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[PATCH OLK-6.6 000/124] arm_mpam: support mpam feature in OLK-6.6 repo
by Zeng Heng 10 Jan '24

10 Jan '24

Amit Singh Tomar (1): fs/resctrl: Remove the limit on the number of CLOSID Babu Moger (9): x86/resctrl: Add multiple tasks to the resctrl group at once x86/resctrl: Simplify rftype flag definitions x86/resctrl: Rename rftype flags for consistency x86/resctrl: Unwind properly from rdt_enable_ctx() x86/resctrl: Move default group file creation to mount x86/resctrl: Introduce "-o debug" mount option x86/resctrl: Display CLOSID for resource group x86/resctrl: Add support for the files of MON groups only x86/resctrl: Display RMID of resource group Fenghua Yu (1): x86/resctrl: Add sparse_masks file in info James Morse (104): tick/nohz: Move tick_nohz_full_mask declaration outside the #ifdef x86/resctrl: kfree() rmid_ptrs from resctrl_exit() x86/resctrl: Create helper for RMID allocation and mondata dir creation x86/resctrl: Move rmid allocation out of mkdir_rdt_prepare() x86/resctrl: Track the closid with the rmid x86/resctrl: Access per-rmid structures by index x86/resctrl: Allow RMID allocation to be scoped by CLOSID x86/resctrl: Track the number of dirty RMID a CLOSID has x86/resctrl: Use __set_bit()/__clear_bit() instead of open coding x86/resctrl: Allocate the cleanest CLOSID by searching closid_num_dirty_rmid x86/resctrl: Move CLOSID/RMID matching and setting to use helpers x86/resctrl: Add cpumask_any_housekeeping() for limbo/overflow x86/resctrl: Queue mon_event_read() instead of sending an IPI x86/resctrl: Allow resctrl_arch_rmid_read() to sleep x86/resctrl: Allow arch to allocate memory needed in resctrl_arch_rmid_read() x86/resctrl: Make resctrl_mounted checks explicit x86/resctrl: Move alloc/mon static keys into helpers x86/resctrl: Make rdt_enable_key the arch's decision to switch x86/resctrl: Add helpers for system wide mon/alloc capable x86/resctrl: Add CPU online callback for resctrl work x86/resctrl: Allow overflow/limbo handlers to be scheduled on any-but cpu x86/resctrl: Add CPU offline callback for resctrl work x86/resctrl: Move domain helper migration into resctrl_offline_cpu() x86/resctrl: Separate arch and fs resctrl locks x86/resctrl: Add a helper to avoid reaching into the arch code resource list x86/resctrl: Move ctrlval string parsing links away from the arch code x86/resctrl: Add helper for setting CPU default properties x86/resctrl: Remove rdtgroup from update_cpu_closid_rmid() x86/resctrl: Export resctrl fs's init function x86/resctrl: Wrap resctrl_arch_find_domain() around rdt_find_domain() x86/resctrl: Move resctrl types to a separate header x86/resctrl: Add a resctrl helper to reset all the resources x86/resctrl: Move monitor init work to a resctrl init call x86/resctrl: Move monitor exit work to a restrl exit call x86/resctrl: Move max_{name,data}_width into resctrl code x86/resctrl: Stop using the for_each_*_rdt_resource() walkers x86/resctrl: Export the is_mbm_*_enabled() helpers to asm/resctrl.h x86/resctrl: Add resctrl_arch_is_evt_configurable() to abstract BMEC x86/resctrl: Change mon_event_config_{read,write}() to be arch helpers x86/resctrl: Allow resctrl_arch_mon_event_config_write() to return an error x86/resctrl: Allow an architecture to disable pseudo lock x86/resctrl: Make prefetch_disable_bits belong to the arch code x86/resctrl: Make resctrl_arch_pseudo_lock_fn() take a plr x86/resctrl: Move thread_throttle_mode_init() to be managed by resctrl x86/resctrl: Move get_config_index() to a header x86/resctrl: Claim get_domain_from_cpu() for resctrl x86/resctrl: Describe resctrl's bitmap size assumptions x86/resctrl: Drop __init/__exit on assorted symbols fs/resctrl: Add boiler plate for external resctrl code x86/resctrl: Move the filesystem bits to headers visible to fs/resctrl x86/resctrl: Move the filesystem portions of resctrl to live in '/fs/' arm64: head.S: Initialise MPAM EL2 registers and disable traps arm64: cpufeature: discover CPU support for MPAM KVM: arm64: Fix missing traps of guest accesses to the MPAM registers KVM: arm64: Disable MPAM visibility by default, and handle traps arm64: mpam: Context switch the MPAM registers untested: KVM: arm64: Force guest EL1 to use user-space's partid configuration ACPI / PPTT: Provide a helper to walk processor containers ACPI / PPTT: Find PPTT cache level by ID ACPI / PPTT: Add a helper to fill a cpumask from a processor container ACPI / PPTT: Add a helper to fill a cpumask from a cache_id cacheinfo: Expose the code to generate a cache-id from a device_node drivers: base: cacheinfo: Add helper to find the cache size from cpu+level ACPI / MPAM: Parse the MPAM table arm_mpam: Add probe/remove for mpam msc driver and kbuild boiler plate arm_mpam: Add the class and component structures for ris firmware described arm_mpam: Add MPAM MSC register layout definitions arm_mpam: Add cpuhp callbacks to probe MSC hardware arm_mpam: Probe MSCs to find the supported partid/pmg values arm_mpam: Probe the hardware features resctrl supports arm_mpam: Merge supported features during mpam_enable() into mpam_class arm_mpam: Reset MSC controls from cpu hp callbacks arm_mpam: Add a helper to touch an MSC from any CPU arm_mpam: Extend reset logic to allow devices to be reset any time arm_mpam: Register and enable IRQs arm_mpam: Use the arch static key to indicate when mpam is enabled arm_mpam: Allow configuration to be applied and restored during cpu online arm_mpam: Probe and reset the rest of the features arm_mpam: Add helpers to allocate monitors arm_mpam: Add mpam_msmon_read() to read monitor value arm_mpam: Track bandwidth counter state for overflow and power management arm_mpam: Add helper to reset saved mbwu state arm_mpam: resctrl: Add boilerplate cpuhp and domain allocation arm_mpam: resctrl: Pick the caches we will use as resctrl resources arm_mpam: resctrl: Pick a value for num_rmid arm_mpam: resctrl: Implement resctrl_arch_reset_resources() arm_mpam: resctrl: Add resctrl_arch_get_config() arm_mpam: resctrl: Implement helpers to update configuration arm_mpam: resctrl: Add CDP emulation arm64: mpam: Add helpers to change a tasks and cpu mpam partid/pmg values arm_mpam: resctrl: Add rmid index helpers untested: arm_mpam: resctrl: Add support for MB resource untested: arm_mpam: resctrl: Add support for mbm counters arm_mpam: resctrl: Allow resctrl to allocate monitors arm_mpam: resctrl: Add resctrl_arch_rmid_read() and resctrl_arch_reset_rmid() untested: arm_mpam: resctrl: Allow monitors to be configured arm_mpam: resctrl: Add empty definitions for pseudo lock arm_mpam: resctrl: Add empty definitions for fine-grained enables arm_mpam: resctrl: Add dummy definition for free running counters arm64: mpam: Select ARCH_HAS_CPU_RESCTRL perf/arm-cmn: Stop claiming all the resources arm_mpam: resctrl: Tell resctrl about cpu/domain online/offline arm_mpam: resctrl: Call resctrl_exit() in the event of errors arm_mpam: resctrl: Update the rmid reallocation limit Maciej Wieczor-Retman (3): x86/resctrl: Fix remaining kernel-doc warnings x86/resctrl: Rename arch_has_sparse_bitmaps x86/resctrl: Enable non-contiguous CBMs in Intel CAT Rob Herring (3): cacheinfo: Allow for >32-bit cache 'id' cacheinfo: Set cache 'id' based on DT data dt-bindings: arm: Add MPAM MSC binding Rohit Mathew (2): arm_mpam: Probe for long/lwd mbwu counters arm_mpam: Use long MBWU counters if supported Zeng Heng (1): arm_mpam: control memory bandwidth with hard limit flag .../arch/arm64/cpu-feature-registers.rst | 2 + Documentation/arch/x86/resctrl.rst | 22 +- .../devicetree/bindings/arm/arm,mpam-msc.yaml | 227 + MAINTAINERS | 2 + arch/Kconfig | 8 + arch/arm64/Kconfig | 22 +- arch/arm64/include/asm/cpu.h | 1 + arch/arm64/include/asm/cpufeature.h | 13 + arch/arm64/include/asm/el2_setup.h | 16 + arch/arm64/include/asm/kvm_arm.h | 1 + arch/arm64/include/asm/mpam.h | 167 + arch/arm64/include/asm/resctrl.h | 1 + arch/arm64/include/asm/sysreg.h | 8 + arch/arm64/include/asm/thread_info.h | 3 + arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/cpufeature.c | 68 + arch/arm64/kernel/cpuinfo.c | 4 + arch/arm64/kernel/image-vars.h | 5 + arch/arm64/kernel/mpam.c | 23 + arch/arm64/kernel/process.c | 7 + arch/arm64/kvm/hyp/include/hyp/switch.h | 32 + arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 27 + arch/arm64/kvm/hyp/nvhe/switch.c | 11 + arch/arm64/kvm/hyp/vhe/sysreg-sr.c | 1 + arch/arm64/kvm/sys_regs.c | 70 +- arch/arm64/tools/cpucaps | 1 + arch/arm64/tools/sysreg | 33 + arch/x86/Kconfig | 5 +- arch/x86/include/asm/resctrl.h | 131 +- arch/x86/kernel/cpu/resctrl/core.c | 212 +- arch/x86/kernel/cpu/resctrl/ctrlmondata.c | 476 +- arch/x86/kernel/cpu/resctrl/internal.h | 394 +- arch/x86/kernel/cpu/resctrl/monitor.c | 594 +-- arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 1123 +---- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 3916 +--------------- drivers/acpi/arm64/Kconfig | 3 + drivers/acpi/arm64/Makefile | 2 + drivers/acpi/arm64/mpam.c | 369 ++ drivers/acpi/pptt.c | 278 +- drivers/acpi/tables.c | 2 +- drivers/base/cacheinfo.c | 41 +- drivers/perf/arm-cmn.c | 12 +- drivers/platform/Kconfig | 2 + drivers/platform/Makefile | 1 + drivers/platform/mpam/Kconfig | 8 + drivers/platform/mpam/Makefile | 1 + drivers/platform/mpam/mpam_devices.c | 2422 ++++++++++ drivers/platform/mpam/mpam_internal.h | 576 +++ drivers/platform/mpam/mpam_resctrl.c | 1209 +++++ fs/Kconfig | 1 + fs/Makefile | 1 + fs/resctrl/Kconfig | 23 + fs/resctrl/Makefile | 1 + fs/resctrl/ctrlmondata.c | 528 +++ fs/resctrl/internal.h | 313 ++ fs/resctrl/monitor.c | 859 ++++ fs/resctrl/psuedo_lock.c | 1134 +++++ fs/resctrl/rdtgroup.c | 4015 +++++++++++++++++ include/linux/acpi.h | 17 + include/linux/arm_mpam.h | 105 + include/linux/cacheinfo.h | 30 +- include/linux/resctrl.h | 203 +- include/linux/resctrl_types.h | 98 + include/linux/tick.h | 9 +- 64 files changed, 13418 insertions(+), 6472 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/arm,mpam-msc.yaml create mode 100644 arch/arm64/include/asm/mpam.h create mode 100644 arch/arm64/include/asm/resctrl.h create mode 100644 arch/arm64/kernel/mpam.c create mode 100644 drivers/acpi/arm64/mpam.c create mode 100644 drivers/platform/mpam/Kconfig create mode 100644 drivers/platform/mpam/Makefile create mode 100644 drivers/platform/mpam/mpam_devices.c create mode 100644 drivers/platform/mpam/mpam_internal.h create mode 100644 drivers/platform/mpam/mpam_resctrl.c create mode 100644 fs/resctrl/Kconfig create mode 100644 fs/resctrl/Makefile create mode 100644 fs/resctrl/ctrlmondata.c create mode 100644 fs/resctrl/internal.h create mode 100644 fs/resctrl/monitor.c create mode 100644 fs/resctrl/psuedo_lock.c create mode 100644 fs/resctrl/rdtgroup.c create mode 100644 include/linux/arm_mpam.h create mode 100644 include/linux/resctrl_types.h -- 2.25.1

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[PATCH OLK-6.6 000/124] arm_mpam: support mpam feature in OLK-6.6 repo
by Zeng Heng 10 Jan '24

10 Jan '24

Amit Singh Tomar (1): fs/resctrl: Remove the limit on the number of CLOSID Babu Moger (9): x86/resctrl: Add multiple tasks to the resctrl group at once x86/resctrl: Simplify rftype flag definitions x86/resctrl: Rename rftype flags for consistency x86/resctrl: Unwind properly from rdt_enable_ctx() x86/resctrl: Move default group file creation to mount x86/resctrl: Introduce "-o debug" mount option x86/resctrl: Display CLOSID for resource group x86/resctrl: Add support for the files of MON groups only x86/resctrl: Display RMID of resource group Fenghua Yu (1): x86/resctrl: Add sparse_masks file in info James Morse (104): tick/nohz: Move tick_nohz_full_mask declaration outside the #ifdef x86/resctrl: kfree() rmid_ptrs from resctrl_exit() x86/resctrl: Create helper for RMID allocation and mondata dir creation x86/resctrl: Move rmid allocation out of mkdir_rdt_prepare() x86/resctrl: Track the closid with the rmid x86/resctrl: Access per-rmid structures by index x86/resctrl: Allow RMID allocation to be scoped by CLOSID x86/resctrl: Track the number of dirty RMID a CLOSID has x86/resctrl: Use __set_bit()/__clear_bit() instead of open coding x86/resctrl: Allocate the cleanest CLOSID by searching closid_num_dirty_rmid x86/resctrl: Move CLOSID/RMID matching and setting to use helpers x86/resctrl: Add cpumask_any_housekeeping() for limbo/overflow x86/resctrl: Queue mon_event_read() instead of sending an IPI x86/resctrl: Allow resctrl_arch_rmid_read() to sleep x86/resctrl: Allow arch to allocate memory needed in resctrl_arch_rmid_read() x86/resctrl: Make resctrl_mounted checks explicit x86/resctrl: Move alloc/mon static keys into helpers x86/resctrl: Make rdt_enable_key the arch's decision to switch x86/resctrl: Add helpers for system wide mon/alloc capable x86/resctrl: Add CPU online callback for resctrl work x86/resctrl: Allow overflow/limbo handlers to be scheduled on any-but cpu x86/resctrl: Add CPU offline callback for resctrl work x86/resctrl: Move domain helper migration into resctrl_offline_cpu() x86/resctrl: Separate arch and fs resctrl locks x86/resctrl: Add a helper to avoid reaching into the arch code resource list x86/resctrl: Move ctrlval string parsing links away from the arch code x86/resctrl: Add helper for setting CPU default properties x86/resctrl: Remove rdtgroup from update_cpu_closid_rmid() x86/resctrl: Export resctrl fs's init function x86/resctrl: Wrap resctrl_arch_find_domain() around rdt_find_domain() x86/resctrl: Move resctrl types to a separate header x86/resctrl: Add a resctrl helper to reset all the resources x86/resctrl: Move monitor init work to a resctrl init call x86/resctrl: Move monitor exit work to a restrl exit call x86/resctrl: Move max_{name,data}_width into resctrl code x86/resctrl: Stop using the for_each_*_rdt_resource() walkers x86/resctrl: Export the is_mbm_*_enabled() helpers to asm/resctrl.h x86/resctrl: Add resctrl_arch_is_evt_configurable() to abstract BMEC x86/resctrl: Change mon_event_config_{read,write}() to be arch helpers x86/resctrl: Allow resctrl_arch_mon_event_config_write() to return an error x86/resctrl: Allow an architecture to disable pseudo lock x86/resctrl: Make prefetch_disable_bits belong to the arch code x86/resctrl: Make resctrl_arch_pseudo_lock_fn() take a plr x86/resctrl: Move thread_throttle_mode_init() to be managed by resctrl x86/resctrl: Move get_config_index() to a header x86/resctrl: Claim get_domain_from_cpu() for resctrl x86/resctrl: Describe resctrl's bitmap size assumptions x86/resctrl: Drop __init/__exit on assorted symbols fs/resctrl: Add boiler plate for external resctrl code x86/resctrl: Move the filesystem bits to headers visible to fs/resctrl x86/resctrl: Move the filesystem portions of resctrl to live in '/fs/' arm64: head.S: Initialise MPAM EL2 registers and disable traps arm64: cpufeature: discover CPU support for MPAM KVM: arm64: Fix missing traps of guest accesses to the MPAM registers KVM: arm64: Disable MPAM visibility by default, and handle traps arm64: mpam: Context switch the MPAM registers untested: KVM: arm64: Force guest EL1 to use user-space's partid configuration ACPI / PPTT: Provide a helper to walk processor containers ACPI / PPTT: Find PPTT cache level by ID ACPI / PPTT: Add a helper to fill a cpumask from a processor container ACPI / PPTT: Add a helper to fill a cpumask from a cache_id cacheinfo: Expose the code to generate a cache-id from a device_node drivers: base: cacheinfo: Add helper to find the cache size from cpu+level ACPI / MPAM: Parse the MPAM table arm_mpam: Add probe/remove for mpam msc driver and kbuild boiler plate arm_mpam: Add the class and component structures for ris firmware described arm_mpam: Add MPAM MSC register layout definitions arm_mpam: Add cpuhp callbacks to probe MSC hardware arm_mpam: Probe MSCs to find the supported partid/pmg values arm_mpam: Probe the hardware features resctrl supports arm_mpam: Merge supported features during mpam_enable() into mpam_class arm_mpam: Reset MSC controls from cpu hp callbacks arm_mpam: Add a helper to touch an MSC from any CPU arm_mpam: Extend reset logic to allow devices to be reset any time arm_mpam: Register and enable IRQs arm_mpam: Use the arch static key to indicate when mpam is enabled arm_mpam: Allow configuration to be applied and restored during cpu online arm_mpam: Probe and reset the rest of the features arm_mpam: Add helpers to allocate monitors arm_mpam: Add mpam_msmon_read() to read monitor value arm_mpam: Track bandwidth counter state for overflow and power management arm_mpam: Add helper to reset saved mbwu state arm_mpam: resctrl: Add boilerplate cpuhp and domain allocation arm_mpam: resctrl: Pick the caches we will use as resctrl resources arm_mpam: resctrl: Pick a value for num_rmid arm_mpam: resctrl: Implement resctrl_arch_reset_resources() arm_mpam: resctrl: Add resctrl_arch_get_config() arm_mpam: resctrl: Implement helpers to update configuration arm_mpam: resctrl: Add CDP emulation arm64: mpam: Add helpers to change a tasks and cpu mpam partid/pmg values arm_mpam: resctrl: Add rmid index helpers untested: arm_mpam: resctrl: Add support for MB resource untested: arm_mpam: resctrl: Add support for mbm counters arm_mpam: resctrl: Allow resctrl to allocate monitors arm_mpam: resctrl: Add resctrl_arch_rmid_read() and resctrl_arch_reset_rmid() untested: arm_mpam: resctrl: Allow monitors to be configured arm_mpam: resctrl: Add empty definitions for pseudo lock arm_mpam: resctrl: Add empty definitions for fine-grained enables arm_mpam: resctrl: Add dummy definition for free running counters arm64: mpam: Select ARCH_HAS_CPU_RESCTRL perf/arm-cmn: Stop claiming all the resources arm_mpam: resctrl: Tell resctrl about cpu/domain online/offline arm_mpam: resctrl: Call resctrl_exit() in the event of errors arm_mpam: resctrl: Update the rmid reallocation limit Maciej Wieczor-Retman (3): x86/resctrl: Fix remaining kernel-doc warnings x86/resctrl: Rename arch_has_sparse_bitmaps x86/resctrl: Enable non-contiguous CBMs in Intel CAT Rob Herring (3): cacheinfo: Allow for >32-bit cache 'id' cacheinfo: Set cache 'id' based on DT data dt-bindings: arm: Add MPAM MSC binding Rohit Mathew (2): arm_mpam: Probe for long/lwd mbwu counters arm_mpam: Use long MBWU counters if supported Zeng Heng (1): arm_mpam: control memory bandwidth with hard limit flag .../arch/arm64/cpu-feature-registers.rst | 2 + Documentation/arch/x86/resctrl.rst | 22 +- .../devicetree/bindings/arm/arm,mpam-msc.yaml | 227 + MAINTAINERS | 2 + arch/Kconfig | 8 + arch/arm64/Kconfig | 22 +- arch/arm64/include/asm/cpu.h | 1 + arch/arm64/include/asm/cpufeature.h | 13 + arch/arm64/include/asm/el2_setup.h | 16 + arch/arm64/include/asm/kvm_arm.h | 1 + arch/arm64/include/asm/mpam.h | 167 + arch/arm64/include/asm/resctrl.h | 1 + arch/arm64/include/asm/sysreg.h | 8 + arch/arm64/include/asm/thread_info.h | 3 + arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/cpufeature.c | 68 + arch/arm64/kernel/cpuinfo.c | 4 + arch/arm64/kernel/image-vars.h | 5 + arch/arm64/kernel/mpam.c | 23 + arch/arm64/kernel/process.c | 7 + arch/arm64/kvm/hyp/include/hyp/switch.h | 32 + arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h | 27 + arch/arm64/kvm/hyp/nvhe/switch.c | 11 + arch/arm64/kvm/hyp/vhe/sysreg-sr.c | 1 + arch/arm64/kvm/sys_regs.c | 70 +- arch/arm64/tools/cpucaps | 1 + arch/arm64/tools/sysreg | 33 + arch/x86/Kconfig | 5 +- arch/x86/include/asm/resctrl.h | 131 +- arch/x86/kernel/cpu/resctrl/core.c | 212 +- arch/x86/kernel/cpu/resctrl/ctrlmondata.c | 476 +- arch/x86/kernel/cpu/resctrl/internal.h | 394 +- arch/x86/kernel/cpu/resctrl/monitor.c | 594 +-- arch/x86/kernel/cpu/resctrl/pseudo_lock.c | 1123 +---- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 3916 +--------------- drivers/acpi/arm64/Kconfig | 3 + drivers/acpi/arm64/Makefile | 2 + drivers/acpi/arm64/mpam.c | 369 ++ drivers/acpi/pptt.c | 278 +- drivers/acpi/tables.c | 2 +- drivers/base/cacheinfo.c | 41 +- drivers/perf/arm-cmn.c | 12 +- drivers/platform/Kconfig | 2 + drivers/platform/Makefile | 1 + drivers/platform/mpam/Kconfig | 8 + drivers/platform/mpam/Makefile | 1 + drivers/platform/mpam/mpam_devices.c | 2422 ++++++++++ drivers/platform/mpam/mpam_internal.h | 576 +++ drivers/platform/mpam/mpam_resctrl.c | 1209 +++++ fs/Kconfig | 1 + fs/Makefile | 1 + fs/resctrl/Kconfig | 23 + fs/resctrl/Makefile | 1 + fs/resctrl/ctrlmondata.c | 528 +++ fs/resctrl/internal.h | 313 ++ fs/resctrl/monitor.c | 859 ++++ fs/resctrl/psuedo_lock.c | 1134 +++++ fs/resctrl/rdtgroup.c | 4015 +++++++++++++++++ include/linux/acpi.h | 17 + include/linux/arm_mpam.h | 105 + include/linux/cacheinfo.h | 30 +- include/linux/resctrl.h | 203 +- include/linux/resctrl_types.h | 98 + include/linux/tick.h | 9 +- 64 files changed, 13418 insertions(+), 6472 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/arm,mpam-msc.yaml create mode 100644 arch/arm64/include/asm/mpam.h create mode 100644 arch/arm64/include/asm/resctrl.h create mode 100644 arch/arm64/kernel/mpam.c create mode 100644 drivers/acpi/arm64/mpam.c create mode 100644 drivers/platform/mpam/Kconfig create mode 100644 drivers/platform/mpam/Makefile create mode 100644 drivers/platform/mpam/mpam_devices.c create mode 100644 drivers/platform/mpam/mpam_internal.h create mode 100644 drivers/platform/mpam/mpam_resctrl.c create mode 100644 fs/resctrl/Kconfig create mode 100644 fs/resctrl/Makefile create mode 100644 fs/resctrl/ctrlmondata.c create mode 100644 fs/resctrl/internal.h create mode 100644 fs/resctrl/monitor.c create mode 100644 fs/resctrl/psuedo_lock.c create mode 100644 fs/resctrl/rdtgroup.c create mode 100644 include/linux/arm_mpam.h create mode 100644 include/linux/resctrl_types.h -- 2.25.1

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[PATCH OLK-6.6 0/3] sync vgic-its from 5.10 to 6.6
by jiaqingtong 10 Jan '24

10 Jan '24

sync vgic-its from 5.10 to 6.6 Heyi Guo (1): KVM: arm64: vgic-its: Flush pending LPIs when nuking DT Xiangyou Xie (2): KVM: arm/arm64: vgic-its: Introduce multiple LPI translation caches KVM: arm/arm64: vgic-its: Do not execute invalidate MSI-LPI translation cache on movi command arch/arm64/kvm/vgic/vgic-init.c | 8 +- arch/arm64/kvm/vgic/vgic-its.c | 255 +++++++++++++++++++++----------- include/kvm/arm_vgic.h | 13 +- 3 files changed, 183 insertions(+), 93 deletions(-) base-commit: ade260241330687a9006159f604a00deac794776 -- 2.43.GIT

2 4

[PATCH OLK-6.6 0/3] sync vgic-its from 5.10 to 6.6
by jiaqingtong 10 Jan '24

10 Jan '24

sync vgic-its from 5.10 to 6.6 Heyi Guo (1): KVM: arm64: vgic-its: Flush pending LPIs when nuking DT Xiangyou Xie (2): KVM: arm/arm64: vgic-its: Introduce multiple LPI translation caches KVM: arm/arm64: vgic-its: Do not execute invalidate MSI-LPI translation cache on movi command arch/arm64/kvm/vgic/vgic-init.c | 8 +- arch/arm64/kvm/vgic/vgic-its.c | 255 +++++++++++++++++++++----------- include/kvm/arm_vgic.h | 13 +- 3 files changed, 183 insertions(+), 93 deletions(-) base-commit: ade260241330687a9006159f604a00deac794776 -- 2.43.GIT

2 4

[PATCH OLK-6.6 0/3] backport OLK-5.10 pci sub-system patches to OLK-6.6
by Jiangtian Feng 10 Jan '24

10 Jan '24

*** BLURB HERE *** Jiangtian Feng (3): Author: geruijun <geruijun(a)huawei.com> Date: Mon Dec 27 19:43:22 2021 +0800 Author: Bo Wu <wubo40(a)huawei.com> Date: Mon Dec 27 19:43:24 2021 +0800 Author: Ruijun Ge <geruijun(a)huawei.com> Date: Mon Dec 27 19:43:25 2021 +0800 drivers/pci/quirks.c | 27 +++++++++++++++++++++++++++ include/linux/pci_ids.h | 3 +++ 2 files changed, 30 insertions(+) -- 2.33.0

2 4

[PATCH OLK-6.6 00/31] SMMU HTTU sync from 5.10
by jiaqingtong 10 Jan '24

10 Jan '24

SMMU HTTU sync from 5.10 Jean-Philippe Brucker (1): iommu/arm-smmu-v3: Add support for Hardware Translation Table Update Keqian Zhu (3): iommu: Introduce dirty log tracking framework vfio/iommu_type1: Fix the logic of updating num_non_hwdbm_domains iommu: Stop tracking the dirty log status of iommu_domain Kunkun Jiang (18): iommu/io-pgtable-arm: Add quirk ARM_HD and ARM_BBMLx iommu/io-pgtable-arm: Fix attach device failed when smmuv3 supports HTTU iommu/io-pgtable-arm: Add and realize split_block ops iommu/io-pgtable-arm: Add and realize merge_page ops iommu/io-pgtable-arm: Add and realize sync_dirty_log ops iommu/io-pgtable-arm: Add and realize clear_dirty_log ops iommu/arm-smmu-v3: Add feature detection for BBML iommu/arm-smmu-v3: Realize switch_dirty_log iommu ops iommu/arm-smmu-v3: Realize sync_dirty_log iommu ops iommu/arm-smmu-v3: Realize clear_dirty_log iommu ops iommu/arm-smmu-v3: Realize support_dirty_log iommu ops vfio/iommu_type1: Add HWDBM status maintenance vfio/iommu_type1: Optimize dirty bitmap population based on iommu HWDBM vfio/iommu_type1: Add support for manual dirty log clear vfio/iommu_type1: replace kvmalloc with kvzalloc and kfree with kvfree iommu/arm-smmu-v3: Enable HTTU for stage1 with io-pgtable mapping iommu: Fix compliation failure caused by iommu_device_register vfio/iommu: Fix uncorrect type parameters which used in bitmap operations jiaqingtong (9): fix conflit with 41e1eb2546e9c8200d32f11e4b47d86d156a5a97("iommu/io-pgtable-arm: Prepare PTE methods for handling multiple entries") fix conflit with 41e1eb2546e9c8200d32f11e4b47d86d156a5a97("iommu/io-pgtable-arm: Prepare PTE methods for handling multiple entries") previes commits delete __arm_lpae_set_pte, add it back. Fixes: 1fe27be5ffec ("iommu/io-pgtable-arm: Implement arm_lpae_unmap_pages()") fix d86d9f910d53 ,change iommu_pgsize's para previes commits delete __arm_lpae_set_pte, add it back. Fixes: 1fe27be5ffec ("iommu/io-pgtable-arm: Implement arm_lpae_unmap_pages()") vfio_domain delete port member. Fixes: 71cfafda9c9b ("vfio: Move the Intel no-snoop control off of IOMMU_CACHE") iommu:Introduce dirty log tracking framework: conflit with 9abe2ac834851a7d0b0756e295cf7a292c45ca53 change to arm_lpae_install_table to accept arm_lpae_iopte previes commits delete __arm_lpae_set_pte, add it back. Fixes: 1fe27be5ffec ("iommu/io-pgtable-arm: Implement arm_lpae_unmap_pages()") conflit with 9a630a4b,need move to iommu_domain_ops conflit with ec288a2c, change func .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 2 + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 268 +++++++++++- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 17 +- drivers/iommu/io-pgtable-arm.c | 411 +++++++++++++++++- drivers/iommu/iommu.c | 188 +++++++- drivers/vfio/vfio_iommu_type1.c | 314 ++++++++++++- include/linux/io-pgtable.h | 23 + include/linux/iommu.h | 67 +++ include/trace/events/iommu.h | 63 +++ include/uapi/linux/vfio.h | 36 +- 10 files changed, 1365 insertions(+), 24 deletions(-) base-commit: f898c7c8c095242ad10bfff5c1f8c52c64488f96 -- 2.43.GIT

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[PATCH OLK-6.6 0/3] sync vgic-its from 5.10 to 6.6
by jiaqingtong 10 Jan '24

10 Jan '24

sync vgic-its from 5.10 to 6.6 Heyi Guo (1): KVM: arm64: vgic-its: Flush pending LPIs when nuking DT Xiangyou Xie (2): KVM: arm/arm64: vgic-its: Introduce multiple LPI translation caches KVM: arm/arm64: vgic-its: Do not execute invalidate MSI-LPI translation cache on movi command arch/arm64/kvm/vgic/vgic-init.c | 8 +- arch/arm64/kvm/vgic/vgic-its.c | 255 +++++++++++++++++++++----------- include/kvm/arm_vgic.h | 13 +- 3 files changed, 183 insertions(+), 93 deletions(-) base-commit: ade260241330687a9006159f604a00deac794776 -- 2.43.GIT

2 4

[PATCH OLK-6.6 v8 0/6] block: Add config to show info about opening a mounted device for write
by Li Lingfeng 10 Jan '24

10 Jan '24

v1->v2: 1) Replace BLK_DEV_DUMPINFO with BLK_DEV_WRITE_MOUNTED_QUIET, which is logically opposite; 2) Make BLK_DEV_WRITE_MOUNTED_QUIET dependent on BLK_DEV_WRITE_MOUNTED, and decide whether to set bd_writers by BLK_DEV_WRITE_MOUNTED_QUIET; 3) Move bdev_dump_info() into bdev_may_open(); 4) Add the cmdline interface to control whether to show info; 5) Pass the state of "writes blocked" to part0 when mounting a partition. v2->v3: Add restriction for modifying bd_writers. v3->v4: 1) Count bd_writers regardless of whether bdev_allow_write_mounted is set; 2) Expand the meaning of bdev_allow_write_mounted; 3) Add config option to detect writing to part0 while partitions mounted; 4) Add bd_mounters to record the number of times that part0 or partition is mounted; 5) Show info about opening a lower device for write while upper-layers mounted. v4->v5: Move introduction of bd_mounters to patch1. v5->v6: Delete redundant conflict judgment. v6->v7: 1) Replace BLK_DEV_WRITE_MOUNTED_QUIET with BLK_DEV_WRITE_MOUNTED_DUMP; 2) Remove restriction for setting bdev_allow_write_mounted by cmdline. v7->v8: 1) Add detection of mounting part0 while partitions write opened; 2) Add detection of writing partitions while part0 mounted; 3) Add config in openeuler_defconfig. Li Lingfeng (6): block: Count writers and mounters regardless of whether bdev_allow_write_mounted is set block: Expand the meaning of bdev_allow_write_mounted block: Add config option to detect writing to part0 while partitions mounted block: Add config option to show info about opening a mounted device for write block: Show info about opening a lower device for write while upper-layers mounted add config about writing mounted devices in openeuler_defconfig arch/arm64/configs/openeuler_defconfig | 3 + arch/x86/configs/openeuler_defconfig | 3 + block/Kconfig | 17 ++++ block/bdev.c | 122 +++++++++++++++++++++---- include/linux/blk_types.h | 1 + 5 files changed, 129 insertions(+), 17 deletions(-) -- 2.31.1

2 7

[PATCH OLK-6.6] pid_ns: Make pid_max per namespace
by Yi Yang 10 Jan '24

10 Jan '24

From: Li Zefan <lizefan(a)huawei.com> euler inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8TCPY ------------------------------------------------- The adjusted pid_max on the host also takes effect in the container. Move pid_max to pid_namespace to fix this problem. Signed-off-by: Li Zefan <lizefan(a)huawei.com> Signed-off-by: Yi Yang <yiyang13(a)huawei.com> --- arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + include/linux/pid.h | 2 + include/linux/pid_namespace.h | 3 ++ init/Kconfig | 6 +++ kernel/pid.c | 54 +++++++++++++++++++++++++- kernel/pid_namespace.c | 13 +++++++ kernel/sysctl.c | 2 + kernel/trace/pid_list.c | 4 ++ kernel/trace/trace.c | 4 ++ kernel/trace/trace.h | 2 + 11 files changed, 90 insertions(+), 2 deletions(-) diff --git a/arch/arm64/configs/openeuler_defconfig b/arch/arm64/configs/openeuler_defconfig index 9a053bc885dd..a040a64a8350 100644 --- a/arch/arm64/configs/openeuler_defconfig +++ b/arch/arm64/configs/openeuler_defconfig @@ -999,6 +999,7 @@ CONFIG_ARCH_USE_QUEUED_RWLOCKS=y CONFIG_QUEUED_RWLOCKS=y CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y +CONFIG_PID_MAX_PER_NAMESPACE=y CONFIG_FREEZER=y # diff --git a/arch/x86/configs/openeuler_defconfig b/arch/x86/configs/openeuler_defconfig index 4bf011ed6307..e5dd6035346e 100644 --- a/arch/x86/configs/openeuler_defconfig +++ b/arch/x86/configs/openeuler_defconfig @@ -1015,6 +1015,7 @@ CONFIG_QUEUED_RWLOCKS=y CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE=y CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE=y CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y +CONFIG_PID_MAX_PER_NAMESPACE=y CONFIG_FREEZER=y # diff --git a/include/linux/pid.h b/include/linux/pid.h index 653a527574c4..b90bc447d2a2 100644 --- a/include/linux/pid.h +++ b/include/linux/pid.h @@ -113,8 +113,10 @@ extern void transfer_pid(struct task_struct *old, struct task_struct *new, struct pid_namespace; extern struct pid_namespace init_pid_ns; +#ifndef CONFIG_PID_MAX_PER_NAMESPACE extern int pid_max; extern int pid_max_min, pid_max_max; +#endif /* * look up a PID in the hash table. Must be called with the tasklist_lock diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h index f9f9931e02d6..0a7c6dab0b7b 100644 --- a/include/linux/pid_namespace.h +++ b/include/linux/pid_namespace.h @@ -36,6 +36,9 @@ struct pid_namespace { #endif struct user_namespace *user_ns; struct ucounts *ucounts; +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + int pid_max; +#endif int reboot; /* group exit code if this pidns was rebooted */ struct ns_common ns; #if defined(CONFIG_SYSCTL) && defined(CONFIG_MEMFD_CREATE) diff --git a/init/Kconfig b/init/Kconfig index 869eea4108d0..d52550d35427 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -2104,3 +2104,9 @@ config ARCH_HAS_SYNC_CORE_BEFORE_USERMODE # <asm/syscall_wrapper.h>. config ARCH_HAS_SYSCALL_WRAPPER def_bool n + +config PID_MAX_PER_NAMESPACE + bool "Make pid_max per namespace" + default n + help + Say Y here to enable make pid_max per namespace. diff --git a/kernel/pid.c b/kernel/pid.c index 383abde0c208..db99713600fc 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -59,12 +59,16 @@ struct pid init_struct_pid = { }, } }; -int pid_max = PID_MAX_DEFAULT; - #define RESERVED_PIDS 300 +#ifndef CONFIG_PID_MAX_PER_NAMESPACE +int pid_max = PID_MAX_DEFAULT; int pid_max_min = RESERVED_PIDS + 1; int pid_max_max = PID_MAX_LIMIT; +#else +static int pid_max_min = RESERVED_PIDS + 1; +static int pid_max_max = PID_MAX_LIMIT; +#endif /* * PID-map pages start out as NULL, they get allocated upon @@ -80,6 +84,9 @@ struct pid_namespace init_pid_ns = { .child_reaper = &init_task, .user_ns = &init_user_ns, .ns.inum = PROC_PID_INIT_INO, +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + .pid_max = PID_MAX_DEFAULT, +#endif #ifdef CONFIG_PID_NS .ns.ops = &pidns_operations, #endif @@ -194,7 +201,11 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid, tid = set_tid[ns->level - i]; retval = -EINVAL; +#ifndef CONFIG_PID_MAX_PER_NAMESPACE if (tid < 1 || tid >= pid_max) +#else + if (tid < 1 || tid >= task_active_pid_ns(current)->pid_max) +#endif goto out_free; /* * Also fail if a PID != 1 is requested and @@ -234,7 +245,11 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid, * a partially initialized PID (see below). */ nr = idr_alloc_cyclic(&tmp->idr, NULL, pid_min, +#ifndef CONFIG_PID_MAX_PER_NAMESPACE pid_max, GFP_ATOMIC); +#else + tmp->pid_max, GFP_ATOMIC); +#endif } spin_unlock_irq(&pidmap_lock); idr_preload_end(); @@ -646,8 +661,37 @@ SYSCALL_DEFINE2(pidfd_open, pid_t, pid, unsigned int, flags) return fd; } +#ifdef CONFIG_PID_MAX_PER_NAMESPACE +static int proc_dointvec_pidmax(struct ctl_table *table, int write, + void __user *buffer, size_t *lenp, loff_t *ppos) +{ + struct ctl_table tmp; + + tmp = *table; + tmp.data = &task_active_pid_ns(current)->pid_max; + + return proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); +} + +static struct ctl_table pid_ctl_table[] = { + { + .procname = "pid_max", + .data = &init_pid_ns.pid_max, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec_pidmax, + .extra1 = &pid_max_min, + .extra2 = &pid_max_max, + }, + {} +}; +#endif + void __init pid_idr_init(void) { +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + int pid_max = init_pid_ns.pid_max; +#endif /* Verify no one has done anything silly: */ BUILD_BUG_ON(PID_MAX_LIMIT >= PIDNS_ADDING); @@ -658,6 +702,9 @@ void __init pid_idr_init(void) PIDS_PER_CPU_MIN * num_possible_cpus()); pr_info("pid_max: default: %u minimum: %u\n", pid_max, pid_max_min); +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + init_pid_ns.pid_max = pid_max; +#endif idr_init(&init_pid_ns.idr); init_pid_ns.pid_cachep = kmem_cache_create("pid", @@ -665,6 +712,9 @@ void __init pid_idr_init(void) __alignof__(struct pid), SLAB_HWCACHE_ALIGN | SLAB_PANIC | SLAB_ACCOUNT, NULL); +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + register_sysctl_init("kernel", pid_ctl_table); +#endif } static struct file *__pidfd_fget(struct task_struct *task, int fd) diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 619972c78774..c837b1096dcb 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -110,6 +110,9 @@ static struct pid_namespace *create_pid_namespace(struct user_namespace *user_ns ns->user_ns = get_user_ns(user_ns); ns->ucounts = ucounts; ns->pid_allocated = PIDNS_ADDING; +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + ns->pid_max = parent_pid_ns->pid_max; +#endif #if defined(CONFIG_SYSCTL) && defined(CONFIG_MEMFD_CREATE) ns->memfd_noexec_scope = pidns_memfd_noexec_scope(parent_pid_ns); #endif @@ -295,6 +298,10 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write, next = idr_get_cursor(&pid_ns->idr) - 1; tmp.data = &next; +#ifdef CONFIG_PID_MAX_PER_NAMESPACE + tmp.extra2 = &pid_ns->pid_max; +#endif + ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); if (!ret && write) idr_set_cursor(&pid_ns->idr, next + 1); @@ -302,7 +309,9 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write, return ret; } +#ifndef CONFIG_PID_MAX_PER_NAMESPACE extern int pid_max; +#endif static struct ctl_table pid_ns_ctl_table[] = { { .procname = "ns_last_pid", @@ -310,7 +319,11 @@ static struct ctl_table pid_ns_ctl_table[] = { .mode = 0666, /* permissions are checked in the handler */ .proc_handler = pid_ns_ctl_handler, .extra1 = SYSCTL_ZERO, +#ifndef CONFIG_PID_MAX_PER_NAMESPACE .extra2 = &pid_max, +#else + .extra2 = &init_pid_ns.pid_max, +#endif }, { } }; diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 354a2d294f52..e84df0818517 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1809,6 +1809,7 @@ static struct ctl_table kern_table[] = { .proc_handler = proc_dointvec, }, #endif +#ifndef CONFIG_PID_MAX_PER_NAMESPACE { .procname = "pid_max", .data = &pid_max, @@ -1818,6 +1819,7 @@ static struct ctl_table kern_table[] = { .extra1 = &pid_max_min, .extra2 = &pid_max_max, }, +#endif { .procname = "panic_on_oops", .data = &panic_on_oops, diff --git a/kernel/trace/pid_list.c b/kernel/trace/pid_list.c index 95106d02b32d..8056d7441d05 100644 --- a/kernel/trace/pid_list.c +++ b/kernel/trace/pid_list.c @@ -414,7 +414,11 @@ struct trace_pid_list *trace_pid_list_alloc(void) int i; /* According to linux/thread.h, pids can be no bigger that 30 bits */ +#ifndef CONFIG_PID_MAX_PER_NAMESPACE WARN_ON_ONCE(pid_max > (1 << 30)); +#else + WARN_ON_ONCE(task_active_pid_ns(current)->pid_max > (1 << 30)); +#endif pid_list = kzalloc(sizeof(*pid_list), GFP_KERNEL); if (!pid_list) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index b656cab67f67..5afa58302b06 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5423,7 +5423,11 @@ int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled) if (mask == TRACE_ITER_RECORD_TGID) { if (!tgid_map) { +#ifndef CONFIG_PID_MAX_PER_NAMESPACE tgid_map_max = pid_max; +#else + tgid_map_max = init_pid_ns.pid_max; +#endif map = kvcalloc(tgid_map_max + 1, sizeof(*tgid_map), GFP_KERNEL); diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index d608f6128704..52123df262b2 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -695,7 +695,9 @@ extern unsigned long tracing_thresh; /* PID filtering */ +#ifndef CONFIG_PID_MAX_PER_NAMESPACE extern int pid_max; +#endif bool trace_find_filtered_pid(struct trace_pid_list *filtered_pids, pid_t search_pid); -- 2.25.1

2 1

[PATCH openEuler-22.03-LTS] livepatch/core: Disable support for replacing
by Zheng Yejian 10 Jan '24

10 Jan '24

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8ORHJ -------------------------------- Replacing is an optimization for livepatching based on ftrace, the wo_ftrace solution do not support it. Signed-off-by: Zheng Yejian <zhengyejian1(a)huawei.com> --- kernel/livepatch/core.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index 40259a2988e9..cc7e140088df 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -1155,6 +1155,9 @@ static void klp_init_func_early(struct klp_object *obj, kobject_init(&func->kobj, &klp_ktype_func); list_add_tail(&func->node, &obj->func_list); func->func_node = NULL; +#ifdef CONFIG_LIVEPATCH_STOP_MACHINE_CONSISTENCY + func->nop = false; +#endif } static void klp_init_object_early(struct klp_patch *patch, @@ -1165,6 +1168,7 @@ static void klp_init_object_early(struct klp_patch *patch, list_add_tail(&obj->node, &patch->obj_list); #ifdef CONFIG_LIVEPATCH_STOP_MACHINE_CONSISTENCY obj->mod = NULL; + obj->dynamic = false; #endif } @@ -1199,6 +1203,12 @@ static int klp_init_patch(struct klp_patch *patch) if (ret) return ret; +#ifdef CONFIG_LIVEPATCH_STOP_MACHINE_CONSISTENCY + if (patch->replace) { + pr_err("Replacing is not supported\n"); + return -EINVAL; + } +#endif if (patch->replace) { ret = klp_add_nops(patch); if (ret) -- 2.25.1

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