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[PATCH OLK-6.6 0/5] block: Add config option to not allow
by Li Lingfeng 08 Dec '23

08 Dec '23

This feature is controlled by both CONFIG_BLK_DEV_WRITE_MOUNTED and cmdline parameters bdev_allow_write_mounted, and bdev_allow_write_mounted has a higher priority. Jan Kara (5): block: Add config option to not allow writing to mounted devices btrfs: Do not restrict writes to btrfs devices fs: Block writes to mounted block devices xfs: Block writes to log device ext4: Block writes to journal device block/Kconfig | 20 +++++++++++ block/bdev.c | 75 ++++++++++++++++++++++++++++++++++++++- fs/btrfs/super.c | 2 ++ fs/ext4/super.c | 5 +-- fs/xfs/xfs_super.c | 5 +-- include/linux/blk_types.h | 1 + include/linux/blkdev.h | 5 ++- 7 files changed, 107 insertions(+), 6 deletions(-) -- 2.31.1

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[PATCH OLK-6.6 v2 00/19] Add sharepool support
by Wang Wensheng 08 Dec '23

08 Dec '23

This patch series migrates share pool features from OLK-5.10 to OLK-6.6. We don't want to do this work patch by patch since there are hundreds of patches in OLK-5.10 including bugfix and small features generation. Instead we just take the final version and split it into a few small patches, each of which contains one feature at the final version. The share pool features is a big feature, it is mainly used to share user virtual memory for different processes in the same group. It could be used by this steps: Process A create a new group which is owned by process A. Process A add process B to the group. Process A add process C to the same group. Process B alloc a new memory VA, and write something in it. The VA was send to the process C by IPC, then process C got it. The process C access the VA and got the data directly. The process A could add more processes in the group to share the memory. Fix the memory by use the free function or exit the group. The new features is enabled both by CONFIG_SHARE_POOL and the enable_ascend_share_pool bootarg, it would not affect anything if disabled. v1->v2: Delete some unused code. Wang Wensheng (19): mm/hugetlb: Introduce hugetlb_insert_hugepage_pte[_by_pa] mm/vmalloc: Extend vmalloc usage about hugepage mm: Extend mmap assocated functions to accept mm_struct mm/sharepool: Add base framework for share_pool mm/sharepool: Add sp_area management code mm/sharepool: Reserve the va space for share_pool mm/sharepool: Implement mg_sp_make_share_u2k() mm/sharepool: Implement mg_sp_unshare_kva mm/sharepool: Implement mg_sp_walk_page_range() mm/sharepool: Implement mg_sp_free() mm/sharepool: Implement mg_sp_alloc() mm/sharepool: Implement mg_sp_make_share_k2u() mm/sharepool: Implement mg_sp_group_add_task() mm/sharepool: Implement mg_sp_group_id_by_pid() mm/sharepool: Implement mg_sp_id_of_current() mm/sharepool: Implement mg_sp_config_dvpp_range() mm/sharepool: Add proc interfaces to show sp info mm/sharepool: support fork() and exit() to handle the mm mm/sharepool: Protect the va reserved for sharepool include/linux/hugetlb.h | 32 + include/linux/mempolicy.h | 11 + include/linux/mm.h | 17 + include/linux/mm_types.h | 6 + include/linux/share_pool.h | 267 +++ include/linux/vmalloc.h | 18 + kernel/fork.c | 3 + mm/Kconfig | 34 + mm/Makefile | 1 + mm/gup.c | 23 +- mm/hugetlb.c | 78 + mm/mempolicy.c | 12 +- mm/mmap.c | 50 +- mm/mremap.c | 4 + mm/share_pool.c | 3448 ++++++++++++++++++++++++++++++++++++ mm/util.c | 4 + mm/vmalloc.c | 205 ++- 17 files changed, 4192 insertions(+), 21 deletions(-) create mode 100644 include/linux/share_pool.h create mode 100644 mm/share_pool.c -- 2.17.1

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[PATCH OLK-6.6 0/2] arm64: errata: add option to disable cache readunique prefetch on HIP08
by Yang Yingliang 08 Dec '23

08 Dec '23

Random performance decreases appear on cases of Hackbench which test pipe or socket communication among multi-threads on Hisi HIP08 SoC. Cache sharing which caused by the change of the data layout and the cache readunique prefetch mechanism both lead to this problem. Readunique mechanism which may caused by store operation will invalid cachelines on other cores during data fetching stage which can cause cacheline invalidation happens frequently in a sharing data access situation. Disable cache readunique prefetch can trackle this problem. Test cases are like: for i in 20;do echo "--------pipe thread num=$i----------" for j in $(seq 1 10);do ./hackbench -pipe $i thread 1000 done done We disable readunique prefetch only in el2 for in el1 disabling readunique prefetch may cause panic due to lack of related priority which often be set in BIOS. Introduce CONFIG_HISILICON_ERRATUM_HIP08_RU_PREFETCH and disable RU prefetch using boot cmdline 'readunique_prefetch=off'. Kai Shen (1): arm64: errata: add option to disable cache readunique prefetch on HIP08 Xie XiuQi (1): arm64: errata: enable HISILICON_ERRATUM_HIP08_RU_PREFETCH arch/arm64/Kconfig | 18 +++++++++ arch/arm64/configs/openeuler_defconfig | 2 + arch/arm64/kernel/cpu_errata.c | 56 ++++++++++++++++++++++++++ arch/arm64/tools/cpucaps | 1 + 4 files changed, 77 insertions(+) -- 2.25.1

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[src-openEuler/rdma-core 1/1] libhns: Fix missing DB when compiler does not support SVE
by Chengchang Tang 08 Dec '23

08 Dec '23

driver inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8I94Q ---------------------------------------------------------------------- Currently, if compiler does not support SVE, hns_roce_sve_write512() will be a empty function, which means that this doorbell will be missed when HNS_ROCE_QP_CAP_SVE_DIRECT_WQE is set in qp flag. This patch ensures that driver will at least generate the DB regardless of whether SVE DWQE is supported or not. Fixes: 7b1f5c5654c2 ("libhns: Add support for SVE Direct WQE function") Signed-off-by: Chengchang Tang <tangchengchang(a)huawei.com> Signed-off-by: Ran Zhou <zhouran10(a)h-partners.com> --- providers/hns/hns_roce_u_hw_v2.c | 33 +++++++++++++------------------- 1 file changed, 13 insertions(+), 20 deletions(-) diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c index acbc854..be4c9f3 100644 --- a/providers/hns/hns_roce_u_hw_v2.c +++ b/providers/hns/hns_roce_u_hw_v2.c @@ -318,26 +318,22 @@ static void hns_roce_update_sq_db(struct hns_roce_context *ctx, hns_roce_write64(ctx, qp->sq.db_reg, (__le32 *)&sq_db); } -static void hns_roce_write512(uint64_t *dest, uint64_t *val) +static void hns_roce_qp_write512(struct hns_roce_qp *qp, uint64_t *val) { - mmio_memcpy_x64(dest, val, sizeof(struct hns_roce_rc_sq_wqe)); -} + uint64_t *dest = qp->sq.db_reg; #if defined(HNS_SVE) -static void hns_roce_sve_write512(uint64_t *dest, uint64_t *val) -{ - asm volatile( - "ldr z0, [%0]\n" - "str z0, [%1]\n" - ::"r" (val), "r"(dest):"cc", "memory" - ); -} -#else -static void hns_roce_sve_write512(uint64_t *dest, uint64_t *val) -{ - return; -} + if (qp->flags & HNS_ROCE_QP_CAP_SVE_DIRECT_WQE) { + asm volatile( + "ldr z0, [%0]\n" + "str z0, [%1]\n" + ::"r" (val), "r"(dest):"cc", "memory" + ); + return; + } #endif + mmio_memcpy_x64(dest, val, sizeof(struct hns_roce_rc_sq_wqe)); +} static void hns_roce_write_dwqe(struct hns_roce_qp *qp, void *wqe) { @@ -355,10 +351,7 @@ static void hns_roce_write_dwqe(struct hns_roce_qp *qp, void *wqe) hr_reg_write(rc_sq_wqe, RCWQE_DB_SL_H, qp->sl >> HNS_ROCE_SL_SHIFT); hr_reg_write(rc_sq_wqe, RCWQE_WQE_IDX, qp->sq.head); - if (qp->flags & HNS_ROCE_QP_CAP_SVE_DIRECT_WQE) - hns_roce_sve_write512(qp->sq.db_reg, wqe); - else - hns_roce_write512(qp->sq.db_reg, wqe); + hns_roce_qp_write512(qp, wqe); } static void update_cq_db(struct hns_roce_context *ctx, struct hns_roce_cq *cq) -- 2.30.0

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[PATCH OLK-6.6 v4 00/17] arm32/arm64/x86_64: Support basic functions of kernel livepatch
by Zheng Yejian 08 Dec '23

08 Dec '23

Port patches from v5.10 to support basic functions of kernel livepatch on arch arm32/arm64/x86_64. Zheng Yejian (17): livepatch/core: Allow implementation without ftrace livepatch/core: Reuse common codes in the solution without ftrace Revert "x86/insn: Make insn_complete() static" livepatch/x86: Support livepatch without ftrace livepatch/core: Restrict livepatch patched/unpatched when plant kprobe livepatch/core: Support load and unload hooks livepatch: samples: Adapt livepatch-sample for solution without ftrace livepatch/core: Support jump_label livepatch: Fix crash when access the global variable in hook livepatch: Fix patching functions which have static_call livepatch/core: Avoid conflict with static {call,key} livepatch/arm64: Support livepatch without ftrace livepatch/core: Revert module_enable_ro and module_disable_ro livepatch: Enable livepatch configs in openeuler_defconfig arm/module: Use plt section indices for relocations livepatch/core: Add support for arm for klp relocation livepatch/arm: Support livepatch without ftrace Documentation/filesystems/proc.rst | 2 +- arch/arm/Kconfig | 3 + arch/arm/include/asm/livepatch.h | 51 + arch/arm/include/asm/module.h | 4 +- arch/arm/kernel/Makefile | 1 + arch/arm/kernel/ftrace.c | 4 +- arch/arm/kernel/livepatch.c | 256 ++++ arch/arm/kernel/module-plts.c | 22 +- arch/arm/kernel/module.c | 4 +- arch/arm64/Kconfig | 3 + arch/arm64/configs/openeuler_defconfig | 12 + arch/arm64/include/asm/livepatch.h | 48 + arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/livepatch.c | 225 ++++ arch/powerpc/Kconfig | 4 +- arch/s390/Kconfig | 2 +- arch/s390/configs/debug_defconfig | 1 + arch/s390/configs/defconfig | 1 + arch/x86/Kconfig | 3 +- arch/x86/configs/openeuler_defconfig | 12 +- arch/x86/include/asm/insn.h | 7 + arch/x86/include/asm/livepatch.h | 33 + arch/x86/kernel/Makefile | 1 + arch/x86/kernel/livepatch.c | 289 +++++ arch/x86/kernel/module.c | 2 +- arch/x86/lib/insn.c | 7 - include/linux/jump_label.h | 10 + include/linux/livepatch.h | 97 +- include/linux/livepatch_sched.h | 6 +- include/linux/module.h | 33 + include/linux/moduleloader.h | 4 +- include/linux/static_call.h | 6 + kernel/jump_label.c | 22 + kernel/livepatch/Kconfig | 78 +- kernel/livepatch/Makefile | 3 +- kernel/livepatch/core.c | 1245 +++++++++++++++++++- kernel/livepatch/core.h | 4 + kernel/module/main.c | 10 +- kernel/module/strict_rwx.c | 17 + kernel/static_call_inline.c | 20 + lib/Kconfig.debug | 2 +- samples/livepatch/Makefile | 2 + samples/livepatch/livepatch-sample.c | 36 + tools/arch/x86/include/asm/insn.h | 7 + tools/arch/x86/lib/insn.c | 7 - tools/testing/selftests/bpf/config.aarch64 | 1 + tools/testing/selftests/bpf/config.s390x | 1 + tools/testing/selftests/livepatch/README | 1 + tools/testing/selftests/livepatch/config | 1 + 49 files changed, 2555 insertions(+), 56 deletions(-) create mode 100644 arch/arm/include/asm/livepatch.h create mode 100644 arch/arm/kernel/livepatch.c create mode 100644 arch/arm64/include/asm/livepatch.h create mode 100644 arch/arm64/kernel/livepatch.c create mode 100644 arch/x86/include/asm/livepatch.h create mode 100644 arch/x86/kernel/livepatch.c -- 2.25.1

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[PATCH v3 OLK-5.10 0/2] Fixed some memory leak issues of the Perf tool
by Junhao He 08 Dec '23

08 Dec '23

Fixed some memory leak issues of the Perf record of ptt: a) ptt: Fix memory leak in lseek failure handling b) ptt: Fix one memory leakage in hisi_ptt_process_auxtrace_event() Kuan-Wei Chiu (1): perf hisi-ptt: Fix memory leak in lseek failure handling Yicong Yang (1): perf hisi-ptt: Fix one memory leakage in hisi_ptt_process_auxtrace_event() tools/perf/util/hisi-ptt.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) -- 2.33.0

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[PATCH OLK-6.6 v3 0/4] add redis sockmap sample code
by Zhengchao Shao 08 Dec '23

08 Dec '23

add redis sockmap sample code. Liu Jian (4): cgroup: make cgroup_bpf_prog_attach work when cgroup2 is not mounted net: let sockops can use bpf_get_current_comm() net: add local_skb parameter to identify local tcp connection tools: add sample sockmap code for redis include/linux/cgroup.h | 1 + include/linux/filter.h | 3 + include/linux/skbuff.h | 5 + include/uapi/linux/bpf.h | 1 + kernel/bpf/cgroup.c | 8 +- kernel/cgroup/cgroup.c | 24 +++ net/Kconfig | 5 + net/core/filter.c | 13 ++ net/ipv4/tcp_input.c | 6 +- net/ipv4/tcp_output.c | 9 + tools/include/uapi/linux/bpf.h | 1 + tools/netacc/Makefile | 24 +++ tools/netacc/bpf_sockmap.h | 167 +++++++++++++++++++ tools/netacc/net-acc | 35 ++++ tools/netacc/netacc.c | 296 +++++++++++++++++++++++++++++++++ tools/netacc/netaccsockmap.c | 176 ++++++++++++++++++++ 16 files changed, 769 insertions(+), 5 deletions(-) create mode 100644 tools/netacc/Makefile create mode 100644 tools/netacc/bpf_sockmap.h create mode 100755 tools/netacc/net-acc create mode 100644 tools/netacc/netacc.c create mode 100644 tools/netacc/netaccsockmap.c -- 2.34.1

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[PATCH OLK-6.6 v3 0/4] add redis sockmap sample code
by Zhengchao Shao 08 Dec '23

08 Dec '23

add redis sockmap sample code. Liu Jian (4): cgroup: make cgroup_bpf_prog_attach work when cgroup2 is not mounted net: let sockops can use bpf_get_current_comm() net: add local_skb parameter to identify local tcp connection tools: add sample sockmap code for redis include/linux/cgroup.h | 1 + include/linux/filter.h | 3 + include/linux/skbuff.h | 5 + include/uapi/linux/bpf.h | 1 + kernel/bpf/cgroup.c | 8 +- kernel/cgroup/cgroup.c | 24 +++ net/Kconfig | 5 + net/core/filter.c | 13 ++ net/ipv4/tcp_input.c | 6 +- net/ipv4/tcp_output.c | 9 + tools/include/uapi/linux/bpf.h | 1 + tools/netacc/Makefile | 24 +++ tools/netacc/bpf_sockmap.h | 167 +++++++++++++++++++ tools/netacc/net-acc | 35 ++++ tools/netacc/netacc.c | 296 +++++++++++++++++++++++++++++++++ tools/netacc/netaccsockmap.c | 176 ++++++++++++++++++++ 16 files changed, 769 insertions(+), 5 deletions(-) create mode 100644 tools/netacc/Makefile create mode 100644 tools/netacc/bpf_sockmap.h create mode 100755 tools/netacc/net-acc create mode 100644 tools/netacc/netacc.c create mode 100644 tools/netacc/netaccsockmap.c -- 2.34.1

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[PATCH openEuler-1.0-LTS v3 0/2] LTS patch backport
by Dong Chenchen 08 Dec '23

08 Dec '23

Dong Chenchen (1): net: fix kabi broken in struct netns_xfrm Eric Dumazet (1): xfrm: fix a data-race in xfrm_gen_index() include/net/netns/xfrm.h | 3 +++ net/xfrm/xfrm_policy.c | 6 ++---- 2 files changed, 5 insertions(+), 4 deletions(-) -- 2.25.1

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[PATCH OLK-6.6 0/7]arm64: add machine check safe support
by Tong Tiangen 08 Dec '23

08 Dec '23

With the increase of memory capacity and density, the probability of memory error also increases. The increasing size and density of server RAM in data centers and clouds have shown increased uncorrectable memory errors. Currently, the kernel has mechanism to recover from hardware memory errors. This patchset provides a new recovery mechanism. For arm64, the hardware memory error handling in do_sea(), which is divided into two cases: 1. If the user state consumed the memory errors, the solution is to kill the user process and isolate the error page. 2. If the kernel state consumed the memory errors, the solution is to panic. For case 2, Undifferentiated panic may not be the optimal choice, as it can be handled better. In some scenarios, we can avoid panic, such as uaccess, if the uaccess fails due to memory error, only the user process will be affected, killing the user process and isolating the user page with hardware memory errors is a better choice. Tong Tiangen (7): uaccess: add generic fallback version of copy_mc_to_user() arm64: add support for machine check error safe arm64: add uaccess to machine check safe mm/hwpoison: return -EFAULT when copy fail in copy_mc_[user]_highpage() arm64: support copy_mc_[user]_highpage() arm64: introduce copy_mc_to_kernel() implementation arm64: add machine check safe sysctl interface Documentation/admin-guide/sysctl/kernel.rst | 14 ++ arch/arm64/Kconfig | 1 + arch/arm64/include/asm/asm-extable.h | 15 ++ arch/arm64/include/asm/assembler.h | 4 + arch/arm64/include/asm/extable.h | 1 + arch/arm64/include/asm/mte.h | 5 + arch/arm64/include/asm/page.h | 10 + arch/arm64/include/asm/string.h | 5 + arch/arm64/include/asm/uaccess.h | 21 ++ arch/arm64/lib/Makefile | 4 +- arch/arm64/lib/copy_from_user.S | 10 +- arch/arm64/lib/copy_mc_page.S | 89 +++++++ arch/arm64/lib/copy_to_user.S | 10 +- arch/arm64/lib/memcpy_mc.S | 257 ++++++++++++++++++++ arch/arm64/lib/mte.S | 27 ++ arch/arm64/mm/copypage.c | 66 ++++- arch/arm64/mm/extable.c | 21 +- arch/arm64/mm/fault.c | 58 ++++- arch/powerpc/include/asm/uaccess.h | 1 + arch/x86/include/asm/uaccess.h | 1 + include/linux/highmem.h | 16 +- include/linux/uaccess.h | 9 + mm/kasan/shadow.c | 12 + mm/khugepaged.c | 4 +- 24 files changed, 635 insertions(+), 26 deletions(-) create mode 100644 arch/arm64/lib/copy_mc_page.S create mode 100644 arch/arm64/lib/memcpy_mc.S -- 2.25.1

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