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f8da5752fd1b25f1ecf78a79013e2dfd2b860589
linux/arch/arm64/kernel
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Marc Zyngier f8da5752fd arm64: cpufeatures: Allow disabling of Pointer Auth from the command-line 
In order to be able to disable Pointer Authentication  at runtime,
whether it is for testing purposes, or to work around HW issues,
let's add support for overriding the ID_AA64ISAR1_EL1.{GPI,GPA,API,APA}
fields.

This is further mapped on the arm64.nopauth command-line alias.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: David Brazdil <dbrazdil@google.com>
Tested-by: Srinivas Ramana <sramana@codeaurora.org>
Link: https://lore.kernel.org/r/20210208095732.3267263-23-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2021-02-09 13:50:57 +00:00
..
probes
arm64: rename S_FRAME_SIZE to PT_REGS_SIZE
2021-01-13 15:09:06 +00:00
vdso
arm64: vdso: disable .eh_frame_hdr via /DISCARD/ instead of --no-eh-frame-hdr
2021-01-05 17:52:13 +00:00
vdso32
arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y
2020-11-09 21:49:34 +00:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
acpi_numa.c
…
acpi_parking_protocol.c
…
acpi.c
arm64: permit ACPI core to map kernel memory used for table overrides
2020-09-30 22:27:51 +01:00
alternative.c
arm64: alternatives: Remove READ_ONCE() usage during patch operation
2020-11-09 21:49:34 +00:00
armv8_deprecated.c
arm64: uaccess: rename privileged uaccess routines
2020-12-02 19:49:10 +00:00
asm-offsets.c
arm64: Honor VHE being disabled from the command-line
2021-02-09 13:50:56 +00:00
cacheinfo.c
…
cpu_errata.c
Merge branch 'kvm-arm64/vector-rework' into kvmarm-master/next
2020-11-27 11:47:08 +00:00
cpu_ops.c
arm64: Introduce get_cpu_ops() helper function
2020-03-24 17:24:19 +00:00
cpu-reset.h
…
cpu-reset.S
arm64/relocate_kernel: remove redundant code
2020-09-11 19:06:25 +01:00
cpufeature.c
arm64: cpufeatures: Allow disabling of Pointer Auth from the command-line
2021-02-09 13:50:57 +00:00
cpuidle.c
arm64: Introduce get_cpu_ops() helper function
2020-03-24 17:24:19 +00:00
cpuinfo.c
arm64: avoid -Woverride-init warning
2020-10-28 13:38:36 +00:00
crash_core.c
arm64/crash_core: Export TCR_EL1.T1SZ in vmcoreinfo
2020-07-02 17:56:49 +01:00
crash_dump.c
…
debug-monitors.c
arm64: expose FAR_EL1 tag bits in siginfo
2020-11-23 18:17:39 +00:00
efi-entry.S
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2020-06-01 15:18:27 -07:00
efi-header.S
arm64: head: tidy up the Image header definition
2020-11-17 16:14:20 +00:00
efi-rt-wrapper.S
Merge branch 'for-next/scs' into for-next/core
2020-05-28 18:03:40 +01:00
efi.c
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
entry-common.c
Merge remote-tracking branch 'arm64/for-next/fixes' into for-next/core
2020-12-09 18:04:55 +00:00
entry-fpsimd.S
arm64/sve: Implement a helper to load SVE registers from FPSIMD state
2020-09-21 18:06:33 +01:00
entry-ftrace.S
arm64: rename S_FRAME_SIZE to PT_REGS_SIZE
2021-01-13 15:09:06 +00:00
entry.S
arm64: rename S_FRAME_SIZE to PT_REGS_SIZE
2021-01-13 15:09:06 +00:00
fpsimd.c
arm64: reject prctl(PR_PAC_RESET_KEYS) on compat tasks
2020-10-15 10:50:09 +01:00
ftrace.c
arm64: ftrace: Change CONFIG_FTRACE_WITH_REGS to CONFIG_DYNAMIC_FTRACE_WITH_REGS
2020-06-08 15:44:59 +01:00
head.S
arm64: Defer enabling pointer authentication on boot core
2021-02-09 13:50:57 +00:00
hibernate-asm.S
arm64: kernel: Convert to modern annotations for assembly functions
2020-05-04 12:46:03 +01:00
hibernate.c
arm64: mte: reset the page tag in page->flags
2020-12-22 12:55:07 -08:00
hw_breakpoint.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
hyp-stub.S
arm64: Honor VHE being disabled from the command-line
2021-02-09 13:50:56 +00:00
idreg-override.c
arm64: cpufeatures: Allow disabling of Pointer Auth from the command-line
2021-02-09 13:50:57 +00:00
image-vars.h
kasan, arm64: expand CONFIG_KASAN checks
2020-12-22 12:55:08 -08:00
image.h
arm64: get rid of TEXT_OFFSET
2020-09-07 15:00:52 +01:00
insn.c
arm64: kprobe: disable probe of fault prone ptrauth instruction
2020-09-14 12:07:02 +01:00
io.c
…
irq.c
Merge remote-tracking branch 'arm64/for-next/fixes' into for-next/core
2020-12-09 18:04:55 +00:00
jump_label.c
…
kaslr.c
arm64: Move "nokaslr" over to the early cpufeature infrastructure
2021-02-09 13:50:57 +00:00
kexec_image.c
arm64: kexec_file: Fix sparse warning
2020-11-10 13:11:44 +00:00
kgdb.c
arm64: kgdb: Fix single-step exception handling oops
2020-07-08 22:18:54 +01:00
kuser32.S
…
machine_kexec_file.c
arm64: kexec_file: try more regions if loading segments fails
2020-11-05 21:48:05 +00:00
machine_kexec.c
arm64: fix the flush_icache_range arguments in machine_kexec
2020-05-11 12:02:14 +01:00
Makefile
arm64: cpufeature: Add an early command-line cpufeature override facility
2021-02-09 13:50:52 +00:00
module-plts.c
arm64/module: set trampoline section flags regardless of CONFIG_DYNAMIC_FTRACE
2020-09-02 08:35:33 +01:00
module.c
kasan, arm64: expand CONFIG_KASAN checks
2020-12-22 12:55:08 -08:00
mte.c
arm64: mte: switch GCR_EL1 in kernel entry and exit
2020-12-22 12:55:07 -08:00
paravirt.c
arm64: paravirt: Initialize steal time when cpu is online
2020-09-17 18:12:18 +01:00
pci.c
PCI: Constify struct pci_ecam_ops
2020-05-01 16:28:59 +01:00
perf_callchain.c
arm64: stacktrace: Make stack walk callback consistent with generic code
2020-09-18 14:24:16 +01:00
perf_event.c
Revert "arm64: Enable perf events based hard lockup detector"
2021-01-13 15:08:41 +00:00
perf_regs.c
perf/arch: Remove perf_sample_data::regs_user_copy
2020-11-09 18:12:34 +01:00
pointer_auth.c
arm64: reject prctl(PR_PAC_RESET_KEYS) on compat tasks
2020-10-15 10:50:09 +01:00
process.c
Merge branch 'kvm-master' into kvm-next
2021-01-07 18:06:52 -05:00
proton-pack.c
Merge remote-tracking branch 'arm64/for-next/fixes' into for-next/core
2020-12-09 18:04:55 +00:00
psci.c
arm64: psci: Avoid printing in cpu_psci_cpu_die()
2020-11-10 13:11:44 +00:00
ptrace.c
arm64: expose FAR_EL1 tag bits in siginfo
2020-11-23 18:17:39 +00:00
reloc_test_core.c
…
reloc_test_syms.S
arm64: kernel: Convert to modern annotations for assembly functions
2020-05-04 12:46:03 +01:00
relocate_kernel.S
arm64/relocate_kernel: remove redundant code
2020-09-11 19:06:25 +01:00
return_address.c
arm64: stacktrace: Make stack walk callback consistent with generic code
2020-09-18 14:24:16 +01:00
sdei.c
Merge branch 'kvm-master' into kvm-next
2021-01-07 18:06:52 -05:00
setup.c
arm64: Extract early FDT mapping from kaslr_early_init()
2021-02-09 13:47:50 +00:00
signal32.c
arm64: compat: Always use sigpage for sigreturn trampoline
2020-06-23 14:56:24 +01:00
signal.c
arm64: entry: remove redundant IRQ flag tracing
2021-01-13 12:51:30 +00:00
sigreturn32.S
…
sleep.S
arm64: Initialise as nVHE before switching to VHE
2021-02-09 13:47:07 +00:00
smccc-call.S
arm64/kernel: Remove needless Call Frame Information annotations
2020-09-01 09:50:36 +02:00
smp_spin_table.c
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
smp.c
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2021-01-08 15:06:02 -08:00
stacktrace.c
arm64: Move console stack display code to stacktrace.c
2020-09-21 19:43:03 +01:00
suspend.c
arm64: uaccess: remove set_fs()
2020-12-02 19:49:11 +00:00
sys32.c
…
sys_compat.c
arm64: expose FAR_EL1 tag bits in siginfo
2020-11-23 18:17:39 +00:00
sys.c
…
syscall.c
arm64: syscall: include prototype for EL0 SVC functions
2021-01-15 10:05:27 +00:00
time.c
arm64: time: Replace <linux/clk-provider.h> by <linux/of_clk.h>
2020-02-12 17:26:38 +00:00
topology.c
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2020-12-18 10:57:27 -08:00
trace-events-emulation.h
…
traps.c
arm64: traps: remove duplicate include statement
2021-01-05 17:52:12 +00:00
vdso.c
mm: forbid splitting special mappings
2020-12-15 12:13:41 -08:00
vmlinux.lds.S
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2020-12-20 10:44:05 -08:00