diff options
Diffstat (limited to 'arch/sparc')
58 files changed, 558 insertions, 709 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index b6b442b0d793..0c7d365fa402 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -20,6 +20,7 @@ config SPARC select HAVE_ARCH_TRACEHOOK select SYSCTL_EXCEPTION_TRACE select ARCH_WANT_OPTIONAL_GPIOLIB + select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select RTC_CLASS select RTC_DRV_M48T59 select HAVE_IRQ_WORK @@ -40,6 +41,8 @@ config SPARC select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select MODULES_USE_ELF_RELA + select GENERIC_KERNEL_THREAD + select GENERIC_KERNEL_EXECVE config SPARC32 def_bool !64BIT diff --git a/arch/sparc/boot/piggyback.c b/arch/sparc/boot/piggyback.c index c0a798fcf030..bb7c95161d71 100644 --- a/arch/sparc/boot/piggyback.c +++ b/arch/sparc/boot/piggyback.c @@ -81,18 +81,18 @@ static void usage(void) static int start_line(const char *line) { - if (strcmp(line + 8, " T _start\n") == 0) + if (strcmp(line + 10, " _start\n") == 0) return 1; - else if (strcmp(line + 16, " T _start\n") == 0) + else if (strcmp(line + 18, " _start\n") == 0) return 1; return 0; } static int end_line(const char *line) { - if (strcmp(line + 8, " A _end\n") == 0) + if (strcmp(line + 10, " _end\n") == 0) return 1; - else if (strcmp (line + 16, " A _end\n") == 0) + else if (strcmp (line + 18, " _end\n") == 0) return 1; return 0; } @@ -100,8 +100,8 @@ static int end_line(const char *line) /* * Find address for start and end in System.map. * The file looks like this: - * f0004000 T _start - * f0379f79 A _end + * f0004000 ... _start + * f0379f79 ... _end * 1234567890123456 * ^coloumn 1 * There is support for 64 bit addresses too. diff --git a/arch/sparc/crypto/Makefile b/arch/sparc/crypto/Makefile index 6ae1ad5e502b..5d469d81761f 100644 --- a/arch/sparc/crypto/Makefile +++ b/arch/sparc/crypto/Makefile @@ -13,13 +13,13 @@ obj-$(CONFIG_CRYPTO_DES_SPARC64) += camellia-sparc64.o obj-$(CONFIG_CRYPTO_CRC32C_SPARC64) += crc32c-sparc64.o -sha1-sparc64-y := sha1_asm.o sha1_glue.o crop_devid.o -sha256-sparc64-y := sha256_asm.o sha256_glue.o crop_devid.o -sha512-sparc64-y := sha512_asm.o sha512_glue.o crop_devid.o -md5-sparc64-y := md5_asm.o md5_glue.o crop_devid.o +sha1-sparc64-y := sha1_asm.o sha1_glue.o +sha256-sparc64-y := sha256_asm.o sha256_glue.o +sha512-sparc64-y := sha512_asm.o sha512_glue.o +md5-sparc64-y := md5_asm.o md5_glue.o -aes-sparc64-y := aes_asm.o aes_glue.o crop_devid.o -des-sparc64-y := des_asm.o des_glue.o crop_devid.o -camellia-sparc64-y := camellia_asm.o camellia_glue.o crop_devid.o +aes-sparc64-y := aes_asm.o aes_glue.o +des-sparc64-y := des_asm.o des_glue.o +camellia-sparc64-y := camellia_asm.o camellia_glue.o -crc32c-sparc64-y := crc32c_asm.o crc32c_glue.o crop_devid.o +crc32c-sparc64-y := crc32c_asm.o crc32c_glue.o diff --git a/arch/sparc/crypto/aes_glue.c b/arch/sparc/crypto/aes_glue.c index 8f1c9980f637..3965d1d36dfa 100644 --- a/arch/sparc/crypto/aes_glue.c +++ b/arch/sparc/crypto/aes_glue.c @@ -475,3 +475,5 @@ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("AES Secure Hash Algorithm, sparc64 aes opcode accelerated"); MODULE_ALIAS("aes"); + +#include "crop_devid.c" diff --git a/arch/sparc/crypto/camellia_glue.c b/arch/sparc/crypto/camellia_glue.c index 42905c084299..62c89af3fd3f 100644 --- a/arch/sparc/crypto/camellia_glue.c +++ b/arch/sparc/crypto/camellia_glue.c @@ -320,3 +320,5 @@ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Camellia Cipher Algorithm, sparc64 camellia opcode accelerated"); MODULE_ALIAS("aes"); + +#include "crop_devid.c" diff --git a/arch/sparc/crypto/crc32c_glue.c b/arch/sparc/crypto/crc32c_glue.c index 0bd89cea8d8e..5162fad912ce 100644 --- a/arch/sparc/crypto/crc32c_glue.c +++ b/arch/sparc/crypto/crc32c_glue.c @@ -177,3 +177,5 @@ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("CRC32c (Castagnoli), sparc64 crc32c opcode accelerated"); MODULE_ALIAS("crc32c"); + +#include "crop_devid.c" diff --git a/arch/sparc/crypto/des_glue.c b/arch/sparc/crypto/des_glue.c index c4940c2d3073..41524cebcc49 100644 --- a/arch/sparc/crypto/des_glue.c +++ b/arch/sparc/crypto/des_glue.c @@ -527,3 +527,5 @@ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms, sparc64 des opcode accelerated"); MODULE_ALIAS("des"); + +#include "crop_devid.c" diff --git a/arch/sparc/crypto/md5_glue.c b/arch/sparc/crypto/md5_glue.c index 603d723038ce..09a9ea1dfb69 100644 --- a/arch/sparc/crypto/md5_glue.c +++ b/arch/sparc/crypto/md5_glue.c @@ -186,3 +186,5 @@ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("MD5 Secure Hash Algorithm, sparc64 md5 opcode accelerated"); MODULE_ALIAS("md5"); + +#include "crop_devid.c" diff --git a/arch/sparc/crypto/sha1_glue.c b/arch/sparc/crypto/sha1_glue.c index 2bbb20bee9f1..6cd5f29e1e0d 100644 --- a/arch/sparc/crypto/sha1_glue.c +++ b/arch/sparc/crypto/sha1_glue.c @@ -181,3 +181,5 @@ MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm, sparc64 sha1 opcode accelerated"); MODULE_ALIAS("sha1"); + +#include "crop_devid.c" diff --git a/arch/sparc/crypto/sha256_glue.c b/arch/sparc/crypto/sha256_glue.c index 591e656bd891..04f555ab2680 100644 --- a/arch/sparc/crypto/sha256_glue.c +++ b/arch/sparc/crypto/sha256_glue.c @@ -239,3 +239,5 @@ MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure Hash Algorithm, sparc64 sha256 op MODULE_ALIAS("sha224"); MODULE_ALIAS("sha256"); + +#include "crop_devid.c" diff --git a/arch/sparc/crypto/sha512_glue.c b/arch/sparc/crypto/sha512_glue.c index 486f0a2b7001..f04d1994d19a 100644 --- a/arch/sparc/crypto/sha512_glue.c +++ b/arch/sparc/crypto/sha512_glue.c @@ -224,3 +224,5 @@ MODULE_DESCRIPTION("SHA-384 and SHA-512 Secure Hash Algorithm, sparc64 sha512 op MODULE_ALIAS("sha384"); MODULE_ALIAS("sha512"); + +#include "crop_devid.c" diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild index 645a58da0e86..e26d430ce2fd 100644 --- a/arch/sparc/include/asm/Kbuild +++ b/arch/sparc/include/asm/Kbuild @@ -8,4 +8,5 @@ generic-y += local64.h generic-y += irq_regs.h generic-y += local.h generic-y += module.h +generic-y += trace_clock.h generic-y += word-at-a-time.h diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h index ce35a1cf1a20..be56a244c9cf 100644 --- a/arch/sparc/include/asm/atomic_64.h +++ b/arch/sparc/include/asm/atomic_64.h @@ -1,7 +1,7 @@ /* atomic.h: Thankfully the V9 is at least reasonable for this * stuff. * - * Copyright (C) 1996, 1997, 2000 David S. Miller (davem@redhat.com) + * Copyright (C) 1996, 1997, 2000, 2012 David S. Miller (davem@redhat.com) */ #ifndef __ARCH_SPARC64_ATOMIC__ @@ -106,6 +106,8 @@ static inline long atomic64_add_unless(atomic64_t *v, long a, long u) #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) +extern long atomic64_dec_if_positive(atomic64_t *v); + /* Atomic operations are already serializing */ #define smp_mb__before_atomic_dec() barrier() #define smp_mb__after_atomic_dec() barrier() diff --git a/arch/sparc/include/asm/backoff.h b/arch/sparc/include/asm/backoff.h index db3af0d30fb1..4e02086b839c 100644 --- a/arch/sparc/include/asm/backoff.h +++ b/arch/sparc/include/asm/backoff.h @@ -1,6 +1,46 @@ #ifndef _SPARC64_BACKOFF_H #define _SPARC64_BACKOFF_H +/* The macros in this file implement an exponential backoff facility + * for atomic operations. + * + * When multiple threads compete on an atomic operation, it is + * possible for one thread to be continually denied a successful + * completion of the compare-and-swap instruction. Heavily + * threaded cpu implementations like Niagara can compound this + * problem even further. + * + * When an atomic operation fails and needs to be retried, we spin a + * certain number of times. At each subsequent failure of the same + * operation we double the spin count, realizing an exponential + * backoff. + * + * When we spin, we try to use an operation that will cause the + * current cpu strand to block, and therefore make the core fully + * available to any other other runnable strands. There are two + * options, based upon cpu capabilities. + * + * On all cpus prior to SPARC-T4 we do three dummy reads of the + * condition code register. Each read blocks the strand for something + * between 40 and 50 cpu cycles. + * + * For SPARC-T4 and later we have a special "pause" instruction + * available. This is implemented using writes to register %asr27. + * The cpu will block the number of cycles written into the register, + * unless a disrupting trap happens first. SPARC-T4 specifically + * implements pause with a granularity of 8 cycles. Each strand has + * an internal pause counter which decrements every 8 cycles. So the + * chip shifts the %asr27 value down by 3 bits, and writes the result + * into the pause counter. If a value smaller than 8 is written, the + * chip blocks for 1 cycle. + * + * To achieve the same amount of backoff as the three %ccr reads give + * on earlier chips, we shift the backoff value up by 7 bits. (Three + * %ccr reads block for about 128 cycles, 1 << 7 == 128) We write the + * whole amount we want to block into the pause register, rather than + * loop writing 128 each time. + */ + #define BACKOFF_LIMIT (4 * 1024) #ifdef CONFIG_SMP @@ -11,16 +51,25 @@ #define BACKOFF_LABEL(spin_label, continue_label) \ spin_label -#define BACKOFF_SPIN(reg, tmp, label) \ - mov reg, tmp; \ -88: brnz,pt tmp, 88b; \ - sub tmp, 1, tmp; \ - set BACKOFF_LIMIT, tmp; \ - cmp reg, tmp; \ - bg,pn %xcc, label; \ - nop; \ - ba,pt %xcc, label; \ - sllx reg, 1, reg; +#define BACKOFF_SPIN(reg, tmp, label) \ + mov reg, tmp; \ +88: rd %ccr, %g0; \ + rd %ccr, %g0; \ + rd %ccr, %g0; \ + .section .pause_3insn_patch,"ax";\ + .word 88b; \ + sllx tmp, 7, tmp; \ + wr tmp, 0, %asr27; \ + clr tmp; \ + .previous; \ + brnz,pt tmp, 88b; \ + sub tmp, 1, tmp; \ + set BACKOFF_LIMIT, tmp; \ + cmp reg, tmp; \ + bg,pn %xcc, label; \ + nop; \ + ba,pt %xcc, label; \ + sllx reg, 1, reg; #else diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h index cef99fbc0a21..830502fe62b4 100644 --- a/arch/sparc/include/asm/compat.h +++ b/arch/sparc/include/asm/compat.h @@ -232,9 +232,10 @@ static inline void __user *arch_compat_alloc_user_space(long len) struct pt_regs *regs = current_thread_info()->kregs; unsigned long usp = regs->u_regs[UREG_I6]; - if (!(test_thread_flag(TIF_32BIT))) + if (test_thread_64bit_stack(usp)) usp += STACK_BIAS; - else + + if (test_thread_flag(TIF_32BIT)) usp &= 0xffffffffUL; usp -= len; diff --git a/arch/sparc/include/asm/processor_32.h b/arch/sparc/include/asm/processor_32.h index f74ac9ee33a8..c1e01914fd98 100644 --- a/arch/sparc/include/asm/processor_32.h +++ b/arch/sparc/include/asm/processor_32.h @@ -106,7 +106,6 @@ static inline void start_thread(struct pt_regs * regs, unsigned long pc, /* Free all resources held by a thread. */ #define release_thread(tsk) do { } while(0) -extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); extern unsigned long get_wchan(struct task_struct *); diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h index 4e5a483122a0..cce72ce4c334 100644 --- a/arch/sparc/include/asm/processor_64.h +++ b/arch/sparc/include/asm/processor_64.h @@ -94,6 +94,7 @@ struct thread_struct { #ifndef __ASSEMBLY__ #include <linux/types.h> +#include <asm/fpumacro.h> /* Return saved PC of a blocked thread. */ struct task_struct; @@ -143,6 +144,10 @@ do { \ : \ : "r" (regs), "r" (sp - sizeof(struct reg_window) - STACK_BIAS), \ "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \ + fprs_write(0); \ + current_thread_info()->xfsr[0] = 0; \ + current_thread_info()->fpsaved[0] = 0; \ + regs->tstate &= ~TSTATE_PEF; \ } while (0) #define start_thread32(regs, pc, sp) \ @@ -183,20 +188,37 @@ do { \ : \ : "r" (regs), "r" (sp - sizeof(struct reg_window32)), \ "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \ + fprs_write(0); \ + current_thread_info()->xfsr[0] = 0; \ + current_thread_info()->fpsaved[0] = 0; \ + regs->tstate &= ~TSTATE_PEF; \ } while (0) /* Free all resources held by a thread. */ #define release_thread(tsk) do { } while (0) -extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - extern unsigned long get_wchan(struct task_struct *task); #define task_pt_regs(tsk) (task_thread_info(tsk)->kregs) #define KSTK_EIP(tsk) (task_pt_regs(tsk)->tpc) #define KSTK_ESP(tsk) (task_pt_regs(tsk)->u_regs[UREG_FP]) -#define cpu_relax() barrier() +/* Please see the commentary in asm/backoff.h for a description of + * what these instructions are doing and how they have been choosen. + * To make a long story short, we are trying to yield the current cpu + * strand during busy loops. + */ +#define cpu_relax() asm volatile("\n99:\n\t" \ + "rd %%ccr, %%g0\n\t" \ + "rd %%ccr, %%g0\n\t" \ + "rd %%ccr, %%g0\n\t" \ + ".section .pause_3insn_patch,\"ax\"\n\t"\ + ".word 99b\n\t" \ + "wr %%g0, 128, %%asr27\n\t" \ + "nop\n\t" \ + "nop\n\t" \ + ".previous" \ + ::: "memory") /* Prefetch support. This is tuned for UltraSPARC-III and later. * UltraSPARC-I will treat these as nops, and UltraSPARC-II has diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h index c28765110706..67c62578d170 100644 --- a/arch/sparc/include/asm/prom.h +++ b/arch/sparc/include/asm/prom.h @@ -63,5 +63,13 @@ extern char *of_console_options; extern void irq_trans_init(struct device_node *dp); extern char *build_path_component(struct device_node *dp); +/* SPARC has local implementations */ +extern int of_address_to_resource(struct device_node *dev, int index, + struct resource *r); +#define of_address_to_resource of_address_to_resource + +void __iomem *of_iomap(struct device_node *node, int index); +#define of_iomap of_iomap + #endif /* __KERNEL__ */ #endif /* _SPARC_PROM_H */ diff --git a/arch/sparc/include/asm/ptrace.h b/arch/sparc/include/asm/ptrace.h index da43bdc62294..bdfafd7af46f 100644 --- a/arch/sparc/include/asm/ptrace.h +++ b/arch/sparc/include/asm/ptrace.h @@ -32,6 +32,9 @@ static inline bool pt_regs_clear_syscall(struct pt_regs *regs) #define arch_ptrace_stop(exit_code, info) \ synchronize_user_stack() +#define current_pt_regs() \ + ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1) + struct global_reg_snapshot { unsigned long tstate; unsigned long tpc; @@ -55,9 +58,7 @@ union global_cpu_snapshot { extern union global_cpu_snapshot global_cpu_snapshot[NR_CPUS]; -#define force_successful_syscall_return() \ -do { current_thread_info()->syscall_noerror = 1; \ -} while (0) +#define force_successful_syscall_return() set_thread_noerror(1) #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV)) #define instruction_pointer(regs) ((regs)->tpc) #define instruction_pointer_set(regs, val) ((regs)->tpc = (val)) @@ -100,6 +101,9 @@ static inline bool pt_regs_clear_syscall(struct pt_regs *regs) #define arch_ptrace_stop(exit_code, info) \ synchronize_user_stack() +#define current_pt_regs() \ + ((struct pt_regs *)((unsigned long)current_thread_info() + THREAD_SIZE) - 1) + #define user_mode(regs) (!((regs)->psr & PSR_PS)) #define instruction_pointer(regs) ((regs)->pc) #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP]) diff --git a/arch/sparc/include/asm/signal.h b/arch/sparc/include/asm/signal.h index d243c2ae02d2..77b85850d543 100644 --- a/arch/sparc/include/asm/signal.h +++ b/arch/sparc/include/asm/signal.h @@ -26,7 +26,5 @@ struct k_sigaction { void __user *ka_restorer; }; -#define ptrace_signal_deliver(regs, cookie) do { } while (0) - #endif /* !(__ASSEMBLY__) */ #endif /* !(__SPARC_SIGNAL_H) */ diff --git a/arch/sparc/include/asm/switch_to_64.h b/arch/sparc/include/asm/switch_to_64.h index 7923c4a2be38..cad36f56fa03 100644 --- a/arch/sparc/include/asm/switch_to_64.h +++ b/arch/sparc/include/asm/switch_to_64.h @@ -23,7 +23,7 @@ do { flush_tlb_pending(); \ /* If you are tempted to conditionalize the following */ \ /* so that ASI is only written if it changes, think again. */ \ __asm__ __volatile__("wr %%g0, %0, %%asi" \ - : : "r" (__thread_flag_byte_ptr(task_thread_info(next))[TI_FLAG_BYTE_CURRENT_DS]));\ + : : "r" (task_thread_info(next)->current_ds));\ trap_block[current_thread_info()->cpu].thread = \ task_thread_info(next); \ __asm__ __volatile__( \ diff --git a/arch/sparc/include/asm/syscalls.h b/arch/sparc/include/asm/syscalls.h index 45a43f637a14..bf8972adea17 100644 --- a/arch/sparc/include/asm/syscalls.h +++ b/arch/sparc/include/asm/syscalls.h @@ -8,6 +8,4 @@ extern asmlinkage long sparc_do_fork(unsigned long clone_flags, struct pt_regs *regs, unsigned long stack_size); -extern asmlinkage int sparc_execve(struct pt_regs *regs); - #endif /* _SPARC64_SYSCALLS_H */ diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h index 4e2276631081..269bd92313df 100644 --- a/arch/sparc/include/asm/thread_info_64.h +++ b/arch/sparc/include/asm/thread_info_64.h @@ -14,12 +14,12 @@ #define TI_FLAG_FAULT_CODE_SHIFT 56 #define TI_FLAG_BYTE_WSTATE 1 #define TI_FLAG_WSTATE_SHIFT 48 -#define TI_FLAG_BYTE_CWP 2 -#define TI_FLAG_CWP_SHIFT 40 -#define TI_FLAG_BYTE_CURRENT_DS 3 -#define TI_FLAG_CURRENT_DS_SHIFT 32 -#define TI_FLAG_BYTE_FPDEPTH 4 -#define TI_FLAG_FPDEPTH_SHIFT 24 +#define TI_FLAG_BYTE_NOERROR 2 +#define TI_FLAG_BYTE_NOERROR_SHIFT 40 +#define TI_FLAG_BYTE_FPDEPTH 3 +#define TI_FLAG_FPDEPTH_SHIFT 32 +#define TI_FLAG_BYTE_CWP 4 +#define TI_FLAG_CWP_SHIFT 24 #define TI_FLAG_BYTE_WSAVED 5 #define TI_FLAG_WSAVED_SHIFT 16 @@ -47,7 +47,7 @@ struct thread_info { struct exec_domain *exec_domain; int preempt_count; /* 0 => preemptable, <0 => BUG */ __u8 new_child; - __u8 syscall_noerror; + __u8 current_ds; __u16 cpu; unsigned long *utraps; @@ -74,9 +74,9 @@ struct thread_info { #define TI_FAULT_CODE (TI_FLAGS + TI_FLAG_BYTE_FAULT_CODE) #define TI_WSTATE (TI_FLAGS + TI_FLAG_BYTE_WSTATE) #define TI_CWP (TI_FLAGS + TI_FLAG_BYTE_CWP) -#define TI_CURRENT_DS (TI_FLAGS + TI_FLAG_BYTE_CURRENT_DS) #define TI_FPDEPTH (TI_FLAGS + TI_FLAG_BYTE_FPDEPTH) #define TI_WSAVED (TI_FLAGS + TI_FLAG_BYTE_WSAVED) +#define TI_SYS_NOERROR (TI_FLAGS + TI_FLAG_BYTE_NOERROR) #define TI_FPSAVED 0x00000010 #define TI_KSP 0x00000018 #define TI_FAULT_ADDR 0x00000020 @@ -84,7 +84,7 @@ struct thread_info { #define TI_EXEC_DOMAIN 0x00000030 #define TI_PRE_COUNT 0x00000038 #define TI_NEW_CHILD 0x0000003c -#define TI_SYS_NOERROR 0x0000003d +#define TI_CURRENT_DS 0x0000003d #define TI_CPU 0x0000003e #define TI_UTRAPS 0x00000040 #define TI_REG_WINDOW 0x00000048 @@ -121,7 +121,7 @@ struct thread_info { #define INIT_THREAD_INFO(tsk) \ { \ .task = &tsk, \ - .flags = ((unsigned long)ASI_P) << TI_FLAG_CURRENT_DS_SHIFT, \ + .current_ds = ASI_P, \ .exec_domain = &default_exec_domain, \ .preempt_count = INIT_PREEMPT_COUNT, \ .restart_block = { \ @@ -153,13 +153,12 @@ register struct thread_info *current_thread_info_reg asm("g6"); #define set_thread_wstate(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE] = (val)) #define get_thread_cwp() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP]) #define set_thread_cwp(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP] = (val)) -#define get_thread_current_ds() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS]) -#define set_thread_current_ds(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS] = (val)) +#define get_thread_noerror() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR]) +#define set_thread_noerror(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_NOERROR] = (val)) #define get_thread_fpdepth() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH]) #define set_thread_fpdepth(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH] = (val)) #define get_thread_wsaved() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED]) #define set_thread_wsaved(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED] = (val)) - #endif /* !(__ASSEMBLY__) */ /* @@ -259,6 +258,11 @@ static inline bool test_and_clear_restore_sigmask(void) #define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG) +#define thread32_stack_is_64bit(__SP) (((__SP) & 0x1) != 0) +#define test_thread_64bit_stack(__SP) \ + ((test_thread_flag(TIF_32BIT) && !thread32_stack_is_64bit(__SP)) ? \ + false : true) + #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ diff --git a/arch/sparc/include/asm/ttable.h b/arch/sparc/include/asm/ttable.h index 48f2807d3265..71b5a67522ab 100644 --- a/arch/sparc/include/asm/ttable.h +++ b/arch/sparc/include/asm/ttable.h @@ -372,7 +372,9 @@ etrap_spill_fixup_64bit: \ /* Normal 32bit spill */ #define SPILL_2_GENERIC(ASI) \ - srl %sp, 0, %sp; \ + and %sp, 1, %g3; \ + brnz,pn %g3, (. - (128 + 4)); \ + srl %sp, 0, %sp; \ stwa %l0, [%sp + %g0] ASI; \ mov 0x04, %g3; \ stwa %l1, [%sp + %g3] ASI; \ @@ -398,14 +400,16 @@ etrap_spill_fixup_64bit: \ stwa %i6, [%g1 + %g0] ASI; \ stwa %i7, [%g1 + %g3] ASI; \ saved; \ - retry; nop; nop; \ + retry; \ b,a,pt %xcc, spill_fixup_dax; \ b,a,pt %xcc, spill_fixup_mna; \ b,a,pt %xcc, spill_fixup; #define SPILL_2_GENERIC_ETRAP \ etrap_user_spill_32bit: \ - srl %sp, 0, %sp; \ + and %sp, 1, %g3; \ + brnz,pn %g3, etrap_user_spill_64bit; \ + srl %sp, 0, %sp; \ stwa %l0, [%sp + 0x00] %asi; \ stwa %l1, [%sp + 0x04] %asi; \ stwa %l2, [%sp + 0x08] %asi; \ @@ -427,7 +431,7 @@ etrap_user_spill_32bit: \ ba,pt %xcc, etrap_save; \ wrpr %g1, %cwp; \ nop; nop; nop; nop; \ - nop; nop; nop; nop; \ + nop; nop; \ ba,a,pt %xcc, etrap_spill_fixup_32bit; \ ba,a,pt %xcc, etrap_spill_fixup_32bit; \ ba,a,pt %xcc, etrap_spill_fixup_32bit; @@ -592,7 +596,9 @@ user_rtt_fill_64bit: \ /* Normal 32bit fill */ #define FILL_2_GENERIC(ASI) \ - srl %sp, 0, %sp; \ + and %sp, 1, %g3; \ + brnz,pn %g3, (. - (128 + 4)); \ + srl %sp, 0, %sp; \ lduwa [%sp + %g0] ASI, %l0; \ mov 0x04, %g2; \ mov 0x08, %g3; \ @@ -616,14 +622,16 @@ user_rtt_fill_64bit: \ lduwa [%g1 + %g3] ASI, %i6; \ lduwa [%g1 + %g5] ASI, %i7; \ restored; \ - retry; nop; nop; nop; nop; \ + retry; nop; nop; \ b,a,pt %xcc, fill_fixup_dax; \ b,a,pt %xcc, fill_fixup_mna; \ b,a,pt %xcc, fill_fixup; #define FILL_2_GENERIC_RTRAP \ user_rtt_fill_32bit: \ - srl %sp, 0, %sp; \ + and %sp, 1, %g3; \ + brnz,pn %g3, user_rtt_fill_64bit; \ + srl %sp, 0, %sp; \ lduwa [%sp + 0x00] %asi, %l0; \ lduwa [%sp + 0x04] %asi, %l1; \ lduwa [%sp + 0x08] %asi, %l2; \ @@ -643,7 +651,7 @@ user_rtt_fill_32bit: \ ba,pt %xcc, user_rtt_pre_restore; \ restored; \ nop; nop; nop; nop; nop; \ - nop; nop; nop; nop; nop; \ + nop; nop; nop; \ ba,a,pt %xcc, user_rtt_fill_fixup; \ ba,a,pt %xcc, user_rtt_fill_fixup; \ ba,a,pt %xcc, user_rtt_fill_fixup; diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h index 73083e1d38d9..e562d3caee57 100644 --- a/arch/sparc/include/asm/uaccess_64.h +++ b/arch/sparc/include/asm/uaccess_64.h @@ -38,14 +38,14 @@ #define VERIFY_READ 0 #define VERIFY_WRITE 1 -#define get_fs() ((mm_segment_t) { get_thread_current_ds() }) +#define get_fs() ((mm_segment_t){(current_thread_info()->current_ds)}) #define get_ds() (KERNEL_DS) #define segment_eq(a,b) ((a).seg == (b).seg) #define set_fs(val) \ do { \ - set_thread_current_ds((val).seg); \ + current_thread_info()->current_ds =(val).seg; \ __asm__ __volatile__ ("wr %%g0, %0, %%asi" : : "r" ((val).seg)); \ } while(0) diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index 0ecea6ed943e..c3e5d8b64171 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -46,6 +46,7 @@ #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND #define __ARCH_WANT_COMPAT_SYS_SENDFILE #endif +#define __ARCH_WANT_SYS_EXECVE /* * "Conditional" syscalls diff --git a/arch/sparc/include/uapi/asm/ioctls.h b/arch/sparc/include/uapi/asm/ioctls.h index 9155f7041d44..897d1723fa14 100644 --- a/arch/sparc/include/uapi/asm/ioctls.h +++ b/arch/sparc/include/uapi/asm/ioctls.h @@ -21,6 +21,9 @@ #define TCSETSF2 _IOW('T', 15, struct termios2) #define TIOCGDEV _IOR('T',0x32, unsigned int) /* Get primary device node of /dev/console */ #define TIOCVHANGUP _IO('T', 0x37) +#define TIOCGPKT _IOR('T', 0x38, int) /* Get packet mode state */ +#define TIOCGPTLCK _IOR('T', 0x39, int) /* Get Pty lock state */ +#define TIOCGEXCL _IOR('T', 0x40, int) /* Get exclusive mode state */ /* Note that all the ioctls that are not available in Linux have a * double underscore on the front to: a) avoid some programs to diff --git a/arch/sparc/include/uapi/asm/socket.h b/arch/sparc/include/uapi/asm/socket.h index bea1568ae4af..c83a937ead00 100644 --- a/arch/sparc/include/uapi/asm/socket.h +++ b/arch/sparc/include/uapi/asm/socket.h @@ -41,6 +41,7 @@ #define SO_ATTACH_FILTER 0x001a #define SO_DETACH_FILTER 0x001b +#define SO_GET_FILTER SO_ATTACH_FILTER #define SO_PEERNAME 0x001c #define SO_TIMESTAMP 0x001d diff --git a/arch/sparc/include/uapi/asm/unistd.h b/arch/sparc/include/uapi/asm/unistd.h index 8974ef7ae920..cac719d1bc5c 100644 --- a/arch/sparc/include/uapi/asm/unistd.h +++ b/arch/sparc/include/uapi/asm/unistd.h @@ -405,8 +405,13 @@ #define __NR_setns 337 #define __NR_process_vm_readv 338 #define __NR_process_vm_writev 339 +#define __NR_kern_features 340 +#define __NR_kcmp 341 -#define NR_syscalls 340 +#define NR_syscalls 342 + +/* Bitmask values returned from kern_features system call. */ +#define KERN_FEATURE_MIXED_MODE_STACK 0x00000001 #ifdef __32bit_syscall_numbers__ /* Sparc 32-bit only has the "setresuid32", "getresuid32" variants, diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index dcaa1cf0de40..21fd1a8f47d2 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -806,23 +806,10 @@ sys_nis_syscall: call c_sys_nis_syscall mov %l5, %o7 - .align 4 - .globl sys_execve -sys_execve: - mov %o7, %l5 - add %sp, STACKFRAME_SZ, %o0 ! pt_regs *regs arg - call sparc_execve - mov %l5, %o7 - - .globl sunos_execv sunos_execv: - st %g0, [%sp + STACKFRAME_SZ + PT_I2] - - call sparc_execve - add %sp, STACKFRAME_SZ, %o0 - - b ret_sys_call - ld [%sp + STACKFRAME_SZ + PT_I0], %o0 + .globl sunos_execv + b sys_execve + clr %i2 .align 4 .globl sys_sparc_pipe @@ -959,17 +946,9 @@ flush_patch_four: .align 4 linux_sparc_ni_syscall: sethi %hi(sys_ni_syscall), %l7 - b syscall_is_too_hard + b do_syscall or %l7, %lo(sys_ni_syscall), %l7 -linux_fast_syscall: - andn %l7, 3, %l7 - mov %i0, %o0 - mov %i1, %o1 - mov %i2, %o2 - jmpl %l7 + %g0, %g0 - mov %i3, %o3 - linux_syscall_trace: add %sp, STACKFRAME_SZ, %o0 call syscall_trace @@ -991,6 +970,23 @@ ret_from_fork: b ret_sys_call ld [%sp + STACKFRAME_SZ + PT_I0], %o0 + .globl ret_from_kernel_thread +ret_from_kernel_thread: + call schedule_tail + ld [%g3 + TI_TASK], %o0 + ld [%sp + STACKFRAME_SZ + PT_G1], %l0 + call %l0 + ld [%sp + STACKFRAME_SZ + PT_G2], %o0 + rd %psr, %l1 + ld [%sp + STACKFRAME_SZ + PT_PSR], %l0 + andn %l0, PSR_CWP, %l0 + nop + and %l1, PSR_CWP, %l1 + or %l0, %l1, %l0 + st %l0, [%sp + STACKFRAME_SZ + PT_PSR] + b ret_sys_call + mov 0, %o0 + /* Linux native system calls enter here... */ .align 4 .globl linux_sparc_syscall @@ -1002,11 +998,8 @@ linux_sparc_syscall: bgeu linux_sparc_ni_syscall sll %g1, 2, %l4 ld [%l7 + %l4], %l7 - andcc %l7, 1, %g0 - bne linux_fast_syscall - /* Just do first insn from SAVE_ALL in the delay slot */ -syscall_is_too_hard: +do_syscall: SAVE_ALL_HEAD rd %wim, %l3 diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h index 0c218e4c0881..cc3c5cb47cda 100644 --- a/arch/sparc/kernel/entry.h +++ b/arch/sparc/kernel/entry.h @@ -59,6 +59,13 @@ struct popc_6insn_patch_entry { extern struct popc_6insn_patch_entry __popc_6insn_patch, __popc_6insn_patch_end; +struct pause_patch_entry { + unsigned int addr; + unsigned int insns[3]; +}; +extern struct pause_patch_entry __pause_3insn_patch, + __pause_3insn_patch_end; + extern void __init per_cpu_patch(void); extern void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *, struct sun4v_1insn_patch_entry *); diff --git a/arch/sparc/kernel/etrap_64.S b/arch/sparc/kernel/etrap_64.S index 786b185e6e3f..1276ca2567ba 100644 --- a/arch/sparc/kernel/etrap_64.S +++ b/arch/sparc/kernel/etrap_64.S @@ -92,8 +92,10 @@ etrap_save: save %g2, -STACK_BIAS, %sp rdpr %wstate, %g2 wrpr %g0, 0, %canrestore sll %g2, 3, %g2 + + /* Set TI_SYS_FPDEPTH to 1 and clear TI_SYS_NOERROR. */ mov 1, %l5 - stb %l5, [%l6 + TI_FPDEPTH] + sth %l5, [%l6 + TI_SYS_NOERROR] wrpr %g3, 0, %otherwin wrpr %g2, 0, %wstate @@ -152,7 +154,9 @@ etrap_save: save %g2, -STACK_BIAS, %sp add %l6, TI_FPSAVED + 1, %l4 srl %l5, 1, %l3 add %l5, 2, %l5 - stb %l5, [%l6 + TI_FPDEPTH] + + /* Set TI_SYS_FPDEPTH to %l5 and clear TI_SYS_NOERROR. */ + sth %l5, [%l6 + TI_SYS_NOERROR] ba,pt %xcc, 2b stb %g0, [%l4 + %l3] nop diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c index f8b6eee40bde..87f60ee65433 100644 --- a/arch/sparc/kernel/leon_kernel.c +++ b/arch/sparc/kernel/leon_kernel.c @@ -56,11 +56,13 @@ static inline unsigned int leon_eirq_get(int cpu) static void leon_handle_ext_irq(unsigned int irq, struct irq_desc *desc) { unsigned int eirq; + struct irq_bucket *p; int cpu = sparc_leon3_cpuid(); eirq = leon_eirq_get(cpu); - if ((eirq & 0x10) && irq_map[eirq]->irq) /* bit4 tells if IRQ happened */ - generic_handle_irq(irq_map[eirq]->irq); + p = irq_map[eirq]; + if ((eirq & 0x10) && p && p->irq) /* bit4 tells if IRQ happened */ + generic_handle_irq(p->irq); } /* The extended IRQ controller has been found, this function registers it */ diff --git a/arch/sparc/kernel/pci_impl.h b/arch/sparc/kernel/pci_impl.h index 918a2031c8bb..5f688531f48c 100644 --- a/arch/sparc/kernel/pci_impl.h +++ b/arch/sparc/kernel/pci_impl.h @@ -88,7 +88,7 @@ struct pci_pbm_info { int chip_revision; /* Name used for top-level resources. */ - char *name; + const char *name; /* OBP specific information. */ struct platform_device *op; diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c index 885a8af74064..b5c38faa4ead 100644 --- a/arch/sparc/kernel/perf_event.c +++ b/arch/sparc/kernel/perf_event.c @@ -1762,15 +1762,25 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry, ufp = regs->u_regs[UREG_I6] & 0xffffffffUL; do { - struct sparc_stackf32 *usf, sf; unsigned long pc; - usf = (struct sparc_stackf32 *) ufp; - if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) - break; + if (thread32_stack_is_64bit(ufp)) { + struct sparc_stackf *usf, sf; - pc = sf.callers_pc; - ufp = (unsigned long)sf.fp; + ufp += STACK_BIAS; + usf = (struct sparc_stackf *) ufp; + if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) + break; + pc = sf.callers_pc & 0xffffffff; + ufp = ((unsigned long) sf.fp) & 0xffffffff; + } else { + struct sparc_stackf32 *usf, sf; + usf = (struct sparc_stackf32 *) ufp; + if (__copy_from_user_inatomic(&sf, usf, sizeof(sf))) + break; + pc = sf.callers_pc; + ufp = (unsigned long)sf.fp; + } perf_callchain_store(entry, pc); } while (entry->nr < PERF_MAX_STACK_DEPTH); } diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index 487bffb36f5e..be8e862badaf 100644 --- a/arch/sparc/kernel/process_32.c +++ b/arch/sparc/kernel/process_32.c @@ -286,8 +286,7 @@ asmlinkage int sparc_do_fork(unsigned long clone_flags, parent_tid_ptr = regs->u_regs[UREG_I2]; child_tid_ptr = regs->u_regs[UREG_I4]; - ret = do_fork(clone_flags, stack_start, - regs, stack_size, + ret = do_fork(clone_flags, stack_start, stack_size, (int __user *) parent_tid_ptr, (int __user *) child_tid_ptr); @@ -316,13 +315,13 @@ asmlinkage int sparc_do_fork(unsigned long clone_flags, * XXX See comment above sys_vfork in sparc64. todo. */ extern void ret_from_fork(void); +extern void ret_from_kernel_thread(void); int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long unused, - struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { struct thread_info *ti = task_thread_info(p); - struct pt_regs *childregs; + struct pt_regs *childregs, *regs = current_pt_regs(); char *new_stack; #ifndef CONFIG_SMP @@ -336,16 +335,13 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, } /* - * p->thread_info new_stack childregs - * ! ! ! {if(PSR_PS) } - * V V (stk.fr.) V (pt_regs) { (stk.fr.) } - * +----- - - - - - ------+===========+============={+==========}+ + * p->thread_info new_stack childregs stack bottom + * ! ! ! ! + * V V (stk.fr.) V (pt_regs) V + * +----- - - - - - ------+===========+=============+ */ new_stack = task_stack_page(p) + THREAD_SIZE; - if (regs->psr & PSR_PS) - new_stack -= STACKFRAME_SZ; new_stack -= STACKFRAME_SZ + TRACEREG_SZ; - memcpy(new_stack, (char *)regs - STACKFRAME_SZ, STACKFRAME_SZ + TRACEREG_SZ); childregs = (struct pt_regs *) (new_stack + STACKFRAME_SZ); /* @@ -356,55 +352,58 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, * Thus, kpsr|=PSR_PIL. */ ti->ksp = (unsigned long) new_stack; + p->thread.kregs = childregs; + + if (unlikely(p->flags & PF_KTHREAD)) { + extern int nwindows; + unsigned long psr; + memset(new_stack, 0, STACKFRAME_SZ + TRACEREG_SZ); + p->thread.flags |= SPARC_FLAG_KTHREAD; + p->thread.current_ds = KERNEL_DS; + ti->kpc = (((unsigned long) ret_from_kernel_thread) - 0x8); + childregs->u_regs[UREG_G1] = sp; /* function */ + childregs->u_regs[UREG_G2] = arg; + psr = childregs->psr = get_psr(); + ti->kpsr = psr | PSR_PIL; + ti->kwim = 1 << (((psr & PSR_CWP) + 1) % nwindows); + return 0; + } + memcpy(new_stack, (char *)regs - STACKFRAME_SZ, STACKFRAME_SZ + TRACEREG_SZ); + childregs->u_regs[UREG_FP] = sp; + p->thread.flags &= ~SPARC_FLAG_KTHREAD; + p->thread.current_ds = USER_DS; ti->kpc = (((unsigned long) ret_from_fork) - 0x8); ti->kpsr = current->thread.fork_kpsr | PSR_PIL; ti->kwim = current->thread.fork_kwim; - if(regs->psr & PSR_PS) { - extern struct pt_regs fake_swapper_regs; + if (sp != regs->u_regs[UREG_FP]) { + struct sparc_stackf __user *childstack; + struct sparc_stackf __user *parentstack; - p->thread.kregs = &fake_swapper_regs; - new_stack += STACKFRAME_SZ + TRACEREG_SZ; - childregs->u_regs[UREG_FP] = (unsigned long) new_stack; - p->thread.flags |= SPARC_FLAG_KTHREAD; - p->thread.current_ds = KERNEL_DS; - memcpy(new_stack, (void *)regs->u_regs[UREG_FP], STACKFRAME_SZ); - childregs->u_regs[UREG_G6] = (unsigned long) ti; - } else { - p->thread.kregs = childregs; - childregs->u_regs[UREG_FP] = sp; - p->thread.flags &= ~SPARC_FLAG_KTHREAD; - p->thread.current_ds = USER_DS; - - if (sp != regs->u_regs[UREG_FP]) { - struct sparc_stackf __user *childstack; - struct sparc_stackf __user *parentstack; - - /* - * This is a clone() call with supplied user stack. - * Set some valid stack frames to give to the child. - */ - childstack = (struct sparc_stackf __user *) - (sp & ~0xfUL); - parentstack = (struct sparc_stackf __user *) - regs->u_regs[UREG_FP]; + /* + * This is a clone() call with supplied user stack. + * Set some valid stack frames to give to the child. + */ + childstack = (struct sparc_stackf __user *) + (sp & ~0xfUL); + parentstack = (struct sparc_stackf __user *) + regs->u_regs[UREG_FP]; #if 0 - printk("clone: parent stack:\n"); - show_stackframe(parentstack); + printk("clone: parent stack:\n"); + show_stackframe(parentstack); #endif - childstack = clone_stackframe(childstack, parentstack); - if (!childstack) - return -EFAULT; + childstack = clone_stackframe(childstack, parentstack); + if (!childstack) + return -EFAULT; #if 0 - printk("clone: child stack:\n"); - show_stackframe(childstack); + printk("clone: child stack:\n"); + show_stackframe(childstack); #endif - childregs->u_regs[UREG_FP] = (unsigned long)childstack; - } + childregs->u_regs[UREG_FP] = (unsigned long)childstack; } #ifdef CONFIG_SMP @@ -475,69 +474,6 @@ int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs) return 1; } -/* - * sparc_execve() executes a new program after the asm stub has set - * things up for us. This should basically do what I want it to. - */ -asmlinkage int sparc_execve(struct pt_regs *regs) -{ - int error, base = 0; - struct filename *filename; - - /* Check for indirect call. */ - if(regs->u_regs[UREG_G1] == 0) - base = 1; - - filename = getname((char __user *)regs->u_regs[base + UREG_I0]); - error = PTR_ERR(filename); - if(IS_ERR(filename)) - goto out; - error = do_execve(filename->name, - (const char __user *const __user *) - regs->u_regs[base + UREG_I1], - (const char __user *const __user *) - regs->u_regs[base + UREG_I2], - regs); - putname(filename); -out: - return error; -} - -/* - * This is the mechanism for creating a new kernel thread. - * - * NOTE! Only a kernel-only process(ie the swapper or direct descendants - * who haven't done an "execve()") should use this: it will work within - * a system call from a "real" process, but the process memory space will - * not be freed until both the parent and the child have exited. - */ -pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) -{ - long retval; - - __asm__ __volatile__("mov %4, %%g2\n\t" /* Set aside fn ptr... */ - "mov %5, %%g3\n\t" /* and arg. */ - "mov %1, %%g1\n\t" - "mov %2, %%o0\n\t" /* Clone flags. */ - "mov 0, %%o1\n\t" /* usp arg == 0 */ - "t 0x10\n\t" /* Linux/Sparc clone(). */ - "cmp %%o1, 0\n\t" - "be 1f\n\t" /* The parent, just return. */ - " nop\n\t" /* Delay slot. */ - "jmpl %%g2, %%o7\n\t" /* Call the function. */ - " mov %%g3, %%o0\n\t" /* Get back the arg in delay. */ - "mov %3, %%g1\n\t" - "t 0x10\n\t" /* Linux/Sparc exit(). */ - /* Notreached by child. */ - "1: mov %%o0, %0\n\t" : - "=r" (retval) : - "i" (__NR_clone), "r" (flags | CLONE_VM | CLONE_UNTRACED), - "i" (__NR_exit), "r" (fn), "r" (arg) : - "g1", "g2", "g3", "o0", "o1", "memory", "cc"); - return retval; -} -EXPORT_SYMBOL(kernel_thread); - unsigned long get_wchan(struct task_struct *task) { unsigned long pc, fp, bias = 0; diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index d778248ef3f8..cdb80b2adbe0 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -452,13 +452,16 @@ void flush_thread(void) /* It's a bit more tricky when 64-bit tasks are involved... */ static unsigned long clone_stackframe(unsigned long csp, unsigned long psp) { + bool stack_64bit = test_thread_64bit_stack(psp); unsigned long fp, distance, rval; - if (!(test_thread_flag(TIF_32BIT))) { + if (stack_64bit) { csp += STACK_BIAS; psp += STACK_BIAS; __get_user(fp, &(((struct reg_window __user *)psp)->ins[6])); fp += STACK_BIAS; + if (test_thread_flag(TIF_32BIT)) + fp &= 0xffffffff; } else __get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6])); @@ -472,7 +475,7 @@ static unsigned long clone_stackframe(unsigned long csp, unsigned long psp) rval = (csp - distance); if (copy_in_user((void __user *) rval, (void __user *) psp, distance)) rval = 0; - else if (test_thread_flag(TIF_32BIT)) { + else if (!stack_64bit) { if (put_user(((u32)csp), &(((struct reg_window32 __user *)rval)->ins[6]))) rval = 0; @@ -507,18 +510,18 @@ void synchronize_user_stack(void) flush_user_windows(); if ((window = get_thread_wsaved()) != 0) { - int winsize = sizeof(struct reg_window); - int bias = 0; - - if (test_thread_flag(TIF_32BIT)) - winsize = sizeof(struct reg_window32); - else - bias = STACK_BIAS; - window -= 1; do { - unsigned long sp = (t->rwbuf_stkptrs[window] + bias); struct reg_window *rwin = &t->reg_window[window]; + int winsize = sizeof(struct reg_window); + unsigned long sp; + + sp = t->rwbuf_stkptrs[window]; + + if (test_thread_64bit_stack(sp)) + sp += STACK_BIAS; + else + winsize = sizeof(struct reg_window32); if (!copy_to_user((char __user *)sp, rwin, winsize)) { shift_window_buffer(window, get_thread_wsaved() - 1, t); @@ -544,13 +547,6 @@ void fault_in_user_windows(void) { struct thread_info *t = current_thread_info(); unsigned long window; - int winsize = sizeof(struct reg_window); - int bias = 0; - - if (test_thread_flag(TIF_32BIT)) - winsize = sizeof(struct reg_window32); - else - bias = STACK_BIAS; flush_user_windows(); window = get_thread_wsaved(); @@ -558,8 +554,16 @@ void fault_in_user_windows(void) if (likely(window != 0)) { window -= 1; do { - unsigned long sp = (t->rwbuf_stkptrs[window] + bias); struct reg_window *rwin = &t->reg_window[window]; + int winsize = sizeof(struct reg_window); + unsigned long sp; + + sp = t->rwbuf_stkptrs[window]; + + if (test_thread_64bit_stack(sp)) + sp += STACK_BIAS; + else + winsize = sizeof(struct reg_window32); if (unlikely(sp & 0x7UL)) stack_unaligned(sp); @@ -597,8 +601,7 @@ asmlinkage long sparc_do_fork(unsigned long clone_flags, child_tid_ptr = (int __user *) regs->u_regs[UREG_I4]; } - ret = do_fork(clone_flags, stack_start, - regs, stack_size, + ret = do_fork(clone_flags, stack_start, stack_size, parent_tid_ptr, child_tid_ptr); /* If we get an error and potentially restart the system @@ -618,64 +621,55 @@ asmlinkage long sparc_do_fork(unsigned long clone_flags, * Child --> %o0 == parents pid, %o1 == 1 */ int copy_thread(unsigned long clone_flags, unsigned long sp, - unsigned long unused, - struct task_struct *p, struct pt_regs *regs) + unsigned long arg, struct task_struct *p) { struct thread_info *t = task_thread_info(p); + struct pt_regs *regs = current_pt_regs(); struct sparc_stackf *parent_sf; unsigned long child_stack_sz; char *child_trap_frame; - int kernel_thread; - - kernel_thread = (regs->tstate & TSTATE_PRIV) ? 1 : 0; - parent_sf = ((struct sparc_stackf *) regs) - 1; /* Calculate offset to stack_frame & pt_regs */ - child_stack_sz = ((STACKFRAME_SZ + TRACEREG_SZ) + - (kernel_thread ? STACKFRAME_SZ : 0)); + child_stack_sz = (STACKFRAME_SZ + TRACEREG_SZ); child_trap_frame = (task_stack_page(p) + (THREAD_SIZE - child_stack_sz)); - memcpy(child_trap_frame, parent_sf, child_stack_sz); - t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) | - (0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) | - (((regs->tstate + 1) & TSTATE_CWP) << TI_FLAG_CWP_SHIFT); t->new_child = 1; t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS; t->kregs = (struct pt_regs *) (child_trap_frame + sizeof(struct sparc_stackf)); t->fpsaved[0] = 0; - if (kernel_thread) { - struct sparc_stackf *child_sf = (struct sparc_stackf *) - (child_trap_frame + (STACKFRAME_SZ + TRACEREG_SZ)); - - /* Zero terminate the stack backtrace. */ - child_sf->fp = NULL; - t->kregs->u_regs[UREG_FP] = - ((unsigned long) child_sf) - STACK_BIAS; + if (unlikely(p->flags & PF_KTHREAD)) { + memset(child_trap_frame, 0, child_stack_sz); + __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP] = + (current_pt_regs()->tstate + 1) & TSTATE_CWP; + t->current_ds = ASI_P; + t->kregs->u_regs[UREG_G1] = sp; /* function */ + t->kregs->u_regs[UREG_G2] = arg; + return 0; + } - t->flags |= ((long)ASI_P << TI_FLAG_CURRENT_DS_SHIFT); - t->kregs->u_regs[UREG_G6] = (unsigned long) t; - t->kregs->u_regs[UREG_G4] = (unsigned long) t->task; - } else { - if (t->flags & _TIF_32BIT) { - sp &= 0x00000000ffffffffUL; - regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL; - } - t->kregs->u_regs[UREG_FP] = sp; - t->flags |= ((long)ASI_AIUS << TI_FLAG_CURRENT_DS_SHIFT); - if (sp != regs->u_regs[UREG_FP]) { - unsigned long csp; - - csp = clone_stackframe(sp, regs->u_regs[UREG_FP]); - if (!csp) - return -EFAULT; - t->kregs->u_regs[UREG_FP] = csp; - } - if (t->utraps) - t->utraps[0]++; + parent_sf = ((struct sparc_stackf *) regs) - 1; + memcpy(child_trap_frame, parent_sf, child_stack_sz); + if (t->flags & _TIF_32BIT) { + sp &= 0x00000000ffffffffUL; + regs->u_regs[UREG_FP] &= 0x00000000ffffffffUL; } + t->kregs->u_regs[UREG_FP] = sp; + __thread_flag_byte_ptr(t)[TI_FLAG_BYTE_CWP] = + (regs->tstate + 1) & TSTATE_CWP; + t->current_ds = ASI_AIUS; + if (sp != regs->u_regs[UREG_FP]) { + unsigned long csp; + + csp = clone_stackframe(sp, regs->u_regs[UREG_FP]); + if (!csp) + return -EFAULT; + t->kregs->u_regs[UREG_FP] = csp; + } + if (t->utraps) + t->utraps[0]++; /* Set the return value for the child. */ t->kregs->u_regs[UREG_I0] = current->pid; @@ -690,45 +684,6 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, return 0; } -/* - * This is the mechanism for creating a new kernel thread. - * - * NOTE! Only a kernel-only process(ie the swapper or direct descendants - * who haven't done an "execve()") should use this: it will work within - * a system call from a "real" process, but the process memory space will - * not be freed until both the parent and the child have exited. - */ -pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) -{ - long retval; - - /* If the parent runs before fn(arg) is called by the child, - * the input registers of this function can be clobbered. - * So we stash 'fn' and 'arg' into global registers which - * will not be modified by the parent. - */ - __asm__ __volatile__("mov %4, %%g2\n\t" /* Save FN into global */ - "mov %5, %%g3\n\t" /* Save ARG into global */ - "mov %1, %%g1\n\t" /* Clone syscall nr. */ - "mov %2, %%o0\n\t" /* Clone flags. */ - "mov 0, %%o1\n\t" /* usp arg == 0 */ - "t 0x6d\n\t" /* Linux/Sparc clone(). */ - "brz,a,pn %%o1, 1f\n\t" /* Parent, just return. */ - " mov %%o0, %0\n\t" - "jmpl %%g2, %%o7\n\t" /* Call the function. */ - " mov %%g3, %%o0\n\t" /* Set arg in delay. */ - "mov %3, %%g1\n\t" - "t 0x6d\n\t" /* Linux/Sparc exit(). */ - /* Notreached by child. */ - "1:" : - "=r" (retval) : - "i" (__NR_clone), "r" (flags | CLONE_VM | CLONE_UNTRACED), - "i" (__NR_exit), "r" (fn), "r" (arg) : - "g1", "g2", "g3", "o0", "o1", "memory", "cc"); - return retval; -} -EXPORT_SYMBOL(kernel_thread); - typedef struct { union { unsigned int pr_regs[32]; @@ -795,41 +750,6 @@ int dump_fpu (struct pt_regs * regs, elf_fpregset_t * fpregs) } EXPORT_SYMBOL(dump_fpu); -/* - * sparc_execve() executes a new program after the asm stub has set - * things up for us. This should basically do what I want it to. - */ -asmlinkage int sparc_execve(struct pt_regs *regs) -{ - int error, base = 0; - struct filename *filename; - - /* User register window flush is done by entry.S */ - - /* Check for indirect call. */ - if (regs->u_regs[UREG_G1] == 0) - base = 1; - - filename = getname((char __user *)regs->u_regs[base + UREG_I0]); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - goto out; - error = do_execve(filename->name, - (const char __user *const __user *) - regs->u_regs[base + UREG_I1], - (const char __user *const __user *) - regs->u_regs[base + UREG_I2], regs); - putname(filename); - if (!error) { - fprs_write(0); - current_thread_info()->xfsr[0] = 0; - current_thread_info()->fpsaved[0] = 0; - regs->tstate &= ~TSTATE_PEF; - } -out: - return error; -} - unsigned long get_wchan(struct task_struct *task) { unsigned long pc, fp, bias = 0; diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index 484dabac7045..7ff45e4ba681 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -151,7 +151,7 @@ static int regwindow64_get(struct task_struct *target, { unsigned long rw_addr = regs->u_regs[UREG_I6]; - if (test_tsk_thread_flag(current, TIF_32BIT)) { + if (!test_thread_64bit_stack(rw_addr)) { struct reg_window32 win32; int i; @@ -176,7 +176,7 @@ static int regwindow64_set(struct task_struct *target, { unsigned long rw_addr = regs->u_regs[UREG_I6]; - if (test_tsk_thread_flag(current, TIF_32BIT)) { + if (!test_thread_64bit_stack(rw_addr)) { struct reg_window32 win32; int i; diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index 0800e71d8a88..0eaf0059aaef 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -316,6 +316,25 @@ static void __init popc_patch(void) } } +static void __init pause_patch(void) +{ + struct pause_patch_entry *p; + + p = &__pause_3insn_patch; + while (p < &__pause_3insn_patch_end) { + unsigned long i, addr = p->addr; + + for (i = 0; i < 3; i++) { + *(unsigned int *) (addr + (i * 4)) = p->insns[i]; + wmb(); + __asm__ __volatile__("flush %0" + : : "r" (addr + (i * 4))); + } + + p++; + } +} + #ifdef CONFIG_SMP void __init boot_cpu_id_too_large(int cpu) { @@ -528,6 +547,8 @@ static void __init init_sparc64_elf_hwcap(void) if (sparc64_elf_hwcap & AV_SPARC_POPC) popc_patch(); + if (sparc64_elf_hwcap & AV_SPARC_PAUSE) + pause_patch(); } void __init setup_arch(char **cmdline_p) diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c index 867de2f8189c..689e1ba62809 100644 --- a/arch/sparc/kernel/signal_64.c +++ b/arch/sparc/kernel/signal_64.c @@ -295,9 +295,7 @@ void do_rt_sigreturn(struct pt_regs *regs) err |= restore_fpu_state(regs, fpu_save); err |= __copy_from_user(&set, &sf->mask, sizeof(sigset_t)); - err |= do_sigaltstack(&sf->stack, NULL, (unsigned long)sf); - - if (err) + if (err || do_sigaltstack(&sf->stack, NULL, (unsigned long)sf) == -EFAULT) goto segv; err |= __get_user(rwin_save, &sf->rwin_save); diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S index 44025f4ba41f..8475a474273a 100644 --- a/arch/sparc/kernel/sys32.S +++ b/arch/sparc/kernel/sys32.S @@ -47,7 +47,7 @@ STUB: sra REG1, 0, REG1; \ sra REG4, 0, REG4 SIGN1(sys32_exit, sparc_exit, %o0) -SIGN1(sys32_exit_group, sys_exit_group, %o0) +SIGN1(sys32_exit_group, sparc_exit_group, %o0) SIGN1(sys32_wait4, compat_sys_wait4, %o2) SIGN1(sys32_creat, sys_creat, %o1) SIGN1(sys32_mknod, sys_mknod, %o1) diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index c3239811a1b5..03c7e929ec34 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -396,42 +396,6 @@ asmlinkage long compat_sys_rt_sigaction(int sig, return ret; } -/* - * sparc32_execve() executes a new program after the asm stub has set - * things up for us. This should basically do what I want it to. - */ -asmlinkage long sparc32_execve(struct pt_regs *regs) -{ - int error, base = 0; - struct filename *filename; - - /* User register window flush is done by entry.S */ - - /* Check for indirect call. */ - if ((u32)regs->u_regs[UREG_G1] == 0) - base = 1; - - filename = getname(compat_ptr(regs->u_regs[base + UREG_I0])); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - goto out; - - error = compat_do_execve(filename->name, - compat_ptr(regs->u_regs[base + UREG_I1]), - compat_ptr(regs->u_regs[base + UREG_I2]), regs); - - putname(filename); - - if (!error) { - fprs_write(0); - current_thread_info()->xfsr[0] = 0; - current_thread_info()->fpsaved[0] = 0; - regs->tstate &= ~TSTATE_PEF; - } -out: - return error; -} - #ifdef CONFIG_MODULES asmlinkage long sys32_init_module(void __user *umod, u32 len, diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c index 0c9b31b22e07..2da0bdcae52f 100644 --- a/arch/sparc/kernel/sys_sparc_32.c +++ b/arch/sparc/kernel/sys_sparc_32.c @@ -34,11 +34,9 @@ asmlinkage unsigned long sys_getpagesize(void) return PAGE_SIZE; /* Possibly older binaries want 8192 on sun4's? */ } -#define COLOUR_ALIGN(addr) (((addr)+SHMLBA-1)&~(SHMLBA-1)) - unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { - struct vm_area_struct * vmm; + struct vm_unmapped_area_info info; if (flags & MAP_FIXED) { /* We do not accept a shared mapping if it would violate @@ -56,21 +54,14 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi if (!addr) addr = TASK_UNMAPPED_BASE; - if (flags & MAP_SHARED) - addr = COLOUR_ALIGN(addr); - else - addr = PAGE_ALIGN(addr); - - for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) { - /* At this point: (!vmm || addr < vmm->vm_end). */ - if (TASK_SIZE - PAGE_SIZE - len < addr) - return -ENOMEM; - if (!vmm || addr + len <= vmm->vm_start) - return addr; - addr = vmm->vm_end; - if (flags & MAP_SHARED) - addr = COLOUR_ALIGN(addr); - } + info.flags = 0; + info.length = len; + info.low_limit = addr; + info.high_limit = TASK_SIZE; + info.align_mask = (flags & MAP_SHARED) ? + (PAGE_MASK & (SHMLBA - 1)) : 0; + info.align_offset = pgoff << PAGE_SHIFT; + return vm_unmapped_area(&info); } /* @@ -258,27 +249,3 @@ out: up_read(&uts_sem); return err; } - -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) -{ - long __res; - register long __g1 __asm__ ("g1") = __NR_execve; - register long __o0 __asm__ ("o0") = (long)(filename); - register long __o1 __asm__ ("o1") = (long)(argv); - register long __o2 __asm__ ("o2") = (long)(envp); - asm volatile ("t 0x10\n\t" - "bcc 1f\n\t" - "mov %%o0, %0\n\t" - "sub %%g0, %%o0, %0\n\t" - "1:\n\t" - : "=r" (__res), "=&r" (__o0) - : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) - : "cc"); - return __res; -} diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 11c6c9603e71..708bc29d36a8 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -75,7 +75,7 @@ static inline int invalid_64bit_range(unsigned long addr, unsigned long len) * the spitfire/niagara VA-hole. */ -static inline unsigned long COLOUR_ALIGN(unsigned long addr, +static inline unsigned long COLOR_ALIGN(unsigned long addr, unsigned long pgoff) { unsigned long base = (addr+SHMLBA-1)&~(SHMLBA-1); @@ -84,24 +84,13 @@ static inline unsigned long COLOUR_ALIGN(unsigned long addr, return base + off; } -static inline unsigned long COLOUR_ALIGN_DOWN(unsigned long addr, - unsigned long pgoff) -{ - unsigned long base = addr & ~(SHMLBA-1); - unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1); - - if (base + off <= addr) - return base + off; - return base - off; -} - unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { struct mm_struct *mm = current->mm; struct vm_area_struct * vma; unsigned long task_size = TASK_SIZE; - unsigned long start_addr; int do_color_align; + struct vm_unmapped_area_info info; if (flags & MAP_FIXED) { /* We do not accept a shared mapping if it would violate @@ -124,7 +113,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi if (addr) { if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); + addr = COLOR_ALIGN(addr, pgoff); else addr = PAGE_ALIGN(addr); @@ -134,50 +123,22 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi return addr; } - if (len > mm->cached_hole_size) { - start_addr = addr = mm->free_area_cache; - } else { - start_addr = addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; + info.flags = 0; + info.length = len; + info.low_limit = TASK_UNMAPPED_BASE; + info.high_limit = min(task_size, VA_EXCLUDE_START); + info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; + info.align_offset = pgoff << PAGE_SHIFT; + addr = vm_unmapped_area(&info); + + if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) { + VM_BUG_ON(addr != -ENOMEM); + info.low_limit = VA_EXCLUDE_END; + info.high_limit = task_size; + addr = vm_unmapped_area(&info); } - task_size -= len; - -full_search: - if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); - else - addr = PAGE_ALIGN(addr); - - for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { - /* At this point: (!vma || addr < vma->vm_end). */ - if (addr < VA_EXCLUDE_START && - (addr + len) >= VA_EXCLUDE_START) { - addr = VA_EXCLUDE_END; - vma = find_vma(mm, VA_EXCLUDE_END); - } - if (unlikely(task_size < addr)) { - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; - goto full_search; - } - return -ENOMEM; - } - if (likely(!vma || addr + len <= vma->vm_start)) { - /* - * Remember the place where we stopped the search: - */ - mm->free_area_cache = addr + len; - return addr; - } - if (addr + mm->cached_hole_size < vma->vm_start) - mm->cached_hole_size = vma->vm_start - addr; - - addr = vma->vm_end; - if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); - } + return addr; } unsigned long @@ -190,6 +151,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, unsigned long task_size = STACK_TOP32; unsigned long addr = addr0; int do_color_align; + struct vm_unmapped_area_info info; /* This should only ever run for 32-bit processes. */ BUG_ON(!test_thread_flag(TIF_32BIT)); @@ -214,7 +176,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, /* requesting a specific address */ if (addr) { if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); + addr = COLOR_ALIGN(addr, pgoff); else addr = PAGE_ALIGN(addr); @@ -224,73 +186,27 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, return addr; } - /* check if free_area_cache is useful for us */ - if (len <= mm->cached_hole_size) { - mm->cached_hole_size = 0; - mm->free_area_cache = mm->mmap_base; - } + info.flags = VM_UNMAPPED_AREA_TOPDOWN; + info.length = len; + info.low_limit = PAGE_SIZE; + info.high_limit = mm->mmap_base; + info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; + info.align_offset = pgoff << PAGE_SHIFT; + addr = vm_unmapped_area(&info); - /* either no address requested or can't fit in requested address hole */ - addr = mm->free_area_cache; - if (do_color_align) { - unsigned long base = COLOUR_ALIGN_DOWN(addr-len, pgoff); - - addr = base + len; - } - - /* make sure it can fit in the remaining address space */ - if (likely(addr > len)) { - vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr-len); - } - } - - if (unlikely(mm->mmap_base < len)) - goto bottomup; - - addr = mm->mmap_base-len; - if (do_color_align) - addr = COLOUR_ALIGN_DOWN(addr, pgoff); - - do { - /* - * Lookup failure means no vma is above this address, - * else if new region fits below vma->vm_start, - * return with success: - */ - vma = find_vma(mm, addr); - if (likely(!vma || addr+len <= vma->vm_start)) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr); - } - - /* remember the largest hole we saw so far */ - if (addr + mm->cached_hole_size < vma->vm_start) - mm->cached_hole_size = vma->vm_start - addr; - - /* try just below the current vma->vm_start */ - addr = vma->vm_start-len; - if (do_color_align) - addr = COLOUR_ALIGN_DOWN(addr, pgoff); - } while (likely(len < vma->vm_start)); - -bottomup: /* * A failed mmap() very likely causes application failure, * so fall back to the bottom-up function here. This scenario * can happen with large stack limits and large mmap() * allocations. */ - mm->cached_hole_size = ~0UL; - mm->free_area_cache = TASK_UNMAPPED_BASE; - addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); - /* - * Restore the topdown base: - */ - mm->free_area_cache = mm->mmap_base; - mm->cached_hole_size = ~0UL; + if (addr & ~PAGE_MASK) { + VM_BUG_ON(addr != -ENOMEM); + info.flags = 0; + info.low_limit = TASK_UNMAPPED_BASE; + info.high_limit = STACK_TOP32; + addr = vm_unmapped_area(&info); + } return addr; } @@ -730,24 +646,7 @@ SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act, return ret; } -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) +asmlinkage long sys_kern_features(void) { - long __res; - register long __g1 __asm__ ("g1") = __NR_execve; - register long __o0 __asm__ ("o0") = (long)(filename); - register long __o1 __asm__ ("o1") = (long)(argv); - register long __o2 __asm__ ("o2") = (long)(envp); - asm volatile ("t 0x6d\n\t" - "sub %%g0, %%o0, %0\n\t" - "movcc %%xcc, %%o0, %0\n\t" - : "=r" (__res), "=&r" (__o0) - : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) - : "cc"); - return __res; + return KERN_FEATURE_MIXED_MODE_STACK; } diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S index 7f5f65d0b3fd..e0fed7711a94 100644 --- a/arch/sparc/kernel/syscalls.S +++ b/arch/sparc/kernel/syscalls.S @@ -1,23 +1,19 @@ /* SunOS's execv() call only specifies the argv argument, the * environment settings are the same as the calling processes. */ -sys_execve: - sethi %hi(sparc_execve), %g1 - ba,pt %xcc, execve_merge - or %g1, %lo(sparc_execve), %g1 +sys64_execve: + set sys_execve, %g1 + jmpl %g1, %g0 + flushw #ifdef CONFIG_COMPAT sunos_execv: - stx %g0, [%sp + PTREGS_OFF + PT_V9_I2] + mov %g0, %o2 sys32_execve: - sethi %hi(sparc32_execve), %g1 - or %g1, %lo(sparc32_execve), %g1 -#endif - -execve_merge: - flushw + set compat_sys_execve, %g1 jmpl %g1, %g0 - add %sp, PTREGS_OFF, %o0 + flushw +#endif .align 32 sys_sparc_pipe: @@ -112,16 +108,31 @@ sys_clone: ret_from_syscall: /* Clear current_thread_info()->new_child. */ stb %g0, [%g6 + TI_NEW_CHILD] - ldx [%g6 + TI_FLAGS], %l0 call schedule_tail mov %g7, %o0 + ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0 + brnz,pt %o0, ret_sys_call + ldx [%g6 + TI_FLAGS], %l0 + ldx [%sp + PTREGS_OFF + PT_V9_G1], %l1 + call %l1 + ldx [%sp + PTREGS_OFF + PT_V9_G2], %o0 ba,pt %xcc, ret_sys_call - ldx [%sp + PTREGS_OFF + PT_V9_I0], %o0 + mov 0, %o0 + + .globl sparc_exit_group + .type sparc_exit_group,#function +sparc_exit_group: + sethi %hi(sys_exit_group), %g7 + ba,pt %xcc, 1f + or %g7, %lo(sys_exit_group), %g7 + .size sparc_exit_group,.-sparc_exit_group .globl sparc_exit .type sparc_exit,#function sparc_exit: - rdpr %pstate, %g2 + sethi %hi(sys_exit), %g7 + or %g7, %lo(sys_exit), %g7 +1: rdpr %pstate, %g2 wrpr %g2, PSTATE_IE, %pstate rdpr %otherwin, %g1 rdpr %cansave, %g3 @@ -129,7 +140,7 @@ sparc_exit: wrpr %g3, 0x0, %cansave wrpr %g0, 0x0, %otherwin wrpr %g2, 0x0, %pstate - ba,pt %xcc, sys_exit + jmpl %g7, %g0 stb %g0, [%g6 + TI_WSAVED] .size sparc_exit,.-sparc_exit @@ -222,7 +233,6 @@ ret_sys_call: ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc 2: - stb %g0, [%g6 + TI_SYS_NOERROR] /* System call success, clear Carry condition code. */ andn %g3, %g2, %g3 3: diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S index 63402f9e9f51..5147f574f125 100644 --- a/arch/sparc/kernel/systbls_32.S +++ b/arch/sparc/kernel/systbls_32.S @@ -85,3 +85,4 @@ sys_call_table: /*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init /*330*/ .long sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime /*335*/ .long sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev +/*340*/ .long sys_ni_syscall, sys_kcmp diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index 3a58e0d66f51..cdbd9b817751 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -86,6 +86,7 @@ sys_call_table32: .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg, sys_fanotify_init /*330*/ .word sys32_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, compat_sys_open_by_handle_at, compat_sys_clock_adjtime .word sys_syncfs, compat_sys_sendmmsg, sys_setns, compat_sys_process_vm_readv, compat_sys_process_vm_writev +/*340*/ .word sys_kern_features, sys_kcmp #endif /* CONFIG_COMPAT */ @@ -106,7 +107,7 @@ sys_call_table: /*40*/ .word sys_newlstat, sys_dup, sys_sparc_pipe, sys_times, sys_nis_syscall .word sys_umount, sys_setgid, sys_getgid, sys_signal, sys_geteuid /*50*/ .word sys_getegid, sys_acct, sys_memory_ordering, sys_nis_syscall, sys_ioctl - .word sys_reboot, sys_nis_syscall, sys_symlink, sys_readlink, sys_execve + .word sys_reboot, sys_nis_syscall, sys_symlink, sys_readlink, sys64_execve /*60*/ .word sys_umask, sys_chroot, sys_newfstat, sys_fstat64, sys_getpagesize .word sys_msync, sys_vfork, sys_pread64, sys_pwrite64, sys_nis_syscall /*70*/ .word sys_nis_syscall, sys_mmap, sys_nis_syscall, sys_64_munmap, sys_mprotect @@ -132,7 +133,7 @@ sys_call_table: /*170*/ .word sys_lsetxattr, sys_fsetxattr, sys_getxattr, sys_lgetxattr, sys_getdents .word sys_setsid, sys_fchdir, sys_fgetxattr, sys_listxattr, sys_llistxattr /*180*/ .word sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_nis_syscall, sys_ni_syscall - .word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sys_newuname + .word sys_setpgid, sys_fremovexattr, sys_tkill, sparc_exit_group, sys_newuname /*190*/ .word sys_init_module, sys_sparc64_personality, sys_remap_file_pages, sys_epoll_create, sys_epoll_ctl .word sys_epoll_wait, sys_ioprio_set, sys_getppid, sys_nis_syscall, sys_sgetmask /*200*/ .word sys_ssetmask, sys_nis_syscall, sys_newlstat, sys_uselib, sys_nis_syscall @@ -163,3 +164,4 @@ sys_call_table: .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init /*330*/ .word sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime .word sys_syncfs, sys_sendmmsg, sys_setns, sys_process_vm_readv, sys_process_vm_writev +/*340*/ .word sys_kern_features, sys_kcmp diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c index b66a77968f35..e7ecf1507d90 100644 --- a/arch/sparc/kernel/traps_64.c +++ b/arch/sparc/kernel/traps_64.c @@ -2688,8 +2688,8 @@ void __init trap_init(void) TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) || TI_NEW_CHILD != offsetof(struct thread_info, new_child) || - TI_SYS_NOERROR != offsetof(struct thread_info, - syscall_noerror) || + TI_CURRENT_DS != offsetof(struct thread_info, + current_ds) || TI_RESTART_BLOCK != offsetof(struct thread_info, restart_block) || TI_KUNA_REGS != offsetof(struct thread_info, diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c index f81d038f7340..8201c25e7669 100644 --- a/arch/sparc/kernel/unaligned_64.c +++ b/arch/sparc/kernel/unaligned_64.c @@ -113,21 +113,24 @@ static inline long sign_extend_imm13(long imm) static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs) { - unsigned long value; + unsigned long value, fp; if (reg < 16) return (!reg ? 0 : regs->u_regs[reg]); + + fp = regs->u_regs[UREG_FP]; + if (regs->tstate & TSTATE_PRIV) { struct reg_window *win; - win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS); + win = (struct reg_window *)(fp + STACK_BIAS); value = win->locals[reg - 16]; - } else if (test_thread_flag(TIF_32BIT)) { + } else if (!test_thread_64bit_stack(fp)) { struct reg_window32 __user *win32; - win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); + win32 = (struct reg_window32 __user *)((unsigned long)((u32)fp)); get_user(value, &win32->locals[reg - 16]); } else { struct reg_window __user *win; - win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS); + win = (struct reg_window __user *)(fp + STACK_BIAS); get_user(value, &win->locals[reg - 16]); } return value; @@ -135,19 +138,24 @@ static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs) static unsigned long *fetch_reg_addr(unsigned int reg, struct pt_regs *regs) { + unsigned long fp; + if (reg < 16) return ®s->u_regs[reg]; + + fp = regs->u_regs[UREG_FP]; + if (regs->tstate & TSTATE_PRIV) { struct reg_window *win; - win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS); + win = (struct reg_window *)(fp + STACK_BIAS); return &win->locals[reg - 16]; - } else if (test_thread_flag(TIF_32BIT)) { + } else if (!test_thread_64bit_stack(fp)) { struct reg_window32 *win32; - win32 = (struct reg_window32 *)((unsigned long)((u32)regs->u_regs[UREG_FP])); + win32 = (struct reg_window32 *)((unsigned long)((u32)fp)); return (unsigned long *)&win32->locals[reg - 16]; } else { struct reg_window *win; - win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS); + win = (struct reg_window *)(fp + STACK_BIAS); return &win->locals[reg - 16]; } } @@ -392,13 +400,15 @@ int handle_popc(u32 insn, struct pt_regs *regs) if (rd) regs->u_regs[rd] = ret; } else { - if (test_thread_flag(TIF_32BIT)) { + unsigned long fp = regs->u_regs[UREG_FP]; + + if (!test_thread_64bit_stack(fp)) { struct reg_window32 __user *win32; - win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); + win32 = (struct reg_window32 __user *)((unsigned long)((u32)fp)); put_user(ret, &win32->locals[rd - 16]); } else { struct reg_window __user *win; - win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS); + win = (struct reg_window __user *)(fp + STACK_BIAS); put_user(ret, &win->locals[rd - 16]); } } @@ -554,7 +564,7 @@ void handle_ld_nf(u32 insn, struct pt_regs *regs) reg[0] = 0; if ((insn & 0x780000) == 0x180000) reg[1] = 0; - } else if (test_thread_flag(TIF_32BIT)) { + } else if (!test_thread_64bit_stack(regs->u_regs[UREG_FP])) { put_user(0, (int __user *) reg); if ((insn & 0x780000) == 0x180000) put_user(0, ((int __user *) reg) + 1); diff --git a/arch/sparc/kernel/visemul.c b/arch/sparc/kernel/visemul.c index 08e074b7eb6a..c096c624ac4d 100644 --- a/arch/sparc/kernel/visemul.c +++ b/arch/sparc/kernel/visemul.c @@ -149,21 +149,24 @@ static inline void maybe_flush_windows(unsigned int rs1, unsigned int rs2, static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs) { - unsigned long value; + unsigned long value, fp; if (reg < 16) return (!reg ? 0 : regs->u_regs[reg]); + + fp = regs->u_regs[UREG_FP]; + if (regs->tstate & TSTATE_PRIV) { struct reg_window *win; - win = (struct reg_window *)(regs->u_regs[UREG_FP] + STACK_BIAS); + win = (struct reg_window *)(fp + STACK_BIAS); value = win->locals[reg - 16]; - } else if (test_thread_flag(TIF_32BIT)) { + } else if (!test_thread_64bit_stack(fp)) { struct reg_window32 __user *win32; - win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); + win32 = (struct reg_window32 __user *)((unsigned long)((u32)fp)); get_user(value, &win32->locals[reg - 16]); } else { struct reg_window __user *win; - win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS); + win = (struct reg_window __user *)(fp + STACK_BIAS); get_user(value, &win->locals[reg - 16]); } return value; @@ -172,16 +175,18 @@ static unsigned long fetch_reg(unsigned int reg, struct pt_regs *regs) static inline unsigned long __user *__fetch_reg_addr_user(unsigned int reg, struct pt_regs *regs) { + unsigned long fp = regs->u_regs[UREG_FP]; + BUG_ON(reg < 16); BUG_ON(regs->tstate & TSTATE_PRIV); - if (test_thread_flag(TIF_32BIT)) { + if (!test_thread_64bit_stack(fp)) { struct reg_window32 __user *win32; - win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); + win32 = (struct reg_window32 __user *)((unsigned long)((u32)fp)); return (unsigned long __user *)&win32->locals[reg - 16]; } else { struct reg_window __user *win; - win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS); + win = (struct reg_window __user *)(fp + STACK_BIAS); return &win->locals[reg - 16]; } } @@ -204,7 +209,7 @@ static void store_reg(struct pt_regs *regs, unsigned long val, unsigned long rd) } else { unsigned long __user *rd_user = __fetch_reg_addr_user(rd, regs); - if (test_thread_flag(TIF_32BIT)) + if (!test_thread_64bit_stack(regs->u_regs[UREG_FP])) __put_user((u32)val, (u32 __user *)rd_user); else __put_user(val, rd_user); diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S index 89c2c29f154b..0bacceb19150 100644 --- a/arch/sparc/kernel/vmlinux.lds.S +++ b/arch/sparc/kernel/vmlinux.lds.S @@ -132,6 +132,11 @@ SECTIONS *(.popc_6insn_patch) __popc_6insn_patch_end = .; } + .pause_3insn_patch : { + __pause_3insn_patch = .; + *(.pause_3insn_patch) + __pause_3insn_patch_end = .; + } PERCPU_SECTION(SMP_CACHE_BYTES) . = ALIGN(PAGE_SIZE); diff --git a/arch/sparc/kernel/winfixup.S b/arch/sparc/kernel/winfixup.S index a6b0863c27df..1e67ce958369 100644 --- a/arch/sparc/kernel/winfixup.S +++ b/arch/sparc/kernel/winfixup.S @@ -43,6 +43,8 @@ spill_fixup_mna: spill_fixup_dax: TRAP_LOAD_THREAD_REG(%g6, %g1) ldx [%g6 + TI_FLAGS], %g1 + andcc %sp, 0x1, %g0 + movne %icc, 0, %g1 andcc %g1, _TIF_32BIT, %g0 ldub [%g6 + TI_WSAVED], %g1 sll %g1, 3, %g3 diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S index 4d502da3de78..85c233d0a340 100644 --- a/arch/sparc/lib/atomic_64.S +++ b/arch/sparc/lib/atomic_64.S @@ -1,6 +1,6 @@ /* atomic.S: These things are too big to do inline. * - * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net) + * Copyright (C) 1999, 2007 2012 David S. Miller (davem@davemloft.net) */ #include <linux/linkage.h> @@ -117,3 +117,17 @@ ENTRY(atomic64_sub_ret) /* %o0 = decrement, %o1 = atomic_ptr */ sub %g1, %o0, %o0 2: BACKOFF_SPIN(%o2, %o3, 1b) ENDPROC(atomic64_sub_ret) + +ENTRY(atomic64_dec_if_positive) /* %o0 = atomic_ptr */ + BACKOFF_SETUP(%o2) +1: ldx [%o0], %g1 + brlez,pn %g1, 3f + sub %g1, 1, %g7 + casx [%o0], %g1, %g7 + cmp %g1, %g7 + bne,pn %xcc, BACKOFF_LABEL(2f, 1b) + nop +3: retl + sub %g1, 1, %o0 +2: BACKOFF_SPIN(%o2, %o3, 1b) +ENDPROC(atomic64_dec_if_positive) diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c index ee31b884c61b..0c4e35e522fa 100644 --- a/arch/sparc/lib/ksyms.c +++ b/arch/sparc/lib/ksyms.c @@ -116,6 +116,7 @@ EXPORT_SYMBOL(atomic64_add); EXPORT_SYMBOL(atomic64_add_ret); EXPORT_SYMBOL(atomic64_sub); EXPORT_SYMBOL(atomic64_sub_ret); +EXPORT_SYMBOL(atomic64_dec_if_positive); /* Atomic bit operations. */ EXPORT_SYMBOL(test_and_set_bit); diff --git a/arch/sparc/math-emu/math_64.c b/arch/sparc/math-emu/math_64.c index 1704068da928..034aadbff036 100644 --- a/arch/sparc/math-emu/math_64.c +++ b/arch/sparc/math-emu/math_64.c @@ -320,7 +320,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f, bool illegal_insn_trap) XR = 0; else if (freg < 16) XR = regs->u_regs[freg]; - else if (test_thread_flag(TIF_32BIT)) { + else if (!test_thread_64bit_stack(regs->u_regs[UREG_FP])) { struct reg_window32 __user *win32; flushw_user (); win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP])); diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c index f76f83d5ac63..d2b59441ebdd 100644 --- a/arch/sparc/mm/hugetlbpage.c +++ b/arch/sparc/mm/hugetlbpage.c @@ -30,55 +30,28 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp, unsigned long pgoff, unsigned long flags) { - struct mm_struct *mm = current->mm; - struct vm_area_struct * vma; unsigned long task_size = TASK_SIZE; - unsigned long start_addr; + struct vm_unmapped_area_info info; if (test_thread_flag(TIF_32BIT)) task_size = STACK_TOP32; - if (unlikely(len >= VA_EXCLUDE_START)) - return -ENOMEM; - if (len > mm->cached_hole_size) { - start_addr = addr = mm->free_area_cache; - } else { - start_addr = addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; + info.flags = 0; + info.length = len; + info.low_limit = TASK_UNMAPPED_BASE; + info.high_limit = min(task_size, VA_EXCLUDE_START); + info.align_mask = PAGE_MASK & ~HPAGE_MASK; + info.align_offset = 0; + addr = vm_unmapped_area(&info); + + if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) { + VM_BUG_ON(addr != -ENOMEM); + info.low_limit = VA_EXCLUDE_END; + info.high_limit = task_size; + addr = vm_unmapped_area(&info); } - task_size -= len; - -full_search: - addr = ALIGN(addr, HPAGE_SIZE); - - for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { - /* At this point: (!vma || addr < vma->vm_end). */ - if (addr < VA_EXCLUDE_START && - (addr + len) >= VA_EXCLUDE_START) { - addr = VA_EXCLUDE_END; - vma = find_vma(mm, VA_EXCLUDE_END); - } - if (unlikely(task_size < addr)) { - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; - goto full_search; - } - return -ENOMEM; - } - if (likely(!vma || addr + len <= vma->vm_start)) { - /* - * Remember the place where we stopped the search: - */ - mm->free_area_cache = addr + len; - return addr; - } - if (addr + mm->cached_hole_size < vma->vm_start) - mm->cached_hole_size = vma->vm_start - addr; - - addr = ALIGN(vma->vm_end, HPAGE_SIZE); - } + return addr; } static unsigned long @@ -87,71 +60,34 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, const unsigned long pgoff, const unsigned long flags) { - struct vm_area_struct *vma; struct mm_struct *mm = current->mm; unsigned long addr = addr0; + struct vm_unmapped_area_info info; /* This should only ever run for 32-bit processes. */ BUG_ON(!test_thread_flag(TIF_32BIT)); - /* check if free_area_cache is useful for us */ - if (len <= mm->cached_hole_size) { - mm->cached_hole_size = 0; - mm->free_area_cache = mm->mmap_base; - } - - /* either no address requested or can't fit in requested address hole */ - addr = mm->free_area_cache & HPAGE_MASK; - - /* make sure it can fit in the remaining address space */ - if (likely(addr > len)) { - vma = find_vma(mm, addr-len); - if (!vma || addr <= vma->vm_start) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr-len); - } - } - - if (unlikely(mm->mmap_base < len)) - goto bottomup; - - addr = (mm->mmap_base-len) & HPAGE_MASK; - - do { - /* - * Lookup failure means no vma is above this address, - * else if new region fits below vma->vm_start, - * return with success: - */ - vma = find_vma(mm, addr); - if (likely(!vma || addr+len <= vma->vm_start)) { - /* remember the address as a hint for next time */ - return (mm->free_area_cache = addr); - } - - /* remember the largest hole we saw so far */ - if (addr + mm->cached_hole_size < vma->vm_start) - mm->cached_hole_size = vma->vm_start - addr; - - /* try just below the current vma->vm_start */ - addr = (vma->vm_start-len) & HPAGE_MASK; - } while (likely(len < vma->vm_start)); + info.flags = VM_UNMAPPED_AREA_TOPDOWN; + info.length = len; + info.low_limit = PAGE_SIZE; + info.high_limit = mm->mmap_base; + info.align_mask = PAGE_MASK & ~HPAGE_MASK; + info.align_offset = 0; + addr = vm_unmapped_area(&info); -bottomup: /* * A failed mmap() very likely causes application failure, * so fall back to the bottom-up function here. This scenario * can happen with large stack limits and large mmap() * allocations. */ - mm->cached_hole_size = ~0UL; - mm->free_area_cache = TASK_UNMAPPED_BASE; - addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags); - /* - * Restore the topdown base: - */ - mm->free_area_cache = mm->mmap_base; - mm->cached_hole_size = ~0UL; + if (addr & ~PAGE_MASK) { + VM_BUG_ON(addr != -ENOMEM); + info.flags = 0; + info.low_limit = TASK_UNMAPPED_BASE; + info.high_limit = STACK_TOP32; + addr = vm_unmapped_area(&info); + } return addr; } diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 9e28a118e6a4..85be1ca539b2 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -624,7 +624,7 @@ static void __init inherit_prom_mappings(void) void prom_world(int enter) { if (!enter) - set_fs((mm_segment_t) { get_thread_current_ds() }); + set_fs(get_fs()); __asm__ __volatile__("flushw"); } diff --git a/arch/sparc/net/bpf_jit_comp.c b/arch/sparc/net/bpf_jit_comp.c index 28368701ef79..3109ca684a99 100644 --- a/arch/sparc/net/bpf_jit_comp.c +++ b/arch/sparc/net/bpf_jit_comp.c @@ -3,6 +3,7 @@ #include <linux/netdevice.h> #include <linux/filter.h> #include <linux/cache.h> +#include <linux/if_vlan.h> #include <asm/cacheflush.h> #include <asm/ptrace.h> @@ -312,6 +313,12 @@ do { *prog++ = BR_OPC | WDISP22(OFF); \ #define emit_addi(R1, IMM, R3) \ *prog++ = (ADD | IMMED | RS1(R1) | S13(IMM) | RD(R3)) +#define emit_and(R1, R2, R3) \ + *prog++ = (AND | RS1(R1) | RS2(R2) | RD(R3)) + +#define emit_andi(R1, IMM, R3) \ + *prog++ = (AND | IMMED | RS1(R1) | S13(IMM) | RD(R3)) + #define emit_alloc_stack(SZ) \ *prog++ = (SUB | IMMED | RS1(SP) | S13(SZ) | RD(SP)) @@ -415,6 +422,8 @@ void bpf_jit_compile(struct sk_filter *fp) case BPF_S_ANC_IFINDEX: case BPF_S_ANC_MARK: case BPF_S_ANC_RXHASH: + case BPF_S_ANC_VLAN_TAG: + case BPF_S_ANC_VLAN_TAG_PRESENT: case BPF_S_ANC_CPU: case BPF_S_ANC_QUEUE: case BPF_S_LD_W_ABS: @@ -600,6 +609,16 @@ void bpf_jit_compile(struct sk_filter *fp) case BPF_S_ANC_RXHASH: emit_skb_load32(rxhash, r_A); break; + case BPF_S_ANC_VLAN_TAG: + case BPF_S_ANC_VLAN_TAG_PRESENT: + emit_skb_load16(vlan_tci, r_A); + if (filter[i].code == BPF_S_ANC_VLAN_TAG) { + emit_andi(r_A, VLAN_VID_MASK, r_A); + } else { + emit_loadimm(VLAN_TAG_PRESENT, r_TMP); + emit_and(r_A, r_TMP, r_A); + } + break; case BPF_S_LD_IMM: emit_loadimm(K, r_A); |