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e0cce122514ff76c3c986103c94de68fbb401949
linux/arch/arm64/include/asm
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Marc Zyngier 47053904e1 KVM: arm64: timers: Convert per-vcpu virtual offset to a global value 
Having a per-vcpu virtual offset is a pain. It needs to be synchronized
on each update, and expands badly to a setup where different timers can
have different offsets, or have composite offsets (as with NV).

So let's start by replacing the use of the CNTVOFF_EL2 shadow register
(which we want to reclaim for NV anyway), and make the virtual timer
carry a pointer to a VM-wide offset.

This simplifies the code significantly. It also addresses two terrible bugs:

- The use of CNTVOFF_EL2 leads to some nice offset corruption
  when the sysreg gets reset, as reported by Joey.

- The kvm mutex is taken from a vcpu ioctl, which goes against
  the locking rules...

Reported-by: Joey Gouly <joey.gouly@arm.com>
Reviewed-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230224173915.GA17407@e124191.cambridge.arm.com
Tested-by: Joey Gouly <joey.gouly@arm.com>
Link: https://lore.kernel.org/r/20230224191640.3396734-1-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2023-03-11 02:00:40 -08:00
..
stacktrace
arm64: stacktrace: track hyp stacks in unwinder's address space
2022-09-09 12:30:08 +01:00
vdso
arm64: vdso: use SYS_CNTVCTSS_EL0 for gettimeofday
2022-09-09 12:27:25 +01:00
xen
arm/xen: Introduce xen_setup_dma_ops()
2022-06-06 08:54:33 +02:00
acenv.h
…
acpi.h
Revert "ACPI: Add memory semantics to acpi_os_map_memory()"
2021-09-23 20:39:36 +02:00
alternative-macros.h
arm64: alternative: constify alternative_has_feature_* argument
2022-11-07 15:59:14 +00:00
alternative.h
arm64: alternatives: Split up alternative.h
2020-11-09 21:49:34 +00:00
apple_m1_pmu.h
drivers/perf: Add Apple icestorm/firestorm CPU PMU driver
2022-03-08 13:32:48 +00:00
arch_gicv3.h
arm64: add ARM64_HAS_GIC_PRIO_RELAXED_SYNC cpucap
2023-01-31 16:06:17 +00:00
arch_timer.h
arm64: Add CNT{P,V}CTSS_EL0 alternatives to cnt{p,v}ct_el0
2021-10-19 10:56:20 +01:00
archrandom.h
random: remove early archrandom abstraction
2022-11-18 02:18:10 +01:00
arm_dsu_pmu.h
…
arm-cci.h
…
asm_pointer_auth.h
arm64/sysreg: Add _EL1 into ID_AA64ISAR2_EL1 definition names
2022-07-05 11:45:46 +01:00
asm-bug.h
bug: Use normal relative pointers in 'struct bug_entry'
2022-05-19 23:46:10 +02:00
asm-extable.h
arm64: extable: cleanup redundant extable type EX_TYPE_FIXUP
2022-06-28 12:11:47 +01:00
asm-offsets.h
…
asm-prototypes.h
kasan: arm64: support specialized outlined tag mismatch checks
2021-05-26 23:31:26 +01:00
asm-uaccess.h
arm64: extable: make uaaccess helper use extable type EX_TYPE_UACCESS_ERR_ZERO
2022-06-28 12:11:47 +01:00
assembler.h
Merge branch 'for-next/trivial' into for-next/core
2022-12-06 11:33:29 +00:00
atomic_ll_sc.h
arm64: cmpxchg_double*: hazard against entire exchange variable
2023-01-05 15:28:15 +00:00
atomic_lse.h
arm64: cmpxchg_double*: hazard against entire exchange variable
2023-01-05 15:28:15 +00:00
atomic.h
locking/atomic: make ARCH_ATOMIC a Kconfig symbol
2021-05-26 13:20:49 +02:00
barrier.h
arm64: add ARM64_HAS_GIC_PRIO_RELAXED_SYNC cpucap
2023-01-31 16:06:17 +00:00
bitops.h
include: move find.h from asm_generic to linux
2022-01-15 08:47:31 -08:00
bitrev.h
…
boot.h
arm64: get rid of TEXT_OFFSET
2020-09-07 15:00:52 +01:00
brk-imm.h
arm64: Support Clang UBSAN trap codes for better reporting
2023-02-08 15:26:58 -08:00
bug.h
…
cache.h
KVM: arm64: Normalize cache configuration
2023-01-21 18:09:23 +00:00
cacheflush.h
arm64: mm: Remove assembly DMA cache maintenance wrappers
2022-07-05 13:06:31 +01:00
checksum.h
arm64: csum: cast to the proper type
2021-03-15 10:57:21 +00:00
clocksource.h
arm64: Introduce asm/vdso/clocksource.h
2020-03-21 15:23:55 +01:00
cmpxchg.h
arm64: atomics: lse: Dereference matching size
2022-01-20 09:13:48 +00:00
compat.h
asm-generic: compat: Cleanup duplicate definitions
2022-04-26 13:35:54 -07:00
compiler.h
cfi: Use __builtin_function_start
2022-04-13 12:16:00 -07:00
cpu_ops.h
arm64: cpuidle: remove generic cpuidle support
2022-06-23 14:19:33 +01:00
cpu.h
arm64/sme: Expose SMIDR through sysfs
2022-06-23 18:22:44 +01:00
cpufeature.h
Merge branches 'for-next/sysreg', 'for-next/sme', 'for-next/kselftest', 'for-next/misc', 'for-next/sme2', 'for-next/tpidr2', 'for-next/scs', 'for-next/compat-hwcap', 'for-next/ftrace', 'for-next/efi-boot-mmu-on', 'for-next/ptrauth' and 'for-next/pseudo-nmi', remote-tracking branch 'arm64/for-next/perf' into for-next/core
2023-02-10 18:51:49 +00:00
cpuidle.h
arm64: cpuidle: remove generic cpuidle support
2022-06-23 14:19:33 +01:00
cputype.h
KVM: arm64: vgic: Add Apple M2 cpus to the list of broken SEIS implementations
2023-01-05 15:25:19 +00:00
current.h
…
daifflags.h
arm64: entry: always set GIC_PRIO_PSR_I_SET during entry
2021-05-05 18:13:58 +01:00
dcc.h
…
debug-monitors.h
arm64: Treat ESR_ELx as a 64-bit register
2022-04-29 19:26:27 +01:00
device.h
arm64: Remove dev->archdata.iommu pointer
2020-06-30 11:59:49 +02:00
dmi.h
…
efi.h
Merge tag 'efi-next-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
2023-02-23 14:41:48 -08:00
el2_setup.h
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2023-02-25 11:30:21 -08:00
elf.h
arm64: exec: Adjust affinity for compat tasks with mismatched 32-bit EL0
2021-08-20 12:33:06 +02:00
esr.h
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2023-02-21 15:27:48 -08:00
exception.h
arm64: split EL0/EL1 UNDEF handlers
2022-11-15 13:46:17 +00:00
exec.h
arm64: uaccess: remove set_fs()
2020-12-02 19:49:11 +00:00
extable.h
arm64/bpf: Remove 128MB limit for BPF JIT programs
2021-11-08 22:16:26 +01:00
fb.h
…
fixmap.h
arm64: entry: simplify trampoline data page
2022-06-24 13:08:30 +01:00
fpsimd.h
arm64/sme: Implement signal handling for ZT
2023-01-20 12:23:06 +00:00
fpsimdmacros.h
arm64/sme: Manually encode ZT0 load and store instructions
2023-01-20 12:23:06 +00:00
ftrace.h
arm64: Implement HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS
2023-01-24 11:49:43 +00:00
futex.h
arm64: extable: add a dedicated uaccess handler
2021-10-21 10:45:22 +01:00
gpr-num.h
arm64: gpr-num: support W registers
2021-10-21 10:45:22 +01:00
hardirq.h
arm64: irqstat: Get rid of duplicated declaration
2020-11-23 10:31:05 +01:00
hugetlb.h
arm64: errata: Workaround possible Cortex-A715 [ESR|FAR]_ELx corruption
2023-01-06 17:14:55 +00:00
hw_breakpoint.h
arm64/sysreg: Add _EL1 into ID_AA64DFR0_EL1 definition names
2022-09-16 12:38:57 +01:00
hwcap.h
Merge branches 'for-next/sysreg', 'for-next/sme', 'for-next/kselftest', 'for-next/misc', 'for-next/sme2', 'for-next/tpidr2', 'for-next/scs', 'for-next/compat-hwcap', 'for-next/ftrace', 'for-next/efi-boot-mmu-on', 'for-next/ptrauth' and 'for-next/pseudo-nmi', remote-tracking branch 'arm64/for-next/perf' into for-next/core
2023-02-10 18:51:49 +00:00
hyp_image.h
KVM: arm64: Allow using kvm_nvhe_sym() in hyp code
2021-03-19 12:01:20 +00:00
hyperv-tlfs.h
PCI: hv: Add arm64 Hyper-V vPCI support
2022-01-12 08:24:29 -06:00
hypervisor.h
arm/arm64: Probe for the presence of KVM hypervisor
2021-03-31 09:16:55 +01:00
image.h
…
insn-def.h
arm64: move AARCH64_BREAK_FAULT into insn-def.h
2022-02-22 21:25:48 +00:00
insn.h
arm64: insn: Add helpers for BTI
2023-01-24 11:49:43 +00:00
io.h
Merge tag 'asm-generic-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
2022-08-05 10:07:23 -07:00
irq_work.h
arm64: smp: Add missing prototype for some smp.c functions
2021-03-29 10:41:42 +01:00
irq.h
arm64: irq: allow FIQs to be handled
2021-03-24 20:19:30 +00:00
irqflags.h
arm64: irqflags: use alternative branches for pseudo-NMI logic
2023-01-31 16:06:17 +00:00
jump_label.h
arm64: jump_label: mark arguments as const to satisfy asm constraints
2022-11-07 15:59:14 +00:00
kasan.h
arm64: kasan: simplify and inline MTE functions
2021-02-26 09:41:03 -08:00
Kbuild
arm64/sysreg: Enable automatic generation of system register definitions
2022-05-04 15:30:28 +01:00
kernel-pgtable.h
arm64/mm: Drop ARM64_KERNEL_USES_PMD_MAPS
2022-11-08 13:59:36 +00:00
kexec.h
kexec: drop weak attribute from functions
2022-07-15 12:21:16 -04:00
kfence.h
set_memory: allow querying whether set_direct_map_*() is actually enabled
2021-07-08 11:48:20 -07:00
kgdb.h
…
kprobes.h
kprobes: treewide: Make it harder to refer kretprobe_trampoline directly
2021-09-30 21:24:06 -04:00
kvm_arm.h
Merge branch kvm-arm64/nv-prefix into kvmarm/next
2023-02-13 23:33:41 +00:00
kvm_asm.h
KVM: arm64: Unmap 'kvm_arm_hyp_percpu_base' from the host
2022-11-11 17:19:35 +00:00
kvm_emulate.h
Merge branch kvm-arm64/nv-prefix into kvmarm/next
2023-02-13 23:33:41 +00:00
kvm_host.h
KVM: arm64: timers: Convert per-vcpu virtual offset to a global value
2023-03-11 02:00:40 -08:00
kvm_hyp.h
KVM: arm64: Provide sanitized SYS_ID_AA64SMFR0_EL1 to nVHE
2023-02-02 21:46:43 +00:00
kvm_mmu.h
Merge branch kvm-arm64/nv-prefix into kvmarm/next
2023-02-13 23:33:41 +00:00
kvm_mte.h
KVM: arm64: Save/restore MTE registers
2021-06-22 14:08:05 +01:00
kvm_nested.h
KVM: arm64: nv: Filter out unsupported features from ID regs
2023-02-11 10:13:30 +00:00
kvm_pgtable.h
KVM: arm64: Ignore EAGAIN for walks outside of a fault
2023-01-12 21:09:20 +00:00
kvm_pkvm.h
KVM: arm64: Instantiate pKVM hypervisor VM and vCPU structures from EL1
2022-11-11 17:16:24 +00:00
kvm_ptrauth.h
KVM: arm64: Update context references from host to hyp
2020-09-15 18:39:02 +01:00
kvm_ras.h
KVM: arm64: Treat ESR_EL2 as a 64-bit register
2022-04-29 19:26:27 +01:00
kvm_types.h
KVM: arm64: Use common KVM implementation of MMU memory caches
2020-07-09 13:29:43 -04:00
linkage.h
arm64: Extend support for CONFIG_FUNCTION_ALIGNMENT
2023-01-24 11:49:43 +00:00
lse.h
arm64: atomics: lse: remove stale dependency on JUMP_LABEL
2022-11-14 14:44:14 +00:00
memory.h
arm64: kaslr: don't pretend KASLR is enabled if offset < MIN_KIMG_ALIGN
2023-02-28 11:21:04 +00:00
mman.h
arm64/mm: enable ARCH_HAS_VM_GET_PAGE_PROT
2022-04-28 23:16:13 -07:00
mmu_context.h
arm64/kpti: Move DAIF masking to C code
2022-11-25 12:17:52 +00:00
mmu.h
arm64: Add missing include of asm/cpufeature.h to asm/mmu.h
2021-12-06 08:37:03 +00:00
mmzone.h
…
module.h
Merge branches 'for-next/doc', 'for-next/sve', 'for-next/sysreg', 'for-next/gettimeofday', 'for-next/stacktrace', 'for-next/atomics', 'for-next/el1-exceptions', 'for-next/a510-erratum-2658417', 'for-next/defconfig', 'for-next/tpidr2_el0' and 'for-next/ftrace', remote-tracking branch 'arm64/for-next/perf' into for-next/core
2022-09-30 09:17:57 +01:00
module.lds.h
arm64: unwind: add asynchronous unwind tables to kernel and modules
2022-11-09 18:06:35 +00:00
mshyperv.h
arm64: hyperv: Add Hyper-V hypercall and register access utilities
2021-08-04 16:54:36 +00:00
mte-def.h
arm64: mte: Define the number of bytes for storing the tags in a page
2022-02-15 22:53:29 +00:00
mte-kasan.h
printk: stop including cache.h from printk.h
2022-05-13 07:20:07 -07:00
mte.h
arm64: mte: Lock a page for MTE tag initialisation
2022-11-29 09:26:07 +00:00
neon-intrinsics.h
…
neon.h
…
numa.h
numa: Move numa implementation to common code
2021-01-14 15:08:55 -08:00
page-def.h
arm64/mm: Unify CONT_PTE_SHIFT
2020-09-11 16:33:43 +01:00
page.h
mm: add vma_alloc_zeroed_movable_folio()
2023-02-02 22:33:18 -08:00
paravirt_api_clock.h
sched/headers: Add initial new headers as identity mappings
2022-02-23 10:58:28 +01:00
paravirt.h
x86/paravirt: Switch time pvops functions to use static_call()
2021-03-11 16:17:52 +01:00
patching.h
arm64: patching: Add aarch64_insn_write_literal_u64()
2023-01-24 11:49:43 +00:00
pci.h
asm-generic: Add new pci.h and use it
2022-07-22 17:34:57 -05:00
percpu.h
printk: stop including cache.h from printk.h
2022-05-13 07:20:07 -07:00
perf_event.h
arm64: perf: Consistently make all event numbers as 16-bits
2022-03-08 11:41:03 +00:00
pgalloc.h
arm64: mm: Fix VM_BUG_ON(mm != &init_mm) for trans_pgd
2021-11-16 10:12:57 +00:00
pgtable-hwdef.h
arm64/mm: Simplify and document pte_to_phys() for 52 bit addresses
2022-11-09 18:13:18 +00:00
pgtable-prot.h
arm64/mm: move protection_map[] inside the platform
2022-07-17 17:14:37 -07:00
pgtable-types.h
arm64: add support for folded p4d page tables
2020-06-04 19:06:21 -07:00
pgtable.h
Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2023-02-23 17:09:35 -08:00
pointer_auth.h
arm64: move preemption disablement to prctl handlers
2021-07-28 18:33:49 +01:00
preempt.h
arm64: Support PREEMPT_DYNAMIC
2022-02-19 11:11:09 +01:00
probes.h
arm64/fpsimd: add <asm/insn.h> to <asm/kprobes.h> to fix fpsimd build
2020-11-23 10:59:00 +00:00
proc-fns.h
arm64: mm: convert cpu_do_switch_mm() to C
2020-02-27 14:30:50 +00:00
processor.h
arm64/sme: Rename za_state to sme_state
2023-01-20 12:23:05 +00:00
ptdump.h
ARM: 9255/1: efi/dump UEFI runtime page tables for ARM
2022-11-07 14:19:01 +00:00
ptrace.h
arm64: rename ARM64_HAS_IRQ_PRIO_MASKING to ARM64_HAS_GIC_PRIO_MASKING
2023-01-31 16:06:17 +00:00
pvclock-abi.h
KVM: arm64: Implement PV_TIME_FEATURES call
2019-10-21 19:20:27 +01:00
rwonce.h
arm64: Do not include __READ_ONCE() block in assembly files
2022-03-09 21:56:50 +00:00
scs.h
arm64: Always load shadow stack pointer directly from the task struct
2023-01-20 14:26:18 +00:00
sdei.h
arm64: stacktrace: move SDEI stack helpers to stacktrace code
2022-09-09 12:30:07 +01:00
seccomp.h
arm64: Enable seccomp architecture tracking
2020-11-20 11:16:34 -08:00
sections.h
arm64: entry: Allow the trampoline text to occupy multiple pages
2022-02-15 17:40:28 +00:00
semihost.h
serial: earlycon-arm-semihost: Move smh_putc() variants in respective arch's semihost.h
2023-01-19 14:58:19 +01:00
set_memory.h
set_memory: allow querying whether set_direct_map_*() is actually enabled
2021-07-08 11:48:20 -07:00
setup.h
arm64: fix rodata=full
2022-08-23 11:02:02 +01:00
shmparam.h
…
signal32.h
arm64: remove pointless __KERNEL__ guards
2019-08-05 11:06:33 +01:00
signal.h
arm64: expose FAR_EL1 tag bits in siginfo
2020-11-23 18:17:39 +00:00
simd.h
arm64: replace in_irq() with in_hardirq()
2021-08-20 19:49:38 +01:00
smp_plat.h
arm64: Add missing header <asm/smp.h> in two files
2021-07-12 13:37:34 +01:00
smp.h
arm64: smp: remove stack from secondary_data
2021-05-26 22:45:46 +01:00
sparsemem.h
arm64: Force SPARSEMEM_VMEMMAP as the only memory management model
2021-04-23 14:18:21 +01:00
spectre.h
arm64: factor out EL1 SSBS emulation hook
2022-11-15 13:46:18 +00:00
spinlock_types.h
locking: Allow to include asm/spinlock_types.h from linux/spinlock_types_raw.h
2021-12-07 15:14:12 +01:00
spinlock.h
locking/arch: Move qrwlock.h include after qspinlock.h
2021-02-11 07:59:54 -05:00
stack_pointer.h
…
stackprotector.h
stackprotector: actually use get_random_canary()
2022-11-18 02:18:10 +01:00
stacktrace.h
arm64: efi: Account for the EFI runtime stack in stack unwinder
2023-01-16 15:27:31 +01:00
stage2_pgtable.h
KVM: arm64: Limit stage2_apply_range() batch size to largest block
2022-10-09 02:33:49 +01:00
stat.h
…
string.h
Revert "arm64: Mitigate MTE issues with str{n}cmp()"
2022-03-07 21:57:02 +00:00
suspend.h
arm64: Preserve register x18 when CPU is suspended
2020-05-15 16:35:50 +01:00
sync_bitops.h
…
syscall_wrapper.h
arm64/syscall: Include asm/ptrace.h in syscall_wrapper header.
2022-11-09 09:52:25 +00:00
syscall.h
arch: remove unused function syscall_set_arguments()
2021-09-14 16:06:20 +02:00
sysreg.h
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2023-02-25 11:30:21 -08:00
system_misc.h
arm64: die(): pass 'err' as long
2022-09-16 12:17:03 +01:00
thread_info.h
arm64/sme: Implement SVCR context switching
2022-04-22 18:50:58 +01:00
timex.h
…
tlb.h
arm64: tlb: fix the TTL value of tlb_get_level
2021-06-23 14:52:57 +01:00
tlbflush.h
arm64: mm: Fix TLBI vs ASID rollover
2021-08-06 13:52:03 +01:00
topology.h
arm64, topology: enable use of init_cpu_capacity_cppc()
2022-03-10 20:21:58 +01:00
trans_pgd.h
arm64: trans_pgd: remove trans_pgd_map_page()
2021-10-01 13:31:01 +01:00
traps.h
arm64: armv8_deprecated: rework deprected instruction handling
2022-11-15 13:46:19 +00:00
uaccess.h
arm64: uaccess: simplify uaccess_mask_ptr()
2022-09-23 14:39:20 +01:00
unistd32.h
mm/mempolicy: wire up syscall set_mempolicy_home_node
2022-01-15 16:30:30 +02:00
unistd.h
fs: stat: compat: Add __ARCH_WANT_COMPAT_STAT
2022-04-26 13:35:45 -07:00
uprobes.h
arm64/uprobes: change the uprobe_opcode_t typedef to fix the sparse warning
2023-01-05 15:26:09 +00:00
vdso.h
arm64: alternative: patch alternatives in the vDSO
2022-09-09 12:27:25 +01:00
vectors.h
arm64: fix clang warning about TRAMP_VALIAS
2022-03-18 13:48:28 +00:00
vermagic.h
arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>
2020-04-23 10:50:26 +09:00
virt.h
arm64: Save state of HCR_EL2.E2H before switch to EL1
2022-07-01 15:22:51 +01:00
vmalloc.h
kasan, vmalloc, arm64: mark vmalloc mappings as pgprot_tagged
2022-03-24 19:06:47 -07:00
vmap_stack.h
kasan, arm64: reset pointer tags of vmapped stacks
2022-03-24 19:06:47 -07:00
word-at-a-time.h
arm64: extable: add load_unaligned_zeropad() handler
2021-10-21 10:45:22 +01:00
xor.h
lib/xor: make xor prototypes more friendly to compiler vectorization
2022-02-11 20:39:39 +11:00