Tao Cui 9296375902 LoongArch: KVM: Fix TOCTOU race on pv_features ...

In kvm_loongarch_cpucfg_set_attr() the check-then-set on
kvm->arch.pv_features is lockless, so two vCPUs can race past the
validation and set different values. Add a spinlock to protect it.

Cc: [email protected]
Reviewed-by: Bibo Mao <[email protected]>
Signed-off-by: Tao Cui <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>

2026-09-04 21:45:13 +08:00

..

vdso

LoongArch: vDSO: Drop custom __arch_vdso_hres_capable()

2026-05-04 09:00:20 +08:00

acenv.h

LoongArch: Align ACPI structures if ARCH_STRICT_ALIGN enabled

2025-09-18 19:44:01 +08:00

acpi.h

LoongArch: Add PIO for early access before ACPI PCI root register

2026-06-25 13:03:47 +08:00

addrspace.h

LoongArch: Adjust memory management for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

alternative-asm.h

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alternative.h

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asm-extable.h

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asm-offsets.h

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asm-prototypes.h

LoongArch: KVM: Compile switch.S directly into the kernel

2026-05-04 09:00:37 +08:00

asm.h

LoongArch: Adjust common macro definitions for 32BIT/64BIT

2025-12-06 10:40:32 +08:00

asmmacro.h

LoongArch: Increase TASK_STRUCT_OFFSET up to 2040 for 32BIT

2026-07-23 22:27:15 +08:00

atomic-amo.h

LoongArch: Add atomic operations for 32BIT/64BIT

2025-12-06 10:40:32 +08:00

atomic-llsc.h

LoongArch: Add atomic operations for 32BIT/64BIT

2025-12-06 10:40:32 +08:00

atomic.h

LoongArch: Add atomic operations for 32BIT/64BIT

2025-12-06 10:40:32 +08:00

barrier.h

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bitops.h

LoongArch: Adjust misc routines for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

bitrev.h

LoongArch: Simplify __arch_bitrev32() implementation

2025-12-06 10:39:39 +08:00

bootinfo.h

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branch.h

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bug.h

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cache.h

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cacheflush.h

LoongArch: Add flush_icache_all()/local_flush_icache_all()

2026-04-22 15:45:12 +08:00

cacheops.h

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checksum.h

LoongArch: Adjust misc routines for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

clocksource.h

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cmpxchg.h

LoongArch: Only use SC.Q when supported by the assembler

2026-03-16 10:36:00 +08:00

cpu-features.h

LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR

2026-04-22 15:45:13 +08:00

cpu-info.h

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cpu.h

LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR

2026-04-22 15:45:13 +08:00

cpufeature.h

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crash_reserve.h

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current.h

LoongArch: Add THREAD_INFO_IN_TASK implementation

2026-06-25 13:03:47 +08:00

delay.h

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dma.h

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dmi.h

LoongArch: Adjust boot & setup for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

efi.h

efi/loongarch: Randomize kernel preferred address for KASLR

2026-05-21 20:58:36 +08:00

elf.h

LoongArch: Adjust process management for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

entry-common.h

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exception.h

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exec.h

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extable.h

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fixmap.h

LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support

2026-04-22 15:44:54 +08:00

fpregdef.h

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fprobe.h

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fpu.h

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ftrace.h

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futex.h

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gpr-num.h

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hardirq.h

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highmem.h

LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support

2026-04-22 15:44:54 +08:00

hugetlb.h

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hw_breakpoint.h

LoongArch: Use correct accessor to read FWPC/MWPC

2025-11-10 08:37:06 +08:00

hw_irq.h

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idle.h

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image.h

LoongArch: Add EFI binary support for kexec_file

2025-10-02 22:39:07 +08:00

inst.h

LoongArch: BPF: Resolve per-CPU addrs for internal-only MOV

2026-08-17 22:07:40 +08:00

io.h

LoongArch: Consolidate early_ioremap()/ioremap_prot()

2025-11-10 08:37:06 +08:00

irq_regs.h

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irq_work.h

LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist

2026-04-22 15:45:12 +08:00

irq.h

genirq/matrix, LoongArch: Delete IRQ_MATRIX_BITS leftovers

2026-03-17 10:57:03 +01:00

irqflags.h

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jump_label.h

LoongArch: Batch the icache maintenance for jump_label

2026-04-22 15:45:13 +08:00

kasan.h

kasan: introduce ARCH_DEFER_KASAN and unify static key across modes

2025-09-21 14:21:58 -07:00

Kbuild

ring-buffer: Flush and stop persistent ring buffer on panic

2026-05-21 08:20:58 -04:00

kdebug.h

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kexec.h

LoongArch: Move struct kimage forward declaration before use

2026-06-25 13:03:49 +08:00

kfence.h

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kgdb.h

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kprobes.h

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kvm_csr.h

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kvm_dmsintc.h

LoongArch: KVM: Add unregister helpers for the KVM interrupt devices

2026-09-04 21:44:53 +08:00

kvm_eiointc.h

LoongArch: KVM: Add unregister helpers for the KVM interrupt devices

2026-09-04 21:44:53 +08:00

kvm_host.h

LoongArch: KVM: Fix TOCTOU race on pv_features

2026-09-04 21:45:13 +08:00

kvm_ipi.h

LoongArch: KVM: Add unregister helpers for the KVM interrupt devices

2026-09-04 21:44:53 +08:00

kvm_mmu.h

LoongArch: KVM: Fix VM migration failure with PTW enabled

2025-09-18 19:44:22 +08:00

kvm_para.h

LoongArch: KVM: Add paravirt preempt feature in hypervisor side

2026-02-06 09:28:01 +08:00

kvm_pch_pic.h

LoongArch: KVM: Add unregister helpers for the KVM interrupt devices

2026-09-04 21:44:53 +08:00

kvm_types.h

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kvm_vcpu.h

LoongArch: KVM: Use existing macro about interrupt bit mask

2026-06-11 20:46:40 +08:00

lbt.h

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linkage.h

LoongArch: Fix SYM_SIGFUNC_START definition for 32BIT

2026-05-04 09:00:01 +08:00

local.h

LoongArch: Add atomic operations for 32BIT/64BIT

2025-12-06 10:40:32 +08:00

loongarch.h

LoongArch: KVM: Handle LOONGARCH_CSR_IPR during vCPU context switch

2026-02-06 09:27:46 +08:00

loongson.h

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mmu_context.h

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mmu.h

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module.h

LoongArch: Adjust module loader for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

module.lds.h

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numa.h

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orc_header.h

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orc_lookup.h

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orc_types.h

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page.h

Merge tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

2026-04-24 09:54:45 -07:00

paravirt.h

LoongArch: KVM: Move some variable declarations to paravirt.h

2026-05-22 15:05:12 +08:00

pci.h

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percpu.h

LoongArch: Add THREAD_INFO_IN_TASK implementation

2026-06-25 13:03:47 +08:00

perf_event.h

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pgalloc.h

LoongArch: mm: enable MMU_GATHER_RCU_TABLE_FREE

2026-02-06 15:47:18 -08:00

pgtable-bits.h

LoongArch: Adjust memory management for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

pgtable.h

Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-08-20 18:17:08 -07:00

prefetch.h

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processor.h

LoongArch: Align FPU register state to 32 bytes

2026-04-22 15:45:11 +08:00

ptrace.h

LoongArch: Use current_stack_pointer in current_pt_regs()

2026-08-17 22:07:14 +08:00

qspinlock.h

LoongArch: KVM: Move some variable declarations to paravirt.h

2026-05-22 15:05:12 +08:00

regdef.h

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seccomp.h

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serial.h

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set_memory.h

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setup.h

LoongArch: Handle percpu handler address for ORC unwinder

2026-02-10 19:31:13 +08:00

sigframe.h

LoongArch: vDSO: Emit GNU_EH_FRAME correctly

2026-03-26 14:29:09 +08:00

smp.h

LoongArch: Add THREAD_INFO_IN_TASK implementation

2026-06-25 13:03:47 +08:00

sparsemem.h

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spinlock_types.h

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spinlock.h

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stackframe.h

LoongArch: Add THREAD_INFO_IN_TASK implementation

2026-06-25 13:03:47 +08:00

stackprotector.h

LoongArch: Use get_random_canary() for stack canary init

2026-04-22 15:45:12 +08:00

stacktrace.h

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string.h

LoongArch: Adjust misc routines for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

suspend.h

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switch_to.h

LoongArch: Add THREAD_INFO_IN_TASK implementation

2026-06-25 13:03:47 +08:00

syscall.h

syscall_user_dispatch: Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH

2026-07-14 16:34:07 +02:00

thread_info.h

LoongArch: Add THREAD_INFO_IN_TASK implementation

2026-06-25 13:03:47 +08:00

time.h

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timex.h

LoongArch: Adjust time routines for 32BIT/64BIT

2025-12-08 18:09:17 +08:00

tlb.h

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tlbflush.h

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topology.h

LoongArch: Make cpumask_of_node() robust against NUMA_NO_NODE

2026-02-10 19:31:12 +08:00

types.h

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uaccess.h

uaccess: unify inline vs outline copy_{from,to}_user() selection

2026-05-28 21:24:44 -07:00

unistd.h

LoongArch: Wire up memfd_secret system call

2026-02-10 19:31:12 +08:00

unwind_hints.h

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unwind.h

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uprobes.h

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vdso.h

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vermagic.h

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video.h

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vmalloc.h

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