diff options
Diffstat (limited to 'arch/powerpc')
25 files changed, 173 insertions, 532 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index c32a181a7cbb..9c0ee1859323 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -13,12 +13,6 @@ config 64BIT bool default y if PPC64 -config ARCH_PHYS_ADDR_T_64BIT - def_bool PPC64 || PHYS_64BIT - -config ARCH_DMA_ADDR_T_64BIT - def_bool ARCH_PHYS_ADDR_T_64BIT - config MMU bool default y @@ -187,7 +181,6 @@ config PPC select HAVE_CONTEXT_TRACKING if PPC64 select HAVE_DEBUG_KMEMLEAK select HAVE_DEBUG_STACKOVERFLOW - select HAVE_DMA_API_DEBUG select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL select HAVE_EBPF_JIT if PPC64 @@ -205,6 +198,7 @@ config PPC select HAVE_KPROBES select HAVE_KPROBES_ON_FTRACE select HAVE_KRETPROBES + select HAVE_LD_DEAD_CODE_DATA_ELIMINATION select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP @@ -223,9 +217,11 @@ config PPC select HAVE_SYSCALL_TRACEPOINTS select HAVE_VIRT_CPU_ACCOUNTING select HAVE_IRQ_TIME_ACCOUNTING + select IOMMU_HELPER if PPC64 select IRQ_DOMAIN select IRQ_FORCED_THREADING select MODULES_USE_ELF_RELA + select NEED_SG_DMA_LENGTH select NO_BOOTMEM select OF select OF_EARLY_FLATTREE @@ -478,19 +474,6 @@ config MPROFILE_KERNEL depends on PPC64 && CPU_LITTLE_ENDIAN def_bool !DISABLE_MPROFILE_KERNEL -config IOMMU_HELPER - def_bool PPC64 - -config SWIOTLB - bool "SWIOTLB support" - default n - select IOMMU_HELPER - ---help--- - Support for IO bounce buffering for systems without an IOMMU. - This allows us to DMA to the full physical address space on - platforms where the size of a physical address is larger - than the bus address. Not all platforms support this. - config HOTPLUG_CPU bool "Support for enabling/disabling CPUs" depends on SMP && (PPC_PSERIES || \ @@ -883,7 +866,7 @@ config PPC_MEM_KEYS page-based protections, but without requiring modification of the page tables when an application changes protection domains. - For details, see Documentation/vm/protection-keys.txt + For details, see Documentation/vm/protection-keys.rst If unsure, say y. @@ -913,9 +896,6 @@ config ZONE_DMA config NEED_DMA_MAP_STATE def_bool (PPC64 || NOT_COHERENT_CACHE) -config NEED_SG_DMA_LENGTH - def_bool y - config GENERIC_ISA_DMA bool depends on ISA_DMA_API diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h index 62168e1158f1..85c8af2bb272 100644 --- a/arch/powerpc/include/asm/compat.h +++ b/arch/powerpc/include/asm/compat.h @@ -17,7 +17,6 @@ typedef u32 compat_size_t; typedef s32 compat_ssize_t; -typedef s32 compat_time_t; typedef s32 compat_clock_t; typedef s32 compat_pid_t; typedef u32 __compat_uid_t; @@ -45,16 +44,6 @@ typedef u32 compat_ulong_t; typedef u64 compat_u64; typedef u32 compat_uptr_t; -struct compat_timespec { - compat_time_t tv_sec; - s32 tv_nsec; -}; - -struct compat_timeval { - compat_time_t tv_sec; - s32 tv_usec; -}; - struct compat_stat { compat_dev_t st_dev; compat_ino_t st_ino; @@ -173,10 +162,10 @@ struct compat_ipc64_perm { struct compat_semid64_ds { struct compat_ipc64_perm sem_perm; - unsigned int __unused1; - compat_time_t sem_otime; - unsigned int __unused2; - compat_time_t sem_ctime; + unsigned int sem_otime_high; + unsigned int sem_otime; + unsigned int sem_ctime_high; + unsigned int sem_ctime; compat_ulong_t sem_nsems; compat_ulong_t __unused3; compat_ulong_t __unused4; @@ -184,12 +173,12 @@ struct compat_semid64_ds { struct compat_msqid64_ds { struct compat_ipc64_perm msg_perm; - unsigned int __unused1; - compat_time_t msg_stime; - unsigned int __unused2; - compat_time_t msg_rtime; - unsigned int __unused3; - compat_time_t msg_ctime; + unsigned int msg_stime_high; + unsigned int msg_stime; + unsigned int msg_rtime_high; + unsigned int msg_rtime; + unsigned int msg_ctime_high; + unsigned int msg_ctime; compat_ulong_t msg_cbytes; compat_ulong_t msg_qnum; compat_ulong_t msg_qbytes; @@ -201,12 +190,12 @@ struct compat_msqid64_ds { struct compat_shmid64_ds { struct compat_ipc64_perm shm_perm; - unsigned int __unused1; - compat_time_t shm_atime; - unsigned int __unused2; - compat_time_t shm_dtime; - unsigned int __unused3; - compat_time_t shm_ctime; + unsigned int shm_atime_high; + unsigned int shm_atime; + unsigned int shm_dtime_high; + unsigned int shm_dtime; + unsigned int shm_ctime_high; + unsigned int shm_ctime; unsigned int __unused4; compat_size_t shm_segsz; compat_pid_t shm_cpid; diff --git a/arch/powerpc/include/asm/hardirq.h b/arch/powerpc/include/asm/hardirq.h index 5986d473722b..383f628acbf8 100644 --- a/arch/powerpc/include/asm/hardirq.h +++ b/arch/powerpc/include/asm/hardirq.h @@ -25,15 +25,8 @@ typedef struct { DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat); #define __ARCH_IRQ_STAT - -#define local_softirq_pending() __this_cpu_read(irq_stat.__softirq_pending) - -#define __ARCH_SET_SOFTIRQ_PENDING #define __ARCH_IRQ_EXIT_IRQS_DISABLED -#define set_softirq_pending(x) __this_cpu_write(irq_stat.__softirq_pending, (x)) -#define or_softirq_pending(x) __this_cpu_or(irq_stat.__softirq_pending, (x)) - static inline void ack_bad_irq(unsigned int irq) { printk(KERN_CRIT "unexpected IRQ trap at vector %02x\n", irq); diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 2e2dddab5d65..662c8347d699 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -279,6 +279,7 @@ #define H_GET_MPP_X 0x314 #define H_SET_MODE 0x31C #define H_CLEAR_HPT 0x358 +#define H_REQUEST_VMC 0x360 #define H_RESIZE_HPT_PREPARE 0x36C #define H_RESIZE_HPT_COMMIT 0x370 #define H_REGISTER_PROC_TBL 0x37C diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h index 401c62aad5e4..2af9ded80540 100644 --- a/arch/powerpc/include/asm/pci.h +++ b/arch/powerpc/include/asm/pci.h @@ -92,24 +92,6 @@ extern int pci_mmap_legacy_page_range(struct pci_bus *bus, #define HAVE_PCI_LEGACY 1 -#ifdef CONFIG_PPC64 - -/* The PCI address space does not equal the physical memory address - * space (we have an IOMMU). The IDE and SCSI device layers use - * this boolean for bounce buffer decisions. - */ -#define PCI_DMA_BUS_IS_PHYS (0) - -#else /* 32-bit */ - -/* The PCI address space does equal the physical memory - * address space (no IOMMU). The IDE and SCSI device layers use - * this boolean for bounce buffer decisions. - */ -#define PCI_DMA_BUS_IS_PHYS (1) - -#endif /* CONFIG_PPC64 */ - extern void pcibios_claim_one_bus(struct pci_bus *b); extern void pcibios_finish_adding_to_bus(struct pci_bus *bus); diff --git a/arch/powerpc/include/uapi/asm/msgbuf.h b/arch/powerpc/include/uapi/asm/msgbuf.h index 65beb0942500..2b1b37797a47 100644 --- a/arch/powerpc/include/uapi/asm/msgbuf.h +++ b/arch/powerpc/include/uapi/asm/msgbuf.h @@ -10,18 +10,18 @@ struct msqid64_ds { struct ipc64_perm msg_perm; -#ifndef __powerpc64__ - unsigned int __unused1; -#endif +#ifdef __powerpc64__ __kernel_time_t msg_stime; /* last msgsnd time */ -#ifndef __powerpc64__ - unsigned int __unused2; -#endif __kernel_time_t msg_rtime; /* last msgrcv time */ -#ifndef __powerpc64__ - unsigned int __unused3; -#endif __kernel_time_t msg_ctime; /* last change time */ +#else + unsigned long msg_stime_high; + unsigned long msg_stime; /* last msgsnd time */ + unsigned long msg_rtime_high; + unsigned long msg_rtime; /* last msgrcv time */ + unsigned long msg_ctime_high; + unsigned long msg_ctime; /* last change time */ +#endif unsigned long msg_cbytes; /* current number of bytes on queue */ unsigned long msg_qnum; /* number of messages in queue */ unsigned long msg_qbytes; /* max number of bytes on queue */ diff --git a/arch/powerpc/include/uapi/asm/sembuf.h b/arch/powerpc/include/uapi/asm/sembuf.h index 8f393d60f02d..3f60946f77e3 100644 --- a/arch/powerpc/include/uapi/asm/sembuf.h +++ b/arch/powerpc/include/uapi/asm/sembuf.h @@ -15,20 +15,20 @@ * between kernel and user space. * * Pad space is left for: - * - 64-bit time_t to solve y2038 problem - * - 2 miscellaneous 32-bit values + * - 2 miscellaneous 32/64-bit values */ struct semid64_ds { struct ipc64_perm sem_perm; /* permissions .. see ipc.h */ #ifndef __powerpc64__ - unsigned long __unused1; -#endif + unsigned long sem_otime_high; + unsigned long sem_otime; /* last semop time */ + unsigned long sem_ctime_high; + unsigned long sem_ctime; /* last change time */ +#else __kernel_time_t sem_otime; /* last semop time */ -#ifndef __powerpc64__ - unsigned long __unused2; -#endif __kernel_time_t sem_ctime; /* last change time */ +#endif unsigned long sem_nsems; /* no. of semaphores in array */ unsigned long __unused3; unsigned long __unused4; diff --git a/arch/powerpc/include/uapi/asm/shmbuf.h b/arch/powerpc/include/uapi/asm/shmbuf.h index deb1c3e503d3..b591c4d7e4c5 100644 --- a/arch/powerpc/include/uapi/asm/shmbuf.h +++ b/arch/powerpc/include/uapi/asm/shmbuf.h @@ -16,25 +16,22 @@ * between kernel and user space. * * Pad space is left for: - * - 64-bit time_t to solve y2038 problem * - 2 miscellaneous 32-bit values */ struct shmid64_ds { struct ipc64_perm shm_perm; /* operation perms */ -#ifndef __powerpc64__ - unsigned long __unused1; -#endif +#ifdef __powerpc64__ __kernel_time_t shm_atime; /* last attach time */ -#ifndef __powerpc64__ - unsigned long __unused2; -#endif __kernel_time_t shm_dtime; /* last detach time */ -#ifndef __powerpc64__ - unsigned long __unused3; -#endif __kernel_time_t shm_ctime; /* last change time */ -#ifndef __powerpc64__ +#else + unsigned long shm_atime_high; + unsigned long shm_atime; /* last attach time */ + unsigned long shm_dtime_high; + unsigned long shm_dtime; /* last detach time */ + unsigned long shm_ctime_high; + unsigned long shm_ctime; /* last change time */ unsigned long __unused4; #endif size_t shm_segsz; /* size of segment (bytes) */ diff --git a/arch/powerpc/include/uapi/asm/siginfo.h b/arch/powerpc/include/uapi/asm/siginfo.h index 9f142451a01f..1d51d9b88221 100644 --- a/arch/powerpc/include/uapi/asm/siginfo.h +++ b/arch/powerpc/include/uapi/asm/siginfo.h @@ -15,19 +15,4 @@ #include <asm-generic/siginfo.h> -/* - * SIGFPE si_codes - */ -#ifdef __KERNEL__ -#define FPE_FIXME 0 /* Broken dup of SI_USER */ -#endif /* __KERNEL__ */ - -/* - * SIGTRAP si_codes - */ -#ifdef __KERNEL__ -#define TRAP_FIXME 0 /* Broken dup of SI_USER */ -#endif /* __KERNEL__ */ - - #endif /* _ASM_POWERPC_SIGINFO_H */ diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 373dc1d6ef44..8817c5a6bcc2 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -13,6 +13,7 @@ * 2 of the License, or (at your option) any later version. */ +#include <linux/compat.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/kernel.h> @@ -42,7 +43,6 @@ #include <asm/paca.h> #include <asm/lppaca.h> #include <asm/cache.h> -#include <asm/compat.h> #include <asm/mmu.h> #include <asm/hvcall.h> #include <asm/xics.h> diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c index da20569de9d4..138157deeadf 100644 --- a/arch/powerpc/kernel/dma.c +++ b/arch/powerpc/kernel/dma.c @@ -309,8 +309,6 @@ int dma_set_coherent_mask(struct device *dev, u64 mask) } EXPORT_SYMBOL(dma_set_coherent_mask); -#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) - int dma_set_mask(struct device *dev, u64 dma_mask) { if (ppc_md.dma_set_mask) @@ -361,7 +359,6 @@ EXPORT_SYMBOL_GPL(dma_get_required_mask); static int __init dma_init(void) { - dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES); #ifdef CONFIG_PCI dma_debug_add_bus(&pci_bus_type); #endif diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index bc640e4c5ca5..90bb39b1a23c 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -1775,18 +1775,6 @@ static int proc_eeh_show(struct seq_file *m, void *v) return 0; } -static int proc_eeh_open(struct inode *inode, struct file *file) -{ - return single_open(file, proc_eeh_show, NULL); -} - -static const struct file_operations proc_eeh_operations = { - .open = proc_eeh_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - #ifdef CONFIG_DEBUG_FS static int eeh_enable_dbgfs_set(void *data, u64 val) { @@ -1828,7 +1816,7 @@ DEFINE_SIMPLE_ATTRIBUTE(eeh_freeze_dbgfs_ops, eeh_freeze_dbgfs_get, static int __init eeh_init_proc(void) { if (machine_is(pseries) || machine_is(powernv)) { - proc_create("powerpc/eeh", 0, NULL, &proc_eeh_operations); + proc_create_single("powerpc/eeh", 0, NULL, proc_eeh_show); #ifdef CONFIG_DEBUG_FS debugfs_create_file("eeh_enable", 0600, powerpc_debugfs_root, NULL, diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 1237f13fed51..26ea9793d290 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -632,6 +632,7 @@ void do_break (struct pt_regs *regs, unsigned long address, hw_breakpoint_disable(); /* Deliver the signal to userspace */ + clear_siginfo(&info); info.si_signo = SIGTRAP; info.si_errno = 0; info.si_code = TRAP_HWBKPT; diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c index fb070d8cad07..d49063d0baa4 100644 --- a/arch/powerpc/kernel/rtas-proc.c +++ b/arch/powerpc/kernel/rtas-proc.c @@ -154,18 +154,6 @@ static ssize_t ppc_rtas_tone_volume_write(struct file *file, static int ppc_rtas_tone_volume_show(struct seq_file *m, void *v); static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v); -static int sensors_open(struct inode *inode, struct file *file) -{ - return single_open(file, ppc_rtas_sensors_show, NULL); -} - -static const struct file_operations ppc_rtas_sensors_operations = { - .open = sensors_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int poweron_open(struct inode *inode, struct file *file) { return single_open(file, ppc_rtas_poweron_show, NULL); @@ -231,18 +219,6 @@ static const struct file_operations ppc_rtas_tone_volume_operations = { .release = single_release, }; -static int rmo_buf_open(struct inode *inode, struct file *file) -{ - return single_open(file, ppc_rtas_rmo_buf_show, NULL); -} - -static const struct file_operations ppc_rtas_rmo_buf_ops = { - .open = rmo_buf_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int ppc_rtas_find_all_sensors(void); static void ppc_rtas_process_sensor(struct seq_file *m, struct individual_sensor *s, int state, int error, const char *loc); @@ -267,14 +243,14 @@ static int __init proc_rtas_init(void) &ppc_rtas_clock_operations); proc_create("powerpc/rtas/poweron", 0644, NULL, &ppc_rtas_poweron_operations); - proc_create("powerpc/rtas/sensors", 0444, NULL, - &ppc_rtas_sensors_operations); + proc_create_single("powerpc/rtas/sensors", 0444, NULL, + ppc_rtas_sensors_show); proc_create("powerpc/rtas/frequency", 0644, NULL, &ppc_rtas_tone_freq_operations); proc_create("powerpc/rtas/volume", 0644, NULL, &ppc_rtas_tone_volume_operations); - proc_create("powerpc/rtas/rmo_buffer", 0400, NULL, - &ppc_rtas_rmo_buf_ops); + proc_create_single("powerpc/rtas/rmo_buffer", 0400, NULL, + ppc_rtas_rmo_buf_show); return 0; } diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 0904492e7032..0e17dcb48720 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -296,7 +296,6 @@ NOKPROBE_SYMBOL(die); void user_single_step_siginfo(struct task_struct *tsk, struct pt_regs *regs, siginfo_t *info) { - memset(info, 0, sizeof(*info)); info->si_signo = SIGTRAP; info->si_code = TRAP_TRACE; info->si_addr = (void __user *)regs->nip; @@ -334,7 +333,7 @@ void _exception_pkey(int signr, struct pt_regs *regs, int code, */ thread_pkey_regs_save(¤t->thread); - memset(&info, 0, sizeof(info)); + clear_siginfo(&info); info.si_signo = signr; info.si_code = code; info.si_addr = (void __user *) addr; @@ -970,7 +969,7 @@ void unknown_exception(struct pt_regs *regs) printk("Bad trap at PC: %lx, SR: %lx, vector=%lx\n", regs->nip, regs->msr, regs->trap); - _exception(SIGTRAP, regs, TRAP_FIXME, 0); + _exception(SIGTRAP, regs, TRAP_UNK, 0); exception_exit(prev_state); } @@ -992,7 +991,7 @@ bail: void RunModeException(struct pt_regs *regs) { - _exception(SIGTRAP, regs, TRAP_FIXME, 0); + _exception(SIGTRAP, regs, TRAP_UNK, 0); } void single_step_exception(struct pt_regs *regs) @@ -1032,7 +1031,7 @@ static void emulate_single_step(struct pt_regs *regs) static inline int __parse_fpscr(unsigned long fpscr) { - int ret = FPE_FIXME; + int ret = FPE_FLTUNK; /* Invalid operation */ if ((fpscr & FPSCR_VE) && (fpscr & FPSCR_VX)) @@ -1973,7 +1972,7 @@ void SPEFloatingPointException(struct pt_regs *regs) extern int do_spe_mathemu(struct pt_regs *regs); unsigned long spefscr; int fpexc_mode; - int code = FPE_FIXME; + int code = FPE_FLTUNK; int err; flush_spe_to_thread(current); @@ -2042,7 +2041,7 @@ void SPEFloatingPointRoundException(struct pt_regs *regs) printk(KERN_ERR "unrecognized spe instruction " "in %s at %lx\n", current->comm, regs->nip); } else { - _exception(SIGFPE, regs, FPE_FIXME, regs->nip); + _exception(SIGFPE, regs, FPE_FLTUNK, regs->nip); return; } } diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index b8d82678f8b4..dd10e6f1d1b7 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -89,7 +89,7 @@ SECTIONS */ .text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) { #ifdef CONFIG_LD_HEAD_STUB_CATCH - *(.linker_stub_catch); + KEEP(*(.linker_stub_catch)); . = . ; #endif @@ -98,7 +98,7 @@ SECTIONS ALIGN_FUNCTION(); #endif /* careful! __ftr_alt_* sections need to be close to .text */ - *(.text.hot .text .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text); + *(.text.hot TEXT_MAIN .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text); SCHED_TEXT CPUIDLE_TEXT LOCK_TEXT @@ -184,10 +184,10 @@ SECTIONS .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { INIT_DATA __vtop_table_begin = .; - *(.vtop_fixup); + KEEP(*(.vtop_fixup)); __vtop_table_end = .; __ptov_table_begin = .; - *(.ptov_fixup); + KEEP(*(.ptov_fixup)); __ptov_table_end = .; } @@ -208,26 +208,26 @@ SECTIONS . = ALIGN(8); __ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) { __start___ftr_fixup = .; - *(__ftr_fixup) + KEEP(*(__ftr_fixup)) __stop___ftr_fixup = .; } . = ALIGN(8); __mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) { __start___mmu_ftr_fixup = .; - *(__mmu_ftr_fixup) + KEEP(*(__mmu_ftr_fixup)) __stop___mmu_ftr_fixup = .; } . = ALIGN(8); __lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) { __start___lwsync_fixup = .; - *(__lwsync_fixup) + KEEP(*(__lwsync_fixup)) __stop___lwsync_fixup = .; } #ifdef CONFIG_PPC64 . = ALIGN(8); __fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) { __start___fw_ftr_fixup = .; - *(__fw_ftr_fixup) + KEEP(*(__fw_ftr_fixup)) __stop___fw_ftr_fixup = .; } #endif @@ -240,7 +240,7 @@ SECTIONS . = ALIGN(8); .machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) { __machine_desc_start = . ; - *(.machine.desc) + KEEP(*(.machine.desc)) __machine_desc_end = . ; } #ifdef CONFIG_RELOCATABLE @@ -288,7 +288,7 @@ SECTIONS .data : AT(ADDR(.data) - LOAD_OFFSET) { DATA_DATA *(.data.rel*) - *(.sdata) + *(SDATA_MAIN) *(.sdata2) *(.got.plt) *(.got) *(.plt) @@ -303,7 +303,7 @@ SECTIONS .opd : AT(ADDR(.opd) - LOAD_OFFSET) { __start_opd = .; - *(.opd) + KEEP(*(.opd)) __end_opd = .; } diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index c01d627e687a..ef268d5d9db7 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -168,6 +168,7 @@ static int do_sigbus(struct pt_regs *regs, unsigned long address, return SIGBUS; current->thread.trap_nr = BUS_ADRERR; + clear_siginfo(&info); info.si_signo = SIGBUS; info.si_errno = 0; info.si_code = BUS_ADRERR; diff --git a/arch/powerpc/net/Makefile b/arch/powerpc/net/Makefile index 02d369ca6a53..809f019d3cba 100644 --- a/arch/powerpc/net/Makefile +++ b/arch/powerpc/net/Makefile @@ -3,7 +3,7 @@ # Arch-specific network modules # ifeq ($(CONFIG_PPC64),y) -obj-$(CONFIG_BPF_JIT) += bpf_jit_asm64.o bpf_jit_comp64.o +obj-$(CONFIG_BPF_JIT) += bpf_jit_comp64.o else obj-$(CONFIG_BPF_JIT) += bpf_jit_asm.o bpf_jit_comp.o endif diff --git a/arch/powerpc/net/bpf_jit64.h b/arch/powerpc/net/bpf_jit64.h index 8bdef7ed28a8..3609be4692b3 100644 --- a/arch/powerpc/net/bpf_jit64.h +++ b/arch/powerpc/net/bpf_jit64.h @@ -20,7 +20,7 @@ * with our redzone usage. * * [ prev sp ] <------------- - * [ nv gpr save area ] 8*8 | + * [ nv gpr save area ] 6*8 | * [ tail_call_cnt ] 8 | * [ local_tmp_var ] 8 | * fp (r31) --> [ ebpf stack space ] upto 512 | @@ -28,8 +28,8 @@ * sp (r1) ---> [ stack pointer ] -------------- */ -/* for gpr non volatile registers BPG_REG_6 to 10, plus skb cache registers */ -#define BPF_PPC_STACK_SAVE (8*8) +/* for gpr non volatile registers BPG_REG_6 to 10 */ +#define BPF_PPC_STACK_SAVE (6*8) /* for bpf JIT code internal usage */ #define BPF_PPC_STACK_LOCALS 16 /* stack frame excluding BPF stack, ensure this is quadword aligned */ @@ -39,10 +39,8 @@ #ifndef __ASSEMBLY__ /* BPF register usage */ -#define SKB_HLEN_REG (MAX_BPF_JIT_REG + 0) -#define SKB_DATA_REG (MAX_BPF_JIT_REG + 1) -#define TMP_REG_1 (MAX_BPF_JIT_REG + 2) -#define TMP_REG_2 (MAX_BPF_JIT_REG + 3) +#define TMP_REG_1 (MAX_BPF_JIT_REG + 0) +#define TMP_REG_2 (MAX_BPF_JIT_REG + 1) /* BPF to ppc register mappings */ static const int b2p[] = { @@ -63,40 +61,23 @@ static const int b2p[] = { [BPF_REG_FP] = 31, /* eBPF jit internal registers */ [BPF_REG_AX] = 2, - [SKB_HLEN_REG] = 25, - [SKB_DATA_REG] = 26, [TMP_REG_1] = 9, [TMP_REG_2] = 10 }; -/* PPC NVR range -- update this if we ever use NVRs below r24 */ -#define BPF_PPC_NVR_MIN 24 - -/* Assembly helpers */ -#define DECLARE_LOAD_FUNC(func) u64 func(u64 r3, u64 r4); \ - u64 func##_negative_offset(u64 r3, u64 r4); \ - u64 func##_positive_offset(u64 r3, u64 r4); - -DECLARE_LOAD_FUNC(sk_load_word); -DECLARE_LOAD_FUNC(sk_load_half); -DECLARE_LOAD_FUNC(sk_load_byte); - -#define CHOOSE_LOAD_FUNC(imm, func) \ - (imm < 0 ? \ - (imm >= SKF_LL_OFF ? func##_negative_offset : func) : \ - func##_positive_offset) +/* PPC NVR range -- update this if we ever use NVRs below r27 */ +#define BPF_PPC_NVR_MIN 27 #define SEEN_FUNC 0x1000 /* might call external helpers */ #define SEEN_STACK 0x2000 /* uses BPF stack */ -#define SEEN_SKB 0x4000 /* uses sk_buff */ -#define SEEN_TAILCALL 0x8000 /* uses tail calls */ +#define SEEN_TAILCALL 0x4000 /* uses tail calls */ struct codegen_context { /* * This is used to track register usage as well * as calls to external helpers. * - register usage is tracked with corresponding - * bits (r3-r10 and r25-r31) + * bits (r3-r10 and r27-r31) * - rest of the bits can be used to track other * things -- for now, we use bits 16 to 23 * encoded in SEEN_* macros above diff --git a/arch/powerpc/net/bpf_jit_asm64.S b/arch/powerpc/net/bpf_jit_asm64.S deleted file mode 100644 index 7e4c51430b84..000000000000 --- a/arch/powerpc/net/bpf_jit_asm64.S +++ /dev/null @@ -1,180 +0,0 @@ -/* - * bpf_jit_asm64.S: Packet/header access helper functions - * for PPC64 BPF compiler. - * - * Copyright 2016, Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> - * IBM Corporation - * - * Based on bpf_jit_asm.S by Matt Evans - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; version 2 - * of the License. - */ - -#include <asm/ppc_asm.h> -#include <asm/ptrace.h> -#include "bpf_jit64.h" - -/* - * All of these routines are called directly from generated code, - * with the below register usage: - * r27 skb pointer (ctx) - * r25 skb header length - * r26 skb->data pointer - * r4 offset - * - * Result is passed back in: - * r8 data read in host endian format (accumulator) - * - * r9 is used as a temporary register - */ - -#define r_skb r27 -#define r_hlen r25 -#define r_data r26 -#define r_off r4 -#define r_val r8 -#define r_tmp r9 - -_GLOBAL_TOC(sk_load_word) - cmpdi r_off, 0 - blt bpf_slow_path_word_neg - b sk_load_word_positive_offset - -_GLOBAL_TOC(sk_load_word_positive_offset) - /* Are we accessing past headlen? */ - subi r_tmp, r_hlen, 4 - cmpd r_tmp, r_off - blt bpf_slow_path_word - /* Nope, just hitting the header. cr0 here is eq or gt! */ - LWZX_BE r_val, r_data, r_off - blr /* Return success, cr0 != LT */ - -_GLOBAL_TOC(sk_load_half) - cmpdi r_off, 0 - blt bpf_slow_path_half_neg - b sk_load_half_positive_offset - -_GLOBAL_TOC(sk_load_half_positive_offset) - subi r_tmp, r_hlen, 2 - cmpd r_tmp, r_off - blt bpf_slow_path_half - LHZX_BE r_val, r_data, r_off - blr - -_GLOBAL_TOC(sk_load_byte) - cmpdi r_off, 0 - blt bpf_slow_path_byte_neg - b sk_load_byte_positive_offset - -_GLOBAL_TOC(sk_load_byte_positive_offset) - cmpd r_hlen, r_off - ble bpf_slow_path_byte - lbzx r_val, r_data, r_off - blr - -/* - * Call out to skb_copy_bits: - * Allocate a new stack frame here to remain ABI-compliant in - * stashing LR. - */ -#define bpf_slow_path_common(SIZE) \ - mflr r0; \ - std r0, PPC_LR_STKOFF(r1); \ - stdu r1, -(STACK_FRAME_MIN_SIZE + BPF_PPC_STACK_LOCALS)(r1); \ - mr r3, r_skb; \ - /* r4 = r_off as passed */ \ - addi r5, r1, STACK_FRAME_MIN_SIZE; \ - li r6, SIZE; \ - bl skb_copy_bits; \ - nop; \ - /* save r5 */ \ - addi r5, r1, STACK_FRAME_MIN_SIZE; \ - /* r3 = 0 on success */ \ - addi r1, r1, STACK_FRAME_MIN_SIZE + BPF_PPC_STACK_LOCALS; \ - ld r0, PPC_LR_STKOFF(r1); \ - mtlr r0; \ - cmpdi r3, 0; \ - blt bpf_error; /* cr0 = LT */ - -bpf_slow_path_word: - bpf_slow_path_common(4) - /* Data value is on stack, and cr0 != LT */ - LWZX_BE r_val, 0, r5 - blr - -bpf_slow_path_half: - bpf_slow_path_common(2) - LHZX_BE r_val, 0, r5 - blr - -bpf_slow_path_byte: - bpf_slow_path_common(1) - lbzx r_val, 0, r5 - blr - -/* - * Call out to bpf_internal_load_pointer_neg_helper - */ -#define sk_negative_common(SIZE) \ - mflr r0; \ - std r0, PPC_LR_STKOFF(r1); \ - stdu r1, -STACK_FRAME_MIN_SIZE(r1); \ - mr r3, r_skb; \ - /* r4 = r_off, as passed */ \ - li r5, SIZE; \ - bl bpf_internal_load_pointer_neg_helper; \ - nop; \ - addi r1, r1, STACK_FRAME_MIN_SIZE; \ - ld r0, PPC_LR_STKOFF(r1); \ - mtlr r0; \ - /* R3 != 0 on success */ \ - cmpldi r3, 0; \ - beq bpf_error_slow; /* cr0 = EQ */ - -bpf_slow_path_word_neg: - lis r_tmp, -32 /* SKF_LL_OFF */ - cmpd r_off, r_tmp /* addr < SKF_* */ - blt bpf_error /* cr0 = LT */ - b sk_load_word_negative_offset - -_GLOBAL_TOC(sk_load_word_negative_offset) - sk_negative_common(4) - LWZX_BE r_val, 0, r3 - blr - -bpf_slow_path_half_neg: - lis r_tmp, -32 /* SKF_LL_OFF */ - cmpd r_off, r_tmp /* addr < SKF_* */ - blt bpf_error /* cr0 = LT */ - b sk_load_half_negative_offset - -_GLOBAL_TOC(sk_load_half_negative_offset) - sk_negative_common(2) - LHZX_BE r_val, 0, r3 - blr - -bpf_slow_path_byte_neg: - lis r_tmp, -32 /* SKF_LL_OFF */ - cmpd r_off, r_tmp /* addr < SKF_* */ - blt bpf_error /* cr0 = LT */ - b sk_load_byte_negative_offset - -_GLOBAL_TOC(sk_load_byte_negative_offset) - sk_negative_common(1) - lbzx r_val, 0, r3 - blr - -bpf_error_slow: - /* fabricate a cr0 = lt */ - li r_tmp, -1 - cmpdi r_tmp, 0 -bpf_error: - /* - * Entered with cr0 = lt - * Generated code will 'blt epilogue', returning 0. - */ - li r_val, 0 - blr diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c index 0ef3d9580e98..f1c95779843b 100644 --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -59,7 +59,7 @@ static inline bool bpf_has_stack_frame(struct codegen_context *ctx) * [ prev sp ] <------------- * [ ... ] | * sp (r1) ---> [ stack pointer ] -------------- - * [ nv gpr save area ] 8*8 + * [ nv gpr save area ] 6*8 * [ tail_call_cnt ] 8 * [ local_tmp_var ] 8 * [ unused red zone ] 208 bytes protected @@ -88,21 +88,6 @@ static int bpf_jit_stack_offsetof(struct codegen_context *ctx, int reg) BUG(); } -static void bpf_jit_emit_skb_loads(u32 *image, struct codegen_context *ctx) -{ - /* - * Load skb->len and skb->data_len - * r3 points to skb - */ - PPC_LWZ(b2p[SKB_HLEN_REG], 3, offsetof(struct sk_buff, len)); - PPC_LWZ(b2p[TMP_REG_1], 3, offsetof(struct sk_buff, data_len)); - /* header_len = len - data_len */ - PPC_SUB(b2p[SKB_HLEN_REG], b2p[SKB_HLEN_REG], b2p[TMP_REG_1]); - - /* skb->data pointer */ - PPC_BPF_LL(b2p[SKB_DATA_REG], 3, offsetof(struct sk_buff, data)); -} - static void bpf_jit_build_prologue(u32 *image, struct codegen_context *ctx) { int i; @@ -145,18 +130,6 @@ static void bpf_jit_build_prologue(u32 *image, struct codegen_context *ctx) if (bpf_is_seen_register(ctx, i)) PPC_BPF_STL(b2p[i], 1, bpf_jit_stack_offsetof(ctx, b2p[i])); - /* - * Save additional non-volatile regs if we cache skb - * Also, setup skb data - */ - if (ctx->seen & SEEN_SKB) { - PPC_BPF_STL(b2p[SKB_HLEN_REG], 1, - bpf_jit_stack_offsetof(ctx, b2p[SKB_HLEN_REG])); - PPC_BPF_STL(b2p[SKB_DATA_REG], 1, - bpf_jit_stack_offsetof(ctx, b2p[SKB_DATA_REG])); - bpf_jit_emit_skb_loads(image, ctx); - } - /* Setup frame pointer to point to the bpf stack area */ if (bpf_is_seen_register(ctx, BPF_REG_FP)) PPC_ADDI(b2p[BPF_REG_FP], 1, @@ -172,14 +145,6 @@ static void bpf_jit_emit_common_epilogue(u32 *image, struct codegen_context *ctx if (bpf_is_seen_register(ctx, i)) PPC_BPF_LL(b2p[i], 1, bpf_jit_stack_offsetof(ctx, b2p[i])); - /* Restore non-volatile registers used for skb cache */ - if (ctx->seen & SEEN_SKB) { - PPC_BPF_LL(b2p[SKB_HLEN_REG], 1, - bpf_jit_stack_offsetof(ctx, b2p[SKB_HLEN_REG])); - PPC_BPF_LL(b2p[SKB_DATA_REG], 1, - bpf_jit_stack_offsetof(ctx, b2p[SKB_DATA_REG])); - } - /* Tear down our stack frame */ if (bpf_has_stack_frame(ctx)) { PPC_ADDI(1, 1, BPF_PPC_STACKFRAME + ctx->stack_size); @@ -202,25 +167,37 @@ static void bpf_jit_build_epilogue(u32 *image, struct codegen_context *ctx) static void bpf_jit_emit_func_call(u32 *image, struct codegen_context *ctx, u64 func) { + unsigned int i, ctx_idx = ctx->idx; + + /* Load function address into r12 */ + PPC_LI64(12, func); + + /* For bpf-to-bpf function calls, the callee's address is unknown + * until the last extra pass. As seen above, we use PPC_LI64() to + * load the callee's address, but this may optimize the number of + * instructions required based on the nature of the address. + * + * Since we don't want the number of instructions emitted to change, + * we pad the optimized PPC_LI64() call with NOPs to guarantee that + * we always have a five-instruction sequence, which is the maximum + * that PPC_LI64() can emit. + */ + for (i = ctx->idx - ctx_idx; i < 5; i++) + PPC_NOP(); + #ifdef PPC64_ELF_ABI_v1 - /* func points to the function descriptor */ - PPC_LI64(b2p[TMP_REG_2], func); - /* Load actual entry point from function descriptor */ - PPC_BPF_LL(b2p[TMP_REG_1], b2p[TMP_REG_2], 0); - /* ... and move it to LR */ - PPC_MTLR(b2p[TMP_REG_1]); /* * Load TOC from function descriptor at offset 8. * We can clobber r2 since we get called through a * function pointer (so caller will save/restore r2) * and since we don't use a TOC ourself. */ - PPC_BPF_LL(2, b2p[TMP_REG_2], 8); -#else - /* We can clobber r12 */ - PPC_FUNC_ADDR(12, func); - PPC_MTLR(12); + PPC_BPF_LL(2, 12, 8); + /* Load actual entry point from function descriptor */ + PPC_BPF_LL(12, 12, 0); #endif + + PPC_MTLR(12); PPC_BLRL(); } @@ -291,7 +268,7 @@ static void bpf_jit_emit_tail_call(u32 *image, struct codegen_context *ctx, u32 /* Assemble the body code between the prologue & epilogue */ static int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, struct codegen_context *ctx, - u32 *addrs) + u32 *addrs, bool extra_pass) { const struct bpf_insn *insn = fp->insnsi; int flen = fp->len; @@ -747,29 +724,30 @@ emit_clear: break; /* - * Call kernel helper + * Call kernel helper or bpf function */ case BPF_JMP | BPF_CALL: ctx->seen |= SEEN_FUNC; - func = (u8 *) __bpf_call_base + imm; - /* Save skb pointer if we need to re-cache skb data */ - if ((ctx->seen & SEEN_SKB) && - bpf_helper_changes_pkt_data(func)) - PPC_BPF_STL(3, 1, bpf_jit_stack_local(ctx)); + /* bpf function call */ + if (insn[i].src_reg == BPF_PSEUDO_CALL) + if (!extra_pass) + func = NULL; + else if (fp->aux->func && off < fp->aux->func_cnt) + /* use the subprog id from the off + * field to lookup the callee address + */ + func = (u8 *) fp->aux->func[off]->bpf_func; + else + return -EINVAL; + /* kernel helper call */ + else + func = (u8 *) __bpf_call_base + imm; bpf_jit_emit_func_call(image, ctx, (u64)func); /* move return value from r3 to BPF_REG_0 */ PPC_MR(b2p[BPF_REG_0], 3); - - /* refresh skb cache */ - if ((ctx->seen & SEEN_SKB) && - bpf_helper_changes_pkt_data(func)) { - /* reload skb pointer to r3 */ - PPC_BPF_LL(3, 1, bpf_jit_stack_local(ctx)); - bpf_jit_emit_skb_loads(image, ctx); - } break; /* @@ -887,65 +865,6 @@ cond_branch: break; /* - * Loads from packet header/data - * Assume 32-bit input value in imm and X (src_reg) - */ - - /* Absolute loads */ - case BPF_LD | BPF_W | BPF_ABS: - func = (u8 *)CHOOSE_LOAD_FUNC(imm, sk_load_word); - goto common_load_abs; - case BPF_LD | BPF_H | BPF_ABS: - func = (u8 *)CHOOSE_LOAD_FUNC(imm, sk_load_half); - goto common_load_abs; - case BPF_LD | BPF_B | BPF_ABS: - func = (u8 *)CHOOSE_LOAD_FUNC(imm, sk_load_byte); -common_load_abs: - /* - * Load from [imm] - * Load into r4, which can just be passed onto - * skb load helpers as the second parameter - */ - PPC_LI32(4, imm); - goto common_load; - - /* Indirect loads */ - case BPF_LD | BPF_W | BPF_IND: - func = (u8 *)sk_load_word; - goto common_load_ind; - case BPF_LD | BPF_H | BPF_IND: - func = (u8 *)sk_load_half; - goto common_load_ind; - case BPF_LD | BPF_B | BPF_IND: - func = (u8 *)sk_load_byte; -common_load_ind: - /* - * Load from [src_reg + imm] - * Treat src_reg as a 32-bit value - */ - PPC_EXTSW(4, src_reg); - if (imm) { - if (imm >= -32768 && imm < 32768) - PPC_ADDI(4, 4, IMM_L(imm)); - else { - PPC_LI32(b2p[TMP_REG_1], imm); - PPC_ADD(4, 4, b2p[TMP_REG_1]); - } - } - -common_load: - ctx->seen |= SEEN_SKB; - ctx->seen |= SEEN_FUNC; - bpf_jit_emit_func_call(image, ctx, (u64)func); - - /* - * Helper returns 'lt' condition on error, and an - * appropriate return value in BPF_REG_0 - */ - PPC_BCC(COND_LT, exit_addr); - break; - - /* * Tail call */ case BPF_JMP | BPF_TAIL_CALL: @@ -971,6 +890,14 @@ common_load: return 0; } +struct powerpc64_jit_data { + struct bpf_binary_header *header; + u32 *addrs; + u8 *image; + u32 proglen; + struct codegen_context ctx; +}; + struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) { u32 proglen; @@ -978,6 +905,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) u8 *image = NULL; u32 *code_base; u32 *addrs; + struct powerpc64_jit_data *jit_data; struct codegen_context cgctx; int pass; int flen; @@ -985,6 +913,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) struct bpf_prog *org_fp = fp; struct bpf_prog *tmp_fp; bool bpf_blinded = false; + bool extra_pass = false; if (!fp->jit_requested) return org_fp; @@ -998,11 +927,32 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) fp = tmp_fp; } + jit_data = fp->aux->jit_data; + if (!jit_data) { + jit_data = kzalloc(sizeof(*jit_data), GFP_KERNEL); + if (!jit_data) { + fp = org_fp; + goto out; + } + fp->aux->jit_data = jit_data; + } + flen = fp->len; + addrs = jit_data->addrs; + if (addrs) { + cgctx = jit_data->ctx; + image = jit_data->image; + bpf_hdr = jit_data->header; + proglen = jit_data->proglen; + alloclen = proglen + FUNCTION_DESCR_SIZE; + extra_pass = true; + goto skip_init_ctx; + } + addrs = kzalloc((flen+1) * sizeof(*addrs), GFP_KERNEL); if (addrs == NULL) { fp = org_fp; - goto out; + goto out_addrs; } memset(&cgctx, 0, sizeof(struct codegen_context)); @@ -1011,10 +961,10 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) cgctx.stack_size = round_up(fp->aux->stack_depth, 16); /* Scouting faux-generate pass 0 */ - if (bpf_jit_build_body(fp, 0, &cgctx, addrs)) { + if (bpf_jit_build_body(fp, 0, &cgctx, addrs, false)) { /* We hit something illegal or unsupported. */ fp = org_fp; - goto out; + goto out_addrs; } /* @@ -1032,9 +982,10 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) bpf_jit_fill_ill_insns); if (!bpf_hdr) { fp = org_fp; - goto out; + goto out_addrs; } +skip_init_ctx: code_base = (u32 *)(image + FUNCTION_DESCR_SIZE); /* Code generation passes 1-2 */ @@ -1042,7 +993,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) /* Now build the prologue, body code & epilogue for real. */ cgctx.idx = 0; bpf_jit_build_prologue(code_base, &cgctx); - bpf_jit_build_body(fp, code_base, &cgctx, addrs); + bpf_jit_build_body(fp, code_base, &cgctx, addrs, extra_pass); bpf_jit_build_epilogue(code_base, &cgctx); if (bpf_jit_enable > 1) @@ -1068,10 +1019,20 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) fp->jited_len = alloclen; bpf_flush_icache(bpf_hdr, (u8 *)bpf_hdr + (bpf_hdr->pages * PAGE_SIZE)); + if (!fp->is_func || extra_pass) { +out_addrs: + kfree(addrs); + kfree(jit_data); + fp->aux->jit_data = NULL; + } else { + jit_data->addrs = addrs; + jit_data->ctx = cgctx; + jit_data->proglen = proglen; + jit_data->image = image; + jit_data->header = bpf_hdr; + } out: - kfree(addrs); - if (bpf_blinded) bpf_jit_prog_release_other(fp, fp == org_fp ? tmp_fp : org_fp); diff --git a/arch/powerpc/oprofile/backtrace.c b/arch/powerpc/oprofile/backtrace.c index ecc66d5f02c9..ad054dd0d666 100644 --- a/arch/powerpc/oprofile/backtrace.c +++ b/arch/powerpc/oprofile/backtrace.c @@ -7,6 +7,7 @@ * 2 of the License, or (at your option) any later version. **/ +#include <linux/compat_time.h> #include <linux/oprofile.h> #include <linux/sched.h> #include <asm/processor.h> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 67d3125d0610..84b58abc08ee 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -222,6 +222,7 @@ config PTE_64BIT config PHYS_64BIT bool 'Large physical address support' if E500 || PPC_86xx depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx + select PHYS_ADDR_T_64BIT ---help--- This option enables kernel support for larger than 32-bit physical addresses. This feature may not be available on all cores. diff --git a/arch/powerpc/platforms/cell/spufs/fault.c b/arch/powerpc/platforms/cell/spufs/fault.c index 870c0a82d560..1e002e94d0f6 100644 --- a/arch/powerpc/platforms/cell/spufs/fault.c +++ b/arch/powerpc/platforms/cell/spufs/fault.c @@ -44,7 +44,7 @@ static void spufs_handle_event(struct spu_context *ctx, return; } - memset(&info, 0, sizeof(info)); + clear_siginfo(&info); switch (type) { case SPE_EVENT_INVALID_DMA: diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c index ccc421503363..c9ef3c532169 100644 --- a/arch/powerpc/platforms/cell/spufs/sched.c +++ b/arch/powerpc/platforms/cell/spufs/sched.c @@ -1095,18 +1095,6 @@ static int show_spu_loadavg(struct seq_file *s, void *private) atomic_read(&nr_spu_contexts), idr_get_cursor(&task_active_pid_ns(current)->idr) - 1); return 0; -} - -static int spu_loadavg_open(struct inode *inode, struct file *file) -{ - return single_open(file, show_spu_loadavg, NULL); -} - -static const struct file_operations spu_loadavg_fops = { - .open = spu_loadavg_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, }; int __init spu_sched_init(void) @@ -1135,7 +1123,7 @@ int __init spu_sched_init(void) mod_timer(&spuloadavg_timer, 0); - entry = proc_create("spu_loadavg", 0, NULL, &spu_loadavg_fops); + entry = proc_create_single("spu_loadavg", 0, NULL, show_spu_loadavg); if (!entry) goto out_stop_kthread; |
