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d50240a5f6
linux/arch/arm64/kernel
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Will Deacon d50240a5f6 arm64: mm: permit use of tagged pointers at EL0 
TCR.TBI0 can be used to cause hardware address translation to ignore the
top byte of userspace virtual addresses. Whilst not especially useful in
standard C programs, this can be used by JITs to `tag' pointers with
various pieces of metadata.

This patch enables this bit for AArch64 Linux, and adds a new file to
Documentation/arm64/ which describes some potential caveats when using
tagged virtual addresses.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2013-09-03 10:18:02 +01:00
..
vdso arm64: vdso: remove broken, redundant sequence counting for timezones 2013-01-10 10:43:43 +00:00
.gitignore arm64: Build infrastructure 2012-09-17 13:42:21 +01:00
arm64ksyms.c arm64: kernel: compiling issue, need 'EXPORT_SYMBOL(clear_page)' 2013-05-24 17:31:03 +01:00
asm-offsets.c arm64: KVM: Kconfig integration 2013-07-04 14:40:26 +02:00
cputable.c arm64: CPU support 2012-09-17 13:41:59 +01:00
debug-monitors.c arm64: delete __cpuinit usage from all users 2013-07-14 19:36:52 -04:00
early_printk.c arm64: Fix duplicate definition of early_console 2013-05-13 11:44:53 +01:00
entry-fpsimd.S arm64: move FP-SIMD save/restore code to a macro 2012-12-05 11:26:50 +00:00
entry.S arm64: mm: permit use of tagged pointers at EL0 2013-09-03 10:18:02 +01:00
fpsimd.c arm64: add support for kernel mode NEON 2013-08-20 12:12:26 +01:00
head.S arm64: Expand arm64 image header 2013-08-22 11:45:04 +01:00
hw_breakpoint.c arm64: delete __cpuinit usage from all users 2013-07-14 19:36:52 -04:00
hyp-stub.S arm64: add hypervisor stub 2012-12-05 11:26:49 +00:00
io.c arm64: Device specific operations 2012-09-17 13:42:04 +01:00
irq.c arm64: Use irqchip_init() for interrupt controller initialisation 2013-03-26 16:02:23 +00:00
kuser32.S arm64: 32-bit (compat) applications support 2012-09-17 13:42:12 +01:00
Makefile arm64: SMP: enable PSCI boot method 2013-01-29 16:56:37 +00:00
module.c arm64: Loadable modules 2012-09-17 13:42:19 +01:00
perf_event.c arm64: perf: fix ARMv8 EVTYPE_MASK to include NSH bit 2013-08-20 12:12:25 +01:00
process.c arm64: Fix definition of arm_pm_restart to match the declaration 2013-07-23 11:05:10 +01:00
psci.c arm64: psci: add support for PSCI invocations from the kernel 2013-01-29 16:56:37 +00:00
ptrace.c arm64: debug: consolidate software breakpoint handlers 2013-06-12 11:23:02 +01:00
setup.c arm64: delay: don't bother reporting bogomips in /proc/cpuinfo 2013-08-30 18:47:07 +01:00
signal32.c arm64: Removed unused variable in compat_setup_rt_frame() 2013-03-18 10:12:56 +00:00
signal.c arm64: switch to generic sigaltstack 2013-02-14 09:17:29 -05:00
smp_psci.c arm64: psci: Use the MPIDR values from cpu_logical_map for cpu ids. 2013-03-26 11:58:10 +00:00
smp_spin_table.c arm64: SMP: rework the SMP code to be enabling method agnostic 2013-01-29 16:56:37 +00:00
smp.c arm64: delay: don't bother reporting bogomips in /proc/cpuinfo 2013-08-30 18:47:07 +01:00
stacktrace.c arm64: Exception handling 2012-09-17 10:24:46 +01:00
sys32.S unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
sys_compat.c compat: generic compat_sys_sched_rr_get_interval() implementation 2012-12-17 17:15:18 -08:00
sys.c arm64: switch to generic sigaltstack 2013-02-14 09:17:29 -05:00
time.c arm64: kernel: compiling issue, need delete read_current_timer() 2013-06-10 17:58:20 +01:00
traps.c arm64: debug: consolidate software breakpoint handlers 2013-06-12 11:23:02 +01:00
vdso.c arm64: vdso: remove broken, redundant sequence counting for timezones 2013-01-10 10:43:43 +00:00
vmlinux.lds.S arm64: move elf notes into readonly segment 2013-08-27 17:34:09 +01:00