Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-21 07:23:06 +00:00
Code Issues Packages Projects Releases Wiki Activity
c88b9b4cde
linux/arch/arm64/kernel
History
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
acpi_numa.c arm64: numa: Don't check node against MAX_NUMNODES 2022-07-19 19:10:28 +01:00
acpi_parking_protocol.c arm64: smp: Remove dedicated wakeup IPI 2023-09-25 17:15:28 +01:00
acpi.c arm64: acpi: Fix possible memory leak of ffh_ctxt 2023-02-24 14:21:49 +00:00
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 cacheinfo: Add arm64 early level initializer implementation 2023-04-13 09:32:33 +01:00
compat_alignment.c arm64: compat: Work around uninitialized variable warning 2023-04-05 17:51:47 +01:00
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
cpu-reset.S arm64: kernel: remove SHF_WRITE|SHF_EXECINSTR from .idmap.text 2023-05-02 12:42:22 +01:00
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 arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step 2023-04-14 13:39:47 +01:00
efi-header.S arm64: efi: Enable BTI codegen and add PE/COFF annotation 2023-04-20 15:43:45 +02:00
efi-rt-wrapper.S arm64: efi: Avoid workqueue to check whether EFI runtime is live 2023-01-16 15:27:31 +01:00
efi.c arm64/mm: new ptep layer to manage contig bit 2024-02-22 15:27:18 -08:00
elfcore.c arm64: mte: Avoid the racy walk of the vma list during core dump 2023-01-05 15:12:12 +00:00
entry-common.c arm64: Unmask Debug + SError in do_notify_resume() 2024-02-20 18:12:13 +00:00
entry-fpsimd.S arm64/sme: Implement context switching for ZT0 2023-01-20 12:23:06 +00:00
entry-ftrace.S arm64: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL 2023-06-20 18:38:37 -04:00
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 arm64: module: mandate MODULE_PLTS 2023-06-06 17:39:05 +01:00
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 arm64: hibernate: remove WARN_ON in save_processor_state 2023-06-21 13:33:49 +01:00
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 arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step 2023-04-14 13:39:47 +01:00
kuser32.S arm64: Update Documentation/arm references 2023-06-12 06:33:48 -06:00
machine_kexec_file.c arm64, crash: wrap crash dumping code into crash related ifdefs 2024-02-23 17:48:23 -08:00
machine_kexec.c arm64, crash: wrap crash dumping code into crash related ifdefs 2024-02-23 17:48:23 -08:00
Makefile - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
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 arm64: paravirt: remove conduit check in has_pv_steal_clock 2022-11-09 18:11:56 +00:00
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 arm64: use XPACLRI to strip PAC 2023-04-13 12:27:11 +01:00
perf_regs.c perf: arm64: Add SVE vector granule register to user regs 2022-09-22 15:06:02 +01:00
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 treewide: Drop function_nocfi 2022-09-26 10:13:14 -07:00
ptrace.c arm64 updates for 6.9: 2024-03-14 15:35:42 -07:00
reloc_test_core.c ARM64: reloc_test: add __init/__exit annotations to module init/exit funcs 2022-09-29 18:04:25 +01:00
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 arm64: compat: Move sigreturn32.S to .rodata section 2022-07-01 12:05:45 +01:00
sleep.S arm64: mm: Handle LVA support as a CPU feature 2024-02-16 12:42:36 +00:00
smccc-call.S
smp_spin_table.c treewide: Drop function_nocfi 2022-09-26 10:13:14 -07:00
smp.c arm64: Align boot cpucap handling with system cpucap handling 2023-12-13 16:02:01 +00:00
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_compat.c arm64: Avoid cpus_have_const_cap() for ARM64_WORKAROUND_1542419 2023-10-16 14:17:06 +01:00
sys.c
sys32.c
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 arm64: enable perf events based hard lockup detector 2023-06-09 17:44:22 -07:00