diff options
Diffstat (limited to 'arch/arm64/kernel/setup.c')
| -rw-r--r-- | arch/arm64/kernel/setup.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 326c53b7fe0b..30af178c640c 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -183,7 +183,6 @@ static void __init smp_build_mpidr_hash(void) */ if (mpidr_hash_size() > 4 * num_possible_cpus()) pr_warn("Large number of MPIDR hash buckets detected\n"); - __flush_dcache_area(&mpidr_hash, sizeof(struct mpidr_hash)); } static void __init setup_machine_fdt(phys_addr_t dt_phys) @@ -361,6 +360,15 @@ void __init setup_arch(char **cmdline_p) smp_init_cpus(); smp_build_mpidr_hash(); +#ifdef CONFIG_ARM64_SW_TTBR0_PAN + /* + * Make sure init_thread_info.ttbr0 always generates translation + * faults in case uaccess_enable() is inadvertently called by the init + * thread. + */ + init_thread_info.ttbr0 = virt_to_phys(empty_zero_page); +#endif + #ifdef CONFIG_VT #if defined(CONFIG_VGA_CONSOLE) conswitchp = &vga_con; |