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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8051f4d16e
If we take an exception we don't expect (e.g. SError), we report this in the bad_mode handler with pr_crit. Depending on the configured log level, we may or may not log additional information in functions called subsequently. Notably, the messages in dump_stack (including the CPU number) are printed with KERN_DEFAULT and may not appear. Some exceptions have an IMPLEMENTATION DEFINED ESR_ELx.ISS encoding, and knowing the CPU number is crucial to correctly decode them. To ensure that this is always possible, we should log the CPU number along with the ESR_ELx value, so we are not reliant on subsequent logs or additional printk configuration options. This patch logs the CPU number in bad_mode such that it is possible for a developer to decode these exceptions, provided access to sufficient documentation. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reported-by: Al Grant <Al.Grant@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Martin <dave.martin@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> |
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| .. | ||
| vdso | ||
| .gitignore | ||
| acpi_parking_protocol.c | ||
| acpi.c | ||
| alternative.c | ||
| arm64ksyms.c | ||
| armv8_deprecated.c | ||
| asm-offsets.c | ||
| cacheinfo.c | ||
| cpu_errata.c | ||
| cpu_ops.c | ||
| cpufeature.c | ||
| cpuidle.c | ||
| cpuinfo.c | ||
| debug-monitors.c | ||
| efi-entry.S | ||
| efi.c | ||
| entry32.S | ||
| entry-fpsimd.S | ||
| entry-ftrace.S | ||
| entry.S | ||
| fpsimd.c | ||
| ftrace.c | ||
| head.S | ||
| hibernate-asm.S | ||
| hibernate.c | ||
| hw_breakpoint.c | ||
| hyp-stub.S | ||
| image.h | ||
| insn.c | ||
| io.c | ||
| irq.c | ||
| jump_label.c | ||
| kaslr.c | ||
| kgdb.c | ||
| kuser32.S | ||
| Makefile | ||
| module-plts.c | ||
| module.c | ||
| module.lds | ||
| paravirt.c | ||
| pci.c | ||
| perf_callchain.c | ||
| perf_event.c | ||
| perf_regs.c | ||
| process.c | ||
| psci.c | ||
| ptrace.c | ||
| return_address.c | ||
| setup.c | ||
| signal32.c | ||
| signal.c | ||
| sleep.S | ||
| smccc-call.S | ||
| smp_spin_table.c | ||
| smp.c | ||
| stacktrace.c | ||
| suspend.c | ||
| sys32.c | ||
| sys_compat.c | ||
| sys.c | ||
| time.c | ||
| topology.c | ||
| trace-events-emulation.h | ||
| traps.c | ||
| vdso.c | ||
| vmlinux.lds.S | ||