- Kernel - mailweb.openeuler.org

[openeuler:OLK-6.6 3195/3195] fs/mfs/data.c:185:24: warning: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized
by kernel test robot 16 Nov '25

16 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 3abd440f300fe9312974a2d65499ca4ff872363a commit: 693388489ac5689392e98cf86f58f115ffa9c9ce [3195/3195] mfs: Add basic data operation for MFS config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20251116/202511160338.SRwmoKy5-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251116/202511160338.SRwmoKy5-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511160338.SRwmoKy5-lkp@intel.com/ All warnings (new ones prefixed by >>): >> fs/mfs/data.c:185:24: warning: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized [-Wdefault-const-init-field-unsafe] 185 | struct vm_area_struct cvma, *vma, **vma_; | ^ include/linux/mm_types.h:659:20: note: member 'vm_flags' declared 'const' here 659 | const vm_flags_t vm_flags; | ^ fs/mfs/data.c:220:24: warning: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized [-Wdefault-const-init-field-unsafe] 220 | struct vm_area_struct cvma, *vma, **vma_; | ^ include/linux/mm_types.h:659:20: note: member 'vm_flags' declared 'const' here 659 | const vm_flags_t vm_flags; | ^ fs/mfs/data.c:214:12: warning: no previous prototype for function 'mfs_filemap_map_pages' [-Wmissing-prototypes] 214 | vm_fault_t mfs_filemap_map_pages(struct vm_fault *vmf, | ^ fs/mfs/data.c:214:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 214 | vm_fault_t mfs_filemap_map_pages(struct vm_fault *vmf, | ^ | static 3 warnings generated. vim +185 fs/mfs/data.c 179 180 static vm_fault_t mfs_filemap_fault(struct vm_fault *vmf) 181 { 182 struct file *cfile, *file = vmf->vma->vm_file; 183 struct mfs_file_info *fi = file->private_data; 184 const struct vm_operations_struct *cvm_ops; > 185 struct vm_area_struct cvma, *vma, **vma_; 186 vm_fault_t ret; 187 188 vma = vmf->vma; 189 memcpy(&cvma, vma, sizeof(struct vm_area_struct)); 190 cfile = fi->cache; 191 cvm_ops = fi->cache_vm_ops; 192 cvma.vm_file = cfile; 193 194 if (unlikely(!cvm_ops->fault)) 195 return VM_FAULT_SIGBUS; 196 197 (void)get_file(cfile); 198 199 /* 200 * Dealing fault in mfs will call cachefile's fault eventually, 201 * hence we will change vmf->vma->vm_file to cachefile. 202 * When faulting concurrently, changing vmf->vma->vm_file is 203 * visible to other threads. Hence we use cvma to narrow the 204 * visibility. vmf->vma is const, so we use **vma_ to change. 205 */ 206 vma_ = (struct vm_area_struct **)&vmf->vma; 207 *vma_ = &cvma; 208 ret = cvm_ops->fault(vmf); 209 *vma_ = vma; 210 fput(cfile); 211 return ret; 212 } 213 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3195/3195] block/blk-ioinf.c:233:6: warning: no previous prototype for function 'ioinf_done'
by kernel test robot 16 Nov '25

16 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 3abd440f300fe9312974a2d65499ca4ff872363a commit: a63e78514d119d4ee6525e1cc3a0aca4a2b29cbd [3195/3195] blk-ioinf: introduce inflight-based IO QoS controller config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20251116/202511160039.06UP1LhU-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251116/202511160039.06UP1LhU-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511160039.06UP1LhU-lkp@intel.com/ All warnings (new ones prefixed by >>): >> block/blk-ioinf.c:233:6: warning: no previous prototype for function 'ioinf_done' [-Wmissing-prototypes] 233 | void ioinf_done(struct ioinf *inf, struct ioinf_rq_wait *rqw) | ^ block/blk-ioinf.c:233:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 233 | void ioinf_done(struct ioinf *inf, struct ioinf_rq_wait *rqw) | ^ | static >> block/blk-ioinf.c:461:5: warning: no previous prototype for function 'ioinf_calc_budget' [-Wmissing-prototypes] 461 | u32 ioinf_calc_budget(struct ioinf_rq_wait *rqw) | ^ block/blk-ioinf.c:461:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 461 | u32 ioinf_calc_budget(struct ioinf_rq_wait *rqw) | ^ | static 2 warnings generated. vim +/ioinf_done +233 block/blk-ioinf.c 232 > 233 void ioinf_done(struct ioinf *inf, struct ioinf_rq_wait *rqw) 234 { 235 int inflight; 236 237 if (!inf->params.enabled) 238 return; 239 240 inflight = atomic_dec_return(&rqw->inflight); 241 if (inflight >= (int)rqw->hinflight) 242 return; 243 244 if (!READ_ONCE(inf->waking) && atomic_read(&rqw->sleepers)) { 245 WRITE_ONCE(inf->waking, true); 246 hrtimer_start(&inf->wakeup_timer, 0, HRTIMER_MODE_REL); 247 } 248 } 249 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-5.10 0/7] zcopy: A zero-copy data transfer mechanism
by Liu Mingrui 15 Nov '25

15 Nov '25

This patchset provides a PAGEATTACH mechanism, a zero-copy data transfer solution optimized for like High Performance Computing workloads. It allows direct sharing of physical memory pages between distinct processes by mapping source pages to a target address space, eliminating redundant data copying and improving large data transfer efficiency. Key features: - Supports zero-copy communication between intra-node processes. - Handles both PTE-level small pages and PMD-level huge pages. Liu Mingrui (7): zcopy: Initialize zcopy module zcopy: Introduce the pageattach interface zcopy: Extend PMD trans hugepage mapping ability zcopy: Add tracepoint for PageAttach zcopy: Add debug inerface dump_pagetable zcopy: Add ZCOPY documentation zcopy: enable ZCOPY module Documentation/misc-devices/zcopy.rst | 64 +++ MAINTAINERS | 7 + arch/arm64/configs/openeuler_defconfig | 6 + drivers/misc/Kconfig | 1 + drivers/misc/Makefile | 1 + drivers/misc/zcopy/Kconfig | 19 + drivers/misc/zcopy/Makefile | 2 + drivers/misc/zcopy/zcopy.c | 719 +++++++++++++++++++++++++ include/trace/events/attach.h | 157 ++++++ 9 files changed, 976 insertions(+) create mode 100644 Documentation/misc-devices/zcopy.rst create mode 100644 drivers/misc/zcopy/Kconfig create mode 100644 drivers/misc/zcopy/Makefile create mode 100644 drivers/misc/zcopy/zcopy.c create mode 100644 include/trace/events/attach.h -- 2.25.1

2 8

[openeuler:openEuler-1.0-LTS] BUILD REGRESSION 232081f726011f512dd6a4c7bc78bc84ef56fe38
by kernel test robot 15 Nov '25

15 Nov '25

tree/branch: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS branch HEAD: 232081f726011f512dd6a4c7bc78bc84ef56fe38 !18973 Fix CVE-2025-39964 Error/Warning (recently discovered and may have been fixed): init/Kconfig:34: syntax error mm/mmu_gather.o: warning: objtool: missing symbol for section .text Unverified Error/Warning (likely false positive, kindly check if interested): include/linux/unaligned/access_ok.h:40:24: warning: array subscript -1 is outside array bounds of 'struct retrieve_data_struct_cmd[1]' [-Warray-bounds=] Error/Warning ids grouped by kconfigs: recent_errors |-- arm64-allnoconfig | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-wait-in-((struct-list_head-)x)-.prev | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-waiter-in-(struct-list_head-)((char-)sem-).prev | |-- include-linux-mempolicy.h:warning:__do_mbind-defined-but-not-used | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-page_alloc.c:warning:no-previous-prototype-for-clear_zone_contiguous | |-- mm-page_alloc.c:warning:no-previous-prototype-for-set_zone_contiguous | |-- mm-rmap.c:warning:no-previous-prototype-for-is_vma_temporary_stack | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled |-- arm64-defconfig | |-- include-asm-generic-io.h:warning:this-statement-may-fall-through | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-waiter-in-(struct-list_head-)((char-)sem-).prev | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-page_alloc.c:warning:no-previous-prototype-for-clear_zone_contiguous | `-- mm-page_alloc.c:warning:no-previous-prototype-for-set_zone_contiguous |-- arm64-randconfig-001-20251115 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- drivers-tty-tty_buffer.c:error:implicit-declaration-of-function-printk_safe_enter | |-- drivers-tty-tty_buffer.c:error:implicit-declaration-of-function-printk_safe_exit | |-- include-asm-generic-io.h:warning:this-statement-may-fall-through | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-page_alloc.c:warning:no-previous-prototype-for-clear_zone_contiguous | |-- mm-page_alloc.c:warning:no-previous-prototype-for-set_zone_contiguous | `-- mm-rodata_test.c:warning:no-previous-prototype-for-rodata_test |-- arm64-randconfig-002-20251115 | |-- crypto-lrw.c:warning:conflicting-types-for-built-in-function-free-expected-void(void-) | |-- crypto-xts.c:warning:conflicting-types-for-built-in-function-free-expected-void(void-) | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- include-linux-string.h:warning:__builtin_memcpy-specified-bound-between-and-exceeds-maximum-object-size | |-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done | |-- mm-memory.c:error:implicit-declaration-of-function-hugetlb_insert_hugepage_pte_by_pa | `-- mm-mmap.c:warning:variable-new_start-set-but-not-used |-- arm64-randconfig-003-20251115 | |-- crypto-lrw.c:warning:conflicting-types-for-built-in-function-free-expected-void(void-) | |-- crypto-xts.c:warning:conflicting-types-for-built-in-function-free-expected-void(void-) | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- include-linux-list.h:warning:storing-the-address-of-local-variable-ticket-in-((struct-list_head-)((char-)space_info-))-.prev | |-- include-linux-printk.h:warning:this-statement-may-fall-through | |-- include-linux-signal.h:warning:this-statement-may-fall-through | |-- include-linux-unaligned-access_ok.h:warning:array-subscript-is-outside-array-bounds-of-struct-retrieve_data_struct_cmd | `-- init-calibrate.c:warning:no-previous-prototype-for-calibration_delay_done |-- arm64-randconfig-004-20251115 | `-- init-Kconfig:syntax-error |-- arm64-randconfig-r054-20251115 | `-- init-Kconfig:syntax-error |-- arm64-randconfig-r121-20250729 | |-- mm-mem_reliable.c:sparse:sparse:invalid-assignment: | |-- mm-mem_reliable.c:sparse:sparse:symbol-reliable_pagecache_max_bytes_write-was-not-declared.-Should-it-be-static | `-- mm-page_alloc.c:sparse:sparse:incorrect-type-in-argument-(different-base-types)-expected-restricted-gfp_t-usertype-flags-got-unsigned-int |-- x86_64-allnoconfig | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-mmu_gather.o:warning:objtool:missing-symbol-for-section-.text | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-allnoconfig-bpf | |-- (.text):undefined-reference-to-_DYNAMIC | |-- (.text):undefined-reference-to-_fini | `-- (.text):undefined-reference-to-_init |-- x86_64-randconfig-002-20251115 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-003-20251115 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | `-- mm-rmap.c:warning:variable-cstart-set-but-not-used |-- x86_64-randconfig-004-20251115 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:warning:variable-nid-set-but-not-used |-- x86_64-randconfig-005-20251115 | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- fs-ext4-mballoc.o:warning:objtool:ext4_mb_complex_scan_group:unreachable-instruction | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:warning:variable-nid-set-but-not-used |-- x86_64-randconfig-013-20251115 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- kernel-sched-core.c:error:use-of-undeclared-identifier-root_task_group | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-072-20251115 | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue | |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-hugetlb.c:warning:no-previous-prototype-for-function-free_huge_page_to_dhugetlb_pool | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-074-20251115 | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:warning:variable-nid-set-but-not-used |-- x86_64-randconfig-075-20251115 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- fs-ext4-mballoc.o:warning:objtool:ext4_mb_complex_scan_group:unreachable-instruction | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | `-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration |-- x86_64-randconfig-076-20251115 | |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union | |-- mm-memcontrol.c:warning:bad-line:otherwise. | |-- mm-mmap.c:warning:variable-new_start-set-but-not-used | |-- mm-rmap.c:warning:variable-cstart-set-but-not-used | |-- mm-vmscan.c:error:implicit-declaration-of-function-kernel_swap_enabled-Werror-Wimplicit-function-declaration | `-- mm-vmscan.c:warning:variable-nid-set-but-not-used `-- x86_64-randconfig-103-20251115 |-- arch-x86-events-zhaoxin-uncore.c:opportunity-for-str_enabled_disabled(uncore_enabled) |-- block-blk-core.c:preceding-lock-on-line |-- block-blk-throttle.c:WARNING:do_div()-does-a-by-division-please-consider-using-div64_ul-instead. |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_issue |-- block-blk-wbt.c:warning:no-previous-prototype-for-function-wbt_requeue |-- crypto-aead.c:opportunity-for-str_yes_no(alg-cra_flags-CRYPTO_ALG_ASYNC) |-- drivers-pinctrl-core.c:error:Cannot-parse-struct-or-union |-- mm-memcontrol.c:warning:bad-line:otherwise. |-- mm-memory.c:warning:cast-from-int-(-)(unsigned-long-unsigned-long-struct-cgp_args-)-to-ktask_thread_func-(aka-int-(-)(void-void-void-)-)-converts-to-incompatible-function-type |-- mm-mmap.c:warning:variable-new_start-set-but-not-used `-- mm-rmap.c:warning:variable-cstart-set-but-not-used elapsed time: 1554m configs tested: 32 configs skipped: 104 tested configs: arm64 allnoconfig gcc-15.1.0 arm64 defconfig gcc-15.1.0 arm64 randconfig-001-20251115 gcc-8.5.0 arm64 randconfig-002-20251115 gcc-14.3.0 arm64 randconfig-003-20251115 gcc-13.4.0 arm64 randconfig-004-20251115 gcc-5.5.0 x86_64 allnoconfig clang-20 x86_64 buildonly-randconfig-001-20251115 gcc-14 x86_64 buildonly-randconfig-002-20251115 gcc-12 x86_64 buildonly-randconfig-003-20251115 gcc-14 x86_64 buildonly-randconfig-004-20251115 gcc-14 x86_64 buildonly-randconfig-005-20251115 gcc-12 x86_64 buildonly-randconfig-006-20251115 gcc-14 x86_64 defconfig gcc-14 x86_64 randconfig-001-20251115 gcc-14 x86_64 randconfig-002-20251115 clang-20 x86_64 randconfig-003-20251115 clang-20 x86_64 randconfig-004-20251115 clang-20 x86_64 randconfig-005-20251115 clang-20 x86_64 randconfig-006-20251115 gcc-13 x86_64 randconfig-011-20251115 gcc-14 x86_64 randconfig-012-20251115 gcc-14 x86_64 randconfig-013-20251115 clang-20 x86_64 randconfig-014-20251115 gcc-14 x86_64 randconfig-015-20251115 gcc-14 x86_64 randconfig-016-20251115 gcc-14 x86_64 randconfig-071-20251115 gcc-14 x86_64 randconfig-072-20251115 clang-20 x86_64 randconfig-073-20251115 gcc-14 x86_64 randconfig-074-20251115 clang-20 x86_64 randconfig-075-20251115 clang-20 x86_64 randconfig-076-20251115 clang-20 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3195/3195] drivers/base/arch_numa.c:194:12: warning: no previous prototype for 'node_reclaim_distance_setup'
by kernel test robot 15 Nov '25

15 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 5f56814d65eaa85e3277534a309f4e7b4f095412 commit: 5e5d40e65cb55e4699c9879674a004f246606a8d [3195/3195] arch_numa: Make node reclaim distance adjustment always available config: arm64-randconfig-001-20251115 (https://download.01.org/0day-ci/archive/20251115/202511151421.e3kZPnSA-lkp@…) compiler: aarch64-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251115/202511151421.e3kZPnSA-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511151421.e3kZPnSA-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/base/arch_numa.c:194:12: warning: no previous prototype for 'node_reclaim_distance_setup' [-Wmissing-prototypes] int __init node_reclaim_distance_setup(char *str) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for ARCH_SUPPORTS_SCHED_SOFT_QUOTA Depends on [n]: CGROUPS [=n] Selected by [y]: - ARM64 [=y] WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y] Selected by [y]: - ARM64 [=y] vim +/node_reclaim_distance_setup +194 drivers/base/arch_numa.c 192 193 #define DISTANCE_MAX (1 << DISTANCE_BITS) > 194 int __init node_reclaim_distance_setup(char *str) 195 { 196 int val; 197 198 if (kstrtoint(str, 0, &val)) 199 return -EINVAL; 200 201 if (val < LOCAL_DISTANCE || val >= DISTANCE_MAX) 202 return -EINVAL; 203 204 if (val != RECLAIM_DISTANCE) { 205 node_reclaim_distance = val; 206 pr_info("Force set node_reclaim_distance to %d\n", val); 207 } 208 209 return 0; 210 } 211 early_param("node_reclaim_distance", node_reclaim_distance_setup); 212 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-6.6 3195/3195] drivers/base/arch_numa.c:194:12: warning: no previous prototype for function 'node_reclaim_distance_setup'
by kernel test robot 15 Nov '25

15 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 5f56814d65eaa85e3277534a309f4e7b4f095412 commit: 5e5d40e65cb55e4699c9879674a004f246606a8d [3195/3195] arch_numa: Make node reclaim distance adjustment always available config: arm64-randconfig-002-20251115 (https://download.01.org/0day-ci/archive/20251115/202511151309.KnZraqS3-lkp@…) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251115/202511151309.KnZraqS3-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511151309.KnZraqS3-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/base/arch_numa.c:194:12: warning: no previous prototype for function 'node_reclaim_distance_setup' [-Wmissing-prototypes] 194 | int __init node_reclaim_distance_setup(char *str) | ^ drivers/base/arch_numa.c:194:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 194 | int __init node_reclaim_distance_setup(char *str) | ^ | static 1 warning generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for HALTPOLL_CPUIDLE Depends on [n]: CPU_IDLE [=n] && ARCH_CPUIDLE_HALTPOLL [=y] && ARCH_HAS_OPTIMIZED_POLL [=y] Selected by [y]: - ARM64 [=y] vim +/node_reclaim_distance_setup +194 drivers/base/arch_numa.c 192 193 #define DISTANCE_MAX (1 << DISTANCE_BITS) > 194 int __init node_reclaim_distance_setup(char *str) 195 { 196 int val; 197 198 if (kstrtoint(str, 0, &val)) 199 return -EINVAL; 200 201 if (val < LOCAL_DISTANCE || val >= DISTANCE_MAX) 202 return -EINVAL; 203 204 if (val != RECLAIM_DISTANCE) { 205 node_reclaim_distance = val; 206 pr_info("Force set node_reclaim_distance to %d\n", val); 207 } 208 209 return 0; 210 } 211 early_param("node_reclaim_distance", node_reclaim_distance_setup); 212 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6 0/7] zcopy: A zero-copy data transfer mechanism
by Liu Mingrui 15 Nov '25

15 Nov '25

This patchset provides a PAGEATTACH mechanism, a zero-copy data transfer solution optimized for like High Performance Computing workloads. It allows direct sharing of physical memory pages between distinct processes by mapping source pages to a target address space, eliminating redundant data copying and improving large data transfer efficiency. Key features: - Supports zero-copy communication between intra-node processes. - Handles both PTE-level small pages and PMD-level huge pages. Liu Mingrui (7): zcopy: Initialize zcopy module zcopy: Introduce the pageattach interface zcopy: Extend PMD trans hugepage mapping ability zcopy: Add tracepoint for PageAttach zcopy: Add debug inerface dump_pagetable zcopy: Add ZCOPY documentation zcopy: enable ZCOPY module Documentation/misc-devices/zcopy.rst | 64 ++ MAINTAINERS | 7 + arch/arm64/configs/openeuler_defconfig | 6 + drivers/misc/Kconfig | 1 + drivers/misc/Makefile | 1 + drivers/misc/zcopy/Kconfig | 34 + drivers/misc/zcopy/Makefile | 2 + drivers/misc/zcopy/zcopy.c | 918 +++++++++++++++++++++++++ include/trace/events/attach.h | 157 +++++ 9 files changed, 1190 insertions(+) create mode 100644 Documentation/misc-devices/zcopy.rst create mode 100644 drivers/misc/zcopy/Kconfig create mode 100644 drivers/misc/zcopy/Makefile create mode 100644 drivers/misc/zcopy/zcopy.c create mode 100644 include/trace/events/attach.h -- 2.25.1

2 8

[PATCH OLK-6.6 0/6] zcopy: A zero-copy data transfer mechanism
by Liu Mingrui 15 Nov '25

15 Nov '25

This patchset provides a PAGEATTACH mechanism, a zero-copy data transfer solution optimized for like High Performance Computing workloads. It allows direct sharing of physical memory pages between distinct processes by mapping source pages to a target address space, eliminating redundant data copying and improving large data transfer efficiency. Key features: - Supports zero-copy communication between intra-node processes. - Handles both PTE-level pages and PMD-level huge pages Liu Mingrui (6): zcopy: Initialize zcopy module zcopy: Introduce the pageattach interface zcopy: Extend PMD trans hugepage mapping ability zcopy: Add tracepoint for PageAttach zcopy: Add debug inerface dump_pagetable zcopy: Add ZCOPY documentation Documentation/misc-devices/zcopy.rst | 64 ++ MAINTAINERS | 7 + drivers/misc/Kconfig | 1 + drivers/misc/Makefile | 1 + drivers/misc/zcopy/Kconfig | 34 + drivers/misc/zcopy/Makefile | 2 + drivers/misc/zcopy/zcopy.c | 918 +++++++++++++++++++++++++++ include/trace/events/attach.h | 157 +++++ 8 files changed, 1184 insertions(+) create mode 100644 Documentation/misc-devices/zcopy.rst create mode 100644 drivers/misc/zcopy/Kconfig create mode 100644 drivers/misc/zcopy/Makefile create mode 100644 drivers/misc/zcopy/zcopy.c create mode 100644 include/trace/events/attach.h -- 2.25.1

2 7

[openeuler:OLK-6.6 3184/3184] drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c:1574:6: warning: no previous prototype for function 'ngbe_set_vf_link_state'
by kernel test robot 14 Nov '25

14 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: a3ad7e81bef76a9ab092cddd9d22a64743270c0f commit: 0e80b39fcf6c1b2a13b11f8632b185a89b012b14 [3184/3184] net: wangxun: ngbe: add support for wangxun 1G config: arm64-randconfig-003-20251114 (https://download.01.org/0day-ci/archive/20251114/202511141823.O1X38Q99-lkp@…) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251114/202511141823.O1X38Q99-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202511141823.O1X38Q99-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c:1079:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] 1079 | case NGBE_VF_BACKUP: | ^ drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c:1079:2: note: insert 'break;' to avoid fall-through 1079 | case NGBE_VF_BACKUP: | ^ | break; >> drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c:1574:6: warning: no previous prototype for function 'ngbe_set_vf_link_state' [-Wmissing-prototypes] 1574 | void ngbe_set_vf_link_state(struct ngbe_adapter *adapter, int vf, int state) | ^ drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c:1574:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1574 | void ngbe_set_vf_link_state(struct ngbe_adapter *adapter, int vf, int state) | ^ | static 2 warnings generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for ARCH_SUPPORTS_SCHED_SOFT_QUOTA Depends on [n]: CGROUPS [=n] Selected by [y]: - ARM64 [=y] vim +/ngbe_set_vf_link_state +1574 drivers/net/ethernet/wangxun/ngbe/ngbe_sriov.c 1566 1567 /** 1568 * ngbe_set_vf_link_state - Set link state 1569 * @adapter: Pointer to adapter struct 1570 * @vf: VF identifier 1571 * @state: required link state 1572 * Set a link force state on/off a single vf 1573 **/ > 1574 void ngbe_set_vf_link_state(struct ngbe_adapter *adapter, int vf, int state) 1575 { 1576 bool link_up = false; 1577 1578 adapter->vfinfo[vf].link_state = state; 1579 1580 switch (state) { 1581 case NGBE_VF_LINK_STATE_AUTO: 1582 if (test_bit(__NGBE_DOWN, &adapter->state)) { 1583 adapter->vfinfo[vf].link_enable = false; 1584 } else { 1585 link_up = adapter->link_up; 1586 adapter->vfinfo[vf].link_enable = true; 1587 } 1588 break; 1589 case NGBE_VF_LINK_STATE_ENABLE: 1590 adapter->vfinfo[vf].link_enable = true; 1591 link_up = true; 1592 break; 1593 case NGBE_VF_LINK_STATE_DISABLE: 1594 adapter->vfinfo[vf].link_enable = false; 1595 link_up = false; 1596 break; 1597 } 1598 1599 /* restart the VF */ 1600 adapter->vfinfo[vf].clear_to_send = false; 1601 ngbe_ping_vf(adapter, vf); 1602 1603 ngbe_ping_vf_with_link_status(adapter, link_up, vf); 1604 1605 ngbe_set_vf_rx_tx(adapter, vf); 1606 } 1607 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH OLK-6.6 v9 0/9] Add xcall 2.0 support
by Jinjie Ruan 14 Nov '25

14 Nov '25

Add xcall 2.0 support, which is compatible with xcall1.0, and can be used to dynamic instruction replacement for hardware xcall. Chanegs in v9: - /proc/xcall/comm, 0644 -> 0640 - /proc/xcall/comm check proc_mkdir("xcall", NULL) return value, use it as the parent proc_dir_entry for "comm". - Consider next task is NULL for xcall_info_switch(). - Return -EINVAL for error path in parse_xcall_command(). Changes in v8: - Fix no reigister and unregister null-ptr-ref bug by find prog first. - Fix xcall_comm_write write empty null-ptr-ref bug in memdup_user_nul(). - Add empty owner, exceed 64 prog name and repeat syscall check in check_prog(). - Move INIT_LIST_HEAD(&prog->list) to xcall_prog_register() instead of kernel module. Changes in v7: - Fix alternative bug in sync ventry. - Add "xcall" limit for xcall2.0 and hardware xcall. Changes in v6: - Add "xcall=debug" debug mode to use the "fast syscall" for every system call. - Use alternative to reduce the baseline performance noise floor when not set "xcall" on the kernel cmdline - Move binary_path out from xcall struct, and add to xcall_comm struct. - Fix1. insert_xcall_locked() check both "name" and "binary" to avoid repeated attach same name of xcall. - Fix2. Check if it is an executable file for the binary path. - Fix3. Check if it is an absolute path for the binary path. - Fix4. Remove the extra free_xcall_comm(info) in default branch in proc_xcall_command(). - Fix5. Add zero syscall hijack check for xcall_prog_register(). - Use __arm64_sys_ni_syscall() instead of define inv_xcall(). - Replace the -ENOSYS return value with -EINVAL, to avoid the warning. Changes in v5: - Fix build problem. - el0t_64_sync_ventry jump to kernel_ventry to do VMAP_STACK. - Some cleanups. - Merge the three refactor patch. Changes in v4: - Reuse uprobe_write_opcode() instead of use __replace_page() and copy_to_page(). - Handle error for uprobe_write_opcode(). - Support xcall1.0 before 920G. - Change xcall1.0 bitmap to byte array to save check insns. - Use percpu variable to save check insns for xcall1.0. - A little cleanup. Changes in v3: - Add validity checks during xcall registration to prevent out-of-bounds access and null pointer dereferences. - Extract __replace_page() and copy_to_page() from uprobe, to avoid code duplication. - Replace with new compatible refactored code. - Remove unnecessary member, such as old_name. Jinjie Ruan (2): xcall2.0: Support xcall1.0 for hardware xcall openeuler_defconfig: Enable CONFIG_DYNAMIC_XCALL by default Liao Chang (6): xcall2.0: Add userspace proc interface xcall2.0: Add xcall module register interface xcall2.0: Add xcall_area xcall2.0: Hajack syscall with dynamic instruciton replace xcall: Rework the early exception vector of XCALL and SYNC xcall2.0: Add a basic testcase Yipeng Zou (1): xcall: Add debug mode to force fast syscall for all threads arch/arm64/Kconfig.turbo | 13 + arch/arm64/configs/openeuler_defconfig | 1 + arch/arm64/include/asm/exception.h | 4 +- arch/arm64/include/asm/mmu_context.h | 7 - arch/arm64/include/asm/xcall.h | 154 ++++---- arch/arm64/kernel/cpufeature.c | 79 ++-- arch/arm64/kernel/entry-common.c | 28 +- arch/arm64/kernel/entry.S | 86 +---- arch/arm64/kernel/probes/uprobes.c | 6 + arch/arm64/kernel/process.c | 5 + arch/arm64/kernel/syscall.c | 14 + arch/arm64/kernel/xcall/Makefile | 3 +- arch/arm64/kernel/xcall/core.c | 403 +++++++++++++++++++++ arch/arm64/kernel/xcall/entry.S | 139 +++++-- arch/arm64/kernel/xcall/proc.c | 234 ++++++++++++ arch/arm64/kernel/xcall/xcall.c | 68 ++-- arch/arm64/kvm/sys_regs.c | 1 + drivers/staging/Kconfig | 2 + drivers/staging/Makefile | 1 + drivers/staging/xcall/Kconfig | 19 + drivers/staging/xcall/Makefile | 1 + drivers/staging/xcall/dynamic_xcall_test.c | 89 +++++ fs/proc/proc_xcall.c | 144 ++------ include/linux/mm_types.h | 4 + include/linux/xcall.h | 51 +++ kernel/events/uprobes.c | 23 ++ kernel/fork.c | 3 + mm/mmap.c | 14 +- 28 files changed, 1222 insertions(+), 374 deletions(-) create mode 100644 arch/arm64/kernel/xcall/core.c create mode 100644 arch/arm64/kernel/xcall/proc.c create mode 100644 drivers/staging/xcall/Kconfig create mode 100644 drivers/staging/xcall/Makefile create mode 100644 drivers/staging/xcall/dynamic_xcall_test.c create mode 100644 include/linux/xcall.h -- 2.34.1

2 10