diff options
Diffstat (limited to 'arch/sparc')
45 files changed, 569 insertions, 277 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index e6f2a38d2e61..490b2c95c212 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -45,13 +45,11 @@ config SPARC select LOCKDEP_SMALL if LOCKDEP select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH - select HAVE_MEMBLOCK - select NO_BOOTMEM config SPARC32 def_bool !64BIT select ARCH_HAS_SYNC_DMA_FOR_CPU - select DMA_NONCOHERENT_OPS + select DMA_DIRECT_OPS select GENERIC_ATOMIC64 select CLZ_TAB select HAVE_UID16 diff --git a/arch/sparc/include/asm/cmpxchg_64.h b/arch/sparc/include/asm/cmpxchg_64.h index f71ef3729888..316faa0130ba 100644 --- a/arch/sparc/include/asm/cmpxchg_64.h +++ b/arch/sparc/include/asm/cmpxchg_64.h @@ -52,7 +52,12 @@ static inline unsigned long xchg64(__volatile__ unsigned long *m, unsigned long return val; } -#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) +#define xchg(ptr,x) \ +({ __typeof__(*(ptr)) __ret; \ + __ret = (__typeof__(*(ptr))) \ + __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))); \ + __ret; \ +}) void __xchg_called_with_bad_pointer(void); diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h index 4eb51d2dae98..30b1763580b1 100644 --- a/arch/sparc/include/asm/compat.h +++ b/arch/sparc/include/asm/compat.h @@ -6,38 +6,23 @@ */ #include <linux/types.h> +#include <asm-generic/compat.h> + #define COMPAT_USER_HZ 100 #define COMPAT_UTS_MACHINE "sparc\0\0" -typedef u32 compat_size_t; -typedef s32 compat_ssize_t; -typedef s32 compat_clock_t; -typedef s32 compat_pid_t; typedef u16 __compat_uid_t; typedef u16 __compat_gid_t; typedef u32 __compat_uid32_t; typedef u32 __compat_gid32_t; typedef u16 compat_mode_t; -typedef u32 compat_ino_t; typedef u16 compat_dev_t; -typedef s32 compat_off_t; -typedef s64 compat_loff_t; typedef s16 compat_nlink_t; typedef u16 compat_ipc_pid_t; -typedef s32 compat_daddr_t; typedef u32 compat_caddr_t; typedef __kernel_fsid_t compat_fsid_t; -typedef s32 compat_key_t; -typedef s32 compat_timer_t; - -typedef s32 compat_int_t; -typedef s32 compat_long_t; typedef s64 compat_s64; -typedef u32 compat_uint_t; -typedef u32 compat_ulong_t; typedef u64 compat_u64; -typedef u32 compat_uptr_t; - struct compat_stat { compat_dev_t st_dev; compat_ino_t st_ino; @@ -47,11 +32,11 @@ struct compat_stat { __compat_gid_t st_gid; compat_dev_t st_rdev; compat_off_t st_size; - compat_time_t st_atime; + old_time32_t st_atime; compat_ulong_t st_atime_nsec; - compat_time_t st_mtime; + old_time32_t st_mtime; compat_ulong_t st_mtime_nsec; - compat_time_t st_ctime; + old_time32_t st_ctime; compat_ulong_t st_ctime_nsec; compat_off_t st_blksize; compat_off_t st_blocks; diff --git a/arch/sparc/include/asm/cpudata_64.h b/arch/sparc/include/asm/cpudata_64.h index 666d6b5c0440..9c3fc03abe9a 100644 --- a/arch/sparc/include/asm/cpudata_64.h +++ b/arch/sparc/include/asm/cpudata_64.h @@ -28,7 +28,7 @@ typedef struct { unsigned short sock_id; /* physical package */ unsigned short core_id; unsigned short max_cache_id; /* groupings of highest shared cache */ - unsigned short proc_id; /* strand (aka HW thread) id */ + signed short proc_id; /* strand (aka HW thread) id */ } cpuinfo_sparc; DECLARE_PER_CPU(cpuinfo_sparc, __cpu_data); diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h index e17566376934..b0bb2fcaf1c9 100644 --- a/arch/sparc/include/asm/dma-mapping.h +++ b/arch/sparc/include/asm/dma-mapping.h @@ -14,11 +14,11 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) { #ifdef CONFIG_SPARC_LEON if (sparc_cpu_model == sparc_leon) - return &dma_noncoherent_ops; + return &dma_direct_ops; #endif #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI) if (bus == &pci_bus_type) - return &dma_noncoherent_ops; + return &dma_direct_ops; #endif return dma_ops; } diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h index 300557c66698..3963f80d1cb3 100644 --- a/arch/sparc/include/asm/hugetlb.h +++ b/arch/sparc/include/asm/hugetlb.h @@ -3,7 +3,6 @@ #define _ASM_SPARC64_HUGETLB_H #include <asm/page.h> -#include <asm-generic/hugetlb.h> #ifdef CONFIG_HUGETLB_PAGE struct pud_huge_patch_entry { @@ -13,9 +12,11 @@ struct pud_huge_patch_entry { extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end; #endif +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte); +#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); @@ -25,37 +26,13 @@ static inline int is_hugepage_only_range(struct mm_struct *mm, return 0; } -/* - * If the arch doesn't supply something else, assume that hugepage - * size aligned regions are ok without further preparation. - */ -static inline int prepare_hugepage_range(struct file *file, - unsigned long addr, unsigned long len) -{ - struct hstate *h = hstate_file(file); - - if (len & ~huge_page_mask(h)) - return -EINVAL; - if (addr & ~huge_page_mask(h)) - return -EINVAL; - return 0; -} - +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { } -static inline int huge_pte_none(pte_t pte) -{ - return pte_none(pte); -} - -static inline pte_t huge_pte_wrprotect(pte_t pte) -{ - return pte_wrprotect(pte); -} - +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { @@ -63,6 +40,7 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte)); } +#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte, int dirty) @@ -75,17 +53,15 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, return changed; } -static inline pte_t huge_ptep_get(pte_t *ptep) -{ - return *ptep; -} - static inline void arch_clear_hugepage_flags(struct page *page) { } +#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end, unsigned long floor, unsigned long ceiling); +#include <asm-generic/hugetlb.h> + #endif /* _ASM_SPARC64_HUGETLB_H */ diff --git a/arch/sparc/include/asm/parport.h b/arch/sparc/include/asm/parport.h index 05df5f043053..3c5a1c620f0f 100644 --- a/arch/sparc/include/asm/parport.h +++ b/arch/sparc/include/asm/parport.h @@ -21,6 +21,7 @@ */ #define HAS_DMA +#ifdef CONFIG_PARPORT_PC_FIFO static DEFINE_SPINLOCK(dma_spin_lock); #define claim_dma_lock() \ @@ -31,6 +32,7 @@ static DEFINE_SPINLOCK(dma_spin_lock); #define release_dma_lock(__flags) \ spin_unlock_irqrestore(&dma_spin_lock, __flags); +#endif static struct sparc_ebus_info { struct ebus_dma_info info; diff --git a/arch/sparc/include/asm/processor_32.h b/arch/sparc/include/asm/processor_32.h index 192493c257fa..3c4bc2189092 100644 --- a/arch/sparc/include/asm/processor_32.h +++ b/arch/sparc/include/asm/processor_32.h @@ -7,12 +7,6 @@ #ifndef __ASM_SPARC_PROCESSOR_H #define __ASM_SPARC_PROCESSOR_H -/* - * Sparc32 implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ void *pc; __asm__("sethi %%hi(1f), %0; or %0, %%lo(1f), %0;\n1:" : "=r" (pc)); pc; }) - #include <asm/psr.h> #include <asm/ptrace.h> #include <asm/head.h> diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h index aac23d4a4ddd..5cf145f18f36 100644 --- a/arch/sparc/include/asm/processor_64.h +++ b/arch/sparc/include/asm/processor_64.h @@ -8,12 +8,6 @@ #ifndef __ASM_SPARC64_PROCESSOR_H #define __ASM_SPARC64_PROCESSOR_H -/* - * Sparc64 implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ void *pc; __asm__("rd %%pc, %0" : "=r" (pc)); pc; }) - #include <asm/asi.h> #include <asm/pstate.h> #include <asm/ptrace.h> diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h index d955c8df62d6..1902db27ff4b 100644 --- a/arch/sparc/include/asm/prom.h +++ b/arch/sparc/include/asm/prom.h @@ -24,9 +24,6 @@ #include <linux/atomic.h> #include <linux/irqdomain.h> -#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 2 -#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 - #define of_compat_cmp(s1, s2, l) strncmp((s1), (s2), (l)) #define of_prop_cmp(s1, s2) strcasecmp((s1), (s2)) #define of_node_cmp(s1, s2) strcmp((s1), (s2)) diff --git a/arch/sparc/include/asm/switch_to_64.h b/arch/sparc/include/asm/switch_to_64.h index 4ff29b1406a9..b1d4e2e3210f 100644 --- a/arch/sparc/include/asm/switch_to_64.h +++ b/arch/sparc/include/asm/switch_to_64.h @@ -67,6 +67,7 @@ do { save_and_clear_fpu(); \ } while(0) void synchronize_user_stack(void); -void fault_in_user_windows(void); +struct pt_regs; +void fault_in_user_windows(struct pt_regs *); #endif /* __SPARC64_SWITCH_TO_64_H */ diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h index 7fb676360928..20255471e653 100644 --- a/arch/sparc/include/asm/thread_info_64.h +++ b/arch/sparc/include/asm/thread_info_64.h @@ -121,8 +121,12 @@ struct thread_info { } /* how to get the thread information struct from C */ +#ifndef BUILD_VDSO register struct thread_info *current_thread_info_reg asm("g6"); #define current_thread_info() (current_thread_info_reg) +#else +extern struct thread_info *current_thread_info(void); +#endif /* thread information allocation */ #if PAGE_SHIFT == 13 diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h index b2a6a955113e..00f87dbd0b17 100644 --- a/arch/sparc/include/asm/unistd.h +++ b/arch/sparc/include/asm/unistd.h @@ -21,6 +21,7 @@ #else #define __NR_time 231 /* Linux sparc32 */ #endif +#define __ARCH_WANT_NEW_STAT #define __ARCH_WANT_OLD_READDIR #define __ARCH_WANT_STAT64 #define __ARCH_WANT_SYS_ALARM @@ -33,7 +34,6 @@ #define __ARCH_WANT_SYS_SOCKETCALL #define __ARCH_WANT_SYS_FADVISE64 #define __ARCH_WANT_SYS_GETPGRP -#define __ARCH_WANT_SYS_LLSEEK #define __ARCH_WANT_SYS_NICE #define __ARCH_WANT_SYS_OLDUMOUNT #define __ARCH_WANT_SYS_SIGPENDING @@ -42,6 +42,7 @@ #define __ARCH_WANT_SYS_IPC #else #define __ARCH_WANT_COMPAT_SYS_TIME +#define __ARCH_WANT_SYS_UTIME32 #define __ARCH_WANT_COMPAT_SYS_SENDFILE #endif diff --git a/arch/sparc/include/asm/vdso.h b/arch/sparc/include/asm/vdso.h index 93b628731a5e..59e79d35cd73 100644 --- a/arch/sparc/include/asm/vdso.h +++ b/arch/sparc/include/asm/vdso.h @@ -8,10 +8,8 @@ struct vdso_image { void *data; unsigned long size; /* Always a multiple of PAGE_SIZE */ + long sym_vvar_start; /* Negative offset to the vvar area */ - long sym_vread_tick; /* Start of vread_tick section */ - long sym_vread_tick_patch_start; /* Start of tick read */ - long sym_vread_tick_patch_end; /* End of tick read */ }; #ifdef CONFIG_SPARC64 diff --git a/arch/sparc/include/uapi/asm/ioctls.h b/arch/sparc/include/uapi/asm/ioctls.h index 2df52711e170..7fd2f5873c9e 100644 --- a/arch/sparc/include/uapi/asm/ioctls.h +++ b/arch/sparc/include/uapi/asm/ioctls.h @@ -27,6 +27,8 @@ #define TIOCGEXCL _IOR('T', 0x40, int) /* Get exclusive mode state */ #define TIOCGRS485 _IOR('T', 0x41, struct serial_rs485) #define TIOCSRS485 _IOWR('T', 0x42, struct serial_rs485) +#define TIOCGISO7816 _IOR('T', 0x43, struct serial_iso7816) +#define TIOCSISO7816 _IOWR('T', 0x44, struct serial_iso7816) /* 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/siginfo.h b/arch/sparc/include/uapi/asm/siginfo.h index e7049550ac82..68bdde4c2a2e 100644 --- a/arch/sparc/include/uapi/asm/siginfo.h +++ b/arch/sparc/include/uapi/asm/siginfo.h @@ -4,7 +4,6 @@ #if defined(__sparc__) && defined(__arch64__) -#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int)) #define __ARCH_SI_BAND_T int #endif /* defined(__sparc__) && defined(__arch64__) */ @@ -17,10 +16,4 @@ #define SI_NOINFO 32767 /* no information in siginfo_t */ -/* - * SIGEMT si_codes - */ -#define EMT_TAGOVF 1 /* tag overflow */ -#define NSIGEMT 1 - #endif /* _UAPI__SPARC_SIGINFO_H */ diff --git a/arch/sparc/include/uapi/asm/unistd.h b/arch/sparc/include/uapi/asm/unistd.h index 09acf0ddec10..45b4bf1875e6 100644 --- a/arch/sparc/include/uapi/asm/unistd.h +++ b/arch/sparc/include/uapi/asm/unistd.h @@ -427,8 +427,9 @@ #define __NR_preadv2 358 #define __NR_pwritev2 359 #define __NR_statx 360 +#define __NR_io_pgetevents 361 -#define NR_syscalls 361 +#define NR_syscalls 362 /* Bitmask values returned from kern_features system call. */ #define KERN_FEATURE_MIXED_MODE_STACK 0x00000001 diff --git a/arch/sparc/kernel/kgdb_32.c b/arch/sparc/kernel/kgdb_32.c index 5868fc333ea8..639c8e54530a 100644 --- a/arch/sparc/kernel/kgdb_32.c +++ b/arch/sparc/kernel/kgdb_32.c @@ -122,7 +122,7 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, linux_regs->pc = addr; linux_regs->npc = addr + 4; } - /* fallthru */ + /* fall through */ case 'D': case 'k': diff --git a/arch/sparc/kernel/kgdb_64.c b/arch/sparc/kernel/kgdb_64.c index d5f7dc6323d5..a68bbddbdba4 100644 --- a/arch/sparc/kernel/kgdb_64.c +++ b/arch/sparc/kernel/kgdb_64.c @@ -148,7 +148,7 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, linux_regs->tpc = addr; linux_regs->tnpc = addr + 4; } - /* fallthru */ + /* fall through */ case 'D': case 'k': diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c index 39a2503fa3e1..9a26b442f820 100644 --- a/arch/sparc/kernel/mdesc.c +++ b/arch/sparc/kernel/mdesc.c @@ -5,13 +5,12 @@ */ #include <linux/kernel.h> #include <linux/types.h> -#include <linux/memblock.h> #include <linux/log2.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/mm.h> #include <linux/miscdevice.h> -#include <linux/bootmem.h> +#include <linux/memblock.h> #include <linux/export.h> #include <linux/refcount.h> @@ -170,7 +169,7 @@ static struct mdesc_handle * __init mdesc_memblock_alloc(unsigned int mdesc_size mdesc_size); alloc_size = PAGE_ALIGN(handle_size); - paddr = memblock_alloc(alloc_size, PAGE_SIZE); + paddr = memblock_phys_alloc(alloc_size, PAGE_SIZE); hp = NULL; if (paddr) { @@ -190,7 +189,7 @@ static void __init mdesc_memblock_free(struct mdesc_handle *hp) alloc_size = PAGE_ALIGN(hp->handle_size); start = __pa(hp); - free_bootmem_late(start, alloc_size); + memblock_free_late(start, alloc_size); } static struct mdesc_mem_ops memblock_mdesc_ops = { diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c index d3149baaa33c..47c871394ccb 100644 --- a/arch/sparc/kernel/perf_event.c +++ b/arch/sparc/kernel/perf_event.c @@ -24,6 +24,7 @@ #include <asm/cpudata.h> #include <linux/uaccess.h> #include <linux/atomic.h> +#include <linux/sched/clock.h> #include <asm/nmi.h> #include <asm/pcr.h> #include <asm/cacheflush.h> @@ -927,6 +928,8 @@ static void read_in_all_counters(struct cpu_hw_events *cpuc) sparc_perf_event_update(cp, &cp->hw, cpuc->current_idx[i]); cpuc->current_idx[i] = PIC_NO_INDEX; + if (cp->hw.state & PERF_HES_STOPPED) + cp->hw.state |= PERF_HES_ARCH; } } } @@ -959,10 +962,12 @@ static void calculate_single_pcr(struct cpu_hw_events *cpuc) enc = perf_event_get_enc(cpuc->events[i]); cpuc->pcr[0] &= ~mask_for_index(idx); - if (hwc->state & PERF_HES_STOPPED) + if (hwc->state & PERF_HES_ARCH) { cpuc->pcr[0] |= nop_for_index(idx); - else + } else { cpuc->pcr[0] |= event_encoding(enc, idx); + hwc->state = 0; + } } out: cpuc->pcr[0] |= cpuc->event[0]->hw.config_base; @@ -988,6 +993,9 @@ static void calculate_multiple_pcrs(struct cpu_hw_events *cpuc) cpuc->current_idx[i] = idx; + if (cp->hw.state & PERF_HES_ARCH) + continue; + sparc_pmu_start(cp, PERF_EF_RELOAD); } out: @@ -1079,6 +1087,8 @@ static void sparc_pmu_start(struct perf_event *event, int flags) event->hw.state = 0; sparc_pmu_enable_event(cpuc, &event->hw, idx); + + perf_event_update_userpage(event); } static void sparc_pmu_stop(struct perf_event *event, int flags) @@ -1371,9 +1381,9 @@ static int sparc_pmu_add(struct perf_event *event, int ef_flags) cpuc->events[n0] = event->hw.event_base; cpuc->current_idx[n0] = PIC_NO_INDEX; - event->hw.state = PERF_HES_UPTODATE; + event->hw.state = PERF_HES_UPTODATE | PERF_HES_STOPPED; if (!(ef_flags & PERF_EF_START)) - event->hw.state |= PERF_HES_STOPPED; + event->hw.state |= PERF_HES_ARCH; /* * If group events scheduling transaction was started, @@ -1603,6 +1613,8 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self, struct perf_sample_data data; struct cpu_hw_events *cpuc; struct pt_regs *regs; + u64 finish_clock; + u64 start_clock; int i; if (!atomic_read(&active_events)) @@ -1616,6 +1628,8 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self, return NOTIFY_DONE; } + start_clock = sched_clock(); + regs = args->regs; cpuc = this_cpu_ptr(&cpu_hw_events); @@ -1654,6 +1668,10 @@ static int __kprobes perf_event_nmi_handler(struct notifier_block *self, sparc_pmu_stop(event, 0); } + finish_clock = sched_clock(); + + perf_sample_event_took(finish_clock - start_clock); + return NOTIFY_STOP; } @@ -1831,16 +1849,12 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs { u64 saved_fault_address = current_thread_info()->fault_address; u8 saved_fault_code = get_thread_fault_code(); - mm_segment_t old_fs; perf_callchain_store(entry, regs->tpc); if (!current->mm) return; - old_fs = get_fs(); - set_fs(USER_DS); - flushw_user(); pagefault_disable(); @@ -1852,7 +1866,6 @@ perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs pagefault_enable(); - set_fs(old_fs); set_thread_fault_code(saved_fault_code); current_thread_info()->fault_address = saved_fault_address; } diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index 6c086086ca8f..59eaf6227af1 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -36,6 +36,7 @@ #include <linux/sysrq.h> #include <linux/nmi.h> #include <linux/context_tracking.h> +#include <linux/signal.h> #include <linux/uaccess.h> #include <asm/page.h> @@ -521,7 +522,12 @@ static void stack_unaligned(unsigned long sp) force_sig_fault(SIGBUS, BUS_ADRALN, (void __user *) sp, 0, current); } -void fault_in_user_windows(void) +static const char uwfault32[] = KERN_INFO \ + "%s[%d]: bad register window fault: SP %08lx (orig_sp %08lx) TPC %08lx O7 %08lx\n"; +static const char uwfault64[] = KERN_INFO \ + "%s[%d]: bad register window fault: SP %016lx (orig_sp %016lx) TPC %08lx O7 %016lx\n"; + +void fault_in_user_windows(struct pt_regs *regs) { struct thread_info *t = current_thread_info(); unsigned long window; @@ -534,9 +540,9 @@ void fault_in_user_windows(void) do { struct reg_window *rwin = &t->reg_window[window]; int winsize = sizeof(struct reg_window); - unsigned long sp; + unsigned long sp, orig_sp; - sp = t->rwbuf_stkptrs[window]; + orig_sp = sp = t->rwbuf_stkptrs[window]; if (test_thread_64bit_stack(sp)) sp += STACK_BIAS; @@ -547,8 +553,16 @@ void fault_in_user_windows(void) stack_unaligned(sp); if (unlikely(copy_to_user((char __user *)sp, - rwin, winsize))) + rwin, winsize))) { + if (show_unhandled_signals) + printk_ratelimited(is_compat_task() ? + uwfault32 : uwfault64, + current->comm, current->pid, + sp, orig_sp, + regs->tpc, + regs->u_regs[UREG_I7]); goto barf; + } } while (window--); } set_thread_wsaved(0); @@ -556,8 +570,7 @@ void fault_in_user_windows(void) barf: set_thread_wsaved(window + 1); - user_exit(); - do_exit(SIGILL); + force_sig(SIGSEGV, current); } asmlinkage long sparc_do_fork(unsigned long clone_flags, diff --git a/arch/sparc/kernel/prom_32.c b/arch/sparc/kernel/prom_32.c index b51cbb9e87dc..d41e2a749c5d 100644 --- a/arch/sparc/kernel/prom_32.c +++ b/arch/sparc/kernel/prom_32.c @@ -19,7 +19,7 @@ #include <linux/types.h> #include <linux/string.h> #include <linux/mm.h> -#include <linux/bootmem.h> +#include <linux/memblock.h> #include <asm/prom.h> #include <asm/oplib.h> @@ -32,7 +32,7 @@ void * __init prom_early_alloc(unsigned long size) { void *ret; - ret = __alloc_bootmem(size, SMP_CACHE_BYTES, 0UL); + ret = memblock_alloc_from(size, SMP_CACHE_BYTES, 0UL); if (ret != NULL) memset(ret, 0, size); diff --git a/arch/sparc/kernel/prom_64.c b/arch/sparc/kernel/prom_64.c index baeaeed64993..c37955d127fe 100644 --- a/arch/sparc/kernel/prom_64.c +++ b/arch/sparc/kernel/prom_64.c @@ -34,7 +34,7 @@ void * __init prom_early_alloc(unsigned long size) { - unsigned long paddr = memblock_alloc(size, SMP_CACHE_BYTES); + unsigned long paddr = memblock_phys_alloc(size, SMP_CACHE_BYTES); void *ret; if (!paddr) { diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S index f6528884a2c8..29aa34f11720 100644 --- a/arch/sparc/kernel/rtrap_64.S +++ b/arch/sparc/kernel/rtrap_64.S @@ -39,6 +39,7 @@ __handle_preemption: wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate __handle_user_windows: + add %sp, PTREGS_OFF, %o0 call fault_in_user_windows 661: wrpr %g0, RTRAP_PSTATE, %pstate /* If userspace is using ADI, it could potentially pass @@ -84,8 +85,9 @@ __handle_signal: ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1 sethi %hi(0xf << 20), %l4 and %l1, %l4, %l4 + andn %l1, %l4, %l1 ba,pt %xcc, __handle_preemption_continue - andn %l1, %l4, %l1 + srl %l4, 20, %l4 /* When returning from a NMI (%pil==15) interrupt we want to * avoid running softirqs, doing IRQ tracing, preempting, etc. diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index 7944b3ca216a..cd2825cb8420 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -32,7 +32,7 @@ #include <linux/initrd.h> #include <linux/module.h> #include <linux/start_kernel.h> -#include <linux/bootmem.h> +#include <linux/memblock.h> #include <asm/io.h> #include <asm/processor.h> @@ -621,12 +621,10 @@ void __init alloc_irqstack_bootmem(void) for_each_possible_cpu(i) { node = cpu_to_node(i); - softirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node), - THREAD_SIZE, - THREAD_SIZE, 0); - hardirq_stack[i] = __alloc_bootmem_node(NODE_DATA(node), - THREAD_SIZE, - THREAD_SIZE, 0); + softirq_stack[i] = memblock_alloc_node(THREAD_SIZE, + THREAD_SIZE, node); + hardirq_stack[i] = memblock_alloc_node(THREAD_SIZE, + THREAD_SIZE, node); } } diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c index 44d379db3f64..4c5b3fcbed94 100644 --- a/arch/sparc/kernel/signal32.c +++ b/arch/sparc/kernel/signal32.c @@ -371,7 +371,11 @@ static int setup_frame32(struct ksignal *ksig, struct pt_regs *regs, get_sigframe(ksig, regs, sigframe_size); if (invalid_frame_pointer(sf, sigframe_size)) { - do_exit(SIGILL); + if (show_unhandled_signals) + pr_info("%s[%d] bad frame in setup_frame32: %08lx TPC %08lx O7 %08lx\n", + current->comm, current->pid, (unsigned long)sf, + regs->tpc, regs->u_regs[UREG_I7]); + force_sigsegv(ksig->sig, current); return -EINVAL; } @@ -501,7 +505,11 @@ static int setup_rt_frame32(struct ksignal *ksig, struct pt_regs *regs, get_sigframe(ksig, regs, sigframe_size); if (invalid_frame_pointer(sf, sigframe_size)) { - do_exit(SIGILL); + if (show_unhandled_signals) + pr_info("%s[%d] bad frame in setup_rt_frame32: %08lx TPC %08lx O7 %08lx\n", + current->comm, current->pid, (unsigned long)sf, + regs->tpc, regs->u_regs[UREG_I7]); + force_sigsegv(ksig->sig, current); return -EINVAL; } diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c index 48366e5eb5b2..e9de1803a22e 100644 --- a/arch/sparc/kernel/signal_64.c +++ b/arch/sparc/kernel/signal_64.c @@ -370,7 +370,11 @@ setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs) get_sigframe(ksig, regs, sf_size); if (invalid_frame_pointer (sf)) { - do_exit(SIGILL); /* won't return, actually */ + if (show_unhandled_signals) + pr_info("%s[%d] bad frame in setup_rt_frame: %016lx TPC %016lx O7 %016lx\n", + current->comm, current->pid, (unsigned long)sf, + regs->tpc, regs->u_regs[UREG_I7]); + force_sigsegv(ksig->sig, current); return -EINVAL; } diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index d3ea1f3c06a0..4792e08ad36b 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -22,7 +22,7 @@ #include <linux/cache.h> #include <linux/jiffies.h> #include <linux/profile.h> -#include <linux/bootmem.h> +#include <linux/memblock.h> #include <linux/vmalloc.h> #include <linux/ftrace.h> #include <linux/cpu.h> @@ -1588,26 +1588,26 @@ static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size, void *ptr; if (!node_online(node) || !NODE_DATA(node)) { - ptr = __alloc_bootmem(size, align, goal); + ptr = memblock_alloc_from(size, align, goal); pr_info("cpu %d has no node %d or node-local memory\n", cpu, node); pr_debug("per cpu data for cpu%d %lu bytes at %016lx\n", cpu, size, __pa(ptr)); } else { - ptr = __alloc_bootmem_node(NODE_DATA(node), - size, align, goal); + ptr = memblock_alloc_try_nid(size, align, goal, + MEMBLOCK_ALLOC_ACCESSIBLE, node); pr_debug("per cpu data for cpu%d %lu bytes on node%d at " "%016lx\n", cpu, size, node, __pa(ptr)); } return ptr; #else - return __alloc_bootmem(size, align, goal); + return memblock_alloc_from(size, align, goal); #endif } static void __init pcpu_free_bootmem(void *ptr, size_t size) { - free_bootmem(__pa(ptr), size); + memblock_free(__pa(ptr), size); } static int __init pcpu_cpu_distance(unsigned int from, unsigned int to) @@ -1627,7 +1627,7 @@ static void __init pcpu_populate_pte(unsigned long addr) if (pgd_none(*pgd)) { pud_t *new; - new = __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); + new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); pgd_populate(&init_mm, pgd, new); } @@ -1635,7 +1635,7 @@ static void __init pcpu_populate_pte(unsigned long addr) if (pud_none(*pud)) { pmd_t *new; - new = __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); + new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); pud_populate(&init_mm, pud, new); } @@ -1643,7 +1643,7 @@ static void __init pcpu_populate_pte(unsigned long addr) if (!pmd_present(*pmd)) { pte_t *new; - new = __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); + new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); pmd_populate_kernel(&init_mm, pmd, new); } } diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S index 12bee14b552c..621a363098ec 100644 --- a/arch/sparc/kernel/systbls_32.S +++ b/arch/sparc/kernel/systbls_32.S @@ -90,4 +90,4 @@ sys_call_table: /*345*/ .long sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf /*350*/ .long sys_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen /*355*/ .long sys_setsockopt, sys_mlock2, sys_copy_file_range, sys_preadv2, sys_pwritev2 -/*360*/ .long sys_statx +/*360*/ .long sys_statx, sys_io_pgetevents diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index 387ef993880a..ff9389a1c9f3 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -47,9 +47,9 @@ sys_call_table32: .word sys_recvfrom, sys_setreuid16, sys_setregid16, sys_rename, compat_sys_truncate /*130*/ .word compat_sys_ftruncate, sys_flock, compat_sys_lstat64, sys_sendto, sys_shutdown .word sys_socketpair, sys_mkdir, sys_rmdir, compat_sys_utimes, compat_sys_stat64 -/*140*/ .word sys_sendfile64, sys_nis_syscall, compat_sys_futex, sys_gettid, compat_sys_getrlimit +/*140*/ .word sys_sendfile64, sys_getpeername, compat_sys_futex, sys_gettid, compat_sys_getrlimit .word compat_sys_setrlimit, sys_pivot_root, sys_prctl, sys_pciconfig_read, sys_pciconfig_write -/*150*/ .word sys_nis_syscall, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64 +/*150*/ .word sys_getsockname, sys_inotify_init, sys_inotify_add_watch, sys_poll, sys_getdents64 .word compat_sys_fcntl64, sys_inotify_rm_watch, compat_sys_statfs, compat_sys_fstatfs, sys_oldumount /*160*/ .word compat_sys_sched_setaffinity, compat_sys_sched_getaffinity, sys_getdomainname, sys_setdomainname, sys_nis_syscall .word sys_quotactl, sys_set_tid_address, compat_sys_mount, compat_sys_ustat, sys_setxattr @@ -91,7 +91,7 @@ sys_call_table32: .word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf /*350*/ .word sys32_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen .word compat_sys_setsockopt, sys_mlock2, sys_copy_file_range, compat_sys_preadv2, compat_sys_pwritev2 -/*360*/ .word sys_statx +/*360*/ .word sys_statx, compat_sys_io_pgetevents #endif /* CONFIG_COMPAT */ @@ -173,4 +173,4 @@ sys_call_table: .word sys_renameat2, sys_seccomp, sys_getrandom, sys_memfd_create, sys_bpf /*350*/ .word sys64_execveat, sys_membarrier, sys_userfaultfd, sys_bind, sys_listen .word sys_setsockopt, sys_mlock2, sys_copy_file_range, sys_preadv2, sys_pwritev2 -/*360*/ .word sys_statx +/*360*/ .word sys_statx, sys_io_pgetevents diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c index f0eba72aa1ad..5f356dc8e178 100644 --- a/arch/sparc/kernel/time_64.c +++ b/arch/sparc/kernel/time_64.c @@ -53,8 +53,6 @@ DEFINE_SPINLOCK(rtc_lock); -unsigned int __read_mostly vdso_fix_stick; - #ifdef CONFIG_SMP unsigned long profile_pc(struct pt_regs *regs) { @@ -838,7 +836,6 @@ void __init time_init_early(void) } else { init_tick_ops(&tick_operations); clocksource_tick.archdata.vclock_mode = VCLOCK_TICK; - vdso_fix_stick = 1; } } else { init_tick_ops(&stick_operations); diff --git a/arch/sparc/kernel/viohs.c b/arch/sparc/kernel/viohs.c index 635d67ffc9a3..7db5aabe9708 100644 --- a/arch/sparc/kernel/viohs.c +++ b/arch/sparc/kernel/viohs.c @@ -180,11 +180,17 @@ static int send_dreg(struct vio_driver_state *vio) struct vio_dring_register pkt; char all[sizeof(struct vio_dring_register) + (sizeof(struct ldc_trans_cookie) * - dr->ncookies)]; + VIO_MAX_RING_COOKIES)]; } u; + size_t bytes = sizeof(struct vio_dring_register) + + (sizeof(struct ldc_trans_cookie) * + dr->ncookies); int i; - memset(&u, 0, sizeof(u)); + if (WARN_ON(bytes > sizeof(u))) + return -EINVAL; + + memset(&u, 0, bytes); init_tag(&u.pkt.tag, VIO_TYPE_CTRL, VIO_SUBTYPE_INFO, VIO_DRING_REG); u.pkt.dring_ident = 0; u.pkt.num_descr = dr->num_entries; @@ -206,7 +212,7 @@ static int send_dreg(struct vio_driver_state *vio) (unsigned long long) u.pkt.cookies[i].cookie_size); } - return send_ctrl(vio, &u.pkt.tag, sizeof(u)); + return send_ctrl(vio, &u.pkt.tag, bytes); } static int send_rdx(struct vio_driver_state *vio) diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c index 92634d4e440c..d900952bfc5f 100644 --- a/arch/sparc/mm/init_32.c +++ b/arch/sparc/mm/init_32.c @@ -22,7 +22,6 @@ #include <linux/initrd.h> #include <linux/init.h> #include <linux/highmem.h> -#include <linux/bootmem.h> #include <linux/memblock.h> #include <linux/pagemap.h> #include <linux/poison.h> @@ -265,7 +264,7 @@ void __init mem_init(void) i = last_valid_pfn >> ((20 - PAGE_SHIFT) + 5); i += 1; sparc_valid_addr_bitmap = (unsigned long *) - __alloc_bootmem(i << 2, SMP_CACHE_BYTES, 0UL); + memblock_alloc_from(i << 2, SMP_CACHE_BYTES, 0UL); if (sparc_valid_addr_bitmap == NULL) { prom_printf("mem_init: Cannot alloc valid_addr_bitmap.\n"); @@ -277,7 +276,7 @@ void __init mem_init(void) max_mapnr = last_valid_pfn - pfn_base; high_memory = __va(max_low_pfn << PAGE_SHIFT); - free_all_bootmem(); + memblock_free_all(); for (i = 0; sp_banks[i].num_bytes != 0; i++) { unsigned long start_pfn = sp_banks[i].base_addr >> PAGE_SHIFT; diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index f396048a0d68..3c8aac21f426 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -11,7 +11,7 @@ #include <linux/sched.h> #include <linux/string.h> #include <linux/init.h> -#include <linux/bootmem.h> +#include <linux/memblock.h> #include <linux/mm.h> #include <linux/hugetlb.h> #include <linux/initrd.h> @@ -25,7 +25,6 @@ #include <linux/sort.h> #include <linux/ioport.h> #include <linux/percpu.h> -#include <linux/memblock.h> #include <linux/mmzone.h> #include <linux/gfp.h> @@ -1092,7 +1091,8 @@ static void __init allocate_node_data(int nid) #ifdef CONFIG_NEED_MULTIPLE_NODES unsigned long paddr; - paddr = memblock_alloc_try_nid(sizeof(struct pglist_data), SMP_CACHE_BYTES, nid); + paddr = memblock_phys_alloc_try_nid(sizeof(struct pglist_data), + SMP_CACHE_BYTES, nid); if (!paddr) { prom_printf("Cannot allocate pglist_data for nid[%d]\n", nid); prom_halt(); @@ -1266,8 +1266,8 @@ static int __init grab_mlgroups(struct mdesc_handle *md) if (!count) return -ENOENT; - paddr = memblock_alloc(count * sizeof(struct mdesc_mlgroup), - SMP_CACHE_BYTES); + paddr = memblock_phys_alloc(count * sizeof(struct mdesc_mlgroup), + SMP_CACHE_BYTES); if (!paddr) return -ENOMEM; @@ -1307,8 +1307,8 @@ static int __init grab_mblocks(struct mdesc_handle *md) if (!count) return -ENOENT; - paddr = memblock_alloc(count * sizeof(struct mdesc_mblock), - SMP_CACHE_BYTES); + paddr = memblock_phys_alloc(count * sizeof(struct mdesc_mblock), + SMP_CACHE_BYTES); if (!paddr) return -ENOMEM; @@ -1383,6 +1383,7 @@ int __node_distance(int from, int to) } return numa_latency[from][to]; } +EXPORT_SYMBOL(__node_distance); static int __init find_best_numa_node_for_mlgroup(struct mdesc_mlgroup *grp) { @@ -1809,7 +1810,8 @@ static unsigned long __ref kernel_map_range(unsigned long pstart, if (pgd_none(*pgd)) { pud_t *new; - new = __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); + new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE, + PAGE_SIZE); alloc_bytes += PAGE_SIZE; pgd_populate(&init_mm, pgd, new); } @@ -1821,7 +1823,8 @@ static unsigned long __ref kernel_map_range(unsigned long pstart, vstart = kernel_map_hugepud(vstart, vend, pud); continue; } - new = __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); + new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE, + PAGE_SIZE); alloc_bytes += PAGE_SIZE; pud_populate(&init_mm, pud, new); } @@ -1834,7 +1837,8 @@ static unsigned long __ref kernel_map_range(unsigned long pstart, vstart = kernel_map_hugepmd(vstart, vend, pmd); continue; } - new = __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, PAGE_SIZE); + new = memblock_alloc_from(PAGE_SIZE, PAGE_SIZE, + PAGE_SIZE); alloc_bytes += PAGE_SIZE; pmd_populate_kernel(&init_mm, pmd, new); } @@ -2540,12 +2544,12 @@ void __init mem_init(void) { high_memory = __va(last_valid_pfn << PAGE_SHIFT); - free_all_bootmem(); + memblock_free_all(); /* * Must be done after boot memory is put on freelist, because here we * might set fields in deferred struct pages that have not yet been - * initialized, and free_all_bootmem() initializes all the reserved + * initialized, and memblock_free_all() initializes all the reserved * deferred pages for us. */ register_page_bootmem_info(); diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c index be9cb0065179..a6142c5abf61 100644 --- a/arch/sparc/mm/srmmu.c +++ b/arch/sparc/mm/srmmu.c @@ -11,7 +11,7 @@ #include <linux/seq_file.h> #include <linux/spinlock.h> -#include <linux/bootmem.h> +#include <linux/memblock.h> #include <linux/pagemap.h> #include <linux/vmalloc.h> #include <linux/kdebug.h> @@ -303,13 +303,13 @@ static void __init srmmu_nocache_init(void) bitmap_bits = srmmu_nocache_size >> SRMMU_NOCACHE_BITMAP_SHIFT; - srmmu_nocache_pool = __alloc_bootmem(srmmu_nocache_size, - SRMMU_NOCACHE_ALIGN_MAX, 0UL); + srmmu_nocache_pool = memblock_alloc_from(srmmu_nocache_size, + SRMMU_NOCACHE_ALIGN_MAX, 0UL); memset(srmmu_nocache_pool, 0, srmmu_nocache_size); srmmu_nocache_bitmap = - __alloc_bootmem(BITS_TO_LONGS(bitmap_bits) * sizeof(long), - SMP_CACHE_BYTES, 0UL); + memblock_alloc_from(BITS_TO_LONGS(bitmap_bits) * sizeof(long), + SMP_CACHE_BYTES, 0UL); bit_map_init(&srmmu_nocache_map, srmmu_nocache_bitmap, bitmap_bits); srmmu_swapper_pg_dir = __srmmu_get_nocache(SRMMU_PGD_TABLE_SIZE, SRMMU_PGD_TABLE_SIZE); @@ -467,7 +467,7 @@ static void __init sparc_context_init(int numctx) unsigned long size; size = numctx * sizeof(struct ctx_list); - ctx_list_pool = __alloc_bootmem(size, SMP_CACHE_BYTES, 0UL); + ctx_list_pool = memblock_alloc_from(size, SMP_CACHE_BYTES, 0UL); for (ctx = 0; ctx < numctx; ctx++) { struct ctx_list *clist; diff --git a/arch/sparc/vdso/Makefile b/arch/sparc/vdso/Makefile index dd0b5a92ffd0..a6e18ca4cc18 100644 --- a/arch/sparc/vdso/Makefile +++ b/arch/sparc/vdso/Makefile @@ -31,23 +31,19 @@ obj-y += $(vdso_img_objs) targets += $(vdso_img_cfiles) targets += $(vdso_img_sodbg) $(vdso_img-y:%=vdso%.so) -export CPPFLAGS_vdso.lds += -P -C +CPPFLAGS_vdso.lds += -P -C -VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \ - -Wl,--no-undefined \ - -Wl,-z,max-page-size=8192 -Wl,-z,common-page-size=8192 \ - $(DISABLE_LTO) +VDSO_LDFLAGS_vdso.lds = -m elf64_sparc -soname linux-vdso.so.1 --no-undefined \ + -z max-page-size=8192 -z common-page-size=8192 -$(obj)/vdso64.so.dbg: $(src)/vdso.lds $(vobjs) FORCE +$(obj)/vdso64.so.dbg: $(obj)/vdso.lds $(vobjs) FORCE $(call if_changed,vdso) HOST_EXTRACFLAGS += -I$(srctree)/tools/include hostprogs-y += vdso2c quiet_cmd_vdso2c = VDSO2C $@ -define cmd_vdso2c - $(obj)/vdso2c $< $(<:%.dbg=%) $@ -endef + cmd_vdso2c = $(obj)/vdso2c $< $(<:%.dbg=%) $@ $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(obj)/vdso%.so $(obj)/vdso2c FORCE $(call if_changed,vdso2c) @@ -56,13 +52,14 @@ $(obj)/vdso-image-%.c: $(obj)/vdso%.so.dbg $(obj)/vdso%.so $(obj)/vdso2c FORCE # Don't omit frame pointers for ease of userspace debugging, but do # optimize sibling calls. # -CFL := $(PROFILING) -mcmodel=medlow -fPIC -O2 -fasynchronous-unwind-tables \ - -m64 -ffixed-g2 -ffixed-g3 -fcall-used-g4 -fcall-used-g5 -ffixed-g6 \ - -ffixed-g7 $(filter -g%,$(KBUILD_CFLAGS)) \ - $(call cc-option, -fno-stack-protector) -fno-omit-frame-pointer \ - -foptimize-sibling-calls -DBUILD_VDSO +CFL := $(PROFILING) -mcmodel=medlow -fPIC -O2 -fasynchronous-unwind-tables -m64 \ + $(filter -g%,$(KBUILD_CFLAGS)) $(call cc-option, -fno-stack-protector) \ + -fno-omit-frame-pointer -foptimize-sibling-calls \ + -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO + +SPARC_REG_CFLAGS = -ffixed-g4 -ffixed-g5 -fcall-used-g5 -fcall-used-g7 -$(vobjs): KBUILD_CFLAGS += $(CFL) +$(vobjs): KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS) $(SPARC_REG_CFLAGS),$(KBUILD_CFLAGS)) $(CFL) # # vDSO code runs in userspace and -pg doesn't help with profiling anyway. @@ -75,7 +72,7 @@ $(obj)/%.so: $(obj)/%.so.dbg $(call if_changed,objcopy) CPPFLAGS_vdso32.lds = $(CPPFLAGS_vdso.lds) -VDSO_LDFLAGS_vdso32.lds = -m32 -Wl,-m,elf32_sparc,-soname=linux-gate.so.1 +VDSO_LDFLAGS_vdso32.lds = -m elf32_sparc -soname linux-gate.so.1 #This makes sure the $(obj) subdirectory exists even though vdso32/ #is not a kbuild sub-make subdirectory @@ -93,7 +90,8 @@ KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS)) KBUILD_CFLAGS_32 := $(filter-out -mcmodel=medlow,$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS_32)) -KBUILD_CFLAGS_32 += -m32 -msoft-float -fpic -mno-app-regs -ffixed-g7 +KBUILD_CFLAGS_32 := $(filter-out $(SPARC_REG_CFLAGS),$(KBUILD_CFLAGS_32)) +KBUILD_CFLAGS_32 += -m32 -msoft-float -fpic KBUILD_CFLAGS_32 += $(call cc-option, -fno-stack-protector) KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls) KBUILD_CFLAGS_32 += -fno-omit-frame-pointer @@ -111,12 +109,13 @@ $(obj)/vdso32.so.dbg: FORCE \ # The DSO images are built using a special linker script. # quiet_cmd_vdso = VDSO $@ - cmd_vdso = $(CC) -nostdlib -o $@ \ + cmd_vdso = $(LD) -nostdlib -o $@ \ $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \ - -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) + -T $(filter %.lds,$^) $(filter %.o,$^) && \ + sh $(srctree)/$(src)/checkundef.sh '$(OBJDUMP)' '$@' -VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) \ - $(call cc-ldoption, -Wl$(comma)--build-id) -Wl,-Bsymbolic +VDSO_LDFLAGS = -shared $(call ld-option, --hash-style=both) \ + $(call ld-option, --build-id) -Bsymbolic GCOV_PROFILE := n # diff --git a/arch/sparc/vdso/checkundef.sh b/arch/sparc/vdso/checkundef.sh new file mode 100644 index 000000000000..2d85876ffc32 --- /dev/null +++ b/arch/sparc/vdso/checkundef.sh @@ -0,0 +1,10 @@ +#!/bin/sh +objdump="$1" +file="$2" +$objdump -t "$file" | grep '*UUND*' | grep -v '#scratch' > /dev/null 2>&1 +if [ $? -eq 1 ]; then + exit 0 +else + echo "$file: undefined symbols found" >&2 + exit 1 +fi diff --git a/arch/sparc/vdso/vclock_gettime.c b/arch/sparc/vdso/vclock_gettime.c index 3feb3d960ca5..55662c3b4513 100644 --- a/arch/sparc/vdso/vclock_gettime.c +++ b/arch/sparc/vdso/vclock_gettime.c @@ -12,11 +12,6 @@ * Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved. */ -/* Disable profiling for userspace code: */ -#ifndef DISABLE_BRANCH_PROFILING -#define DISABLE_BRANCH_PROFILING -#endif - #include <linux/kernel.h> #include <linux/time.h> #include <linux/string.h> @@ -26,16 +21,19 @@ #include <asm/clocksource.h> #include <asm/vvar.h> -#undef TICK_PRIV_BIT #ifdef CONFIG_SPARC64 -#define TICK_PRIV_BIT (1UL << 63) -#else -#define TICK_PRIV_BIT (1ULL << 63) -#endif - #define SYSCALL_STRING \ "ta 0x6d;" \ - "sub %%g0, %%o0, %%o0;" \ + "bcs,a 1f;" \ + " sub %%g0, %%o0, %%o0;" \ + "1:" +#else +#define SYSCALL_STRING \ + "ta 0x10;" \ + "bcs,a 1f;" \ + " sub %%g0, %%o0, %%o0;" \ + "1:" +#endif #define SYSCALL_CLOBBERS \ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ @@ -50,24 +48,22 @@ * Compute the vvar page's address in the process address space, and return it * as a pointer to the vvar_data. */ -static notrace noinline struct vvar_data * -get_vvar_data(void) +notrace static __always_inline struct vvar_data *get_vvar_data(void) { unsigned long ret; /* - * vdso data page is the first vDSO page so grab the return address + * vdso data page is the first vDSO page so grab the PC * and move up a page to get to the data page. */ - ret = (unsigned long)__builtin_return_address(0); + __asm__("rd %%pc, %0" : "=r" (ret)); ret &= ~(8192 - 1); ret -= 8192; return (struct vvar_data *) ret; } -static notrace long -vdso_fallback_gettime(long clock, struct timespec *ts) +notrace static long vdso_fallback_gettime(long clock, struct timespec *ts) { register long num __asm__("g1") = __NR_clock_gettime; register long o0 __asm__("o0") = clock; @@ -78,8 +74,7 @@ vdso_fallback_gettime(long clock, struct timespec *ts) return o0; } -static notrace __always_inline long -vdso_fallback_gettimeofday(struct timeval *tv, struct timezone *tz) +notrace static long vdso_fallback_gettimeofday(struct timeval *tv, struct timezone *tz) { register long num __asm__("g1") = __NR_gettimeofday; register long o0 __asm__("o0") = (long) tv; @@ -91,38 +86,44 @@ vdso_fallback_gettimeofday(struct timeval *tv, struct timezone *tz) } #ifdef CONFIG_SPARC64 -static notrace noinline u64 -vread_tick(void) { +notrace static __always_inline u64 vread_tick(void) +{ + u64 ret; + + __asm__ __volatile__("rd %%tick, %0" : "=r" (ret)); + return ret; +} + +notrace static __always_inline u64 vread_tick_stick(void) +{ u64 ret; - __asm__ __volatile__("rd %%asr24, %0 \n" - ".section .vread_tick_patch, \"ax\" \n" - "rd %%tick, %0 \n" - ".previous \n" - : "=&r" (ret)); - return ret & ~TICK_PRIV_BIT; + __asm__ __volatile__("rd %%asr24, %0" : "=r" (ret)); + return ret; } #else -static notrace noinline u64 -vread_tick(void) +notrace static __always_inline u64 vread_tick(void) { - unsigned int lo, hi; - - __asm__ __volatile__("rd %%asr24, %%g1\n\t" - "srlx %%g1, 32, %1\n\t" - "srl %%g1, 0, %0\n" - ".section .vread_tick_patch, \"ax\" \n" - "rd %%tick, %%g1\n" - ".previous \n" - : "=&r" (lo), "=&r" (hi) - : - : "g1"); - return lo | ((u64)hi << 32); + register unsigned long long ret asm("o4"); + + __asm__ __volatile__("rd %%tick, %L0\n\t" + "srlx %L0, 32, %H0" + : "=r" (ret)); + return ret; +} + +notrace static __always_inline u64 vread_tick_stick(void) +{ + register unsigned long long ret asm("o4"); + + __asm__ __volatile__("rd %%asr24, %L0\n\t" + "srlx %L0, 32, %H0" + : "=r" (ret)); + return ret; } #endif -static notrace inline u64 -vgetsns(struct vvar_data *vvar) +notrace static __always_inline u64 vgetsns(struct vvar_data *vvar) { u64 v; u64 cycles; @@ -132,13 +133,22 @@ vgetsns(struct vvar_data *vvar) return v * vvar->clock.mult; } -static notrace noinline int -do_realtime(struct vvar_data *vvar, struct timespec *ts) +notrace static __always_inline u64 vgetsns_stick(struct vvar_data *vvar) +{ + u64 v; + u64 cycles; + + cycles = vread_tick_stick(); + v = (cycles - vvar->clock.cycle_last) & vvar->clock.mask; + return v * vvar->clock.mult; +} + +notrace static __always_inline int do_realtime(struct vvar_data *vvar, + struct timespec *ts) { unsigned long seq; u64 ns; - ts->tv_nsec = 0; do { seq = vvar_read_begin(vvar); ts->tv_sec = vvar->wall_time_sec; @@ -147,18 +157,38 @@ do_realtime(struct vvar_data *vvar, struct timespec *ts) ns >>= vvar->clock.shift; } while (unlikely(vvar_read_retry(vvar, seq))); - timespec_add_ns(ts, ns); + ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns); + ts->tv_nsec = ns; return 0; } -static notrace noinline int -do_monotonic(struct vvar_data *vvar, struct timespec *ts) +notrace static __always_inline int do_realtime_stick(struct vvar_data *vvar, + struct timespec *ts) +{ + unsigned long seq; + u64 ns; + + do { + seq = vvar_read_begin(vvar); + ts->tv_sec = vvar->wall_time_sec; + ns = vvar->wall_time_snsec; + ns += vgetsns_stick(vvar); + ns >>= vvar->clock.shift; + } while (unlikely(vvar_read_retry(vvar, seq))); + + ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns); + ts->tv_nsec = ns; + + return 0; +} + +notrace static __always_inline int do_monotonic(struct vvar_data *vvar, + struct timespec *ts) { unsigned long seq; u64 ns; - ts->tv_nsec = 0; do { seq = vvar_read_begin(vvar); ts->tv_sec = vvar->monotonic_time_sec; @@ -167,13 +197,34 @@ do_monotonic(struct vvar_data *vvar, struct timespec *ts) ns >>= vvar->clock.shift; } while (unlikely(vvar_read_retry(vvar, seq))); - timespec_add_ns(ts, ns); + ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns); + ts->tv_nsec = ns; + + return 0; +} + +notrace static __always_inline int do_monotonic_stick(struct vvar_data *vvar, + struct timespec *ts) +{ + unsigned long seq; + u64 ns; + + do { + seq = vvar_read_begin(vvar); + ts->tv_sec = vvar->monotonic_time_sec; + ns = vvar->monotonic_time_snsec; + ns += vgetsns_stick(vvar); + ns >>= vvar->clock.shift; + } while (unlikely(vvar_read_retry(vvar, seq))); + + ts->tv_sec += __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns); + ts->tv_nsec = ns; return 0; } -static notrace noinline int -do_realtime_coarse(struct vvar_data *vvar, struct timespec *ts) +notrace static int do_realtime_coarse(struct vvar_data *vvar, + struct timespec *ts) { unsigned long seq; @@ -185,8 +236,8 @@ do_realtime_coarse(struct vvar_data *vvar, struct timespec *ts) return 0; } -static notrace noinline int -do_monotonic_coarse(struct vvar_data *vvar, struct timespec *ts) +notrace static int do_monotonic_coarse(struct vvar_data *vvar, + struct timespec *ts) { unsigned long seq; @@ -228,6 +279,31 @@ clock_gettime(clockid_t, struct timespec *) __attribute__((weak, alias("__vdso_clock_gettime"))); notrace int +__vdso_clock_gettime_stick(clockid_t clock, struct timespec *ts) +{ + struct vvar_data *vvd = get_vvar_data(); + + switch (clock) { + case CLOCK_REALTIME: + if (unlikely(vvd->vclock_mode == VCLOCK_NONE)) + break; + return do_realtime_stick(vvd, ts); + case CLOCK_MONOTONIC: + if (unlikely(vvd->vclock_mode == VCLOCK_NONE)) + break; + return do_monotonic_stick(vvd, ts); + case CLOCK_REALTIME_COARSE: + return do_realtime_coarse(vvd, ts); + case CLOCK_MONOTONIC_COARSE: + return do_monotonic_coarse(vvd, ts); + } + /* + * Unknown clock ID ? Fall back to the syscall. + */ + return vdso_fallback_gettime(clock, ts); +} + +notrace int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) { struct vvar_data *vvd = get_vvar_data(); @@ -262,3 +338,36 @@ __vdso_gettimeofday(struct timeval *tv, struct timezone *tz) int gettimeofday(struct timeval *, struct timezone *) __attribute__((weak, alias("__vdso_gettimeofday"))); + +notrace int +__vdso_gettimeofday_stick(struct timeval *tv, struct timezone *tz) +{ + struct vvar_data *vvd = get_vvar_data(); + + if (likely(vvd->vclock_mode != VCLOCK_NONE)) { + if (likely(tv != NULL)) { + union tstv_t { + struct timespec ts; + struct timeval tv; + } *tstv = (union tstv_t *) tv; + do_realtime_stick(vvd, &tstv->ts); + /* + * Assign before dividing to ensure that the division is + * done in the type of tv_usec, not tv_nsec. + * + * There cannot be > 1 billion usec in a second: + * do_realtime() has already distributed such overflow + * into tv_sec. So we can assign it to an int safely. + */ + tstv->tv.tv_usec = tstv->ts.tv_nsec; + tstv->tv.tv_usec /= 1000; + } + if (unlikely(tz != NULL)) { + /* Avoid memcpy. Some old compilers fail to inline it */ + tz->tz_minuteswest = vvd->tz_minuteswest; + tz->tz_dsttime = vvd->tz_dsttime; + } + return 0; + } + return vdso_fallback_gettimeofday(tv, tz); +} diff --git a/arch/sparc/vdso/vdso-layout.lds.S b/arch/sparc/vdso/vdso-layout.lds.S index f2c83abaca12..d31e57e8a3bb 100644 --- a/arch/sparc/vdso/vdso-layout.lds.S +++ b/arch/sparc/vdso/vdso-layout.lds.S @@ -73,12 +73,6 @@ SECTIONS .text : { *(.text*) } :text =0x90909090, - .vread_tick_patch : { - vread_tick_patch_start = .; - *(.vread_tick_patch) - vread_tick_patch_end = .; - } - /DISCARD/ : { *(.discard) *(.discard.*) diff --git a/arch/sparc/vdso/vdso.lds.S b/arch/sparc/vdso/vdso.lds.S index f3caa29a331c..629ab6900df7 100644 --- a/arch/sparc/vdso/vdso.lds.S +++ b/arch/sparc/vdso/vdso.lds.S @@ -18,8 +18,10 @@ VERSION { global: clock_gettime; __vdso_clock_gettime; + __vdso_clock_gettime_stick; gettimeofday; __vdso_gettimeofday; + __vdso_gettimeofday_stick; local: *; }; } diff --git a/arch/sparc/vdso/vdso2c.c b/arch/sparc/vdso/vdso2c.c index 9f5b1cd6d51d..ab7504176a7f 100644 --- a/arch/sparc/vdso/vdso2c.c +++ b/arch/sparc/vdso/vdso2c.c @@ -63,9 +63,6 @@ enum { sym_vvar_start, sym_VDSO_FAKE_SECTION_TABLE_START, sym_VDSO_FAKE_SECTION_TABLE_END, - sym_vread_tick, - sym_vread_tick_patch_start, - sym_vread_tick_patch_end }; struct vdso_sym { @@ -81,9 +78,6 @@ struct vdso_sym required_syms[] = { [sym_VDSO_FAKE_SECTION_TABLE_END] = { "VDSO_FAKE_SECTION_TABLE_END", 0 }, - [sym_vread_tick] = {"vread_tick", 1}, - [sym_vread_tick_patch_start] = {"vread_tick_patch_start", 1}, - [sym_vread_tick_patch_end] = {"vread_tick_patch_end", 1} }; __attribute__((format(printf, 1, 2))) __attribute__((noreturn)) diff --git a/arch/sparc/vdso/vdso2c.h b/arch/sparc/vdso/vdso2c.h index 808decb0f7be..60d69acc748f 100644 --- a/arch/sparc/vdso/vdso2c.h +++ b/arch/sparc/vdso/vdso2c.h @@ -17,7 +17,6 @@ static void BITSFUNC(go)(void *raw_addr, size_t raw_len, unsigned long mapping_size; int i; unsigned long j; - ELF(Shdr) *symtab_hdr = NULL, *strtab_hdr; ELF(Ehdr) *hdr = (ELF(Ehdr) *)raw_addr; ELF(Dyn) *dyn = 0, *dyn_end = 0; diff --git a/arch/sparc/vdso/vdso32/vdso32.lds.S b/arch/sparc/vdso/vdso32/vdso32.lds.S index 53575ee154c4..218930fdff03 100644 --- a/arch/sparc/vdso/vdso32/vdso32.lds.S +++ b/arch/sparc/vdso/vdso32/vdso32.lds.S @@ -17,8 +17,10 @@ VERSION { global: clock_gettime; __vdso_clock_gettime; + __vdso_clock_gettime_stick; gettimeofday; __vdso_gettimeofday; + __vdso_gettimeofday_stick; local: *; }; } diff --git a/arch/sparc/vdso/vma.c b/arch/sparc/vdso/vma.c index f51595f861b8..154fe8adc090 100644 --- a/arch/sparc/vdso/vma.c +++ b/arch/sparc/vdso/vma.c @@ -16,6 +16,8 @@ #include <linux/linkage.h> #include <linux/random.h> #include <linux/elf.h> +#include <asm/cacheflush.h> +#include <asm/spitfire.h> #include <asm/vdso.h> #include <asm/vvar.h> #include <asm/page.h> @@ -40,20 +42,221 @@ static struct vm_special_mapping vdso_mapping32 = { struct vvar_data *vvar_data; -#define SAVE_INSTR_SIZE 4 +struct vdso_elfinfo32 { + Elf32_Ehdr *hdr; + Elf32_Sym *dynsym; + unsigned long dynsymsize; + const char *dynstr; + unsigned long text; +}; + +struct vdso_elfinfo64 { + Elf64_Ehdr *hdr; + Elf64_Sym *dynsym; + unsigned long dynsymsize; + const char *dynstr; + unsigned long text; +}; + +struct vdso_elfinfo { + union { + struct vdso_elfinfo32 elf32; + struct vdso_elfinfo64 elf64; + } u; +}; + +static void *one_section64(struct vdso_elfinfo64 *e, const char *name, + unsigned long *size) +{ + const char *snames; + Elf64_Shdr *shdrs; + unsigned int i; + + shdrs = (void *)e->hdr + e->hdr->e_shoff; + snames = (void *)e->hdr + shdrs[e->hdr->e_shstrndx].sh_offset; + for (i = 1; i < e->hdr->e_shnum; i++) { + if (!strcmp(snames+shdrs[i].sh_name, name)) { + if (size) + *size = shdrs[i].sh_size; + return (void *)e->hdr + shdrs[i].sh_offset; + } + } + return NULL; +} + +static int find_sections64(const struct vdso_image *image, struct vdso_elfinfo *_e) +{ + struct vdso_elfinfo64 *e = &_e->u.elf64; + + e->hdr = image->data; + e->dynsym = one_section64(e, ".dynsym", &e->dynsymsize); + e->dynstr = one_section64(e, ".dynstr", NULL); + + if (!e->dynsym || !e->dynstr) { + pr_err("VDSO64: Missing symbol sections.\n"); + return -ENODEV; + } + return 0; +} + +static Elf64_Sym *find_sym64(const struct vdso_elfinfo64 *e, const char *name) +{ + unsigned int i; + + for (i = 0; i < (e->dynsymsize / sizeof(Elf64_Sym)); i++) { + Elf64_Sym *s = &e->dynsym[i]; + if (s->st_name == 0) + continue; + if (!strcmp(e->dynstr + s->st_name, name)) + return s; + } + return NULL; +} + +static int patchsym64(struct vdso_elfinfo *_e, const char *orig, + const char *new) +{ + struct vdso_elfinfo64 *e = &_e->u.elf64; + Elf64_Sym *osym = find_sym64(e, orig); + Elf64_Sym *nsym = find_sym64(e, new); + + if (!nsym || !osym) { + pr_err("VDSO64: Missing symbols.\n"); + return -ENODEV; + } + osym->st_value = nsym->st_value; + osym->st_size = nsym->st_size; + osym->st_info = nsym->st_info; + osym->st_other = nsym->st_other; + osym->st_shndx = nsym->st_shndx; + + return 0; +} + +static void *one_section32(struct vdso_elfinfo32 *e, const char *name, + unsigned long *size) +{ + const char *snames; + Elf32_Shdr *shdrs; + unsigned int i; + + shdrs = (void *)e->hdr + e->hdr->e_shoff; + snames = (void *)e->hdr + shdrs[e->hdr->e_shstrndx].sh_offset; + for (i = 1; i < e->hdr->e_shnum; i++) { + if (!strcmp(snames+shdrs[i].sh_name, name)) { + if (size) + *size = shdrs[i].sh_size; + return (void *)e->hdr + shdrs[i].sh_offset; + } + } + return NULL; +} + +static int find_sections32(const struct vdso_image *image, struct vdso_elfinfo *_e) +{ + struct vdso_elfinfo32 *e = &_e->u.elf32; + + e->hdr = image->data; + e->dynsym = one_section32(e, ".dynsym", &e->dynsymsize); + e->dynstr = one_section32(e, ".dynstr", NULL); + + if (!e->dynsym || !e->dynstr) { + pr_err("VDSO32: Missing symbol sections.\n"); + return -ENODEV; + } + return 0; +} + +static Elf32_Sym *find_sym32(const struct vdso_elfinfo32 *e, const char *name) +{ + unsigned int i; + + for (i = 0; i < (e->dynsymsize / sizeof(Elf32_Sym)); i++) { + Elf32_Sym *s = &e->dynsym[i]; + if (s->st_name == 0) + continue; + if (!strcmp(e->dynstr + s->st_name, name)) + return s; + } + return NULL; +} + +static int patchsym32(struct vdso_elfinfo *_e, const char *orig, + const char *new) +{ + struct vdso_elfinfo32 *e = &_e->u.elf32; + Elf32_Sym *osym = find_sym32(e, orig); + Elf32_Sym *nsym = find_sym32(e, new); + + if (!nsym || !osym) { + pr_err("VDSO32: Missing symbols.\n"); + return -ENODEV; + } + osym->st_value = nsym->st_value; + osym->st_size = nsym->st_size; + osym->st_info = nsym->st_info; + osym->st_other = nsym->st_other; + osym->st_shndx = nsym->st_shndx; + + return 0; +} + +static int find_sections(const struct vdso_image *image, struct vdso_elfinfo *e, + bool elf64) +{ + if (elf64) + return find_sections64(image, e); + else + return find_sections32(image, e); +} + +static int patch_one_symbol(struct vdso_elfinfo *e, const char *orig, + const char *new_target, bool elf64) +{ + if (elf64) + return patchsym64(e, orig, new_target); + else + return patchsym32(e, orig, new_target); +} + +static int stick_patch(const struct vdso_image *image, struct vdso_elfinfo *e, bool elf64) +{ + int err; + + err = find_sections(image, e, elf64); + if (err) + return err; + + err = patch_one_symbol(e, + "__vdso_gettimeofday", + "__vdso_gettimeofday_stick", elf64); + if (err) + return err; + + return patch_one_symbol(e, + "__vdso_clock_gettime", + "__vdso_clock_gettime_stick", elf64); + return 0; +} /* * Allocate pages for the vdso and vvar, and copy in the vdso text from the * kernel image. */ int __init init_vdso_image(const struct vdso_image *image, - struct vm_special_mapping *vdso_mapping) + struct vm_special_mapping *vdso_mapping, bool elf64) { - int i; + int cnpages = (image->size) / PAGE_SIZE; struct page *dp, **dpp = NULL; - int dnpages = 0; struct page *cp, **cpp = NULL; - int cnpages = (image->size) / PAGE_SIZE; + struct vdso_elfinfo ei; + int i, dnpages = 0; + + if (tlb_type != spitfire) { + int err = stick_patch(image, &ei, elf64); + if (err) + return err; + } /* * First, the vdso text. This is initialied data, an integral number of @@ -68,22 +271,6 @@ int __init init_vdso_image(const struct vdso_image *image, if (!cpp) goto oom; - if (vdso_fix_stick) { - /* - * If the system uses %tick instead of %stick, patch the VDSO - * with instruction reading %tick instead of %stick. - */ - unsigned int j, k = SAVE_INSTR_SIZE; - unsigned char *data = image->data; - - for (j = image->sym_vread_tick_patch_start; - j < image->sym_vread_tick_patch_end; j++) { - - data[image->sym_vread_tick + k] = data[j]; - k++; - } - } - for (i = 0; i < cnpages; i++) { cp = alloc_page(GFP_KERNEL); if (!cp) @@ -146,13 +333,13 @@ static int __init init_vdso(void) { int err = 0; #ifdef CONFIG_SPARC64 - err = init_vdso_image(&vdso_image_64_builtin, &vdso_mapping64); + err = init_vdso_image(&vdso_image_64_builtin, &vdso_mapping64, true); if (err) return err; #endif #ifdef CONFIG_COMPAT - err = init_vdso_image(&vdso_image_32_builtin, &vdso_mapping32); + err = init_vdso_image(&vdso_image_32_builtin, &vdso_mapping32, false); #endif return err; @@ -262,7 +449,9 @@ static __init int vdso_setup(char *s) unsigned long val; err = kstrtoul(s, 10, &val); + if (err) + return err; vdso_enabled = val; - return err; + return 0; } __setup("vdso=", vdso_setup); |
