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linux-stable/arch/arm64/include/asm
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Ard Biesheuvel c1090bb10d arm64: mm: don't assume struct page is always 64 bytes 
Commit 8c96400d6a simplified the page-to-virt and virt-to-page
conversions, based on the assumption that struct page is always 64
bytes in size, in which case we can use a single signed shift to
perform the conversion (provided that the vmemmap array is placed
appropriately in the kernel VA space)

Unfortunately, this assumption turns out not to hold, and so we need
to revert part of this commit, and go back to an affine transformation.
Given that all the quantities involved are compile time constants,
this should not make any practical difference.

Fixes: 8c96400d6a ("arm64: mm: make vmemmap region a projection of the linear region")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20201110180511.29083-1-ardb@kernel.org
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2020-11-12 08:32:25 +00:00
..
vdso vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter() 2020-08-06 10:57:30 +02:00
xen xen/arm: do not setup the runstate info page if kpti is enabled 2020-10-04 18:41:33 -05:00
acenv.h
acpi.h arm64/acpi: disallow AML memory opregions to access kernel memory 2020-07-14 18:02:03 +01:00
alternative.h arm64/alternatives: move length validation inside the subsection 2020-07-30 16:50:14 +01:00
arch_gicv3.h irqchip/gic-v3: Support pseudo-NMIs when SCR_EL3.FIQ == 0 2020-09-13 17:52:04 +01:00
arch_timer.h arm64: arch_timer: Allow an workaround descriptor to disable compat vdso 2020-07-08 21:57:51 +01:00
archrandom.h arm64: random: Remove no longer needed prototypes 2020-10-07 14:17:20 +01:00
arm-cci.h
arm_dsu_pmu.h
asm-bug.h
asm-offsets.h
asm-prototypes.h
asm-uaccess.h arm64 updates for 5.5: 2019-11-25 15:39:19 -08:00
asm_pointer_auth.h arm64: simplify ptrauth initialization 2020-04-28 11:23:21 +01:00
assembler.h kvm: arm64: Remove hyp_adr/ldr_this_cpu 2020-09-30 08:37:07 +01:00
atomic.h locking/atomic: Move ATOMIC_INIT into linux/types.h 2020-07-29 16:14:18 +02:00
atomic_ll_sc.h arm64: Move the LSE gas support detection to Kconfig 2020-01-15 12:50:48 +00:00
atomic_lse.h arm64: lse: fix LSE atomics with LLVM's integrated assembler 2020-01-16 17:25:10 +00:00
barrier.h iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer 2020-09-28 22:57:43 +01:00
bitops.h
bitrev.h
boot.h arm64: get rid of TEXT_OFFSET 2020-09-07 15:00:52 +01:00
brk-imm.h arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line 2020-11-03 14:03:38 +00:00
bug.h
cache.h arm64: avoid -Woverride-init warning 2020-10-28 13:38:36 +00:00
cacheflush.h arm64: use asm-generic/cacheflush.h 2020-06-08 11:05:57 -07:00
checksum.h arm64: csum: Fix handling of bad packets 2020-07-30 17:01:38 +01:00
clocksource.h arm64: Introduce asm/vdso/clocksource.h 2020-03-21 15:23:55 +01:00
cmpxchg.h arm64: fix unreachable code issue with cmpxchg 2019-09-17 12:11:50 +01:00
compat.h compat: lift compat_s64 and compat_u64 to <asm-generic/compat.h> 2020-09-17 13:00:46 -04:00
compiler.h arm64: use a common .arch preamble for inline assembly 2020-08-28 11:15:15 +01:00
cpu.h Revert "arm64: initialize per-cpu offsets earlier" 2020-10-09 11:24:17 +01:00
cpu_ops.h arm64: fix some spelling mistakes in the comments by codespell 2020-09-07 14:18:50 +01:00
cpucaps.h arm64: Add workaround for Arm Cortex-A77 erratum 1508412 2020-10-29 12:56:01 +00:00
cpufeature.h KVM/arm64 fixes for 5.10, take #1 2020-10-30 13:25:09 -04:00
cpuidle.h
cputype.h arm64: Add part number for Arm Cortex-A77 2020-10-29 12:56:01 +00:00
current.h
daifflags.h arm64: acpi: fix DAIF manipulation with pNMI 2020-01-22 14:41:22 +00:00
dcc.h
debug-monitors.h arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line 2020-11-03 14:03:38 +00:00
device.h arm64: Remove dev->archdata.iommu pointer 2020-06-30 11:59:49 +02:00
dmi.h
efi.h efi/libstub: arm32: Base FDT and initrd placement on image address 2020-09-16 18:53:42 +03:00
elf.h Split the old READ_IMPLIES_EXEC workaround from executable PT_GNU_STACK 2020-06-05 13:45:21 -07:00
esr.h arm64: ptrauth: Introduce Armv8.3 pointer authentication enhancements 2020-09-14 12:07:02 +01:00
exception.h arm64: ptrauth: Introduce Armv8.3 pointer authentication enhancements 2020-09-14 12:07:02 +01:00
exec.h
extable.h arm64: Improve diagnostics when trapping BRK with FAULT_BRK_IMM 2020-09-18 16:35:54 +01:00
fb.h
fixmap.h arm64/fixmap: make notes of fixed_addresses more precisely 2020-08-08 19:25:04 +01:00
fpsimd.h arm64/sve: Implement a helper to load SVE registers from FPSIMD state 2020-09-21 18:06:33 +01:00
fpsimdmacros.h arm64/sve: Implement a helper to flush SVE registers 2020-09-21 18:06:33 +01:00
ftrace.h arm64: implement ftrace with regs 2019-11-06 14:17:35 +00:00
futex.h futex: arch_futex_atomic_op_inuser() calling conventions change 2020-03-27 23:58:51 -04:00
hardirq.h arm64: Remove custom IRQ stat accounting 2020-09-17 16:37:28 +01:00
hugetlb.h arm64/hugetlb: Reserve CMA areas for gigantic pages on 16K and 64K configs 2020-07-15 13:38:03 +01:00
hw_breakpoint.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
hwcap.h Merge branch 'for-next/mte' into for-next/core 2020-10-02 12:16:11 +01:00
hyp_image.h kvm: arm64: Move nVHE hyp namespace macros to hyp_image.h 2020-09-30 08:33:52 +01:00
hypervisor.h
image.h
insn.h arm64: kprobe: add checks for ARMv8.3-PAuth combined instructions 2020-09-14 12:07:02 +01:00
io.h iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer 2020-09-28 22:57:43 +01:00
irq.h
irq_work.h arm64: Kill __smp_cross_call and co 2020-09-17 16:37:28 +01:00
irqflags.h arm64: Implement arch_irqs_disabled() 2020-08-26 12:41:55 +02:00
jump_label.h
kasan.h arm64: mm: Introduce vabits_actual 2019-08-09 11:17:21 +01:00
Kbuild KVM: arm64: Use common KVM implementation of MMU memory caches 2020-07-09 13:29:43 -04:00
kernel-pgtable.h arm64: get rid of TEXT_OFFSET 2020-09-07 15:00:52 +01:00
kexec.h Revert "arm64: kexec: make dtb_mem always enabled" 2020-01-10 16:00:50 +00:00
kgdb.h
kprobes.h arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line 2020-11-03 14:03:38 +00:00
kvm_arm.h Merge branch 'for-next/mte' into for-next/core 2020-10-02 12:16:11 +01:00
kvm_asm.h Merge branch 'kvm-arm64/hyp-pcpu' into kvmarm-master/next 2020-09-30 14:05:35 +01:00
kvm_coproc.h KVM/arm64 updates for Linux 5.9: 2020-08-09 12:58:23 -04:00
kvm_emulate.h KVM/arm64 updates for Linux 5.10 2020-10-20 08:14:25 -04:00
kvm_host.h KVM: arm64: Fix AArch32 handling of DBGD{CCINT,SCRext} and DBGVCR 2020-10-29 19:49:03 +00:00
kvm_hyp.h KVM: arm64: nVHE: Handle hyp panics 2020-09-15 18:39:03 +01:00
kvm_mmu.h Merge branch 'kvm-arm64/hyp-pcpu' into kvmarm-master/next 2020-09-30 14:05:35 +01:00
kvm_pgtable.h KVM: arm64: Add support for relaxing stage-2 perms in generic page-table code 2020-09-11 15:51:15 +01:00
kvm_ptrauth.h KVM: arm64: Update context references from host to hyp 2020-09-15 18:39:02 +01:00
kvm_ras.h
kvm_types.h KVM: arm64: Use common KVM implementation of MMU memory caches 2020-07-09 13:29:43 -04:00
linkage.h arm64: Don't insert a BTI instruction at inner labels 2020-06-24 14:24:29 +01:00
lse.h arm64: lse: Fix LSE atomics with LLVM 2020-02-18 18:10:49 +00:00
memory.h arm64: mm: don't assume struct page is always 64 bytes 2020-11-12 08:32:25 +00:00
mman.h arm64: mte: Validate the PROT_MTE request via arch_validate_flags() 2020-09-04 12:46:07 +01:00
mmu.h Merge branch 'for-next/ghostbusters' into for-next/core 2020-10-02 12:15:24 +01:00
mmu_context.h arm64: mm: Pin down ASIDs for sharing mm with devices 2020-09-28 22:15:38 +01:00
mmzone.h
module.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
module.lds.h kbuild: preprocess module linker script 2020-09-25 00:36:41 +09:00
mte.h arm64: mte: Enable swap of tagged pages 2020-09-04 12:46:07 +01:00
neon-intrinsics.h
neon.h
numa.h arm64/mm: return cpu_all_mask when node is NUMA_NO_NODE 2020-09-21 22:05:01 +01:00
page-def.h arm64/mm: Unify CONT_PTE_SHIFT 2020-09-11 16:33:43 +01:00
page.h arm64: mte: Add PROT_MTE support to mmap() and mprotect() 2020-09-04 12:46:07 +01:00
paravirt.h arm64: Retrieve stolen time as paravirtualized guest 2019-10-21 19:20:31 +01:00
pci.h arm64: Enable PCI write-combine resources under sysfs 2020-09-18 14:05:13 +01:00
percpu.h kvm: arm64: Remove __hyp_this_cpu_read 2020-09-30 08:33:52 +01:00
perf_event.h arm64: perf: Add support caps under sysfs 2020-09-28 14:53:45 +01:00
pgalloc.h asm-generic: pgalloc: provide generic pgd_free() 2020-08-07 11:33:26 -07:00
pgtable-hwdef.h ARM: 2020-10-23 11:17:56 -07:00
pgtable-prot.h ARM: 2020-10-23 11:17:56 -07:00
pgtable-types.h arm64: add support for folded p4d page tables 2020-06-04 19:06:21 -07:00
pgtable.h arm64: mm: tidy up top of kernel VA space 2020-11-09 17:15:37 +00:00
pointer_auth.h arm64: sync kernel APIAKey when installing 2020-04-21 15:52:56 +01:00
preempt.h sched/rt, arm64: Use CONFIG_PREEMPTION 2019-12-08 14:37:32 +01:00
probes.h
proc-fns.h arm64: mm: convert cpu_do_switch_mm() to C 2020-02-27 14:30:50 +00:00
processor.h Merge branch 'for-next/mte' into for-next/core 2020-10-02 12:16:11 +01:00
ptdump.h arm64: mm: convert mm/dump.c to use walk_page_range() 2020-02-04 03:05:25 +00:00
ptrace.h irqchip/gic-v3: Support pseudo-NMIs when SCR_EL3.FIQ == 0 2020-09-13 17:52:04 +01:00
pvclock-abi.h KVM: arm64: Implement PV_TIME_FEATURES call 2019-10-21 19:20:27 +01:00
scs.h scs: Move scs_overflow_check() out of architecture code 2020-05-18 17:47:40 +01:00
sdei.h
seccomp.h
sections.h arm64: Remove __exception_text_start and __exception_text_end from asm/section.h 2020-01-08 17:30:19 +00:00
shmparam.h
signal32.h arm64: remove pointless __KERNEL__ guards 2019-08-05 11:06:33 +01:00
simd.h arm64: fpsimd: Make sure SVE setup is complete before SIMD is used 2020-01-14 17:11:21 +00:00
smp.h arm64: Remove custom IRQ stat accounting 2020-09-17 16:37:28 +01:00
smp_plat.h
sparsemem.h
spectre.h arm64: Rewrite Spectre-v4 mitigation code 2020-09-29 16:08:16 +01:00
spinlock.h arm64/spinlock: fix a -Wunused-function warning 2020-02-10 11:29:24 +00:00
spinlock_types.h
stack_pointer.h
stackprotector.h arm64: initialize ptrauth keys for kernel booting task 2020-03-18 09:50:20 +00:00
stacktrace.h arm64: stacktrace: Make stack walk callback consistent with generic code 2020-09-18 14:24:16 +01:00
stage2_pgtable.h KVM: arm64: Remove unused page-table code 2020-09-11 15:51:15 +01:00
stat.h
string.h
suspend.h arm64: Preserve register x18 when CPU is suspended 2020-05-15 16:35:50 +01:00
sync_bitops.h
syscall.h arm64: compat: Ensure upper 32 bits of x0 are zero on syscall return 2020-07-16 11:41:31 +01:00
syscall_wrapper.h arm64: simplify syscall wrapper ifdeffery 2019-10-14 10:55:00 +01:00
sysreg.h arm64: Add workaround for Arm Cortex-A77 erratum 1508412 2020-10-29 12:56:01 +00:00
system_misc.h
thread_info.h arm64: mte: Handle synchronous and asynchronous tag check faults 2020-09-04 12:46:06 +01:00
timex.h
tlb.h arm64: tlb: Set the TTL field in flush_tlb_range 2020-07-07 11:23:47 +01:00
tlbflush.h arm64: use a common .arch preamble for inline assembly 2020-08-28 11:15:15 +01:00
topology.h cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale() 2020-10-08 17:17:27 +02:00
traps.h arm64: traps: Allow force_signal_inject to pass esr error code 2020-09-14 12:07:02 +01:00
uaccess.h uaccess: remove segment_eq 2020-08-12 10:57:58 -07:00
unistd.h mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
unistd32.h mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
uprobes.h
vdso.h arm64/vdso: Add time namespace page 2020-07-24 13:15:20 +01:00
vermagic.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
virt.h arm64: cpufeature: upgrade hyp caps to final 2020-10-30 08:53:10 +00:00
vmalloc.h mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h> 2019-12-10 10:12:55 +01:00
vmap_stack.h mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
word-at-a-time.h
xor.h