Marc Zyngier b3320142f3 arm64: Fix early handling of FEAT_E2H0 not being implemented ... Commit 3944382fa6 introduced checks for the FEAT_E2H0 not being implemented. However, the check is absolutely wrong and makes a point it testing a bit that is guaranteed to be zero. On top of that, the detection happens way too late, after the init_el2_state has done its job. This went undetected because the HW this was tested on has E2H being RAO/WI, and not RES1. However, the bug shows up when run as a nested guest, where HCR_EL2.E2H is not necessarily set to 1. As a result, booting the kernel in hVHE mode fails with timer accesses being cought in a trap loop (which was fun to debug). Fix the check for ID_AA64MMFR4_EL1.E2H0, and set the HCR_EL2.E2H bit early so that it can be checked by the rest of the init sequence. With this, hVHE works again in a NV environment that doesn't have FEAT_E2H0. Fixes: 3944382fa6 ("arm64: Treat HCR_EL2.E2H as RES1 when ID_AA64MMFR4_EL1.E2H0 is negative") Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20240321115414.3169115-1-maz@kernel.org Signed-off-by: Oliver Upton <oliver.upton@linux.dev>		2024-04-01 01:33:29 -07:00
..
pi	Revert "arm64: mm: add support for WXN memory translation attribute"	2024-03-13 10:53:20 +00:00
probes	arm64: kretprobes: acquire the regs via a BRK exception	2024-02-20 18:13:57 +00:00
vdso	kbuild: unify vdso_install rules	2023-10-28 21:09:02 +09:00
vdso32	arm64: vdso32: Remove unused vdso32-offsets.h	2024-01-30 11:59:17 +00:00
.gitignore	…
Makefile	- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames	2024-03-14 17:43:30 -07:00
acpi.c	…
acpi_numa.c	…
acpi_parking_protocol.c	arm64: smp: Remove dedicated wakeup IPI	2023-09-25 17:15:28 +01:00
alternative.c	Merge branches 'for-next/kpti', 'for-next/missing-proto-warn', 'for-next/iss2-decode', 'for-next/kselftest', 'for-next/misc', 'for-next/feat_mops', 'for-next/module-alloc', 'for-next/sysreg', 'for-next/cpucap', 'for-next/acpi', 'for-next/kdump', 'for-next/acpi-doc', 'for-next/doc' and 'for-next/tpidr2-fix', remote-tracking branch 'arm64/for-next/perf' into for-next/core	2023-06-23 18:32:20 +01:00
armv8_deprecated.c	arm: Remove now superfluous sentinel elem from ctl_table arrays	2023-10-10 15:22:02 -07:00
asm-offsets.c	arm64: make member of struct pt_regs and it's offset macro in the same order	2024-02-22 19:07:49 +00:00
cacheinfo.c	…
compat_alignment.c	…
cpu-reset.S	…
cpu_errata.c	arm64: Subscribe Microsoft Azure Cobalt 100 to ARM Neoverse N2 errata	2024-02-15 11:47:22 +00:00
cpu_ops.c	…
cpufeature.c	S390:	2024-03-15 13:03:13 -07:00
cpuidle.c	arm64: Explicitly include correct DT includes	2023-07-31 14:45:38 +01:00
cpuinfo.c	S390:	2024-03-15 13:03:13 -07:00
crash_dump.c	…
debug-monitors.c	…
efi-header.S	…
efi-rt-wrapper.S	…
efi.c	arm64/mm: new ptep layer to manage contig bit	2024-02-22 15:27:18 -08:00
elfcore.c	…
entry-common.c	arm64: Unmask Debug + SError in do_notify_resume()	2024-02-20 18:12:13 +00:00
entry-fpsimd.S	…
entry-ftrace.S	…
entry.S	arm64: entry: simplify kernel_exit logic	2024-01-18 11:00:09 +00:00
fpsimd.c	arm64 updates for 6.9:	2024-03-14 15:35:42 -07:00
ftrace.c	…
head.S	arm64: Fix early handling of FEAT_E2H0 not being implemented	2024-04-01 01:33:29 -07:00
hibernate-asm.S	…
hibernate.c	…
hw_breakpoint.c	arm64/hw_breakpoint: Directly use ESR_ELx_WNR for an watchpoint exception	2024-03-01 17:36:51 +00:00
hyp-stub.S	ARM64:	2023-07-03 15:32:22 -07:00
idle.c	arm64: idle: Tag the arm64 idle functions as __cpuidle	2023-09-25 17:15:28 +01:00
image-vars.h	arm64: Enable LPA2 at boot if supported by the system	2024-02-16 12:42:40 +00:00
image.h	…
io.c	…
irq.c	arm64: irq: set the correct node for shadow call stack	2023-12-13 12:09:00 +00:00
jump_label.c	…
kaslr.c	arm64: kaslr: Use feature override instead of parsing the cmdline again	2024-02-16 12:42:31 +00:00
kexec_image.c	kexec_file, arm64: print out debugging message if required	2023-12-20 15:02:57 -08:00
kgdb.c	…
kuser32.S	…
machine_kexec.c	arm64, crash: wrap crash dumping code into crash related ifdefs	2024-02-23 17:48:23 -08:00
machine_kexec_file.c	arm64, crash: wrap crash dumping code into crash related ifdefs	2024-02-23 17:48:23 -08:00
module-plts.c	Merge branch 'for-next/cpus_have_const_cap' into for-next/core	2023-10-26 17:10:18 +01:00
module.c	arm64: head: move dynamic shadow call stack patching into early C runtime	2024-02-16 12:42:30 +00:00
mte.c	arm64/mm: new ptep layer to manage contig bit	2024-02-22 15:27:18 -08:00
paravirt.c	…
patching.c	arm64: patching: implement text_poke API	2024-02-28 13:44:47 -08:00
pci.c	arm64: Explicitly include correct DT includes	2023-07-31 14:45:38 +01:00
perf_callchain.c	…
perf_regs.c	…
pointer_auth.c	…
process.c	arm64: remove unneeded BUILD_BUG_ON assertion	2024-02-22 11:02:51 +00:00
proton-pack.c	arm64: Avoid cpus_have_const_cap() for ARM64_UNMAP_KERNEL_AT_EL0	2023-10-16 14:17:06 +01:00
psci.c	…
ptrace.c	arm64 updates for 6.9:	2024-03-14 15:35:42 -07:00
reloc_test_core.c	…
reloc_test_syms.S	…
relocate_kernel.S	…
return_address.c	…
sdei.c	arm64: sdei: abort running SDEI handlers during crash	2023-08-04 17:35:33 +01:00
setup.c	Merge branch 'for-next/stage1-lpa2' into for-next/core	2024-03-07 19:05:29 +00:00
signal.c	arm64 updates for 6.9:	2024-03-14 15:35:42 -07:00
signal32.c	x86/shstk: Add user control-protection fault handler	2023-08-02 15:01:50 -07:00
sigreturn32.S	…
sleep.S	arm64: mm: Handle LVA support as a CPU feature	2024-02-16 12:42:36 +00:00
smccc-call.S	…
smp.c	arm64: Align boot cpucap handling with system cpucap handling	2023-12-13 16:02:01 +00:00
smp_spin_table.c	…
stacktrace.c	Networking changes for 6.9.	2024-03-12 17:44:08 -07:00
suspend.c	arm64/sme: Restore SME registers on exit from suspend	2024-02-20 12:19:15 +00:00
sys.c	…
sys32.c	…
sys_compat.c	arm64: Avoid cpus_have_const_cap() for ARM64_WORKAROUND_1542419	2023-10-16 14:17:06 +01:00
syscall.c	arm64: remove unnecessary ifdefs around is_compat_task()	2024-02-28 18:01:23 +00:00
time.c	…
topology.c	arm64/amu: Use capacity_ref_freq() to set AMU ratio	2023-12-23 15:52:36 +01:00
trace-events-emulation.h	…
traps.c	ARM:	2023-11-02 15:45:15 -10:00
vdso-wrap.S	…
vdso.c	arm64: vdso: Use generic union vdso_data_store	2024-02-20 20:56:00 +01:00
vdso32-wrap.S	…
vmcore_info.c	crash: split vmcoreinfo exporting code out from crash_core.c	2024-02-23 17:48:22 -08:00
vmlinux.lds.S	arm64: head: Move early kernel mapping routines into C code	2024-02-16 12:42:33 +00:00
watchdog_hld.c	…