diff options
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/head.S | 12 | ||||
| -rw-r--r-- | arch/arm/kernel/psci_smp.c | 7 | ||||
| -rw-r--r-- | arch/arm/kernel/sys_oabi-compat.c | 10 | ||||
| -rw-r--r-- | arch/arm/kernel/traps.c | 3 |
4 files changed, 24 insertions, 8 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 1ec35f065617..f22c50d4bd41 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -252,18 +252,23 @@ __create_page_tables: */ add r0, r4, #KERNEL_OFFSET >> (SECTION_SHIFT - PMD_ENTRY_ORDER) ldr r6, =(_end - 1) + + /* For XIP, kernel_sec_start/kernel_sec_end are currently in RO memory */ +#ifndef CONFIG_XIP_KERNEL adr_l r5, kernel_sec_start @ _pa(kernel_sec_start) #if defined CONFIG_CPU_ENDIAN_BE8 || defined CONFIG_CPU_ENDIAN_BE32 str r8, [r5, #4] @ Save physical start of kernel (BE) #else str r8, [r5] @ Save physical start of kernel (LE) #endif +#endif orr r3, r8, r7 @ Add the MMU flags add r6, r4, r6, lsr #(SECTION_SHIFT - PMD_ENTRY_ORDER) 1: str r3, [r0], #1 << PMD_ENTRY_ORDER add r3, r3, #1 << SECTION_SHIFT cmp r0, r6 bls 1b +#ifndef CONFIG_XIP_KERNEL eor r3, r3, r7 @ Remove the MMU flags adr_l r5, kernel_sec_end @ _pa(kernel_sec_end) #if defined CONFIG_CPU_ENDIAN_BE8 || defined CONFIG_CPU_ENDIAN_BE32 @@ -271,8 +276,7 @@ __create_page_tables: #else str r3, [r5] @ Save physical end of kernel (LE) #endif - -#ifdef CONFIG_XIP_KERNEL +#else /* * Map the kernel image separately as it is not located in RAM. */ @@ -407,7 +411,11 @@ ENTRY(secondary_startup) /* * Use the page tables supplied from __cpu_up. */ +#ifdef CONFIG_XIP_KERNEL + ldr r3, =(secondary_data + PLAT_PHYS_OFFSET - PAGE_OFFSET) +#else adr_l r3, secondary_data +#endif mov_l r12, __secondary_switched ldrd r4, r5, [r3, #0] @ get secondary_data.pgdir ARM_BE8(eor r4, r4, r5) @ Swap r5 and r4 in BE: diff --git a/arch/arm/kernel/psci_smp.c b/arch/arm/kernel/psci_smp.c index d4392e177484..3bb0c4dcfc5c 100644 --- a/arch/arm/kernel/psci_smp.c +++ b/arch/arm/kernel/psci_smp.c @@ -45,8 +45,15 @@ extern void secondary_startup(void); static int psci_boot_secondary(unsigned int cpu, struct task_struct *idle) { if (psci_ops.cpu_on) +#ifdef CONFIG_XIP_KERNEL + return psci_ops.cpu_on(cpu_logical_map(cpu), + ((phys_addr_t)(&secondary_startup) + - XIP_VIRT_ADDR(CONFIG_XIP_PHYS_ADDR) + + CONFIG_XIP_PHYS_ADDR)); +#else return psci_ops.cpu_on(cpu_logical_map(cpu), virt_to_idmap(&secondary_startup)); +#endif return -ENODEV; } diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c index f5781ff54a5c..2944721e82a2 100644 --- a/arch/arm/kernel/sys_oabi-compat.c +++ b/arch/arm/kernel/sys_oabi-compat.c @@ -235,12 +235,12 @@ asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg) { void __user *argp = (void __user *)arg; - struct fd f = fdget_raw(fd); + CLASS(fd_raw, f)(fd); struct flock64 flock; - long err = -EBADF; + long err; - if (!fd_file(f)) - goto out; + if (fd_empty(f)) + return -EBADF; switch (cmd) { case F_GETLK64: @@ -271,8 +271,6 @@ asmlinkage long sys_oabi_fcntl64(unsigned int fd, unsigned int cmd, err = sys_fcntl64(fd, cmd, arg); break; } - fdput(f); -out: return err; } diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index 480e307501bb..6ea645939573 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -570,6 +570,7 @@ static int bad_syscall(int n, struct pt_regs *regs) static inline int __do_cache_op(unsigned long start, unsigned long end) { + unsigned int ua_flags; int ret; do { @@ -578,7 +579,9 @@ __do_cache_op(unsigned long start, unsigned long end) if (fatal_signal_pending(current)) return 0; + ua_flags = uaccess_save_and_enable(); ret = flush_icache_user_range(start, start + chunk); + uaccess_restore(ua_flags); if (ret) return ret; |