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[PATCH OLK-5.10 0/1] zcopy: Remove the dump_pagetable interface
by Liu Mingrui 19 Nov '25

19 Nov '25

zcopy: Remove the dump_pagetable interface Liu Mingrui (1): zcopy: Remove the dump_pagetable interface drivers/misc/zcopy/zcopy.c | 24 ------------------------ 1 file changed, 24 deletions(-) -- 2.25.1

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[PATCH OLK-6.6 0/2] some minor bugfix about zcopy
by Liu Mingrui 19 Nov '25

19 Nov '25

Fix some minor bugs. Liu Mingrui (2): zcopy: Fix the incorrect mapping size passed in attach_pte_range zcopy: Remove the dump_pagetable interface drivers/misc/zcopy/zcopy.c | 25 +------------------------ 1 file changed, 1 insertion(+), 24 deletions(-) -- 2.25.1

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[openeuler:OLK-6.6 3278/3278] include/linux/xsched.h:265:29: error: field has incomplete type 'struct cgroup_subsys_state'
by kernel test robot 19 Nov '25

19 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 4552257bd9515ad6f78bd3691c7379beb42dc3cd commit: 43bbefc53356009d3603faa2c6e6a2858f724e4d [3278/3278] xsched: Add XCU control group implementation and its backend in xsched CFS config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20251119/202511191801.j34oMzNw-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/20251119/202511191801.j34oMzNw-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/202511191801.j34oMzNw-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from kernel/xsched/vstream.c:23: >> include/linux/xsched.h:265:29: error: field has incomplete type 'struct cgroup_subsys_state' 265 | struct cgroup_subsys_state css; | ^ include/linux/kthread.h:219:8: note: forward declaration of 'struct cgroup_subsys_state' 219 | struct cgroup_subsys_state; | ^ 1 error generated. vim +265 include/linux/xsched.h 261 262 /* Xsched scheduling control group */ 263 struct xsched_group { 264 /* Cgroups controller structure */ > 265 struct cgroup_subsys_state css; 266 267 /* Control group settings: */ 268 int sched_class; 269 int prio; 270 271 /* Bandwidth setting: shares value set by user */ 272 u64 shares_cfg; 273 u64 shares_cfg_red; 274 u32 weight; 275 u64 children_shares_sum; 276 277 struct xsched_group_xcu_priv perxcu_priv[XSCHED_NR_CUS]; 278 279 /* Groups hierarchcy */ 280 struct xsched_group *parent; 281 struct list_head children_groups; 282 struct list_head group_node; 283 284 spinlock_t lock; 285 286 /* for XSE to move in perxcu */ 287 struct list_head members; 288 }; 289 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[openeuler:OLK-6.6 3278/3278] include/linux/xsched.h:265:36: error: field 'css' has incomplete type
by kernel test robot 19 Nov '25

19 Nov '25

tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 4552257bd9515ad6f78bd3691c7379beb42dc3cd commit: 43bbefc53356009d3603faa2c6e6a2858f724e4d [3278/3278] xsched: Add XCU control group implementation and its backend in xsched CFS config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20251119/202511191730.FhCbWCm7-lkp@…) compiler: aarch64-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251119/202511191730.FhCbWCm7-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/202511191730.FhCbWCm7-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from kernel/xsched/vstream.c:23: >> include/linux/xsched.h:265:36: error: field 'css' has incomplete type 265 | struct cgroup_subsys_state css; | ^~~ 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 +/css +265 include/linux/xsched.h 261 262 /* Xsched scheduling control group */ 263 struct xsched_group { 264 /* Cgroups controller structure */ > 265 struct cgroup_subsys_state css; 266 267 /* Control group settings: */ 268 int sched_class; 269 int prio; 270 271 /* Bandwidth setting: shares value set by user */ 272 u64 shares_cfg; 273 u64 shares_cfg_red; 274 u32 weight; 275 u64 children_shares_sum; 276 277 struct xsched_group_xcu_priv perxcu_priv[XSCHED_NR_CUS]; 278 279 /* Groups hierarchcy */ 280 struct xsched_group *parent; 281 struct list_head children_groups; 282 struct list_head group_node; 283 284 spinlock_t lock; 285 286 /* for XSE to move in perxcu */ 287 struct list_head members; 288 }; 289 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

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[PATCH OLK-6.6 v2 0/3] Fix bugs
by Jinjie Ruan 19 Nov '25

19 Nov '25

Fix bugs. Jinjie Ruan (3): xcall2.0: Fix module unload issue by fixing refcount xcall2.0: Fix the semantic changes in xcall_enable xcall2.0: Fix stack-out-of-bounds bug in xcall_write() fs/proc/proc_xcall.c | 26 +++++++++++++++++++------- kernel/fork.c | 2 +- 2 files changed, 20 insertions(+), 8 deletions(-) -- 2.34.1

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[PATCH OLK-6.6] zcopy: Fix the incorrect mapping size passed in attach_pte_range
by Liu Mingrui 19 Nov '25

19 Nov '25

hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/release-management/issues/ID3TGE -------------------------------- We passed the wrong parameter; it should not be PMD_SIZE, but rather a variable. Fixes: 0305a09f222b ("zcopy: Introduce the pageattach interface") Signed-off-by: Liu Mingrui <liumingrui(a)huawei.com> --- drivers/misc/zcopy/zcopy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/zcopy/zcopy.c b/drivers/misc/zcopy/zcopy.c index 2096a9d9ff26..4b987f740e62 100644 --- a/drivers/misc/zcopy/zcopy.c +++ b/drivers/misc/zcopy/zcopy.c @@ -628,7 +628,7 @@ static int attach_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, trace_attach_extent_start(dst_mm, src_mm, dst_addr, src_addr, dst_pmd, src_pmd, extent); ret = attach_pte_range(dst_vma, src_vma, dst_addr, src_addr, dst_pmd, - src_pmd, PMD_SIZE); + src_pmd, extent); trace_attach_extent_end(dst_mm, src_mm, dst_addr, src_addr, dst_pmd, src_pmd, ret); if (ret < 0) -- 2.25.1

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[PATCH OLK-6.6] KVM: arm64: ipiv: Fix compilation warning
by Jinqian Yang 19 Nov '25

19 Nov '25

virt inclusion category: bugfix bugzilla: https://gitee.com/openeuler/qemu/issues/ID7F1Y ------------------------------------------------------------------------ static functions generate code in every compilation unit. If a compilation unit includes the header file but doesn't use the function, the compiler will issue a warning. In contrast, static inline functions are silently discarded when unused and won't produce warnings. Also fix the declaration/implementation mismatch for gic_dist_enable_ipiv. Fixes: cd77c03a1ee1 ("KVM: arm64: Implement PV_SGI related calls") Signed-off-by: Jinqian Yang <yangjinqian(a)huawei.com> --- arch/arm64/kvm/hisilicon/hisi_virt.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/kvm/hisilicon/hisi_virt.h b/arch/arm64/kvm/hisilicon/hisi_virt.h index 2a995acd1c18..74f469a1c2f6 100644 --- a/arch/arm64/kvm/hisilicon/hisi_virt.h +++ b/arch/arm64/kvm/hisilicon/hisi_virt.h @@ -124,11 +124,11 @@ static inline bool hisi_ipiv_supported(void) { return false; } -static bool hisi_ipiv_supported_per_vm(struct kvm_vcpu *vcpu) +static inline bool hisi_ipiv_supported_per_vm(struct kvm_vcpu *vcpu) { return false; } -static void hisi_ipiv_enable_per_vm(struct kvm_vcpu *vcpu) {} +static inline void hisi_ipiv_enable_per_vm(struct kvm_vcpu *vcpu) {} static inline void ipiv_gicd_init(void) {} #endif /* CONFIG_ARM64_HISI_IPIV */ static inline void kvm_get_pg_cfg(void) {} @@ -149,7 +149,7 @@ static inline void kvm_hisi_reload_lsudvmbm(struct kvm *kvm) {} #endif /* CONFIG_KVM_HISI_VIRT */ #ifdef CONFIG_ARM64_HISI_IPIV -extern bool gic_dist_enable_ipiv(void); +extern void gic_dist_enable_ipiv(void); extern bool gic_get_ipiv_status(void); #endif /* CONFIG_ARM64_HISI_IPIV */ #endif /* __HISI_VIRT_H__ */ -- 2.33.0

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[PATCH OLK-5.10] bpf: Fix invalid prog->stats access when update_effective_progs fails
by Pu Lehui 19 Nov '25

19 Nov '25

maillist inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/ID7DOT Reference: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id… -------------------------------- Syzkaller triggers an invalid memory access issue following fault injection in update_effective_progs. The issue can be described as follows: __cgroup_bpf_detach update_effective_progs compute_effective_progs bpf_prog_array_alloc <-- fault inject purge_effective_progs /* change to dummy_bpf_prog */ array->items[index] = &dummy_bpf_prog.prog ---softirq start--- __do_softirq ... __cgroup_bpf_run_filter_skb __bpf_prog_run_save_cb bpf_prog_run stats = this_cpu_ptr(prog->stats) /* invalid memory access */ flags = u64_stats_update_begin_irqsave(&stats->syncp) ---softirq end--- static_branch_dec(&cgroup_bpf_enabled_key[atype]) The reason is that fault injection caused update_effective_progs to fail and then changed the original prog into dummy_bpf_prog.prog in purge_effective_progs. Then a softirq came, and accessing the members of dummy_bpf_prog.prog in the softirq triggers invalid mem access. To fix it, skip updating stats when stats is NULL. Fixes: 492ecee892c2 ("bpf: enable program stats") Signed-off-by: Pu Lehui <pulehui(a)huawei.com> Link: https://lore.kernel.org/r/20251115102343.2200727-1-pulehui@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Conflicts: include/linux/filter.h kernel/bpf/syscall.c [context conflicts and no bpf_prog_inc_misses_counter] Signed-off-by: Pu Lehui <pulehui(a)huawei.com> --- include/linux/filter.h | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/include/linux/filter.h b/include/linux/filter.h index 3c43603bfb62..75c79546aae7 100644 --- a/include/linux/filter.h +++ b/include/linux/filter.h @@ -580,11 +580,13 @@ DECLARE_STATIC_KEY_FALSE(bpf_stats_enabled_key); u64 __start = sched_clock(); \ unsigned long flags; \ __ret = dfunc(ctx, (prog)->insnsi, (prog)->bpf_func); \ - __stats = this_cpu_ptr(prog->aux->stats); \ - flags = u64_stats_update_begin_irqsave(&__stats->syncp);\ - __stats->cnt++; \ - __stats->nsecs += sched_clock() - __start; \ - u64_stats_update_end_irqrestore(&__stats->syncp, flags);\ + if (likely(prog->aux && prog->aux->stats)) { \ + __stats = this_cpu_ptr(prog->aux->stats); \ + flags = u64_stats_update_begin_irqsave(&__stats->syncp);\ + __stats->cnt++; \ + __stats->nsecs += sched_clock() - __start; \ + u64_stats_update_end_irqrestore(&__stats->syncp, flags);\ + } \ } else { \ __ret = dfunc(ctx, (prog)->insnsi, (prog)->bpf_func); \ } \ -- 2.34.1

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[PATCH OLK-6.6 0/2] cgrp null
by Pu Lehui 19 Nov '25

19 Nov '25

Jose Fernandez (1): bpf: Improve program stats run-time calculation Pu Lehui (1): bpf: Fix invalid prog->stats access when update_effective_progs fails include/linux/filter.h | 16 ++++++++++------ kernel/bpf/syscall.c | 3 +++ kernel/bpf/trampoline.c | 3 ++- 3 files changed, 15 insertions(+), 7 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/8] xsched: XCU Partition
by Zicheng Qu 19 Nov '25

19 Nov '25

Alekseev Dmitry (2): xsched: Add XCU control group implementation and its backend in xsched CFS xsched: Add support for CFS quota for cgroups Konstantin Meskhidze (6): xsched: Add base vstream support xcu: Add base NPU driver support xsched: Introduce vstream management xsched: Add basic scheduler core support xsched: Add xsched RT class xsched: Add xsched CFS class arch/arm/tools/syscall.tbl | 2 +- arch/arm64/configs/openeuler_defconfig | 2 + arch/powerpc/kernel/syscalls/syscall.tbl | 2 +- arch/x86/configs/openeuler_defconfig | 2 + arch/x86/entry/syscalls/syscall_32.tbl | 2 +- arch/x86/entry/syscalls/syscall_64.tbl | 2 +- drivers/Makefile | 1 + drivers/xcu/Makefile | 2 + drivers/xcu/xcu_group.c | 380 +++++++++ include/linux/cgroup_subsys.h | 4 + include/linux/syscalls.h | 2 + include/linux/vstream.h | 91 ++ include/linux/xcu_group.h | 96 +++ include/linux/xsched.h | 514 ++++++++++++ include/uapi/asm-generic/unistd.h | 5 +- include/uapi/linux/xcu_vstream.h | 77 ++ init/Kconfig | 1 + kernel/Makefile | 1 + kernel/cgroup/cgroup.c | 2 +- kernel/xsched/Kconfig | 83 ++ kernel/xsched/Makefile | 9 + kernel/xsched/cfs.c | 237 ++++++ kernel/xsched/cfs_quota.c | 98 +++ kernel/xsched/cgroup.c | 775 ++++++++++++++++++ kernel/xsched/core.c | 526 ++++++++++++ kernel/xsched/rt.c | 281 +++++++ kernel/xsched/vstream.c | 674 +++++++++++++++ .../arch/powerpc/entry/syscalls/syscall.tbl | 2 +- .../arch/x86/entry/syscalls/syscall_64.tbl | 2 +- 29 files changed, 3866 insertions(+), 9 deletions(-) create mode 100644 drivers/xcu/Makefile create mode 100644 drivers/xcu/xcu_group.c create mode 100644 include/linux/vstream.h create mode 100644 include/linux/xcu_group.h create mode 100644 include/linux/xsched.h create mode 100644 include/uapi/linux/xcu_vstream.h create mode 100644 kernel/xsched/Kconfig create mode 100644 kernel/xsched/Makefile create mode 100644 kernel/xsched/cfs.c create mode 100644 kernel/xsched/cfs_quota.c create mode 100644 kernel/xsched/cgroup.c create mode 100644 kernel/xsched/core.c create mode 100644 kernel/xsched/rt.c create mode 100644 kernel/xsched/vstream.c -- 2.34.1

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