Steve Capper 363524d2b1 arm64: mm: Introduce DEFAULT_MAP_WINDOW ... We wish to introduce a 52-bit virtual address space for userspace but maintain compatibility with software that assumes the maximum VA space size is 48 bit. In order to achieve this, on 52-bit VA systems, we make mmap behave as if it were running on a 48-bit VA system (unless userspace explicitly requests a VA where addr[51:48] != 0). On a system running a 52-bit userspace we need TASK_SIZE to represent the 52-bit limit as it is used in various places to distinguish between kernelspace and userspace addresses. Thus we need a new limit for mmap, stack, ELF loader and EFI (which uses TTBR0) to represent the non-extended VA space. This patch introduces DEFAULT_MAP_WINDOW and DEFAULT_MAP_WINDOW_64 and switches the appropriate logic to use that instead of TASK_SIZE. Signed-off-by: Steve Capper <steve.capper@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2018-12-10 18:42:17 +00:00
..
xen	arm64: xen: Use existing helper to check interrupt status	2018-10-03 16:14:11 +01:00
acenv.h
acpi.h	arm64: acpi: Prepare for longer MADTs	2018-11-27 18:00:14 +00:00
alternative.h	arm64: Avoid flush_icache_range() in alternatives patching code	2018-06-27 18:21:53 +01:00
arch_gicv3.h	irqchip/gic-v3: Probe for SCR_EL3 being clear before resetting AP0Rn	2018-03-22 13:46:18 +00:00
arch_timer.h
arm_dsu_pmu.h
arm-cci.h
asm-bug.h
asm-offsets.h
asm-uaccess.h	arm64: mm: Add additional parameter to uaccess_ttbr0_disable	2018-01-17 13:57:49 +01:00
assembler.h	arm64: Fix minor issues with the dcache_by_line_op macro	2018-12-10 15:03:51 +00:00
atomic_ll_sc.h	arm64: cmpxchg: Use "K" instead of "L" for ll/sc immediate constraint	2018-12-07 17:28:13 +00:00
atomic_lse.h	arm64: Avoid masking "old" for LSE cmpxchg() implementation	2018-12-07 17:28:01 +00:00
atomic.h	atomics/treewide: Make conditional inc/dec ops optional	2018-06-21 14:25:24 +02:00
barrier.h	arm64: Add support for SB barrier and patch in over DSB; ISB sequences	2018-12-06 16:47:04 +00:00
bitops.h	locking/atomics/arm64, arm64/bitops: Include <asm-generic/bitops/ext2-atomic-setbit.h>	2018-06-21 12:52:12 +02:00
bitrev.h
boot.h
brk-imm.h
bug.h
cache.h	arm64: cpufeature: Fix handling of CTR_EL0.IDC field	2018-10-16 11:53:31 +01:00
cacheflush.h	arm64: IPI each CPU after invalidating the I-cache for kernel mappings	2018-07-05 17:24:36 +01:00
checksum.h
clocksource.h
cmpxchg.h	arm64: Avoid masking "old" for LSE cmpxchg() implementation	2018-12-07 17:28:01 +00:00
compat.h	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-10-25 11:14:36 -07:00
cpu_ops.h
cpu.h
cpucaps.h	arm64: Add support for SB barrier and patch in over DSB; ISB sequences	2018-12-06 16:47:04 +00:00
cpufeature.h	arm64: capabilities: Batch cpu_enable callbacks	2018-12-06 15:12:26 +00:00
cpuidle.h
cputype.h	arm64: capabilities: Merge duplicate Cavium erratum entries	2018-12-06 11:47:44 +00:00
current.h
daifflags.h	arm64: daifflags: Use irqflags functions for daifflags	2018-10-03 16:08:52 +01:00
dcc.h
debug-monitors.h
device.h	arm64: use the generic swiotlb_dma_ops	2018-10-19 08:53:24 +02:00
dma-mapping.h	arm64: use the generic swiotlb_dma_ops	2018-10-19 08:53:24 +02:00
dmi.h
efi.h	efi: Deduplicate efi_open_volume()	2018-07-22 14:13:43 +02:00
elf.h	arm64: mm: Introduce DEFAULT_MAP_WINDOW	2018-12-10 18:42:17 +00:00
esr.h	arm64: Trap WFI executed in userspace	2018-10-01 16:52:24 +01:00
exception.h	arm64: kernel: Prepare for a DISR user	2018-01-16 15:07:12 +00:00
exec.h
extable.h
fb.h
fixmap.h
fpsimd.h	arm64: move sve_user_{enable,disable} to <asm/fpsimd.h>	2018-07-12 14:40:39 +01:00
fpsimdmacros.h	arm64/sve: Write ZCR_EL1 on context switch only if changed	2018-05-17 18:19:53 +01:00
ftrace.h	arm64: ftrace: enable graph FP test	2018-11-30 13:29:04 +00:00
futex.h	arm64: futex: Mask __user pointers prior to dereference	2018-02-06 22:53:42 +00:00
hardirq.h
hugetlb.h	hugetlb: introduce generic version of huge_ptep_get	2018-10-26 16:26:34 -07:00
hw_breakpoint.h	perf/hw_breakpoint: Remove default hw_breakpoint_arch_parse()	2018-06-26 09:07:58 +02:00
hwcap.h
hypervisor.h
insn.h	arm64/insn: add support for emitting ADR/ADRP instructions	2018-11-27 18:47:33 +00:00
io.h	arm64: io: Ensure value passed to __iormb() is held in a 64-bit register	2018-11-29 16:36:18 +00:00
irq_work.h
irq.h	arm64: Use the new GENERIC_IRQ_MULTI_HANDLER	2018-08-03 12:14:09 +02:00
irqflags.h
jump_label.h	arm64/kernel: jump_label: Switch to relative references	2018-09-27 17:56:47 +02:00
kasan.h	kasan: clean up KASAN_SHADOW_SCALE_SHIFT usage	2018-02-06 18:32:43 -08:00
Kbuild	arm64: preempt: Provide our own implementation of asm/preempt.h	2018-12-07 12:35:53 +00:00
kernel-pgtable.h	arm64/mm: Separate boot-time page tables from swapper_pg_dir	2018-09-25 15:10:54 +01:00
kexec.h
kgdb.h
kprobes.h	arm64/kprobes: Remove jprobe implementation	2018-06-21 12:33:07 +02:00
kvm_arm.h	KVM updates for v4.20	2018-10-25 17:57:35 -07:00
kvm_asm.h	KVM: arm64: Safety check PSTATE when entering guest and handle IL	2018-10-19 11:13:03 +01:00
kvm_coproc.h
kvm_emulate.h	arm64/cpufeatures: Introduce ESR_ELx_SYS64_ISS_RT()	2018-09-21 11:05:25 +01:00
kvm_host.h	KVM updates for v4.20	2018-10-25 17:57:35 -07:00
kvm_hyp.h	kvm: arm64: Configure VTCR_EL2 per VM	2018-10-01 13:50:29 +01:00
kvm_mmio.h
kvm_mmu.h	KVM updates for v4.20	2018-10-25 17:57:35 -07:00
linkage.h
lse.h	arm64: lse: Include compiler_types.h and export.h for out-of-line LL/SC	2018-03-27 13:14:49 +01:00
memblock.h
memory.h	arm64: kasan: Increase stack size for KASAN_EXTRA	2018-12-10 17:53:12 +00:00
mmu_context.h	arm64: mm: apply r/o permissions of VM areas to its linear alias as well	2018-11-20 11:38:26 +00:00
mmu.h	arm64/mm: Separate boot-time page tables from swapper_pg_dir	2018-09-25 15:10:54 +01:00
mmzone.h
module.h	arm64/module: switch to ADRP/ADD sequences for PLT entries	2018-11-27 19:00:45 +00:00
neon-intrinsics.h	arm64/neon: add workaround for ambiguous C99 stdint.h types	2018-12-06 16:47:05 +00:00
neon.h	arm64: drop unused kernel_neon_begin_partial() macro	2018-07-31 10:13:50 +01:00
numa.h	arm64: numa: separate out updates to percpu nodeid and NUMA node cpumap	2018-07-06 13:18:18 +01:00
page-def.h
page.h	arm64: Kconfig: Remove ARCH_HAS_HOLES_MEMORYMODEL	2018-09-21 12:02:45 +01:00
paravirt.h	x86/paravirt: Use a single ops structure	2018-09-03 16:50:35 +02:00
pci.h	PCI: remove PCI_DMA_BUS_IS_PHYS	2018-05-07 07:15:41 +02:00
percpu.h	arm64: percpu: Rewrite per-cpu ops to allow use of LSE atomics	2018-12-07 17:28:06 +00:00
perf_event.h
pgalloc.h	arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables	2018-02-16 18:13:57 +00:00
pgtable-hwdef.h	arm64: mm: Support Common Not Private translations	2018-09-18 12:02:27 +01:00
pgtable-prot.h	arm64: KVM: Avoid marking pages as XN in Stage-2 if CTR_EL0.DIC is set	2018-07-09 11:37:42 +01:00
pgtable-types.h
pgtable.h	arm64: mm: Don't wait for completion of TLB invalidation when page aging	2018-11-26 16:59:46 +00:00
preempt.h	arm64: preempt: Provide our own implementation of asm/preempt.h	2018-12-07 12:35:53 +00:00
probes.h
proc-fns.h
processor.h	arm64: mm: Introduce DEFAULT_MAP_WINDOW	2018-12-10 18:42:17 +00:00
ptdump.h
ptrace.h	KVM updates for v4.20	2018-10-25 17:57:35 -07:00
sdei.h	arm64: Add stack information to on_accessible_stack	2018-07-26 11:36:07 +01:00
seccomp.h
sections.h	arm64: mmu: add the entry trampolines start/end section markers into sections.h	2018-01-14 18:49:50 +00:00
shmparam.h
signal32.h
simd.h	arm64: neon: Fix function may_use_simd() return error status	2018-07-11 17:02:02 +01:00
smp_plat.h
smp.h
sparsemem.h
spinlock_types.h	arm64: locking: Replace ticket lock implementation with qspinlock	2018-07-05 10:05:06 +01:00
spinlock.h	arm64: locking: Replace ticket lock implementation with qspinlock	2018-07-05 10:05:06 +01:00
stack_pointer.h
stackprotector.h
stacktrace.h	arm64: Add stack information to on_accessible_stack	2018-07-26 11:36:07 +01:00
stage2_pgtable.h	kvm: arm64: Allow tuning the physical address size for VM	2018-10-03 11:45:20 +01:00
stat.h	y2038: globally rename compat_time to old_time32	2018-08-27 14:48:48 +02:00
string.h	arm64: lib: use C string functions with KASAN enabled	2018-10-26 16:25:18 -07:00
suspend.h
sync_bitops.h
syscall_wrapper.h	arm64: implement syscall wrappers	2018-07-12 14:49:48 +01:00
syscall.h	arm64: implement syscall wrappers	2018-07-12 14:49:48 +01:00
sysreg.h	arm64: Add support for SB barrier and patch in over DSB; ISB sequences	2018-12-06 16:47:04 +00:00
system_misc.h	signal/arm64: Push siginfo generation into arm64_notify_die	2018-09-27 21:52:54 +02:00
thread_info.h	arm64: preempt: Provide our own implementation of asm/preempt.h	2018-12-07 12:35:53 +00:00
timex.h
tlb.h	arm64: tlb: Avoid synchronous TLBIs when freeing page tables	2018-09-11 16:49:12 +01:00
tlbflush.h	arm64: tlbi: Set MAX_TLBI_OPS to PTRS_PER_PTE	2018-11-27 19:01:21 +00:00
topology.h	sched/topology, arch/arm64: Rebuild the sched_domain hierarchy when the CPU capacity changes	2018-09-10 11:05:47 +02:00
traps.h	signal/arm64: Add and use arm64_force_sig_ptrace_errno_trap	2018-09-27 21:55:15 +02:00
uaccess.h	arm64: Add support for SB barrier and patch in over DSB; ISB sequences	2018-12-06 16:47:04 +00:00
unistd32.h	arm64: convert compat wrappers to C	2018-07-12 14:49:48 +01:00
unistd.h	y2038: utimes: Rework #ifdef guards for compat syscalls	2018-08-29 15:42:23 +02:00
uprobes.h
vdso_datapage.h
vdso.h
virt.h	arm64: capabilities: Change scope of VHE to Boot CPU feature	2018-03-26 18:01:41 +01:00
vmap_stack.h
word-at-a-time.h
xor.h	arm64: crypto: add NEON accelerated XOR implementation	2018-12-06 16:47:06 +00:00