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linux/arch/arm64/kernel
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Marc Zyngier 0c93df9622 arm64: Initialise as nVHE before switching to VHE 
As we are aiming to be able to control whether we enable VHE or
not, let's always drop down to EL1 first, and only then upgrade
to VHE if at all possible.

This means that if the kernel is booted at EL2, we always start
with a nVHE init, drop to EL1 to initialise the the kernel, and
only then upgrade the kernel EL to EL2 if possible (the process
is obviously shortened for secondary CPUs).

The resume path is handled similarly to a secondary CPU boot.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: David Brazdil <dbrazdil@google.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210208095732.3267263-6-maz@kernel.org
[will: Avoid calling switch_to_vhe twice on kaslr path]
Signed-off-by: Will Deacon <will@kernel.org>
2021-02-09 13:47:07 +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: Create subtable parsing infrastructure
2019-04-04 18:41:12 +02:00
acpi_parking_protocol.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
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: rename S_FRAME_SIZE to PT_REGS_SIZE
2021-01-13 15:09:06 +00:00
cacheinfo.c
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cpu-reset.S
arm64/relocate_kernel: remove redundant code
2020-09-11 19:06:25 +01:00
cpufeature.c
x86:
2021-01-08 15:06:02 -08:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
debug-monitors.c
arm64: expose FAR_EL1 tag bits in siginfo
2020-11-23 18:17:39 +00:00
efi-entry.S
arm64 updates for 5.8
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: Initialise as nVHE before switching to VHE
2021-02-09 13:47:07 +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: Initialise as nVHE before switching to VHE
2021-02-09 13:47:07 +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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
kaslr.c
kasan, arm64: expand CONFIG_KASAN checks
2020-12-22 12:55:08 -08:00
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
docs: arm: convert docs to ReST and rename to *.rst
2019-07-15 09:20:24 -03:00
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: scs: use vmapped IRQ and SDEI shadow stacks
2020-12-01 11:23:34 +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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
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
kasan, arm64: rename kasan_init_tags and mark as __init
2020-12-22 12:55:07 -08:00
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
arm64: compat: Split kuser32
2019-04-23 18:01:57 +01:00
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
x86:
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 452
2019-06-19 17:09:08 +02:00
sys_compat.c
arm64: expose FAR_EL1 tag bits in siginfo
2020-11-23 18:17:39 +00:00
sys.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
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
arm64 fixes/updates:
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
ARM:
2020-12-20 10:44:05 -08:00