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4bea3418c7
For the boot, enable_mmu() is called from setup_arch() but we don't call setup_arch() for any of the other cpus. So turn on the non-boot cpu's mmu inside of start_secondary(). I noticed this bug on an SMP board when trying to map I/O memory (smsc911x registers) into the kernel address space. Since the Address Translation bit in MMUCR wasn't set, accessing the virtual address where the smsc911x registers were supposedly mapped actually performed a physical address access. Signed-off-by: Matt Fleming <matt@console-pimps.org> Cc: stable@kernel.org Signed-off-by: Paul Mundt <lethal@linux-sh.org> |
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| .. | ||
| cpu | ||
| vsyscall | ||
| .gitignore | ||
| asm-offsets.c | ||
| cpufreq.c | ||
| crash_dump.c | ||
| debugtraps.S | ||
| disassemble.c | ||
| dma-nommu.c | ||
| dumpstack.c | ||
| dwarf.c | ||
| entry-common.S | ||
| ftrace.c | ||
| head_32.S | ||
| head_64.S | ||
| hw_breakpoint.c | ||
| idle.c | ||
| init_task.c | ||
| io_generic.c | ||
| io_trapped.c | ||
| io.c | ||
| irq_32.c | ||
| irq_64.c | ||
| irq.c | ||
| kgdb.c | ||
| kprobes.c | ||
| localtimer.c | ||
| machine_kexec.c | ||
| machvec.c | ||
| Makefile | ||
| module.c | ||
| nmi_debug.c | ||
| perf_callchain.c | ||
| perf_event.c | ||
| process_32.c | ||
| process_64.c | ||
| process.c | ||
| ptrace_32.c | ||
| ptrace_64.c | ||
| reboot.c | ||
| relocate_kernel.S | ||
| return_address.c | ||
| setup.c | ||
| sh_bios.c | ||
| sh_ksyms_32.c | ||
| sh_ksyms_64.c | ||
| signal_32.c | ||
| signal_64.c | ||
| smp.c | ||
| stacktrace.c | ||
| swsusp.c | ||
| sys_sh32.c | ||
| sys_sh64.c | ||
| sys_sh.c | ||
| syscalls_32.S | ||
| syscalls_64.S | ||
| time.c | ||
| topology.c | ||
| traps_32.c | ||
| traps_64.c | ||
| traps.c | ||
| unwinder.c | ||
| vmlinux.lds.S | ||