diff options
Diffstat (limited to 'arch/um')
45 files changed, 1112 insertions, 283 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 9469e77303e..f945444df49 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -128,7 +128,6 @@ config HOSTFS config HPPFS tristate "HoneyPot ProcFS (EXPERIMENTAL)" - depends on BROKEN help hppfs (HoneyPot ProcFS) is a filesystem which allows UML /proc entries to be overridden, removed, or fabricated from the host. @@ -141,8 +140,9 @@ config HPPFS You only need this if you are setting up a UML honeypot. Otherwise, it is safe to say 'N' here. - If you are actively using it, please ask for it to be fixed. In this - moment, it does not work on 2.6 (it works somehow on 2.4). + If you are actively using it, please report any problems, since it's + getting fixed. In this moment, it is experimental on 2.6 (it works on + 2.4). config MCONSOLE bool "Management console" @@ -275,6 +275,8 @@ endmenu source "init/Kconfig" +source "net/Kconfig" + source "drivers/base/Kconfig" source "arch/um/Kconfig_char" @@ -287,7 +289,7 @@ config NETDEVICES source "arch/um/Kconfig_net" -source "net/Kconfig" +source "drivers/net/Kconfig" source "fs/Kconfig" diff --git a/arch/um/Kconfig_i386 b/arch/um/Kconfig_i386 index e41f3748d30..27c18a8d9d1 100644 --- a/arch/um/Kconfig_i386 +++ b/arch/um/Kconfig_i386 @@ -19,6 +19,18 @@ config 3_LEVEL_PGTABLES memory. All the memory that can't be mapped directly will be treated as high memory. +config STUB_CODE + hex + default 0xbfffe000 + +config STUB_DATA + hex + default 0xbffff000 + +config STUB_START + hex + default STUB_CODE + config ARCH_HAS_SC_SIGNALS bool default y diff --git a/arch/um/Kconfig_x86_64 b/arch/um/Kconfig_x86_64 index f162f50f0b1..735a047c890 100644 --- a/arch/um/Kconfig_x86_64 +++ b/arch/um/Kconfig_x86_64 @@ -14,6 +14,18 @@ config 3_LEVEL_PGTABLES bool default y +config STUB_CODE + hex + default 0x7fbfffe000 + +config STUB_DATA + hex + default 0x7fbffff000 + +config STUB_START + hex + default STUB_CODE + config ARCH_HAS_SC_SIGNALS bool default n diff --git a/arch/um/Makefile b/arch/um/Makefile index 3f073902351..4a375bbac10 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -140,7 +140,8 @@ endef #When cleaning we don't include .config, so we don't include #TT or skas makefiles and don't clean skas_ptregs.h. CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \ - $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h + $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h \ + $(ARCH_DIR)/include/user_constants.h MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \ $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \ diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386 index 29e182d5a83..301059062a3 100644 --- a/arch/um/Makefile-i386 +++ b/arch/um/Makefile-i386 @@ -8,7 +8,7 @@ ifeq ($(CONFIG_MODE_SKAS),y) endif endif -CFLAGS += -U__$(SUBARCH)__ -U$(SUBARCH) +CFLAGS += -U__$(SUBARCH)__ -U$(SUBARCH) $(STUB_CFLAGS) ARCH_USER_CFLAGS := ifneq ($(CONFIG_GPROF),y) diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64 index 32144562c27..d80bd0052e6 100644 --- a/arch/um/Makefile-x86_64 +++ b/arch/um/Makefile-x86_64 @@ -4,7 +4,7 @@ SUBARCH_LIBS := arch/um/sys-x86_64/ START := 0x60000000 -CFLAGS += -U__$(SUBARCH)__ -fno-builtin +CFLAGS += -U__$(SUBARCH)__ -fno-builtin $(STUB_CFLAGS) ARCH_USER_CFLAGS := -D__x86_64__ ELF_ARCH := i386:x86-64 diff --git a/arch/um/defconfig b/arch/um/defconfig index 4067c3aa5b6..80d30d19d75 100644 --- a/arch/um/defconfig +++ b/arch/um/defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.12-rc3-skas3-v9-pre2 -# Sun Apr 24 19:46:10 2005 +# Linux kernel version: 2.6.12-rc6-mm1 +# Tue Jun 14 18:22:21 2005 # CONFIG_GENERIC_HARDIRQS=y CONFIG_UML=y @@ -13,23 +13,32 @@ CONFIG_GENERIC_CALIBRATE_DELAY=y # # UML-specific options # -CONFIG_MODE_TT=y +# CONFIG_MODE_TT is not set +# CONFIG_STATIC_LINK is not set CONFIG_MODE_SKAS=y CONFIG_UML_X86=y # CONFIG_64BIT is not set CONFIG_TOP_ADDR=0xc0000000 # CONFIG_3_LEVEL_PGTABLES is not set +CONFIG_STUB_CODE=0xbfffe000 +CONFIG_STUB_DATA=0xbffff000 +CONFIG_STUB_START=0xbfffe000 CONFIG_ARCH_HAS_SC_SIGNALS=y CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=y -CONFIG_LD_SCRIPT_STATIC=y +CONFIG_SELECT_MEMORY_MODEL=y +CONFIG_FLATMEM_MANUAL=y +# CONFIG_DISCONTIGMEM_MANUAL is not set +# CONFIG_SPARSEMEM_MANUAL is not set +CONFIG_FLATMEM=y +CONFIG_FLAT_NODE_MEM_MAP=y +CONFIG_LD_SCRIPT_DYN=y CONFIG_NET=y CONFIG_BINFMT_ELF=y CONFIG_BINFMT_MISC=m -CONFIG_HOSTFS=y +# CONFIG_HOSTFS is not set CONFIG_MCONSOLE=y # CONFIG_MAGIC_SYSRQ is not set # CONFIG_HOST_2G_2G is not set -# CONFIG_SMP is not set CONFIG_NEST_LEVEL=0 CONFIG_KERNEL_HALF_GIGS=1 # CONFIG_HIGHMEM is not set @@ -63,6 +72,8 @@ CONFIG_IKCONFIG_PROC=y CONFIG_KALLSYMS=y # CONFIG_KALLSYMS_ALL is not set CONFIG_KALLSYMS_EXTRA_PASS=y +CONFIG_PRINTK=y +CONFIG_BUG=y CONFIG_BASE_FULL=y CONFIG_FUTEX=y CONFIG_EPOLL=y @@ -81,6 +92,7 @@ CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y # CONFIG_MODULE_FORCE_UNLOAD is not set CONFIG_OBSOLETE_MODPARM=y +# CONFIG_MODVERSIONS is not set # CONFIG_MODULE_SRCVERSION_ALL is not set CONFIG_KMOD=y @@ -115,6 +127,7 @@ CONFIG_UML_SOUND=m CONFIG_SOUND=m CONFIG_HOSTAUDIO=m CONFIG_UML_RANDOM=y +# CONFIG_MMAPPER is not set # # Block devices @@ -176,6 +189,17 @@ CONFIG_INET=y # CONFIG_INET_TUNNEL is not set CONFIG_IP_TCPDIAG=y # CONFIG_IP_TCPDIAG_IPV6 is not set + +# +# TCP congestion control +# +CONFIG_TCP_CONG_BIC=y +CONFIG_TCP_CONG_WESTWOOD=y +CONFIG_TCP_CONG_HTCP=y +# CONFIG_TCP_CONG_HSTCP is not set +# CONFIG_TCP_CONG_HYBLA is not set +# CONFIG_TCP_CONG_VEGAS is not set +# CONFIG_TCP_CONG_SCALABLE is not set # CONFIG_IPV6 is not set # CONFIG_NETFILTER is not set @@ -206,11 +230,15 @@ CONFIG_IP_TCPDIAG=y # Network testing # # CONFIG_NET_PKTGEN is not set +# CONFIG_KGDBOE is not set # CONFIG_NETPOLL is not set +# CONFIG_NETPOLL_RX is not set +# CONFIG_NETPOLL_TRAP is not set # CONFIG_NET_POLL_CONTROLLER is not set # CONFIG_HAMRADIO is not set # CONFIG_IRDA is not set # CONFIG_BT is not set +# CONFIG_IEEE80211 is not set CONFIG_DUMMY=m # CONFIG_BONDING is not set # CONFIG_EQUALIZER is not set @@ -227,6 +255,7 @@ CONFIG_PPP=m # CONFIG_PPP_SYNC_TTY is not set # CONFIG_PPP_DEFLATE is not set # CONFIG_PPP_BSDCOMP is not set +# CONFIG_PPP_MPPE is not set # CONFIG_PPPOE is not set CONFIG_SLIP=m # CONFIG_SLIP_COMPRESSED is not set @@ -240,10 +269,12 @@ CONFIG_SLIP=m # CONFIG_EXT2_FS=y # CONFIG_EXT2_FS_XATTR is not set +# CONFIG_EXT2_FS_XIP is not set CONFIG_EXT3_FS=y # CONFIG_EXT3_FS_XATTR is not set CONFIG_JBD=y # CONFIG_JBD_DEBUG is not set +# CONFIG_REISER4_FS is not set CONFIG_REISERFS_FS=y # CONFIG_REISERFS_CHECK is not set # CONFIG_REISERFS_PROC_INFO is not set @@ -256,6 +287,7 @@ CONFIG_REISERFS_FS=y # CONFIG_XFS_FS is not set # CONFIG_MINIX_FS is not set # CONFIG_ROMFS_FS is not set +CONFIG_INOTIFY=y CONFIG_QUOTA=y # CONFIG_QFMT_V1 is not set # CONFIG_QFMT_V2 is not set @@ -265,6 +297,12 @@ CONFIG_AUTOFS_FS=m CONFIG_AUTOFS4_FS=m # +# Caches +# +# CONFIG_FSCACHE is not set +# CONFIG_FUSE_FS is not set + +# # CD-ROM/DVD Filesystems # CONFIG_ISO9660_FS=m @@ -291,6 +329,8 @@ CONFIG_TMPFS=y # CONFIG_TMPFS_XATTR is not set # CONFIG_HUGETLB_PAGE is not set CONFIG_RAMFS=y +# CONFIG_CONFIGFS_FS is not set +# CONFIG_RELAYFS_FS is not set # # Miscellaneous filesystems @@ -319,6 +359,7 @@ CONFIG_RAMFS=y # CONFIG_NCP_FS is not set # CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set +# CONFIG_9P_FS is not set # # Partition Types @@ -404,14 +445,15 @@ CONFIG_CRC32=m # CONFIG_PRINTK_TIME is not set CONFIG_DEBUG_KERNEL=y CONFIG_LOG_BUF_SHIFT=14 +CONFIG_DETECT_SOFTLOCKUP=y # CONFIG_SCHEDSTATS is not set -# CONFIG_DEBUG_SLAB is not set +CONFIG_DEBUG_SLAB=y # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_SPINLOCK_SLEEP is not set # CONFIG_DEBUG_KOBJECT is not set CONFIG_DEBUG_INFO=y # CONFIG_DEBUG_FS is not set CONFIG_FRAME_POINTER=y -CONFIG_PT_PROXY=y +# CONFIG_GPROF is not set # CONFIG_GCOV is not set # CONFIG_SYSCALL_DEBUG is not set diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 2bb4c4f5dec..e0fdffa2d54 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -663,11 +663,15 @@ struct tty_driver *line_register_devfs(struct lines *set, return driver; } +static spinlock_t winch_handler_lock; +LIST_HEAD(winch_handlers); + void lines_init(struct line *lines, int nlines) { struct line *line; int i; + spin_lock_init(&winch_handler_lock); for(i = 0; i < nlines; i++){ line = &lines[i]; INIT_LIST_HEAD(&line->chan_list); @@ -724,31 +728,30 @@ irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused) return IRQ_HANDLED; } -DECLARE_MUTEX(winch_handler_sem); -LIST_HEAD(winch_handlers); - void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty) { struct winch *winch; - down(&winch_handler_sem); winch = kmalloc(sizeof(*winch), GFP_KERNEL); if (winch == NULL) { printk("register_winch_irq - kmalloc failed\n"); - goto out; + return; } + *winch = ((struct winch) { .list = LIST_HEAD_INIT(winch->list), .fd = fd, .tty_fd = tty_fd, .pid = pid, .tty = tty }); + + spin_lock(&winch_handler_lock); list_add(&winch->list, &winch_handlers); + spin_unlock(&winch_handler_lock); + if(um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt, SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM, "winch", winch) < 0) printk("register_winch_irq - failed to register IRQ\n"); - out: - up(&winch_handler_sem); } static void unregister_winch(struct tty_struct *tty) @@ -756,7 +759,7 @@ static void unregister_winch(struct tty_struct *tty) struct list_head *ele; struct winch *winch, *found = NULL; - down(&winch_handler_sem); + spin_lock(&winch_handler_lock); list_for_each(ele, &winch_handlers){ winch = list_entry(ele, struct winch, list); if(winch->tty == tty){ @@ -764,20 +767,25 @@ static void unregister_winch(struct tty_struct *tty) break; } } - if(found == NULL) - goto out; + goto err; + + list_del(&winch->list); + spin_unlock(&winch_handler_lock); if(winch->pid != -1) os_kill_process(winch->pid, 1); free_irq(WINCH_IRQ, winch); - list_del(&winch->list); kfree(winch); - out: - up(&winch_handler_sem); + + return; +err: + spin_unlock(&winch_handler_lock); } +/* XXX: No lock as it's an exitcall... is this valid? Depending on cleanup + * order... are we sure that nothing else is done on the list? */ static void winch_cleanup(void) { struct list_head *ele; @@ -786,6 +794,9 @@ static void winch_cleanup(void) list_for_each(ele, &winch_handlers){ winch = list_entry(ele, struct winch, list); if(winch->fd != -1){ + /* Why is this different from the above free_irq(), + * which deactivates SIGIO? This searches the FD + * somewhere else and removes it from the list... */ deactivate_fd(winch->fd, WINCH_IRQ); os_close_file(winch->fd); } diff --git a/arch/um/include/mem.h b/arch/um/include/mem.h index 10c46c38949..99d3ad4a03e 100644 --- a/arch/um/include/mem.h +++ b/arch/um/include/mem.h @@ -13,6 +13,7 @@ extern int physmem_subst_mapping(void *virt, int fd, __u64 offset, int w); extern int is_remapped(void *virt); extern int physmem_remove_mapping(void *virt); extern void physmem_forget_descriptor(int fd); +extern unsigned long to_phys(void *virt); #endif diff --git a/arch/um/include/registers.h b/arch/um/include/registers.h index 8744abb5224..0a35e6d0baa 100644 --- a/arch/um/include/registers.h +++ b/arch/um/include/registers.h @@ -14,6 +14,7 @@ extern int restore_fp_registers(int pid, unsigned long *fp_regs); extern void save_registers(int pid, union uml_pt_regs *regs); extern void restore_registers(int pid, union uml_pt_regs *regs); extern void init_registers(int pid); +extern void get_safe_registers(unsigned long * regs); #endif diff --git a/arch/um/include/sysdep-i386/ptrace_user.h b/arch/um/include/sysdep-i386/ptrace_user.h index eca8066e7a4..899aa4b2a78 100644 --- a/arch/um/include/sysdep-i386/ptrace_user.h +++ b/arch/um/include/sysdep-i386/ptrace_user.h @@ -20,11 +20,24 @@ #define PT_SYSCALL_ARG3_OFFSET PT_OFFSET(EDX) #define PT_SYSCALL_ARG4_OFFSET PT_OFFSET(ESI) #define PT_SYSCALL_ARG5_OFFSET PT_OFFSET(EDI) +#define PT_SYSCALL_ARG6_OFFSET PT_OFFSET(EBP) #define PT_SYSCALL_RET_OFFSET PT_OFFSET(EAX) +#define REGS_SYSCALL_NR EAX /* This is used before a system call */ +#define REGS_SYSCALL_ARG1 EBX +#define REGS_SYSCALL_ARG2 ECX +#define REGS_SYSCALL_ARG3 EDX +#define REGS_SYSCALL_ARG4 ESI +#define REGS_SYSCALL_ARG5 EDI +#define REGS_SYSCALL_ARG6 EBP + +#define REGS_IP_INDEX EIP +#define REGS_SP_INDEX UESP + #define PT_IP_OFFSET PT_OFFSET(EIP) #define PT_IP(regs) ((regs)[EIP]) +#define PT_SP_OFFSET PT_OFFSET(UESP) #define PT_SP(regs) ((regs)[UESP]) #ifndef FRAME_SIZE diff --git a/arch/um/include/sysdep-i386/stub.h b/arch/um/include/sysdep-i386/stub.h new file mode 100644 index 00000000000..d3699fe1c61 --- /dev/null +++ b/arch/um/include/sysdep-i386/stub.h @@ -0,0 +1,65 @@ +/* + * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_STUB_H +#define __SYSDEP_STUB_H + +#include <asm/ptrace.h> +#include <asm/unistd.h> + +extern void stub_segv_handler(int sig); +extern void stub_clone_handler(void); + +#define STUB_SYSCALL_RET EAX +#define STUB_MMAP_NR __NR_mmap2 +#define MMAP_OFFSET(o) ((o) >> PAGE_SHIFT) + +static inline long stub_syscall2(long syscall, long arg1, long arg2) +{ + long ret; + + __asm__("movl %0, %%ecx; " : : "g" (arg2) : "%ecx"); + __asm__("movl %0, %%ebx; " : : "g" (arg1) : "%ebx"); + __asm__("movl %0, %%eax; " : : "g" (syscall) : "%eax"); + __asm__("int $0x80;" : : : "%eax"); + __asm__ __volatile__("movl %%eax, %0; " : "=g" (ret) :); + return(ret); +} + +static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3) +{ + __asm__("movl %0, %%edx; " : : "g" (arg3) : "%edx"); + return(stub_syscall2(syscall, arg1, arg2)); +} + +static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3, + long arg4) +{ + __asm__("movl %0, %%esi; " : : "g" (arg4) : "%esi"); + return(stub_syscall3(syscall, arg1, arg2, arg3)); +} + +static inline long stub_syscall6(long syscall, long arg1, long arg2, long arg3, + long arg4, long arg5, long arg6) +{ + long ret; + __asm__("movl %0, %%eax; " : : "g" (syscall) : "%eax"); + __asm__("movl %0, %%ebx; " : : "g" (arg1) : "%ebx"); + __asm__("movl %0, %%ecx; " : : "g" (arg2) : "%ecx"); + __asm__("movl %0, %%edx; " : : "g" (arg3) : "%edx"); + __asm__("movl %0, %%esi; " : : "g" (arg4) : "%esi"); + __asm__("movl %0, %%edi; " : : "g" (arg5) : "%edi"); + __asm__ __volatile__("pushl %%ebp ; movl %1, %%ebp; " + "int $0x80; popl %%ebp ; " + "movl %%eax, %0; " : "=g" (ret) : "g" (arg6) : "%eax"); + return(ret); +} + +static inline void trap_myself(void) +{ + __asm("int3"); +} + +#endif diff --git a/arch/um/include/sysdep-x86_64/ptrace_user.h b/arch/um/include/sysdep-x86_64/ptrace_user.h index 31729973fb1..128faf02736 100644 --- a/arch/um/include/sysdep-x86_64/ptrace_user.h +++ b/arch/um/include/sysdep-x86_64/ptrace_user.h @@ -55,6 +55,20 @@ #define PTRACE_OLDSETOPTIONS 21 #endif +/* These are before the system call, so the the system call number is RAX + * rather than ORIG_RAX, and arg4 is R10 rather than RCX + */ +#define REGS_SYSCALL_NR PT_INDEX(RAX) +#define REGS_SYSCALL_ARG1 PT_INDEX(RDI) +#define REGS_SYSCALL_ARG2 PT_INDEX(RSI) +#define REGS_SYSCALL_ARG3 PT_INDEX(RDX) +#define REGS_SYSCALL_ARG4 PT_INDEX(R10) +#define REGS_SYSCALL_ARG5 PT_INDEX(R8) +#define REGS_SYSCALL_ARG6 PT_INDEX(R9) + +#define REGS_IP_INDEX PT_INDEX(RIP) +#define REGS_SP_INDEX PT_INDEX(RSP) + #endif /* diff --git a/arch/um/include/sysdep-x86_64/stub.h b/arch/um/include/sysdep-x86_64/stub.h new file mode 100644 index 00000000000..f599058d826 --- /dev/null +++ b/arch/um/include/sysdep-x86_64/stub.h @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com) + * Licensed under the GPL + */ + +#ifndef __SYSDEP_STUB_H +#define __SYSDEP_STUB_H + +#include <asm/ptrace.h> +#include <asm/unistd.h> +#include <sysdep/ptrace_user.h> + +extern void stub_segv_handler(int sig); +extern void stub_clone_handler(void); + +#define STUB_SYSCALL_RET PT_INDEX(RAX) +#define STUB_MMAP_NR __NR_mmap +#define MMAP_OFFSET(o) (o) + +static inline long stub_syscall2(long syscall, long arg1, long arg2) +{ + long ret; + + __asm__("movq %0, %%rsi; " : : "g" (arg2) : "%rsi"); + __asm__("movq %0, %%rdi; " : : "g" (arg1) : "%rdi"); + __asm__("movq %0, %%rax; " : : "g" (syscall) : "%rax"); + __asm__("syscall;" : : : "%rax", "%r11", "%rcx"); + __asm__ __volatile__("movq %%rax, %0; " : "=g" (ret) :); + return(ret); +} + +static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3) +{ + __asm__("movq %0, %%rdx; " : : "g" (arg3) : "%rdx"); + return(stub_syscall2(syscall, arg1, arg2)); +} + +static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3, + long arg4) +{ + __asm__("movq %0, %%r10; " : : "g" (arg4) : "%r10"); + return(stub_syscall3(syscall, arg1, arg2, arg3)); +} + +static inline long stub_syscall6(long syscall, long arg1, long arg2, long arg3, + long arg4, long arg5, long arg6) +{ + __asm__("movq %0, %%r9; " : : "g" (arg6) : "%r9"); + __asm__("movq %0, %%r8; " : : "g" (arg5) : "%r8"); + return(stub_syscall4(syscall, arg1, arg2, arg3, arg4)); +} + +static inline void trap_myself(void) +{ + __asm("int3"); +} + +#endif diff --git a/arch/um/include/time_user.h b/arch/um/include/time_user.h index f64ef77019a..17d7ef2141f 100644 --- a/arch/um/include/time_user.h +++ b/arch/um/include/time_user.h @@ -10,6 +10,7 @@ extern void timer(void); extern void switch_timers(int to_real); extern void idle_sleep(int secs); extern void enable_timer(void); +extern void prepare_timer(void * ptr); extern void disable_timer(void); extern unsigned long time_lock(void); extern void time_unlock(unsigned long); diff --git a/arch/um/include/tlb.h b/arch/um/include/tlb.h index da1097285b8..c6f9628f39b 100644 --- a/arch/um/include/tlb.h +++ b/arch/um/include/tlb.h @@ -37,31 +37,25 @@ struct host_vm_op { extern void mprotect_kernel_vm(int w); extern void force_flush_all(void); extern void fix_range_common(struct mm_struct *mm, unsigned long start_addr, - unsigned long end_addr, int force, int data, - void (*do_ops)(int, struct host_vm_op *, int)); + unsigned long end_addr, int force, + void (*do_ops)(union mm_context *, + struct host_vm_op *, int)); extern int flush_tlb_kernel_range_common(unsigned long start, unsigned long end); extern int add_mmap(unsigned long virt, unsigned long phys, unsigned long len, int r, int w, int x, struct host_vm_op *ops, int index, - int last_filled, int data, - void (*do_ops)(int, struct host_vm_op *, int)); + int last_filled, union mm_context *mmu, + void (*do_ops)(union mm_context *, struct host_vm_op *, + int)); extern int add_munmap(unsigned long addr, unsigned long len, struct host_vm_op *ops, int index, int last_filled, - int data, void (*do_ops)(int, struct host_vm_op *, int)); + union mm_context *mmu, + void (*do_ops)(union mm_context *, struct host_vm_op *, + int)); extern int add_mprotect(unsigned long addr, unsigned long len, int r, int w, int x, struct host_vm_op *ops, int index, - int last_filled, int data, - void (*do_ops)(int, struct host_vm_op *, int)); + int last_filled, union mm_context *mmu, + void (*do_ops)(union mm_context *, struct host_vm_op *, + int)); #endif - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S index 715b0838a68..3942a5f245d 100644 --- a/arch/um/kernel/dyn.lds.S +++ b/arch/um/kernel/dyn.lds.S @@ -67,6 +67,12 @@ SECTIONS *(.stub .text.* .gnu.linkonce.t.*) /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) + + . = ALIGN(4096); + __syscall_stub_start = .; + *(.__syscall_stub*) + __syscall_stub_end = .; + . = ALIGN(4096); } =0x90909090 .fini : { KEEP (*(.fini)) diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c index 420e6d51fa0..a24e3b7f4bf 100644 --- a/arch/um/kernel/physmem.c +++ b/arch/um/kernel/physmem.c @@ -353,6 +353,8 @@ void map_memory(unsigned long virt, unsigned long phys, unsigned long len, #define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT) +extern int __syscall_stub_start, __binary_start; + void setup_physmem(unsigned long start, unsigned long reserve_end, unsigned long len, unsigned long highmem) { @@ -371,6 +373,12 @@ void setup_physmem(unsigned long start, unsigned long reserve_end, exit(1); } + /* Special kludge - This page will be mapped in to userspace processes + * from physmem_fd, so it needs to be written out there. + */ + os_seek_file(physmem_fd, __pa(&__syscall_stub_start)); + os_write_file(physmem_fd, &__syscall_stub_start, PAGE_SIZE); + bootmap_size = init_bootmem(pfn, pfn + delta); free_bootmem(__pa(reserve_end) + bootmap_size, len - bootmap_size - reserve); diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index 1b5ef3e96c7..c45a60e9c92 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -32,6 +32,7 @@ #include "uml-config.h" |