Catalin Marinas 534eb6940a arm64: Avoid eager DVMSync reclaim batches with C1-Pro SME erratum ...

The C1-Pro SME DVMSync workaround currently samples mm_cpumask() from
arch_tlbbatch_add_pending(). It requires a DSB after every batched TLBI
so that the mask read is ordered after the hardware DVMSync, defeating
much of the reclaim batching benefit.

Introduce the sme_active_cpus mask tracking which CPUs run in user-space
with SME enabled and use it for batch flushing instead of accumulating
the mm_cpumask() of the unmapped pages.

Fixes: 0baba94a97 ("arm64: errata: Work around early CME DVMSync acknowledgement")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Tested-by: Joshua Liu <josliu@google.com>
Signed-off-by: Will Deacon <will@kernel.org>

2026-06-29 12:00:37 +01:00

..

pi

Merge tag 'arm64-upstream' of gitolite.kernel.org:pub/scm/linux/kernel/git/arm64/linux

2026-06-16 05:18:04 +05:30

probes

Merge tag 'perf-core-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2026-02-10 12:00:46 -08:00

vdso

stackleak: Split KSTACK_ERASE_CFLAGS from GCC_PLUGINS_CFLAGS

2025-07-21 21:40:57 -07:00

vdso32

kbuild: Consolidate C dialect options

2026-03-12 12:52:37 +01:00

.gitignore

…

acpi_numa.c

arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

2024-08-14 17:51:39 +01:00

acpi_parking_protocol.c

arm64: smp: Remove dedicated wakeup IPI

2023-09-25 17:15:28 +01:00

acpi.c

cpu/hotplug: Fix NULL kobject warning in cpuhp_smt_enable()

2026-06-29 11:47:36 +01:00

alternative.c

arm64: Reject modules with internal alternative callbacks

2025-11-07 15:00:14 +00:00

armv8_deprecated.c

arm64: armv8_deprecated: Disable swp emulation when FEAT_LSUI present

2026-03-27 17:29:10 +00:00

asm-offsets.c

arch: Add the macro COMPILE_OFFSETS to all the asm-offsets.c

2025-09-25 09:57:15 +02:00

cacheinfo.c

arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array

2025-02-07 09:57:56 +00:00

compat_alignment.c

arm64: Don't call NULL in do_compat_alignment_fixup()

2025-04-01 14:13:11 +01:00

cpu_errata.c

arm64: errata: Mitigate TLBI errata on Microsoft Azure Cobalt 100 CPU

2026-06-10 12:00:21 +01:00

cpu_ops.c

…

cpu-reset.S

arm64: kernel: remove SHF_WRITE|SHF_EXECINSTR from .idmap.text

2023-05-02 12:42:22 +01:00

cpufeature.c

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2026-06-19 08:56:49 -07:00

cpuinfo.c

arm64/cpufeature: Define hwcaps for 2025 dpISA features

2026-05-19 13:57:51 +01:00

crash_dump.c

…

debug-monitors.c

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2025-09-29 18:48:39 -07:00

efi-header.S

include: pe.h: Fix PE definitions

2025-05-21 16:46:37 +02:00

efi-rt-wrapper.S

arm64: efi: Avoid workqueue to check whether EFI runtime is live

2023-01-16 15:27:31 +01:00

efi.c

arm64/mm: Rename ptdesc_t

2026-06-05 11:44:36 +01:00

elfcore.c

fs: avoid mmap sem relocks when coredumping with many missing pages

2025-02-21 10:25:32 +01:00

entry-common.c

Merge tag 'arm64-upstream' of gitolite.kernel.org:pub/scm/linux/kernel/git/arm64/linux

2026-06-16 05:18:04 +05:30

entry-ftrace.S

arm64: Fix double word in comments

2025-11-12 17:07:59 +00:00

entry.S

Merge branches 'for-next/misc', 'for-next/tlbflush', 'for-next/ttbr-macros-cleanup', 'for-next/kselftest', 'for-next/feat_lsui', 'for-next/mpam', 'for-next/hotplug-batched-tlbi', 'for-next/bbml2-fixes', 'for-next/sysreg', 'for-next/generic-entry' and 'for-next/acpi', remote-tracking branches 'arm64/for-next/perf' and 'arm64/for-next/read-once' into for-next/core

2026-04-10 14:22:24 +01:00

fpsimd.c

arm64: Avoid eager DVMSync reclaim batches with C1-Pro SME erratum

2026-06-29 12:00:37 +01:00

ftrace.c

arm64: Fix typos and spelling errors in comments

2025-11-12 17:06:21 +00:00

head.S

KVM: arm64: Trap MTE access and discovery when MTE is disabled

2026-01-23 11:28:48 +00:00

hibernate-asm.S

…

hibernate.c

arm64: Set __nocfi on swsusp_arch_resume()

2026-01-23 18:13:07 +00:00

hw_breakpoint.c

arm64/hw_breakpoint: reject unaligned watchpoints that would truncate BAS

2026-06-19 17:04:57 +01:00

hyp-stub.S

KVM: arm64: Don't populate TPIDR_EL2 in finalise_el2()

2026-05-27 15:30:39 +01:00

idle.c

arm64: idle: Tag the arm64 idle functions as __cpuidle

2023-09-25 17:15:28 +01:00

image-vars.h

KVM: arm64: Add event support to the nVHE/pKVM hyp and trace remote

2026-03-11 08:51:17 +00:00

image.h

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io.c

arm64: Use new fallback IO memcpy/memset

2024-10-28 21:44:29 +00:00

irq.c

arm64: panic from init_IRQ if IRQ handler stacks cannot be allocated

2026-05-19 12:27:10 +01:00

jump_label.c

asm-generic: introduce text-patching.h

2024-11-07 14:25:15 -08:00

kaslr.c

arm64/mm: Remove randomization of the linear map

2025-04-29 13:21:49 +01:00

kexec_image.c

arm64: kernel: initialize missing kexec_buf->random field

2026-01-05 21:27:43 +00:00

kgdb.c

arm64: debug: call step handlers statically

2025-07-08 13:27:41 +01:00

kuser32.S

arm64: Update Documentation/arm references

2023-06-12 06:33:48 -06:00

machine_kexec_file.c

arm64,ppc64le/kdump: pass dm-crypt keys to kdump kernel

2026-04-02 23:36:24 -07:00

machine_kexec.c

arm64: kexec: Remove duplicate allocation for trans_pgd

2026-04-08 17:49:08 +01:00

Makefile

arm64: fpsimd: Move SME save/restore inline

2026-06-03 16:50:49 +01:00

Makefile.syscalls

syscalls: fix syscall macros for newfstat/newfstatat

2024-08-02 15:20:47 +02:00

module-plts.c

arm64: ftrace: fix unreachable PLT for ftrace_caller in init_module with CONFIG_DYNAMIC_FTRACE

2025-09-05 16:56:20 +01:00

module.c

arm64: Reject modules with internal alternative callbacks

2025-11-07 15:00:14 +00:00

mpam.c

arm64: mpam: Initialise and context switch the MPAMSM_EL1 register

2026-03-27 15:29:02 +00:00

mte.c

exec_state: relocate dumpable information

2026-05-26 11:02:01 +02:00

paravirt.c

arm64/paravirt: Use common code for paravirt_steal_clock()

2026-01-12 16:30:00 +01:00

patching.c

arm64: patching: replace min_t with min in __text_poke

2026-06-03 21:15:24 +01:00

pci.c

arm64: PCI: Migrate ACPI related functions to pci-acpi.c

2024-08-27 15:48:34 +02:00

perf_callchain.c

perf/core: Correct perf sampling with guest VMs

2024-11-14 10:40:01 +01:00

perf_regs.c

perf: arm64: Add SVE vector granule register to user regs

2022-09-22 15:06:02 +01:00

pointer_auth.c

…

process.c

arm64: Avoid eager DVMSync reclaim batches with C1-Pro SME erratum

2026-06-29 12:00:37 +01:00

proton-pack.c

arm64: proton-pack: use sysfs_emit in sysfs show functions

2026-05-19 12:16:12 +01:00

psci.c

arm64: psci: Ignore DENIED CPUs

2024-06-28 18:38:31 +01:00

ptrace.c

arm64/fpsimd: ptrace: zero target's fpsimd_state, not the tracer's

2026-05-06 12:11:49 +01:00

reloc_test_core.c

ARM64: reloc_test: add missing MODULE_DESCRIPTION() macro

2024-06-13 10:23:54 +01:00

reloc_test_syms.S

…

relocate_kernel.S

arm64: Provide dcache_by_myline_op_nosync helper

2026-03-13 23:46:32 +01:00

return_address.c

…

rsi.c

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2026-04-14 16:48:56 -07:00

sdei.c

Merge branches 'for-next/misc', 'for-next/kselftest', 'for-next/efi-preempt', 'for-next/assembler-macro', 'for-next/typos', 'for-next/sme-ptrace-disable', 'for-next/local-tlbi-page-reused', 'for-next/mpam', 'for-next/acpi' and 'for-next/documentation', remote-tracking branch 'arm64/for-next/perf' into for-next/core

2025-11-28 15:47:12 +00:00

setup.c

arm64: map [_text, _stext) virtual address range non-executable+read-only

2025-09-22 11:58:17 +01:00

signal32.c

arm64/fpsimd: signal32: Always save+flush state early

2025-04-09 18:06:31 +01:00

signal.c

arm64: signal: Preserve POR_EL0 if poe_context is missing

2026-05-01 17:44:25 +01:00

sigreturn32.S

arm64: rework compat syscall macros

2024-07-10 14:23:38 +02:00

sleep.S

arm64: mm: Handle LVA support as a CPU feature

2024-02-16 12:42:36 +00:00

smccc-call.S

arm64: smccc: Remove broken support for SMCCCv1.3 SVE discard hint

2024-11-07 11:18:52 +00:00

smp_spin_table.c

treewide: Drop function_nocfi

2022-09-26 10:13:14 -07:00

smp.c

cpu/hotplug: Fix NULL kobject warning in cpuhp_smt_enable()

2026-06-29 11:47:36 +01:00

stacktrace.c

Merge branches 'for-next/livepatch', 'for-next/user-contig-bbml2', 'for-next/misc', 'for-next/acpi', 'for-next/debug-entry', 'for-next/feat_mte_tagged_far', 'for-next/kselftest', 'for-next/mdscr-cleanup' and 'for-next/vmap-stack', remote-tracking branch 'arm64/for-next/perf' into for-next/core

2025-07-24 16:01:22 +01:00

static_call.c

arm64: static_call: include asm/insns.h

2026-06-19 15:27:33 +01:00

suspend.c

arm64/sme: Restore SME registers on exit from suspend

2024-02-20 12:19:15 +00:00

sys32.c

fs: fix archiecture-specific compat_ftruncate64

2026-03-23 12:41:57 +01:00

sys_compat.c

Merge branch 'for-next/c1-pro-erratum-4193714' into for-next/core

2026-04-20 13:12:35 +01:00

sys.c

arm64: generate 64-bit syscall.tbl

2024-07-10 14:23:38 +02:00

syscall.c

randomize_kstack: Unify random source across arches

2026-03-24 21:12:03 -07:00

time.c

…

topology.c

arm64: topology: Fix false warning in counters_read_on_cpu() for same-CPU reads

2026-02-26 18:27:15 +00:00

trace-events-emulation.h

tracing/treewide: Remove second parameter of __assign_str()

2024-05-22 20:14:47 -04:00

traps.c

arm64: Fix typos and spelling errors in comments

2025-11-12 17:06:21 +00:00

vdso32-wrap.S

…

vdso-wrap.S

…

vdso.c

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-21 20:03:00 -08:00

vmcore_info.c

arm64/sysreg: Replace TCR_EL1 field macros

2025-11-13 15:58:30 +00:00

vmlinux.lds.S

Merge tag 'arm64-upstream' of gitolite.kernel.org:pub/scm/linux/kernel/git/arm64/linux

2026-06-16 05:18:04 +05:30

watchdog_hld.c

arm64/watchdog_hld: Add a cpufreq notifier for update watchdog thresh

2025-07-04 13:17:30 +01:00