Will Deacon f992b4dfd5 arm64: kpti: Add ->enable callback to remap swapper using nG mappings ... Defaulting to global mappings for kernel space is generally good for performance and appears to be necessary for Cavium ThunderX. If we subsequently decide that we need to enable kpti, then we need to rewrite our existing page table entries to be non-global. This is fiddly, and made worse by the possible use of contiguous mappings, which require a strict break-before-make sequence. Since the enable callback runs on each online CPU from stop_machine context, we can have all CPUs enter the idmap, where secondaries can wait for the primary CPU to rewrite swapper with its MMU off. It's all fairly horrible, but at least it only runs once. Tested-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2018-02-06 22:53:18 +00:00
..
probes	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vdso	arm64 updates for 4.15	2017-11-15 10:56:56 -08:00
.gitignore
acpi_numa.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
acpi_parking_protocol.c	arm64: fix endianness annotation in acpi_parking_protocol.c	2017-06-29 11:33:15 +01:00
acpi.c	arm64: acpi: Remove __init from acpi_psci_use_hvc() for use by SDEI	2018-01-14 18:49:49 +00:00
alternative.c	arm64: alternatives: use tpidr_el2 on VHE hosts	2018-01-13 10:44:33 +00:00
arm64ksyms.c	arm64: switch to RAW_COPY_USER	2017-03-28 18:23:24 -04:00
armv8_deprecated.c	arm64 updates for 4.15	2017-11-15 10:56:56 -08:00
asm-offsets.c	KVM: arm64: Handle RAS SErrors from EL2 on guest exit	2018-01-16 15:09:36 +00:00
bpi.S	arm64: Implement branch predictor hardening for Falkor	2018-01-08 18:47:07 +00:00
cacheinfo.c	arm64: cacheinfo: Remove CCSIDR-based cache information probing	2017-03-20 16:16:54 +00:00
cpu_errata.c	arm64: Branch predictor hardening for Cavium ThunderX2	2018-01-23 19:59:20 +00:00
cpu_ops.c	arm64: cpu_ops: Add missing 'const' qualifiers	2017-12-01 13:05:08 +00:00
cpu-reset.h	arm64: Use __pa_symbol for kernel symbols	2017-01-12 15:05:39 +00:00
cpu-reset.S	arm64: Add software workaround for Falkor erratum 1041	2018-02-06 22:53:13 +00:00
cpufeature.c	arm64: kpti: Add ->enable callback to remap swapper using nG mappings	2018-02-06 22:53:18 +00:00
cpuidle.c	ARM64 / cpuidle: Use new cpuidle macro for entering retention state	2018-01-02 13:50:34 +00:00
cpuinfo.c	arm64: v8.4: Support for new floating point multiplication instructions	2018-01-05 11:29:48 +00:00
crash_dump.c	arm64: kdump: provide /proc/vmcore file	2017-04-05 18:31:38 +01:00
debug-monitors.c	arm64: introduce an order for exceptions	2017-11-02 15:55:41 +00:00
efi-entry.S	arm64: Add software workaround for Falkor erratum 1041	2018-02-06 22:53:13 +00:00
efi-header.S	arm64: efi: split Image code and data into separate PE/COFF sections	2017-04-04 17:50:59 +01:00
efi.c	efi/arm: Enable DMI/SMBIOS	2017-06-05 17:50:44 +02:00
entry32.S
entry-fpsimd.S	arm64/sve: Low-level SVE architectural state manipulation functions	2017-11-03 15:24:14 +00:00
entry-ftrace.S	arm64: Fix static use of function graph	2017-11-03 12:05:23 +00:00
entry.S	arm64: kpti: Fix the interaction between ASID switching and software PAN	2018-01-16 17:37:48 +00:00
fpsimd.c	arm64: fpsimd: Fix state leakage when migrating after sigreturn	2018-01-16 14:39:50 +00:00
ftrace.c	arm64: ftrace: emit ftrace-mod.o contents through code	2017-12-01 13:04:59 +00:00
head.S	arm64: Add software workaround for Falkor erratum 1041	2018-02-06 22:53:13 +00:00
hibernate-asm.S	arm64: handle 52-bit addresses in TTBR	2017-12-22 17:35:21 +00:00
hibernate.c	arm64: don't open code page table entry creation	2017-12-22 17:36:34 +00:00
hw_breakpoint.c	arm64: hw_breakpoint: fix watchpoint matching for tagged pointers	2017-05-09 17:26:40 +01:00
hyp-stub.S	arm64: hyp-stub: Zero x0 on successful stub handling	2017-04-09 07:49:35 -07:00
image.h	arm64 updates for 4.7:	2016-05-16 17:17:24 -07:00
insn.c	arm64 updates for 4.13:	2017-07-05 17:09:27 -07:00
io.c	arm64: Avoid aligning normal memory pointers in __memcpy_{to,from}io	2017-10-24 16:23:07 +01:00
irq.c	arm64: Add vmap_stack header file	2018-01-13 10:45:03 +00:00
jump_label.c
kaslr.c	arm64: kaslr: Adjust the offset to avoid Image across alignment boundary	2017-08-22 18:15:42 +01:00
kgdb.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
kuser32.S
machine_kexec.c	arm64: explicitly mask all exceptions	2017-11-02 15:55:40 +00:00
Makefile	arm64: kernel: Add arch-specific SDEI entry code and CPU masking	2018-01-13 10:45:17 +00:00
module-plts.c	arm64: ftrace: emit ftrace-mod.o contents through code	2017-12-01 13:04:59 +00:00
module.c	arm64: fix endianness annotation for reloc_insn_movw() & reloc_insn_imm()	2017-06-29 11:09:39 +01:00
module.lds	arm64: ftrace: emit ftrace-mod.o contents through code	2017-12-01 13:04:59 +00:00
paravirt.c	arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops	2015-12-21 14:40:54 +00:00
pci.c	PCI: Add a generic weak pcibios_align_resource()	2017-08-02 14:53:16 -05:00
perf_callchain.c	arm64: unwind: remove sp from struct stackframe	2017-08-09 14:10:29 +01:00
perf_event.c	arm64: perf: remove unsupported events for Cortex-A73	2017-12-01 13:05:08 +00:00
perf_regs.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
process.c	arm64: tls: Avoid unconditional zeroing of tpidrro_el0 for native tasks	2017-12-11 13:41:03 +00:00
psci.c	arm64: Use __pa_symbol for kernel symbols	2017-01-12 15:05:39 +00:00
ptrace.c	arm64/sve: ptrace and ELF coredump support	2017-11-03 15:24:18 +00:00
reloc_test_core.c	arm64: relocation testing module	2017-04-04 17:03:32 +01:00
reloc_test_syms.S	arm64: relocation testing module	2017-04-04 17:03:32 +01:00
relocate_kernel.S	arm64: Add software workaround for Falkor erratum 1041	2018-02-06 22:53:13 +00:00
return_address.c	arm64: unwind: remove sp from struct stackframe	2017-08-09 14:10:29 +01:00
sdei.c	arm64: sdei: Add trampoline code for remapping the kernel	2018-01-14 18:49:50 +00:00
setup.c	arm64: Move the async/fiq helpers to explicitly set process context flags	2017-11-02 15:55:41 +00:00
signal32.c	arm64: fpsimd: Fix state leakage when migrating after sigreturn	2018-01-16 14:39:50 +00:00
signal.c	arm64: fpsimd: Fix state leakage when migrating after sigreturn	2018-01-16 14:39:50 +00:00
sleep.S	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
smccc-call.S	firmware: qcom: scm: Fix interrupted SCM calls	2017-02-03 18:46:33 +00:00
smp_spin_table.c	arm64: Use __pa_symbol for kernel symbols	2017-01-12 15:05:39 +00:00
smp.c	arm64: kernel: Add arch-specific SDEI entry code and CPU masking	2018-01-13 10:45:17 +00:00
stacktrace.c	arm64: stacktrace: avoid listing stacktrace functions in stacktrace	2017-09-13 18:53:16 -07:00
suspend.c	arm64: uaccess: Add PAN helper	2018-01-13 10:45:10 +00:00
sys32.c
sys_compat.c	sched/headers: Prepare for the reduction of <linux/sched.h>'s signal API dependency	2017-03-02 08:42:37 +01:00
sys.c	arm64: compat: Check for AArch32 state	2016-04-20 12:22:42 +01:00
time.c	arm64: unwind: remove sp from struct stackframe	2017-08-09 14:10:29 +01:00
topology.c	arm64: Use of_cpu_node_to_id helper for CPU topology parsing	2018-01-02 16:43:12 +00:00
trace-events-emulation.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
traps.c	arm64: kernel: Survive corrected RAS errors notified by SError	2018-01-16 15:06:28 +00:00
vdso.c	arm64/vdso: Support mremap() for vDSO	2017-08-09 12:16:28 +01:00
vmlinux.lds.S	arm64: Extend early page table code to allow for larger kernels	2018-01-14 18:49:52 +00:00