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338d4f49d6
linux/arch/arm64/include/asm
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James Morse 338d4f49d6 arm64: kernel: Add support for Privileged Access Never 
'Privileged Access Never' is a new arm8.1 feature which prevents
privileged code from accessing any virtual address where read or write
access is also permitted at EL0.

This patch enables the PAN feature on all CPUs, and modifies {get,put}_user
helpers temporarily to permit access.

This will catch kernel bugs where user memory is accessed directly.
'Unprivileged loads and stores' using ldtrb et al are unaffected by PAN.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
[will: use ALTERNATIVE in asm and tidy up pan_enable check]
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-07-27 11:08:41 +01:00
..
xen xen/arm/arm64: merge xen/mm32.c into xen/mm.c 2014-12-04 12:41:53 +00:00
acenv.h ARM64 / ACPI: Get RSDP and ACPI boot-time tables 2015-03-25 11:49:30 +00:00
acpi.h ACPI / ARM64: add BAD_MADT_GICC_ENTRY() macro 2015-07-07 14:54:59 +01:00
alternative.h arm64: kernel: Add optional CONFIG_ parameter to ALTERNATIVE() 2015-07-27 11:08:41 +01:00
arch_timer.h arm64: fix missing linux/bug.h include in asm/arch_timer.h 2015-01-07 11:40:59 +00:00
arm-cci.h arm-cci: Get rid of secure transactions for PMU driver 2015-03-27 13:44:35 +00:00
asm-offsets.h
assembler.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
atomic.h locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read() 2014-10-03 06:06:23 +02:00
barrier.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
bitops.h arch,arm64: Convert smp_mb__*() 2014-04-18 11:40:33 +02:00
bitrev.h ARM: 8189/1: arm64:add bitrev.h file to support rbit instruction 2014-12-22 16:47:32 +00:00
boot.h arm64: use fixmap region for permanent FDT mapping 2015-06-02 16:31:33 +01:00
cache.h arm64: Implement support for read-mostly sections 2014-12-03 10:19:35 +00:00
cacheflush.h arm64: kill flush_cache_all() 2015-05-19 15:27:42 +01:00
cachetype.h arm64: kernel: add support for cpu cache information 2015-01-15 11:55:07 +00:00
cmpxchg.h arm64: percpu: Make this_cpu accessors pre-empt safe 2015-03-24 18:02:55 +00:00
compat.h arm64: compat: Remove incorrect comment in compat_siginfo 2015-02-02 16:44:39 +00:00
compiler.h
cpu_ops.h ARM64: kernel: unify ACPI and DT cpus initialization 2015-05-19 16:09:29 +01:00
cpu.h arm64: sanity checks: add missing AArch32 registers 2015-01-07 11:40:58 +00:00
cpufeature.h arm64: kernel: Add support for Privileged Access Never 2015-07-27 11:08:41 +01:00
cpuidle.h arm64: kernel: rename __cpu_suspend to keep it aligned with arm 2015-06-19 14:46:39 +01:00
cputype.h arm64: kernel: Move config_sctlr_el1 2015-07-27 11:08:41 +01:00
debug-monitors.h arm64: Fix typos in KGDB macros 2014-09-25 15:35:41 +01:00
device.h arm64: introduce is_device_dma_coherent 2014-12-04 12:41:49 +00:00
dma-mapping.h arm64 : Introduce support for ACPI _CCA object 2015-06-15 14:40:49 +02:00
dmi.h arm64: dmi: Add SMBIOS/DMI support 2014-11-05 09:03:25 +01:00
efi.h arm64/efi: move virtmap init to early initcall 2015-01-22 14:59:25 +00:00
elf.h mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE 2015-04-14 16:49:05 -07:00
esr.h arm/arm64: KVM: Implement Stage-2 page aging 2015-03-12 22:34:43 +01:00
exception.h
exec.h
fb.h
fixmap.h arm64: use fixmap region for permanent FDT mapping 2015-06-02 16:31:33 +01:00
fpsimd.h arm64: add support for kernel mode NEON in interrupt context 2014-05-08 11:31:57 +02:00
fpsimdmacros.h arm64: Avoid breakage caused by .altmacro in fpsimd save/restore macros 2015-01-29 17:24:39 +00:00
ftrace.h arm64: ftrace: Add system call tracepoint 2014-05-29 09:08:33 +01:00
futex.h arm64: kernel: Add support for Privileged Access Never 2015-07-27 11:08:41 +01:00
hardirq.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
hugetlb.h arm64: hugetlb: remove paragraph about writing to FSF 2015-07-27 11:08:40 +01:00
hw_breakpoint.h arm64: ptrace: fix compat hardware watchpoint reporting 2014-08-28 20:01:36 +01:00
hwcap.h arm64: Add COMPAT_HWCAP_LPAE 2014-11-17 10:43:42 +00:00
hypervisor.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
insn.h arm64: insn: Add aarch64_{get,set}_branch_offset 2015-06-03 15:43:24 +01:00
io.h arm64 updates for 4.2, mostly refactoring/clean-up: 2015-06-24 10:02:15 -07:00
irq_work.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
irq.h irqchip: Add GICv2 specific ACPI boot support 2015-03-26 15:13:07 +00:00
irqflags.h arm64: Add macros to manage processor debug state 2014-02-26 11:16:25 +00:00
jump_label.h jump_label: Allow asm/jump_label.h to be included in assembly 2015-04-09 09:40:23 +02:00
Kbuild mm: clean up per architecture MM hook header files 2015-07-17 16:39:53 -07:00
kgdb.h arm64: Fix typos in KGDB macros 2014-09-25 15:35:41 +01:00
kvm_arm.h KVM/ARM changes for v4.1: 2015-04-07 18:09:20 +02:00
kvm_asm.h arm64 updates for 4.2, mostly refactoring/clean-up: 2015-06-24 10:02:15 -07:00
kvm_coproc.h arm64: KVM: common infrastructure for handling AArch32 CP14/CP15 2014-07-11 04:57:44 -07:00
kvm_emulate.h Fairly small update, but there are some interesting new features. 2015-02-13 09:55:09 -08:00
kvm_host.h arm64: KVM: Switch vgic save/restore to alternative_insn 2015-06-12 15:12:08 +01:00
kvm_mmio.h KVM: arm/arm64: rework MMIO abort handling to use KVM MMIO bus 2015-03-30 17:07:19 +01:00
kvm_mmu.h arm64 updates for 4.1: 2015-04-16 13:58:29 -05:00
kvm_psci.h ARM/ARM64: KVM: Make kvm_psci_call() return convention more flexible 2014-04-30 04:18:57 -07:00
linkage.h
memblock.h
memory.h arm64: Fix overlapping VA allocations 2015-01-23 14:13:14 +00:00
mmu_context.h arm64 updates for 4.1: 2015-04-16 13:58:29 -05:00
mmu.h arm64: remove dead code 2015-07-27 11:08:39 +01:00
module.h
neon.h arm64: add support for kernel mode NEON in interrupt context 2014-05-08 11:31:57 +02:00
opcodes.h arm64: Add AArch32 instruction set condition code checks 2014-11-20 16:33:45 +00:00
page.h arm64 updates for 4.1: 2015-04-16 13:58:29 -05:00
pci.h ARM64 / ACPI: Introduce PCI stub functions for ACPI 2015-03-25 11:49:31 +00:00
percpu.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
perf_event.h arm64: perf: factor out callchain code 2015-07-27 11:08:39 +01:00
pgalloc.h arm64: expose number of page table levels on Kconfig level 2015-04-14 16:49:01 -07:00
pgtable-hwdef.h arm64: Add support for hardware updates of the access and dirty pte bits 2015-07-27 11:08:39 +01:00
pgtable-types.h arm64: expose number of page table levels on Kconfig level 2015-04-14 16:49:01 -07:00
pgtable.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
pmu.h arm64: pmu: add support for interrupt-affinity property 2015-03-24 15:09:47 +00:00
proc-fns.h arm64: kill flush_cache_all() 2015-05-19 15:27:42 +01:00
processor.h arm64: kernel: Add support for Privileged Access Never 2015-07-27 11:08:41 +01:00
psci.h arm64: psci: remove ACPI coupling 2015-05-27 13:22:24 +01:00
ptrace.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
seccomp.h arm64: add seccomp support 2014-11-28 10:24:59 +00:00
shmparam.h
signal32.h arm64: Use get_signal() signal_setup_done() 2014-08-06 12:56:16 +02:00
smp_plat.h arm64: smp_plat: add get_logical_index 2015-05-27 13:21:34 +01:00
smp.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
sparsemem.h arm64: mm: update max pa bits to 48 2014-08-19 20:23:02 +01:00
spinlock_types.h arm64: Fix the endianness of arch_spinlock_t 2013-10-25 16:10:22 +01:00
spinlock.h arm64/spinlock: Replace ACCESS_ONCE READ_ONCE 2014-12-18 09:54:40 +01:00
stackprotector.h arm64: Add CONFIG_CC_STACKPROTECTOR 2014-07-09 12:23:48 +01:00
stacktrace.h
stat.h
string.h arm64: lib: Implement optimized string length routines 2014-05-23 15:17:12 +01:00
suspend.h arm64: kernel: rename __cpu_suspend to keep it aligned with arm 2015-06-19 14:46:39 +01:00
sync_bitops.h arm64/xen: introduce asm/xen header files on arm64 2013-06-07 10:39:45 +00:00
syscall.h arm64: Add audit support 2014-07-10 11:06:00 +01:00
sysreg.h arm64: kernel: Add support for Privileged Access Never 2015-07-27 11:08:41 +01:00
system_misc.h arm64: use private ratelimit state along with show_unhandled_signals 2015-06-19 16:26:15 +01:00
thread_info.h arm64: Remove signal translation and exec_domain 2015-04-12 20:58:24 +02:00
timex.h arm64: kernel: compiling issue, need delete read_current_timer() 2013-06-10 17:58:20 +01:00
tlb.h arm64: expose number of page table levels on Kconfig level 2015-04-14 16:49:01 -07:00
tlbflush.h arm64: move update_mmu_cache() into asm/pgtable.h 2015-07-27 11:08:39 +01:00
topology.h arm64: force CONFIG_SMP=y and remove redundant #ifdefs 2015-07-27 11:08:40 +01:00
traps.h arm64: Add support for hooks to handle undefined instructions 2014-11-20 16:33:43 +00:00
uaccess.h arm64: kernel: Add support for Privileged Access Never 2015-07-27 11:08:41 +01:00
unistd32.h arm64: fix implementation of mmap2 compat syscall 2015-03-19 10:43:51 +00:00
unistd.h arm64 updates for 3.20: 2015-02-11 18:03:54 -08:00
vdso_datapage.h
vdso.h
virt.h arm64: KVM: remove __kvm_hyp_code_{start,end} from hyp.S 2014-07-11 04:57:35 -07:00
word-at-a-time.h arm64: dcache: select DCACHE_WORD_ACCESS for little-endian CPUs 2013-12-19 17:43:08 +00:00