. > >> [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1. > >> [ 0.000000] rcu: RCU debug extended QS entry/exit. > >> [ 0.000000] Tracing variant of Tasks RCU enabled. > >> [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. > >> [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 > >> [ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 > >> [ 0.000000] riscv-intc: 64 local interrupts mapped > >> [ 0.000000] plic: plic@c000000: mapped 53 interrupts with 1 handlers for 2 contexts. > >> ... > >> Welcome to Buildroot > >> buildroot login: root > >> # cat /proc/cpuinfo > >> processor : 0 > >> hart : 0 > >> isa : rv64imafdcsuh > >> mmu : sv48 > >> > >> # file /bin/busybox > >> /bin/busybox: setuid ELF 32-bit LSB shared object, UCB RISC-V, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-riscv32-ilp32d.so.1, for GNU/Linux 5.15.0, stripped > >> # ca[ 78.386630] random: fast init done > >> # cat /proc/meminfo > >> MemTotal: 53076 kB > >> MemFree: 40264 kB > >> MemAvailable: 40244 kB > >> Buffers: 236 kB > >> Cached: 1560 kB > >> SwapCached: 0 kB > >> Active: 1700 kB > >> Inactive: 516 kB > >> Active(anon): 40 kB > >> Inactive(anon): 424 kB > >> Active(file): 1660 kB > >> Inactive(file): 92 kB > >> Unevictable: 0 kB > >> Mlocked: 0 kB > >> SwapTotal: 0 kB > >> SwapFree: 0 kB > >> Dirty: 0 kB > >> Writeback: 0 kB > >> AnonPages: 444 kB > >> Mapped: 1188 kB > >> Shmem: 44 kB > >> KReclaimable: 952 kB > >> Slab: 5744 kB > >> SReclaimable: 952 kB > >> SUnreclaim: 4792 kB > >> KernelStack: 624 kB > >> PageTables: 156 kB > >> NFS_Unstable: 0 kB > >> Bounce: 0 kB > >> WritebackTmp: 0 kB > >> CommitLimit: 26536 kB > >> Committed_AS: 1748 kB > >> VmallocTotal: 67108863 kB > >> VmallocUsed: 652 kB > >> VmallocChunk: 0 kB > >> Percpu: 80 kB > >> # > >> > >> - Run rv32 with rv32 rootfs: > >> $ ./build/qemu-system-riscv32 -cpu rv32 -M virt -m 64m -nographic -bios qemu_riscv32_virt_defconfig/images/fw_jump.bin -kernel build-rv32/Image -drive file qemu_riscv32_virt_defconfig/images/rootfs.ext2,format=raw,id=hd0 -device virtio-blk-device,drive=hd0 -append "rootwait root=/dev/vda ro console=ttyS0 earlycon=sbi" -netdev user,id=net0 -device virtio-net-device,netdev=net0 > >> > >> QEMU emulator version 6.2.50 (v6.2.0-29-g196d7182c8) > >> OpenSBI v0.9 > >> [ 0.000000] Linux version 5.16.0-rc6-00017-g750f87086bdd-dirty (guoren@guoren-Z87-HD3) (riscv32-buildroot-linux-gnu-gcc.br_real (Buildroot 2021.11-201-g7600ca7960-dirty) 10.3.0, GNU ld (GNU Binutils) 2.36.1) #7 SMP Tue Dec 28 21:02:21 CST 2021 > >> [ 0.000000] OF: fdt: Ignoring memory range 0x80000000 - 0x80400000 > >> [ 0.000000] Machine model: riscv-virtio,qemu > >> [ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '') > >> [ 0.000000] printk: bootconsole [sbi0] enabled > >> [ 0.000000] efi: UEFI not found. > >> [ 0.000000] Zone ranges: > >> [ 0.000000] Normal [mem 0x0000000080400000-0x0000000083ffffff] > >> [ 0.000000] Movable zone start for each node > >> [ 0.000000] Early memory node ranges > >> [ 0.000000] node 0: [mem 0x0000000080400000-0x0000000083ffffff] > >> [ 0.000000] Initmem setup node 0 [mem 0x0000000080400000-0x0000000083ffffff] > >> [ 0.000000] SBI specification v0.2 detected > >> [ 0.000000] SBI implementation ID=0x1 Version=0x9 > >> [ 0.000000] SBI TIME extension detected > >> [ 0.000000] SBI IPI extension detected > >> [ 0.000000] SBI RFENCE extension detected > >> [ 0.000000] SBI v0.2 HSM extension detected > >> [ 0.000000] riscv: ISA extensions acdfhimsu > >> [ 0.000000] riscv: ELF capabilities acdfim > >> [ 0.000000] percpu: Embedded 12 pages/cpu s16600 r8192 d24360 u49152 > >> [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 15240 > >> [ 0.000000] Kernel command line: rootwait root=/dev/vda ro console=ttyS0 earlycon=sbi > >> [ 0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes, linear) > >> [ 0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes, linear) > >> [ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off > >> [ 0.000000] Virtual kernel memory layout: > >> [ 0.000000] fixmap : 0x9dc00000 - 0x9e000000 (4096 kB) > >> [ 0.000000] pci io : 0x9e000000 - 0x9f000000 ( 16 MB) > >> [ 0.000000] vmemmap : 0x9f000000 - 0x9fffffff ( 15 MB) > >> [ 0.000000] vmalloc : 0xa0000000 - 0xbfffffff ( 511 MB) > >> [ 0.000000] lowmem : 0xc0000000 - 0xc3c00000 ( 60 MB) > >> [ 0.000000] Memory: 51924K/61440K available (6117K kernel code, 695K rwdata, 1594K rodata, 255K init, 241K bss, 9516K reserved, 0K cma-reserved) > >> [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 > >> [ 0.000000] rcu: Hierarchical RCU implementation. > >> [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=1. > >> [ 0.000000] rcu: RCU debug extended QS entry/exit. > >> [ 0.000000] Tracing variant of Tasks RCU enabled. > >> [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies. > >> [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1 > >> [ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 > >> [ 0.000000] riscv-intc: 32 local interrupts mapped > >> [ 0.000000] plic: plic@c000000: mapped 53 interrupts with 1 handlers for 2 contexts. > >> ... > >> Welcome to Buildroot > >> buildroot login: root > >> # cat /proc/cpuinfo > >> processor : 0 > >> hart : 0 > >> isa : rv32imafdcsuh > >> mmu : sv32 > >> > >> # file /bin/busybox > >> /bin/busybox: setuid ELF 32-bit LSB shared object, UCB RISC-V, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-riscv32-ilp32d.so.1, for GNU/Linux 5.15.0, stripped > >> [ 79.320589] random: fast init done > >> # cat /proc/meminfo > >> MemTotal: 52176 kB > >> MemFree: 41012 kB > >> MemAvailable: 42176 kB > >> Buffers: 644 kB > >> Cached: 2724 kB > >> SwapCached: 0 kB > >> Active: 3128 kB > >> Inactive: 752 kB > >> Active(anon): 40 kB > >> Inactive(anon): 516 kB > >> Active(file): 3088 kB > >> Inactive(file): 236 kB > >> Unevictable: 0 kB > >> Mlocked: 0 kB > >> SwapTotal: 0 kB > >> SwapFree: 0 kB > >> Dirty: 4 kB > >> Writeback: 0 kB > >> AnonPages: 556 kB > >> Mapped: 2172 kB > >> Shmem: 44 kB > >> KReclaimable: 656 kB > >> Slab: 3684 kB > >> SReclaimable: 656 kB > >> SUnreclaim: 3028 kB > >> KernelStack: 312 kB > >> PageTables: 88 kB > >> NFS_Unstable: 0 kB > >> Bounce: 0 kB > >> WritebackTmp: 0 kB > >> CommitLimit: 26088 kB > >> Committed_AS: 2088 kB > >> VmallocTotal: 524287 kB > >> VmallocUsed: 12 kB > >> VmallocChunk: 0 kB > >> Percpu: 60 kB > >> # > >> > >> Some conclusions: > >> - kernel statics: > >> 64: Memory: 52788K/63488K available (6184K kernel code, 888K rwdata, 1917K rodata, 294K init, 297K bss, 10700K reserved) > >> 32: Memory: 51924K/61440K available (6117K kernel code, 695K rwdata, 1594K rodata, 255K init, 241K bss, 9516K reserved) > >> rv32 better than rv64: 1% 22% 17% 13% 19% 11% > >> The code size is very similar, but data size rv32 would be better. > >> > >> - rv32 kernel runtime KernelStack, Slab... are smaller, > >> rv64: MemTotal: 53076 kB, MemFree: 40264 kB > >> rv32: MemTotal: 52176 + 2048 kB, MemFree: 41012 + 2048 kB > >> rv32 better than rv64: 2% 6% > >> > >> (Because opensbi problem, we could add another 2MB for rv32.) > >> Overall in 64MB memory situation, rv64-compat is 6% worse than rv32-native > >> at memory footprint. If the userspace memory usage increases, I think > >> the gap will be further reduced. > >> > >> Changes in v12: > >> - Rebase on 5.18-rc1 > >> - Fixup compile conflicts with 5.18-rc1 > >> - Fixup $(srctree) == $(objtree) compile error reported by Nathan > >> > >> Changes in v11: > >> - Using arch instead of kconfig for commit subject by Masahiro Yamada > >> > >> Changes in v10: > >> - Fixup arm64 compile error with compat_statfs definition > >> - Fixup compat_sys_fadvise64_64 function arguments error cause ltp failure > >> > >> Changes in v9: > >> - Fixup rv32 call rv64 segment fault > >> - Ready for 5.18 > >> > >> Changes in v8: > >> - Enhanced elf_check_arch with EI_CLASS > >> - Fixup SR_UXL doesn't exist in CONFIG_32BIT > >> - Add Tested-by with Heiko > >> - Update qemu compile tips with upstream repo > >> > >> Changes in v7: > >> - Re-construct compat_vdso/Makefile > >> - Fixup disable COMPAT compile error by csr.h's macro. > >> - Optimize coding convention for lo/hi in compat.h > >> > >> Changes in v6: > >> - Rebase on linux-5.17-rc5 > >> - Optimize hw capability check for elf > >> - Optimize comment in thread_info.h > >> - Optimize start_thread with SR_UXL setting > >> - Optimize vdso.c with direct panic > >> > >> Changes in v5: > >> - Rebase on linux-5.17-rc2 > >> - Include consolidate the fcntl patches by Christoph Hellwig > >> - Remove F_GETLK64/F_SETLK64/F_SETLKW64 from asm/compat.h > >> - Change COMPAT_RLIM_INFINITY from 0x7fffffff to 0xffffffff > >> - Bring back "Add hw-cap detect in setup_arch patch" in v1 > >> > >> Changes in v4: > >> - Rebase on linux-5.17-rc1 > >> - Optimize compat_sys_call_table implementation with Arnd's advice > >> - Add reviewed-by for Arnd. Thx :) > >> - Remove FIXME comment in elf.h > >> - Optimize Cleanup duplicate definitions in compat.h with Arnd's advice > >> > >> Changes in v3: > >> - Rebase on newest master (pre linux-5.17-rc1) > >> - Using newest qemu version v7 for test > >> - Remove fcntl common modification > >> - Fixup SET_PERSONALITY in elf.h by Arnd > >> - Fixup KVM Kconfig > >> - Update Acked-by & Reviewed-by > >> > >> Changes in v2: > >> - Add __ARCH_WANT_COMPAT_STAT suggested > >> - Cleanup fcntl compatduplicate definitions > >> - Cleanup compat.h > >> - Move rv32_defconfig into Makefile > >> - Fixup rv64 rootfs boot failed, remove hw_compat_mode_detect > >> - Move SYSVIPC_COMPAT into init/Kconfig > >> - Simplify compat_elf_check > >> > >> Christoph Hellwig (3): > >> uapi: simplify __ARCH_FLOCK{,64}_PAD a little > >> uapi: always define F_GETLK64/F_SETLK64/F_SETLKW64 in fcntl.h > >> compat: consolidate the compat_flock{,64} definition > >> > >> Guo Ren (17): > >> arch: Add SYSVIPC_COMPAT for all architectures > >> fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT > >> asm-generic: compat: Cleanup duplicate definitions > >> syscalls: compat: Fix the missing part for __SYSCALL_COMPAT > >> riscv: Fixup difference with defconfig > >> riscv: compat: Add basic compat data type implementation > >> riscv: compat: Support TASK_SIZE for compat mode > >> riscv: compat: syscall: Add compat_sys_call_table implementation > >> riscv: compat: syscall: Add entry.S implementation > >> riscv: compat: process: Add UXL_32 support in start_thread > >> riscv: compat: Add elf.h implementation > >> riscv: compat: Add hw capability check for elf > >> riscv: compat: vdso: Add COMPAT_VDSO base code implementation > >> riscv: compat: vdso: Add setup additional pages implementation > >> riscv: compat: signal: Add rt_frame implementation > >> riscv: compat: ptrace: Add compat_arch_ptrace implement > >> riscv: compat: Add COMPAT Kbuild skeletal support > >> > >> arch/arm64/Kconfig | 4 - > >> arch/arm64/include/asm/compat.h | 93 +------ > >> arch/arm64/include/asm/unistd.h | 1 + > >> arch/mips/Kconfig | 5 - > >> arch/mips/include/asm/compat.h | 41 +-- > >> arch/mips/include/asm/unistd.h | 2 + > >> arch/mips/include/uapi/asm/fcntl.h | 30 +-- > >> arch/parisc/Kconfig | 4 - > >> arch/parisc/include/asm/compat.h | 45 +--- > >> arch/parisc/include/asm/unistd.h | 1 + > >> arch/powerpc/Kconfig | 5 - > >> arch/powerpc/include/asm/compat.h | 50 +--- > >> arch/powerpc/include/asm/unistd.h | 1 + > >> arch/riscv/Kconfig | 19 ++ > >> arch/riscv/Makefile | 9 + > >> arch/riscv/include/asm/compat.h | 129 ++++++++++ > >> arch/riscv/include/asm/csr.h | 7 + > >> arch/riscv/include/asm/elf.h | 50 +++- > >> arch/riscv/include/asm/mmu.h | 1 + > >> arch/riscv/include/asm/pgtable.h | 13 +- > >> arch/riscv/include/asm/processor.h | 6 +- > >> arch/riscv/include/asm/syscall.h | 1 + > >> arch/riscv/include/asm/thread_info.h | 1 + > >> arch/riscv/include/asm/unistd.h | 11 + > >> arch/riscv/include/asm/vdso.h | 9 + > >> arch/riscv/include/uapi/asm/unistd.h | 2 +- > >> arch/riscv/kernel/Makefile | 3 + > >> arch/riscv/kernel/compat_signal.c | 242 ++++++++++++++++++ > >> arch/riscv/kernel/compat_syscall_table.c | 19 ++ > >> arch/riscv/kernel/compat_vdso/.gitignore | 2 + > >> arch/riscv/kernel/compat_vdso/Makefile | 78 ++++++ > >> arch/riscv/kernel/compat_vdso/compat_vdso.S | 8 + > >> .../kernel/compat_vdso/compat_vdso.lds.S | 3 + > >> arch/riscv/kernel/compat_vdso/flush_icache.S | 3 + > >> .../compat_vdso/gen_compat_vdso_offsets.sh | 5 + > >> arch/riscv/kernel/compat_vdso/getcpu.S | 3 + > >> arch/riscv/kernel/compat_vdso/note.S | 3 + > >> arch/riscv/kernel/compat_vdso/rt_sigreturn.S | 3 + > >> arch/riscv/kernel/entry.S | 18 +- > >> arch/riscv/kernel/process.c | 37 +++ > >> arch/riscv/kernel/ptrace.c | 87 ++++++- > >> arch/riscv/kernel/signal.c | 13 +- > >> arch/riscv/kernel/sys_riscv.c | 6 +- > >> arch/riscv/kernel/vdso.c | 105 +++++--- > >> arch/riscv/kernel/vdso/vdso.S | 6 +- > >> arch/s390/Kconfig | 3 - > >> arch/s390/include/asm/compat.h | 99 +------ > >> arch/s390/include/asm/unistd.h | 1 + > >> arch/sparc/Kconfig | 5 - > >> arch/sparc/include/asm/compat.h | 61 ++--- > >> arch/sparc/include/asm/unistd.h | 1 + > >> arch/x86/Kconfig | 4 - > >> arch/x86/include/asm/compat.h | 104 ++------ > >> arch/x86/include/asm/unistd.h | 1 + > >> fs/open.c | 24 ++ > >> fs/read_write.c | 16 ++ > >> fs/stat.c | 2 +- > >> fs/sync.c | 9 + > >> include/asm-generic/compat.h | 113 ++++++++ > >> include/linux/compat.h | 68 +++++ > >> include/uapi/asm-generic/fcntl.h | 23 +- > >> include/uapi/asm-generic/unistd.h | 4 +- > >> init/Kconfig | 4 + > >> mm/fadvise.c | 11 + > >> mm/readahead.c | 7 + > >> tools/include/uapi/asm-generic/fcntl.h | 21 +- > >> tools/include/uapi/asm-generic/unistd.h | 4 +- > >> 67 files changed, 1206 insertions(+), 563 deletions(-) > >> create mode 100644 arch/riscv/include/asm/compat.h > >> create mode 100644 arch/riscv/kernel/compat_signal.c > >> create mode 100644 arch/riscv/kernel/compat_syscall_table.c > >> create mode 100644 arch/riscv/kernel/compat_vdso/.gitignore > >> create mode 100644 arch/riscv/kernel/compat_vdso/Makefile > >> create mode 100644 arch/riscv/kernel/compat_vdso/compat_vdso.S > >> create mode 100644 arch/riscv/kernel/compat_vdso/compat_vdso.lds.S > >> create mode 100644 arch/riscv/kernel/compat_vdso/flush_icache.S > >> create mode 100755 arch/riscv/kernel/compat_vdso/gen_compat_vdso_offsets.sh > >> create mode 100644 arch/riscv/kernel/compat_vdso/getcpu.S > >> create mode 100644 arch/riscv/kernel/compat_vdso/note.S > >> create mode 100644 arch/riscv/kernel/compat_vdso/rt_sigreturn.S > >> > >> -- > >> 2.25.1 > >> -- Best Regards Guo Ren ML: https://lore.kernel.org/linux-csky/
