diff options
46 files changed, 892 insertions, 501 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 8f5f021..29a7940 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -300,6 +300,14 @@ comment "Kernel preemption" source "kernel/Kconfig.preempt" +config ARCH_SPARSEMEM_ENABLE + def_bool y + select SPARSEMEM_VMEMMAP_ENABLE + select SPARSEMEM_VMEMMAP + +config ARCH_SPARSEMEM_DEFAULT + def_bool y + source "mm/Kconfig" comment "I/O subsystem configuration" diff --git a/arch/s390/defconfig b/arch/s390/defconfig index a72f208..aa341d0e 100644 --- a/arch/s390/defconfig +++ b/arch/s390/defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.25-rc4 -# Wed Mar 5 11:22:59 2008 +# Linux kernel version: 2.6.25 +# Wed Apr 30 11:07:45 2008 # CONFIG_SCHED_MC=y CONFIG_MMU=y @@ -14,10 +14,12 @@ CONFIG_RWSEM_XCHGADD_ALGORITHM=y # CONFIG_ARCH_HAS_ILOG2_U64 is not set CONFIG_GENERIC_HWEIGHT=y CONFIG_GENERIC_TIME=y +CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_BUG=y CONFIG_NO_IOMEM=y CONFIG_NO_DMA=y CONFIG_GENERIC_LOCKBREAK=y +CONFIG_PGSTE=y CONFIG_S390=y CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" @@ -43,6 +45,7 @@ CONFIG_LOG_BUF_SHIFT=17 CONFIG_CGROUPS=y # CONFIG_CGROUP_DEBUG is not set CONFIG_CGROUP_NS=y +# CONFIG_CGROUP_DEVICE is not set # CONFIG_CPUSETS is not set CONFIG_GROUP_SCHED=y CONFIG_FAIR_GROUP_SCHED=y @@ -65,6 +68,7 @@ CONFIG_INITRAMFS_SOURCE="" CONFIG_SYSCTL=y # CONFIG_EMBEDDED is not set CONFIG_SYSCTL_SYSCALL=y +CONFIG_SYSCTL_SYSCALL_CHECK=y CONFIG_KALLSYMS=y # CONFIG_KALLSYMS_ALL is not set # CONFIG_KALLSYMS_EXTRA_PASS is not set @@ -92,6 +96,7 @@ CONFIG_KPROBES=y CONFIG_KRETPROBES=y CONFIG_HAVE_KPROBES=y CONFIG_HAVE_KRETPROBES=y +# CONFIG_HAVE_DMA_ATTRS is not set CONFIG_PROC_PAGE_MONITOR=y CONFIG_SLABINFO=y CONFIG_RT_MUTEXES=y @@ -121,8 +126,8 @@ CONFIG_DEFAULT_DEADLINE=y # CONFIG_DEFAULT_CFQ is not set # CONFIG_DEFAULT_NOOP is not set CONFIG_DEFAULT_IOSCHED="deadline" +CONFIG_PREEMPT_NOTIFIERS=y CONFIG_CLASSIC_RCU=y -# CONFIG_PREEMPT_RCU is not set # # Base setup @@ -131,6 +136,10 @@ CONFIG_CLASSIC_RCU=y # # Processor type and features # +CONFIG_TICK_ONESHOT=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_GENERIC_CLOCKEVENTS_BUILD=y CONFIG_64BIT=y CONFIG_SMP=y CONFIG_NR_CPUS=32 @@ -161,15 +170,20 @@ CONFIG_ARCH_POPULATES_NODE_MAP=y # CONFIG_PREEMPT_NONE is not set # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y -# CONFIG_RCU_TRACE is not set +# CONFIG_PREEMPT_RCU is not set +CONFIG_ARCH_SPARSEMEM_ENABLE=y +CONFIG_ARCH_SPARSEMEM_DEFAULT=y CONFIG_SELECT_MEMORY_MODEL=y -CONFIG_FLATMEM_MANUAL=y +# CONFIG_FLATMEM_MANUAL is not set # CONFIG_DISCONTIGMEM_MANUAL is not set -# CONFIG_SPARSEMEM_MANUAL is not set -CONFIG_FLATMEM=y -CONFIG_FLAT_NODE_MEM_MAP=y +CONFIG_SPARSEMEM_MANUAL=y +CONFIG_SPARSEMEM=y +CONFIG_HAVE_MEMORY_PRESENT=y # CONFIG_SPARSEMEM_STATIC is not set -# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set +CONFIG_SPARSEMEM_EXTREME=y +CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y +CONFIG_SPARSEMEM_VMEMMAP=y +CONFIG_PAGEFLAGS_EXTENDED=y CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_RESOURCES_64BIT=y CONFIG_ZONE_DMA_FLAG=1 @@ -205,11 +219,10 @@ CONFIG_HZ_100=y # CONFIG_HZ_1000 is not set CONFIG_HZ=100 # CONFIG_SCHED_HRTICK is not set -CONFIG_NO_IDLE_HZ=y -CONFIG_NO_IDLE_HZ_INIT=y CONFIG_S390_HYPFS_FS=y CONFIG_KEXEC=y # CONFIG_ZFCPDUMP is not set +CONFIG_S390_GUEST=y # # Networking @@ -272,8 +285,10 @@ CONFIG_INET6_XFRM_MODE_TUNNEL=y CONFIG_INET6_XFRM_MODE_BEET=y # CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set CONFIG_IPV6_SIT=y +CONFIG_IPV6_NDISC_NODETYPE=y # CONFIG_IPV6_TUNNEL is not set # CONFIG_IPV6_MULTIPLE_TABLES is not set +# CONFIG_IPV6_MROUTE is not set # CONFIG_NETWORK_SECMARK is not set CONFIG_NETFILTER=y # CONFIG_NETFILTER_DEBUG is not set @@ -289,6 +304,7 @@ CONFIG_NF_CONNTRACK=m # CONFIG_NF_CT_ACCT is not set # CONFIG_NF_CONNTRACK_MARK is not set # CONFIG_NF_CONNTRACK_EVENTS is not set +# CONFIG_NF_CT_PROTO_DCCP is not set # CONFIG_NF_CT_PROTO_SCTP is not set # CONFIG_NF_CT_PROTO_UDPLITE is not set # CONFIG_NF_CONNTRACK_AMANDA is not set @@ -439,6 +455,7 @@ CONFIG_DASD_ECKD=y CONFIG_DASD_FBA=y CONFIG_DASD_DIAG=y CONFIG_DASD_EER=y +CONFIG_VIRTIO_BLK=m CONFIG_MISC_DEVICES=y # CONFIG_EEPROM_93CX6 is not set # CONFIG_ENCLOSURE_SERVICES is not set @@ -533,7 +550,7 @@ CONFIG_NETDEV_10000=y # S/390 network device drivers # CONFIG_LCS=m -CONFIG_CTC=m +CONFIG_CTCM=m # CONFIG_NETIUCV is not set # CONFIG_SMSGIUCV is not set # CONFIG_CLAW is not set @@ -547,10 +564,12 @@ CONFIG_CCWGROUP=y # CONFIG_NETCONSOLE is not set # CONFIG_NETPOLL is not set # CONFIG_NET_POLL_CONTROLLER is not set +CONFIG_VIRTIO_NET=m # # Character devices # +CONFIG_DEVKMEM=y CONFIG_UNIX98_PTYS=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=256 @@ -600,6 +619,7 @@ CONFIG_S390_VMUR=m # Sonics Silicon Backplane # # CONFIG_MEMSTICK is not set +# CONFIG_NEW_LEDS is not set # # File systems @@ -652,6 +672,7 @@ CONFIG_PROC_SYSCTL=y CONFIG_SYSFS=y CONFIG_TMPFS=y CONFIG_TMPFS_POSIX_ACL=y +# CONFIG_HUGETLBFS is not set # CONFIG_HUGETLB_PAGE is not set CONFIG_CONFIGFS_FS=m @@ -678,12 +699,10 @@ CONFIG_NFS_FS=y CONFIG_NFS_V3=y # CONFIG_NFS_V3_ACL is not set # CONFIG_NFS_V4 is not set -# CONFIG_NFS_DIRECTIO is not set CONFIG_NFSD=y CONFIG_NFSD_V3=y # CONFIG_NFSD_V3_ACL is not set # CONFIG_NFSD_V4 is not set -CONFIG_NFSD_TCP=y CONFIG_LOCKD=y CONFIG_LOCKD_V4=y CONFIG_EXPORTFS=y @@ -731,6 +750,7 @@ CONFIG_TRACE_IRQFLAGS_SUPPORT=y # CONFIG_PRINTK_TIME is not set CONFIG_ENABLE_WARN_DEPRECATED=y CONFIG_ENABLE_MUST_CHECK=y +CONFIG_FRAME_WARN=2048 CONFIG_MAGIC_SYSRQ=y # CONFIG_UNUSED_SYMBOLS is not set CONFIG_DEBUG_FS=y @@ -754,6 +774,7 @@ CONFIG_DEBUG_SPINLOCK_SLEEP=y CONFIG_DEBUG_BUGVERBOSE=y # CONFIG_DEBUG_INFO is not set # CONFIG_DEBUG_VM is not set +# CONFIG_DEBUG_WRITECOUNT is not set # CONFIG_DEBUG_LIST is not set # CONFIG_DEBUG_SG is not set # CONFIG_FRAME_POINTER is not set @@ -775,58 +796,88 @@ CONFIG_SAMPLES=y # CONFIG_SECURITY is not set # CONFIG_SECURITY_FILE_CAPABILITIES is not set CONFIG_CRYPTO=y + +# +# Crypto core or helper +# CONFIG_CRYPTO_ALGAPI=y CONFIG_CRYPTO_AEAD=m CONFIG_CRYPTO_BLKCIPHER=y -CONFIG_CRYPTO_SEQIV=m CONFIG_CRYPTO_HASH=m CONFIG_CRYPTO_MANAGER=y +CONFIG_CRYPTO_GF128MUL=m +# CONFIG_CRYPTO_NULL is not set +# CONFIG_CRYPTO_CRYPTD is not set +CONFIG_CRYPTO_AUTHENC=m +# CONFIG_CRYPTO_TEST is not set + +# +# Authenticated Encryption with Associated Data +# +CONFIG_CRYPTO_CCM=m +CONFIG_CRYPTO_GCM=m +CONFIG_CRYPTO_SEQIV=m + +# +# Block modes +# +CONFIG_CRYPTO_CBC=y +CONFIG_CRYPTO_CTR=m +CONFIG_CRYPTO_CTS=m +CONFIG_CRYPTO_ECB=m +# CONFIG_CRYPTO_LRW is not set +CONFIG_CRYPTO_PCBC=m +# CONFIG_CRYPTO_XTS is not set + +# +# Hash modes +# CONFIG_CRYPTO_HMAC=m # CONFIG_CRYPTO_XCBC is not set -# CONFIG_CRYPTO_NULL is not set + +# +# Digest +# +# CONFIG_CRYPTO_CRC32C is not set # CONFIG_CRYPTO_MD4 is not set CONFIG_CRYPTO_MD5=m +# CONFIG_CRYPTO_MICHAEL_MIC is not set CONFIG_CRYPTO_SHA1=m # CONFIG_CRYPTO_SHA256 is not set # CONFIG_CRYPTO_SHA512 is not set -# CONFIG_CRYPTO_WP512 is not set # CONFIG_CRYPTO_TGR192 is not set -CONFIG_CRYPTO_GF128MUL=m -CONFIG_CRYPTO_ECB=m -CONFIG_CRYPTO_CBC=y -CONFIG_CRYPTO_PCBC=m -# CONFIG_CRYPTO_LRW is not set -# CONFIG_CRYPTO_XTS is not set -CONFIG_CRYPTO_CTR=m -CONFIG_CRYPTO_GCM=m -CONFIG_CRYPTO_CCM=m -# CONFIG_CRYPTO_CRYPTD is not set -# CONFIG_CRYPTO_DES is not set -CONFIG_CRYPTO_FCRYPT=m -# CONFIG_CRYPTO_BLOWFISH is not set -# CONFIG_CRYPTO_TWOFISH is not set -# CONFIG_CRYPTO_SERPENT is not set +# CONFIG_CRYPTO_WP512 is not set + +# +# Ciphers +# # CONFIG_CRYPTO_AES is not set +# CONFIG_CRYPTO_ANUBIS is not set +# CONFIG_CRYPTO_ARC4 is not set +# CONFIG_CRYPTO_BLOWFISH is not set +CONFIG_CRYPTO_CAMELLIA=m # CONFIG_CRYPTO_CAST5 is not set # CONFIG_CRYPTO_CAST6 is not set -# CONFIG_CRYPTO_TEA is not set -# CONFIG_CRYPTO_ARC4 is not set +# CONFIG_CRYPTO_DES is not set +CONFIG_CRYPTO_FCRYPT=m # CONFIG_CRYPTO_KHAZAD is not set -# CONFIG_CRYPTO_ANUBIS is not set -CONFIG_CRYPTO_SEED=m CONFIG_CRYPTO_SALSA20=m +CONFIG_CRYPTO_SEED=m +# CONFIG_CRYPTO_SERPENT is not set +# CONFIG_CRYPTO_TEA is not set +# CONFIG_CRYPTO_TWOFISH is not set + +# +# Compression +# # CONFIG_CRYPTO_DEFLATE is not set -# CONFIG_CRYPTO_MICHAEL_MIC is not set -# CONFIG_CRYPTO_CRC32C is not set -CONFIG_CRYPTO_CAMELLIA=m -# CONFIG_CRYPTO_TEST is not set -CONFIG_CRYPTO_AUTHENC=m CONFIG_CRYPTO_LZO=m CONFIG_CRYPTO_HW=y CONFIG_ZCRYPT=m # CONFIG_ZCRYPT_MONOLITHIC is not set # CONFIG_CRYPTO_SHA1_S390 is not set # CONFIG_CRYPTO_SHA256_S390 is not set +CONFIG_CRYPTO_SHA512_S390=m # CONFIG_CRYPTO_DES_S390 is not set # CONFIG_CRYPTO_AES_S390 is not set CONFIG_S390_PRNG=m @@ -835,6 +886,8 @@ CONFIG_S390_PRNG=m # Library routines # CONFIG_BITREVERSE=m +# CONFIG_GENERIC_FIND_FIRST_BIT is not set +# CONFIG_GENERIC_FIND_NEXT_BIT is not set # CONFIG_CRC_CCITT is not set # CONFIG_CRC16 is not set # CONFIG_CRC_ITU_T is not set @@ -844,3 +897,9 @@ CONFIG_LIBCRC32C=m CONFIG_LZO_COMPRESS=m CONFIG_LZO_DECOMPRESS=m CONFIG_PLIST=y +CONFIG_HAVE_KVM=y +CONFIG_VIRTUALIZATION=y +CONFIG_KVM=m +CONFIG_VIRTIO=y +CONFIG_VIRTIO_RING=y +CONFIG_VIRTIO_BALLOON=m diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 77051cd..6302f50 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -2,8 +2,6 @@ # Makefile for the linux kernel. # -EXTRA_AFLAGS := -traditional - # # Passing null pointers is ok for smp code, since we access the lowcore here. # diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 68ec408..d0e0968 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -139,15 +139,15 @@ static noinline __init void detect_machine_type(void) /* Running under z/VM ? */ if (cpuinfo->cpu_id.version == 0xff) - machine_flags |= 1; + machine_flags |= MACHINE_FLAG_VM; /* Running on a P/390 ? */ if (cpuinfo->cpu_id.machine == 0x7490) - machine_flags |= 4; + machine_flags |= MACHINE_FLAG_P390; /* Running under KVM ? */ if (cpuinfo->cpu_id.version == 0xfe) - machine_flags |= 64; + machine_flags |= MACHINE_FLAG_KVM; } #ifdef CONFIG_64BIT @@ -268,6 +268,118 @@ static noinline __init void setup_lowcore_early(void) s390_base_pgm_handler_fn = early_pgm_check_handler; } +static noinline __init void setup_hpage(void) +{ +#ifndef CONFIG_DEBUG_PAGEALLOC + unsigned int facilities; + + facilities = stfl(); + if (!(facilities & (1UL << 23)) || !(facilities & (1UL << 29))) + return; + machine_flags |= MACHINE_FLAG_HPAGE; + __ctl_set_bit(0, 23); +#endif +} + +static __init void detect_mvpg(void) +{ +#ifndef CONFIG_64BIT + int rc; + + asm volatile( + " la 0,0\n" + " mvpg %2,%2\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc) : "0" (-EOPNOTSUPP), "a" (0) : "memory", "cc", "0"); + if (!rc) + machine_flags |= MACHINE_FLAG_MVPG; +#endif +} + +static __init void detect_ieee(void) +{ +#ifndef CONFIG_64BIT + int rc, tmp; + + asm volatile( + " efpc %1,0\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc), "=d" (tmp): "0" (-EOPNOTSUPP) : "cc"); + if (!rc) + machine_flags |= MACHINE_FLAG_IEEE; +#endif +} + +static __init void detect_csp(void) +{ +#ifndef CONFIG_64BIT + int rc; + + asm volatile( + " la 0,0\n" + " la 1,0\n" + " la 2,4\n" + " csp 0,2\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc) : "0" (-EOPNOTSUPP) : "cc", "0", "1", "2"); + if (!rc) + machine_flags |= MACHINE_FLAG_CSP; +#endif +} + +static __init void detect_diag9c(void) +{ + unsigned int cpu_address; + int rc; + + cpu_address = stap(); + asm volatile( + " diag %2,0,0x9c\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc) : "0" (-EOPNOTSUPP), "d" (cpu_address) : "cc"); + if (!rc) + machine_flags |= MACHINE_FLAG_DIAG9C; +} + +static __init void detect_diag44(void) +{ +#ifdef CONFIG_64BIT + int rc; + + asm volatile( + " diag 0,0,0x44\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "=d" (rc) : "0" (-EOPNOTSUPP) : "cc"); + if (!rc) + machine_flags |= MACHINE_FLAG_DIAG44; +#endif +} + +static __init void detect_machine_facilities(void) +{ +#ifdef CONFIG_64BIT + unsigned int facilities; + + facilities = stfl(); + if (facilities & (1 << 28)) + machine_flags |= MACHINE_FLAG_IDTE; + if (facilities & (1 << 23)) + machine_flags |= MACHINE_FLAG_PFMF; + if (facilities & (1 << 4)) + machine_flags |= MACHINE_FLAG_MVCOS; +#endif +} + /* * Save ipl parameters, clear bss memory, initialize storage keys * and create a kernel NSS at startup if the SAVESYS= parm is defined @@ -285,6 +397,13 @@ void __init startup_init(void) create_kernel_nss(); sort_main_extable(); setup_lowcore_early(); + detect_mvpg(); + detect_ieee(); + detect_csp(); + detect_diag9c(); + detect_diag44(); + detect_machine_facilities(); + setup_hpage(); sclp_read_info_early(); sclp_facilities_detect(); memsize = sclp_memory_detect(); diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S index dc364c1..a816e2d 100644 --- a/arch/s390/kernel/head31.S +++ b/arch/s390/kernel/head31.S @@ -57,61 +57,6 @@ startup_continue: # l %r14,.Lstartup_init-.LPG1(%r13) basr %r14,%r14 - - l %r12,.Lmflags-.LPG1(%r13) # get address of machine_flags -# -# find out if we have an IEEE fpu -# - mvc __LC_PGM_NEW_PSW(8),.Lpcfpu-.LPG1(%r13) - efpc %r0,0 # test IEEE extract fpc instruction - oi 3(%r12),2 # set IEEE fpu flag -.Lchkfpu: - -# -# find out if we have the CSP instruction -# - mvc __LC_PGM_NEW_PSW(8),.Lpccsp-.LPG1(%r13) - la %r0,0 - lr %r1,%r0 - la %r2,4 - csp %r0,%r2 # Test CSP instruction - oi 3(%r12),8 # set CSP flag -.Lchkcsp: - -# -# find out if we have the MVPG instruction -# - mvc __LC_PGM_NEW_PSW(8),.Lpcmvpg-.LPG1(%r13) - sr %r0,%r0 - la %r1,0 - la %r2,0 - mvpg %r1,%r2 # Test CSP instruction - oi 3(%r12),16 # set MVPG flag -.Lchkmvpg: - -# -# find out if we have the IDTE instruction -# - mvc __LC_PGM_NEW_PSW(8),.Lpcidte-.LPG1(%r13) - .long 0xb2b10000 # store facility list - tm 0xc8,0x08 # check bit for clearing-by-ASCE - bno .Lchkidte-.LPG1(%r13) - lhi %r1,2094 - lhi %r2,0 - .long 0xb98e2001 - oi 3(%r12),0x80 # set IDTE flag -.Lchkidte: - -# -# find out if the diag 0x9c is available -# - mvc __LC_PGM_NEW_PSW(8),.Lpcdiag9c-.LPG1(%r13) - stap __LC_CPUID+4 # store cpu address - lh %r1,__LC_CPUID+4 - diag %r1,0,0x9c # test diag 0x9c - oi 2(%r12),1 # set diag9c flag -.Lchkdiag9c: - lpsw .Lentry-.LPG1(13) # jump to _stext in primary-space, # virtual and never return ... .align 8 @@ -132,13 +77,7 @@ startup_continue: .long 0 # cr13: home space segment table .long 0xc0000000 # cr14: machine check handling off .long 0 # cr15: linkage stack operations -.Lpcfpu:.long 0x00080000,0x80000000 + .Lchkfpu -.Lpccsp:.long 0x00080000,0x80000000 + .Lchkcsp -.Lpcmvpg:.long 0x00080000,0x80000000 + .Lchkmvpg -.Lpcidte:.long 0x00080000,0x80000000 + .Lchkidte -.Lpcdiag9c:.long 0x00080000,0x80000000 + .Lchkdiag9c .Lmchunk:.long memory_chunk -.Lmflags:.long machine_flags .Lbss_bgn: .long __bss_start .Lbss_end: .long _end .Lparmaddr: .long PARMAREA diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 79dccd2..1d06961 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -125,73 +125,11 @@ startup_continue: # and create a kernel NSS if the SAVESYS= parm is defined # brasl %r14,startup_init - # set program check new psw mask - mvc __LC_PGM_NEW_PSW(8),.Lpcmsk-.LPG1(%r13) - larl %r12,machine_flags -# -# find out if we have the MVPG instruction -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - sgr %r0,%r0 - lghi %r1,0 - lghi %r2,0 - mvpg %r1,%r2 # test MVPG instruction - oi 7(%r12),16 # set MVPG flag -0: - -# -# find out if the diag 0x44 works in 64 bit mode -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - diag 0,0,0x44 # test diag 0x44 - oi 7(%r12),32 # set diag44 flag -0: - -# -# find out if we have the IDTE instruction -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - .long 0xb2b10000 # store facility list - tm 0xc8,0x08 # check bit for clearing-by-ASCE - bno 0f-.LPG1(%r13) - lhi %r1,2048 - lhi %r2,0 - .long 0xb98e2001 - oi 7(%r12),0x80 # set IDTE flag -0: - -# -# find out if the diag 0x9c is available -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - stap __LC_CPUID+4 # store cpu address - lh %r1,__LC_CPUID+4 - diag %r1,0,0x9c # test diag 0x9c - oi 6(%r12),1 # set diag9c flag -0: - -# -# find out if we have the MVCOS instruction -# - la %r1,0f-.LPG1(%r13) # set program check address - stg %r1,__LC_PGM_NEW_PSW+8 - .short 0xc800 # mvcos 0(%r0),0(%r0),%r0 - .short 0x0000 - .short 0x0000 -0: tm 0x8f,0x13 # special-operation exception? - bno 1f-.LPG1(%r13) # if yes, MVCOS is present - oi 6(%r12),2 # set MVCOS flag -1: - lpswe .Lentry-.LPG1(13) # jump to _stext in primary-space, # virtual and never return ... .align 16 .Lentry:.quad 0x0000000180000000,_stext -.Lctl: .quad 0x04b50002 # cr0: various things +.Lctl: .quad 0x04350002 # cr0: various things .quad 0 # cr1: primary space segment table .quad .Lduct # cr2: dispatchable unit control table .quad 0 # cr3: instruction authorization diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index c1aff19..7920861 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -180,24 +180,6 @@ void cpu_idle(void) } } -void show_regs(struct pt_regs *regs) -{ - print_modules(); - printk("CPU: %d %s %s %.*s\n", - task_thread_info(current)->cpu, print_tainted(), - init_utsname()->release, - (int)strcspn(init_utsname()->version, " "), - init_utsname()->version); - printk("Process %s (pid: %d, task: %p, ksp: %p)\n", - current->comm, current->pid, current, - (void *) current->thread.ksp); - show_registers(regs); - /* Show stack backtrace if pt_regs is from kernel mode */ - if (!(regs->psw.mask & PSW_MASK_PSTATE)) - show_trace(NULL, (unsigned long *) regs->gprs[15]); - show_last_breaking_event(regs); -} - extern void kernel_thread_starter(void); asm( diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 58a0642..7f42701 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -607,38 +607,8 @@ do_ptrace_emu31(struct task_struct *child, long request, long addr, long data) } #endif -#define PT32_IEEE_IP 0x13c - -static int -do_ptrace(struct task_struct *child, long request, long addr, long data) +long arch_ptrace(struct task_struct *child, long request, long addr, long data) { - int ret; - - if (request == PTRACE_ATTACH) - return ptrace_attach(child); - - /* - * Special cases to get/store the ieee instructions pointer. - */ - if (child == current) { - if (request == PTRACE_PEEKUSR && addr == PT_IEEE_IP) - return peek_user(child, addr, data); - if (request == PTRACE_POKEUSR && addr == PT_IEEE_IP) - return poke_user(child, addr, data); -#ifdef CONFIG_COMPAT - if (request == PTRACE_PEEKUSR && - addr == PT32_IEEE_IP && test_thread_flag(TIF_31BIT)) - return peek_user_emu31(child, addr, data); - if (request == PTRACE_POKEUSR && - addr == PT32_IEEE_IP && test_thread_flag(TIF_31BIT)) - return poke_user_emu31(child, addr, data); -#endif - } - - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret < 0) - return ret; - switch (request) { case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ @@ -693,31 +663,6 @@ do_ptrace(struct task_struct *child, long request, long addr, long data) return -EIO; } -asmlinkage long -sys_ptrace(long request, long pid, long addr, long data) -{ - struct task_struct *child; - int ret; - - lock_kernel(); - if (request == PTRACE_TRACEME) { - ret = ptrace_traceme(); - goto out; - } - - child = ptrace_get_task_struct(pid); - if (IS_ERR(child)) { - ret = PTR_ERR(child); - goto out; - } - - ret = do_ptrace(child, request, addr, data); - put_task_struct(child); -out: - unlock_kernel(); - return ret; -} - asmlinkage void syscall_trace(struct pt_regs *regs, int entryexit) { diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index a9d18aa..2bc70b6 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -73,7 +73,7 @@ EXPORT_SYMBOL(uaccess); unsigned int console_mode = 0; unsigned int console_devno = -1; unsigned int console_irq = -1; -unsigned long machine_flags = 0; +unsigned long machine_flags; unsigned long elf_hwcap = 0; char elf_platform[ELF_PLATFORM_SIZE]; @@ -683,15 +683,6 @@ setup_memory(void) #endif } -static __init unsigned int stfl(void) -{ - asm volatile( - " .insn s,0xb2b10000,0(0)\n" /* stfl */ - "0:\n" - EX_TABLE(0b,0b)); - return S390_lowcore.stfl_fac_list; -} - static int __init __stfle(unsigned long long *list, int doublewords) { typedef struct { unsigned long long _[doublewords]; } addrtype; @@ -758,6 +749,9 @@ static void __init setup_hwcaps(void) elf_hwcap |= 1UL << 6; } + if (MACHINE_HAS_HPAGE) + elf_hwcap |= 1UL << 7; + switch (cpuinfo->cpu_id.machine) { case 0x9672: #if !defined(CONFIG_64BIT) @@ -881,8 +875,9 @@ void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo) static int show_cpuinfo(struct seq_file *m, void *v) { - static const char *hwcap_str[7] = { - "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp" + static const char *hwcap_str[8] = { + "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp", + "edat" }; struct cpuinfo_S390 *cpuinfo; unsigned long n = (unsigned long) v - 1; @@ -897,7 +892,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) num_online_cpus(), loops_per_jiffy/(500000/HZ), (loops_per_jiffy/(5000/HZ))%100); seq_puts(m, "features\t: "); - for (i = 0; i < 7; i++) + for (i = 0; i < 8; i++) if (hwcap_str[i] && (elf_hwcap & (1UL << i))) seq_printf(m, "%s ", hwcap_str[i]); seq_puts(m, "\n"); diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 0dfa988..0aeb290 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -505,7 +505,7 @@ out: return rc; } -static int smp_rescan_cpus(void) +static int __smp_rescan_cpus(void) { cpumask_t avail; @@ -570,7 +570,7 @@ out: kfree(info); printk(KERN_INFO "CPUs: %d configured, %d standby\n", c_cpus, s_cpus); get_online_cpus(); - smp_rescan_cpus(); + __smp_rescan_cpus(); put_online_cpus(); } @@ -890,8 +890,8 @@ static ssize_t cpu_configure_store(struct sys_device *dev, const char *buf, if (val != 0 && val != 1) return -EINVAL; - mutex_lock(&smp_cpu_state_mutex); get_online_cpus(); + mutex_lock(&smp_cpu_state_mutex); rc = -EBUSY; if (cpu_online(cpu)) goto out; @@ -919,8 +919,8 @@ static ssize_t cpu_configure_store(struct sys_device *dev, const char *buf, break; } out: - put_online_cpus(); mutex_unlock(&smp_cpu_state_mutex); + put_online_cpus(); return rc ? rc : count; } static SYSDEV_ATTR(configure, 0644, cpu_configure_show, cpu_configure_store); @@ -1088,17 +1088,17 @@ out: } #ifdef CONFIG_HOTPLUG_CPU -static ssize_t __ref rescan_store(struct sys_device *dev, - const char *buf, size_t count) + +int smp_rescan_cpus(void) { cpumask_t newcpus; int cpu; int rc; - mutex_lock(&smp_cpu_state_mutex); get_online_cpus(); + mutex_lock(&smp_cpu_state_mutex); newcpus = cpu_present_map; - rc = smp_rescan_cpus(); + rc = __smp_rescan_cpus(); if (rc) goto out; cpus_andnot(newcpus, cpu_present_map, newcpus); @@ -1109,10 +1109,19 @@ static ssize_t __ref rescan_store(struct sys_device *dev, } rc = 0; out: - put_online_cpus(); mutex_unlock(&smp_cpu_state_mutex); + put_online_cpus(); if (!cpus_empty(newcpus)) topology_schedule_update(); + return rc; +} + +static ssize_t __ref rescan_store(struct sys_device *dev, const char *buf, + size_t count) +{ + int rc; + + rc = smp_rescan_cpus(); return rc ? rc : count; } static SYSDEV_ATTR(rescan, 0200, NULL, rescan_store); @@ -1139,16 +1148,16 @@ static ssize_t dispatching_store(struct sys_device *dev, const char *buf, if (val != 0 && val != 1) return -EINVAL; rc = 0; - mutex_lock(&smp_cpu_state_mutex); get_online_cpus(); + mutex_lock(&smp_cpu_state_mutex); if (cpu_management == val) goto out; rc = topology_set_cpu_management(val); if (!rc) cpu_management = val; out: - put_online_cpus(); mutex_unlock(&smp_cpu_state_mutex); + put_online_cpus(); return rc ? rc : count; } static SYSDEV_ATTR(dispatching, 0644, dispatching_show, dispatching_store); diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 12b39b3..661a072 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -9,6 +9,7 @@ #include <linux/device.h> #include <linux/bootmem.h> #include <linux/sched.h> +#include <linux/kthread.h> #include <linux/workqueue.h> #include <linux/cpu.h> #include <linux/smp.h> @@ -66,6 +67,8 @@ static struct timer_list topology_timer; static void set_topology_timer(void); static DECLARE_WORK(topology_work, topology_work_fn); +cpumask_t cpu_core_map[NR_CPUS]; + cpumask_t cpu_coregroup_map(unsigned int cpu) { struct core_info *core = &core_info; @@ -199,6 +202,14 @@ int topology_set_cpu_management(int fc) return rc; } +static void update_cpu_core_map(void) +{ + int cpu; + + for_each_present_cpu(cpu) + cpu_core_map[cpu] = cpu_coregroup_map(cpu); +} + void arch_update_cpu_topology(void) { struct tl_info *info = tl_info; @@ -206,20 +217,33 @@ void arch_update_cpu_topology(void) int cpu; if (!machine_has_topology) { + update_cpu_core_map(); topology_update_polarization_simple(); return; } stsi(info, 15, 1, 2); tl_to_cores(info); + update_cpu_core_map(); for_each_online_cpu(cpu) { sysdev = get_cpu_sysdev(cpu); kobject_uevent(&sysdev->kobj, KOBJ_CHANGE); } } -static void topology_work_fn(struct work_struct *work) +static int topology_kthread(void *data) { arch_reinit_sched_domains(); + return 0; +} + +static void topology_work_fn(struct work_struct *work) +{ + /* We can't call arch_reinit_sched_domains() from a multi-threaded + * workqueue context since it may deadlock in case of cpu hotplug. + * So we have to create a kernel thread in order to call + * arch_reinit_sched_domains(). + */ + kthread_run(topology_kthread, NULL, "topology_update"); } void topology_schedule_update(void) @@ -251,20 +275,23 @@ static int __init init_topology_update(void) { int rc; + rc = 0; if (!machine_has_topology) { topology_update_polarization_simple(); - return 0; + goto out; } init_timer_deferrable(&topology_timer); if (machine_has_topology_irq) { rc = register_external_interrupt(0x2005, topology_interrupt); if (rc) - return rc; + goto out; ctl_set_bit(0, 8); } else set_topology_timer(); - return 0; +out: + update_cpu_core_map(); + return rc; } __initcall(init_topology_update); diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index 57b607b..4584d81 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -113,7 +113,7 @@ __show_trace(unsigned long sp, unsigned long low, unsigned long high) } } -void show_trace(struct task_struct *task, unsigned long *stack) +static void show_trace(struct task_struct *task, unsigned long *stack) { register unsigned long __r15 asm ("15"); unsigned long sp; @@ -161,14 +161,14 @@ void show_stack(struct task_struct *task, unsigned long *sp) show_trace(task, sp); } -#ifdef CONFIG_64BIT -void show_last_breaking_event(struct pt_regs *regs) +static void show_last_breaking_event(struct pt_regs *regs) { +#ifdef CONFIG_64BIT printk("Last Breaking-Event-Address:\n"); printk(" [<%016lx>] ", regs->args[0] & PSW_ADDR_INSN); print_symbol("%s\n", regs->args[0] & PSW_ADDR_INSN); -} #endif +} /* * The architecture-independent dump_stack generator @@ -223,6 +223,24 @@ void show_registers(struct pt_regs *regs) show_code(regs); } +void show_regs(struct pt_regs *regs) +{ + print_modules(); + printk("CPU: %d %s %s %.*s\n", + task_thread_info(current)->cpu, print_tainted(), + init_utsname()->release, + (int)strcspn(init_utsname()->version, " "), + init_utsname()->version); + printk("Process %s (pid: %d, task: %p, ksp: %p)\n", + current->comm, current->pid, current, + (void *) current->thread.ksp); + show_registers(regs); + /* Show stack backtrace if pt_regs is from kernel mode */ + if (!(regs->psw.mask & PSW_MASK_PSTATE)) + show_trace(NULL, (unsigned long *) regs->gprs[15]); + show_last_breaking_event(regs); +} + /* This is called from fs/proc/array.c */ void task_show_regs(struct seq_file *m, struct task_struct *task) { diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 1465946..c02286c 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -151,18 +151,9 @@ static int handle_chsc(struct kvm_vcpu *vcpu) return 0; } -static unsigned int kvm_stfl(void) -{ - asm volatile( - " .insn s,0xb2b10000,0(0)\n" /* stfl */ - "0:\n" - EX_TABLE(0b, 0b)); - return S390_lowcore.stfl_fac_list; -} - static int handle_stfl(struct kvm_vcpu *vcpu) { - unsigned int facility_list = kvm_stfl(); + unsigned int facility_list = stfl(); int rc; vcpu->stat.instruction_stfl++; diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile index 5208443..ab6735d 100644 --- a/arch/s390/lib/Makefile +++ b/arch/s390/lib/Makefile @@ -2,8 +2,6 @@ # Makefile for s390-specific library files.. # -EXTRA_AFLAGS := -traditional - lib-y += delay.o string.o uaccess_std.o uaccess_pt.o obj-$(CONFIG_32BIT) += div64.o qrnnd.o lib-$(CONFIG_64BIT) += uaccess_mvcos.o diff --git a/arch/s390/lib/uaccess_mvcos.c b/arch/s390/lib/uaccess_mvcos.c index 6d87723..3f15aaf 100644 --- a/arch/s390/lib/uaccess_mvcos.c +++ b/arch/s390/lib/uaccess_mvcos.c @@ -162,6 +162,7 @@ static size_t clear_user_mvcos(size_t size, void __user *to) return size; } +#ifdef CONFIG_S390_SWITCH_AMODE static size_t strnlen_user_mvcos(size_t count, const char __user *src) { char buf[256]; @@ -199,6 +200,7 @@ static size_t strncpy_from_user_mvcos(size_t count, const char __user *src, } while ((len_str == len) && (done < count)); return done; } +#endif /* CONFIG_S390_SWITCH_AMODE */ struct uaccess_ops uaccess_mvcos = { .copy_from_user = copy_from_user_mvcos_check, diff --git a/arch/s390/math-emu/Makefile b/arch/s390/math-emu/Makefile index 73b3e72..c848903 100644 --- a/arch/s390/math-emu/Makefile +++ b/arch/s390/math-emu/Makefile @@ -5,4 +5,3 @@ obj-$(CONFIG_MATHEMU) := math.o EXTRA_CFLAGS := -I$(src) -Iinclude/math-emu -w -EXTRA_AFLAGS := -traditional diff --git a/arch/s390/mm/Makefile b/arch/s390/mm/Makefile index 6640193..fb988a4 100644 --- a/arch/s390/mm/Makefile +++ b/arch/s390/mm/Makefile @@ -4,4 +4,4 @@ obj-y := init.o fault.o extmem.o mmap.o vmem.o pgtable.o obj-$(CONFIG_CMM) += cmm.o - +obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c index ed2af0a..f231f5e 100644 --- a/arch/s390/mm/extmem.c +++ b/arch/s390/mm/extmem.c @@ -287,7 +287,7 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long if (rc < 0) goto out_free; - rc = add_shared_memory(seg->start_addr, seg->end - seg->start_addr + 1); + rc = vmem_add_mapping(seg->start_addr, seg->end - seg->start_addr + 1); if (rc) goto out_free; @@ -351,7 +351,7 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long release_resource(seg->res); kfree(seg->res); out_shared: - remove_shared_memory(seg->start_addr, seg->end - seg->start_addr + 1); + vmem_remove_mapping(seg->start_addr, seg->end - seg->start_addr + 1); out_free: kfree(seg); out: @@ -474,7 +474,7 @@ segment_modify_shared (char *name, int do_nonshared) rc = 0; goto out_unlock; out_del: - remove_shared_memory(seg->start_addr, seg->end - seg->start_addr + 1); + vmem_remove_mapping(seg->start_addr, seg->end - seg->start_addr + 1); list_del(&seg->list); dcss_diag(DCSS_PURGESEG, seg->dcss_name, &dummy, &dummy); kfree(seg); @@ -508,7 +508,7 @@ segment_unload(char *name) goto out_unlock; release_resource(seg->res); kfree(seg->res); - remove_shared_memory(seg->start_addr, seg->end - seg->start_addr + 1); + vmem_remove_mapping(seg->start_addr, seg->end - seg->start_addr + 1); list_del(&seg->list); dcss_diag(DCSS_PURGESEG, seg->dcss_name, &dummy, &dummy); kfree(seg); diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 2650f46..4d53720 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -28,6 +28,7 @@ #include <linux/hardirq.h> #include <linux/kprobes.h> #include <linux/uaccess.h> +#include <linux/hugetlb.h> #include <asm/system.h> #include <asm/pgtable.h> #include <asm/s390_ext.h> @@ -367,6 +368,8 @@ good_area: } survive: + if (is_vm_hugetlb_page(vma)) + address &= HPAGE_MASK; /* * If for any reason at all we couldn't handle the fault, * make sure we exit gracefully rather than endlessly redo diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c new file mode 100644 index 0000000..f4b6124 --- /dev/null +++ b/arch/s390/mm/hugetlbpage.c @@ -0,0 +1,134 @@ +/* + * IBM System z Huge TLB Page Support for Kernel. + * + * Copyright 2007 IBM Corp. + * Author(s): Gerald Schaefer <gerald.schaefer@de.ibm.com> + */ + +#include <linux/mm.h> +#include <linux/hugetlb.h> + + +void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *pteptr, pte_t pteval) +{ + pmd_t *pmdp = (pmd_t *) pteptr; + pte_t shadow_pteval = pteval; + unsigned long mask; + + if (!MACHINE_HAS_HPAGE) { + pteptr = (pte_t *) pte_page(pteval)[1].index; + mask = pte_val(pteval) & + (_SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO); + pte_val(pteval) = (_SEGMENT_ENTRY + __pa(pteptr)) | mask; + if (mm->context.noexec) { + pteptr += PTRS_PER_PTE; + pte_val(shadow_pteval) = + (_SEGMENT_ENTRY + __pa(pteptr)) | mask; + } + } + + pmd_val(*pmdp) = pte_val(pteval); + if (mm->context.noexec) { + pmdp = get_shadow_table(pmdp); + pmd_val(*pmdp) = pte_val(shadow_pteval); + } +} + +int arch_prepare_hugepage(struct page *page) +{ + unsigned long addr = page_to_phys(page); + pte_t pte; + pte_t *ptep; + int i; + + if (MACHINE_HAS_HPAGE) + return 0; + + ptep = (pte_t *) pte_alloc_one(&init_mm, address); + if (!ptep) + return -ENOMEM; + + pte = mk_pte(page, PAGE_RW); + for (i = 0; i < PTRS_PER_PTE; i++) { + set_pte_at(&init_mm, addr + i * PAGE_SIZE, ptep + i, pte); + pte_val(pte) += PAGE_SIZE; + } + page[1].index = (unsigned long) ptep; + return 0; +} + +void arch_release_hugepage(struct page *page) +{ + pte_t *ptep; + + if (MACHINE_HAS_HPAGE) + return; + + ptep = (pte_t *) page[1].index; + if (!ptep) + return; + pte_free(&init_mm, ptep); + page[1].index = 0; +} + +pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) +{ + pgd_t *pgdp; + pud_t *pudp; + pmd_t *pmdp = NULL; + + pgdp = pgd_offset(mm, addr); + pudp = pud_alloc(mm, pgdp, addr); + if (pudp) + pmdp = pmd_alloc(mm, pudp, addr); + return (pte_t *) pmdp; +} + +pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) +{ + pgd_t *pgdp; + pud_t *pudp; + pmd_t *pmdp = NULL; + + pgdp = pgd_offset(mm, addr); + if (pgd_present(*pgdp)) { + pudp = pud_offset(pgdp, addr); + if (pud_present(*pudp)) + pmdp = pmd_offset(pudp, addr); + } + return (pte_t *) pmdp; +} + +int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep) +{ + return 0; +} + +struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address, + int write) +{ + return ERR_PTR(-EINVAL); +} + +int pmd_huge(pmd_t pmd) +{ + if (!MACHINE_HAS_HPAGE) + return 0; + + return !!(pmd_val(pmd) & _SEGMENT_ENTRY_LARGE); +} + +struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address, + pmd_t *pmdp, int write) +{ + struct page *page; + + if (!MACHINE_HAS_HPAGE) + return NULL; + + page = pmd_page(*pmdp); + if (page) + page += ((address & ~HPAGE_MASK) >> PAGE_SHIFT); + return page; +} diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 202c952..fa31de6 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -77,28 +77,6 @@ void show_mem(void) printk("%lu pages pagetables\n", global_page_state(NR_PAGETABLE)); } -static void __init setup_ro_region(void) -{ - pgd_t *pgd; - pud_t *pud; - pmd_t *pmd; - pte_t *pte; - pte_t new_pte; - unsigned long address, end; - - address = ((unsigned long)&_stext) & PAGE_MASK; - end = PFN_ALIGN((unsigned long)&_eshared); - - for (; address < end; address += PAGE_SIZE) { - pgd = pgd_offset_k(address); - pud = pud_offset(pgd, address); - pmd = pmd_offset(pud, address); - pte = pte_offset_kernel(pmd, address); - new_pte = mk_pte_phys(address, __pgprot(_PAGE_RO)); - *pte = new_pte; - } -} - /* * paging_init() sets up the page tables */ @@ -121,7 +99,6 @@ void __init paging_init(void) clear_table((unsigned long *) init_mm.pgd, pgd_type, sizeof(unsigned long)*2048); vmem_map_init(); - setup_ro_region(); /* enable virtual mapping in kernel mode */ __ctl_load(S390_lowcore.kernel_asce, 1, 1); @@ -129,6 +106,8 @@ void __init paging_init(void) __ctl_load(S390_lowcore.kernel_asce, 13, 13); __raw_local_irq_ssm(ssm_mask); + sparse_memory_present_with_active_regions(MAX_NUMNODES); + sparse_init(); memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); #ifdef CONFIG_ZONE_DMA max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS); diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index 35d90a4..beccacf 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -10,10 +10,12 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/list.h> +#include <linux/hugetlb.h> #include <asm/pgalloc.h> #include <asm/pgtable.h> #include <asm/setup.h> #include <asm/tlbflush.h> +#include <asm/sections.h> static DEFINE_MUTEX(vmem_mutex); @@ -25,43 +27,6 @@ struct memory_segment { static LIST_HEAD(mem_segs); -void __meminit memmap_init(unsigned long size, int nid, unsigned long zone, - unsigned long start_pfn) -{ - struct page *start, *end; - struct page *map_start, *map_end; - int i; - - start = pfn_to_page(start_pfn); - end = start + size; - - for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) { - unsigned long cstart, cend; - - cstart = PFN_DOWN(memory_chunk[i].addr); - cend = cstart + PFN_DOWN(memory_chunk[i].size); - - map_start = mem_map + cstart; - map_end = mem_map + cend; - - if (map_start < start) - map_start = start; - if (map_end > end) - map_end = end; - - map_start -= ((unsigned long) map_start & (PAGE_SIZE - 1)) - / sizeof(struct page); - map_end += ((PFN_ALIGN((unsigned long) map_end) - - (unsigned long) map_end) - / sizeof(struct page)); - - if (map_start < map_end) - memmap_init_zone((unsigned long)(map_end - map_start), - nid, zone, page_to_pfn(map_start), - MEMMAP_EARLY); - } -} - static void __ref *vmem_alloc_pages(unsigned int order) { if (slab_is_available()) @@ -77,8 +42,7 @@ static inline pud_t *vmem_pud_alloc(void) pud = vmem_alloc_pages(2); if (!pud) return NULL; - pud_val(*pud) = _REGION3_ENTRY_EMPTY; - memcpy(pud + 1, pud, (PTRS_PER_PUD - 1)*sizeof(pud_t)); + clear_table((unsigned long *) pud, _REGION3_ENTRY_EMPTY, PAGE_SIZE * 4); #endif return pud; } @@ -91,7 +55,7 @@ static inline pmd_t *vmem_pmd_alloc(void) pmd = vmem_alloc_pages(2); if (!pmd) return NULL; - clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE*4); + clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE * 4); #endif return pmd; } @@ -114,7 +78,7 @@ static pte_t __init_refok *vmem_pte_alloc(void) /* * Add a physical memory range to the 1:1 mapping. */ -static int vmem_add_range(unsigned long start, unsigned long size) +static int vmem_add_mem(unsigned long start, unsigned long size, int ro) { unsigned long address; pgd_t *pg_dir; @@ -141,7 +105,19 @@ static int vmem_add_range(unsigned long start, unsigned long size) pud_populate_kernel(&init_mm, pu_dir, pm_dir); } + pte = mk_pte_phys(address, __pgprot(ro ? _PAGE_RO : 0)); pm_dir = pmd_offset(pu_dir, address); + +#ifdef __s390x__ + if (MACHINE_HAS_HPAGE && !(address & ~HPAGE_MASK) && + (address + HPAGE_SIZE <= start + size) && + (address >= HPAGE_SIZE)) { + pte_val(pte) |= _SEGMENT_ENTRY_LARGE; + pmd_val(*pm_dir) = pte_val(pte); + address += HPAGE_SIZE - PAGE_SIZE; + continue; + } +#endif if (pmd_none(*pm_dir)) { pt_dir = vmem_pte_alloc(); if (!pt_dir) @@ -150,7 +126,6 @@ static int vmem_add_range(unsigned long start, unsigned long size) } pt_dir = pte_offset_kernel(pm_dir, address); - pte = pfn_pte(address >> PAGE_SHIFT, PAGE_KERNEL); *pt_dir = pte; } ret = 0; @@ -181,6 +156,13 @@ static void vmem_remove_range(unsigned long start, unsigned long size) pm_dir = pmd_offset(pu_dir, address); if (pmd_none(*pm_dir)) continue; + + if (pmd_huge(*pm_dir)) { + pmd_clear_kernel(pm_dir); + address += HPAGE_SIZE - PAGE_SIZE; + continue; + } + pt_dir = pte_offset_kernel(pm_dir, address); *pt_dir = pte; } @@ -190,10 +172,9 @@ static void vmem_remove_range(unsigned long start, unsigned long size) /* * Add a backed mem_map array to the virtual mem_map array. */ -static int vmem_add_mem_map(unsigned long start, unsigned long size) +int __meminit vmemmap_populate(struct page *start, unsigned long nr, int node) { unsigned long address, start_addr, end_addr; - struct page *map_start, *map_end; pgd_t *pg_dir; pud_t *pu_dir; pmd_t *pm_dir; @@ -201,11 +182,8 @@ static int vmem_add_mem_map(unsigned long start, unsigned long size) pte_t pte; int ret = -ENOMEM; - map_start = VMEM_MAP + PFN_DOWN(start); - map_end = VMEM_MAP + PFN_DOWN(start + size); - - start_addr = (unsigned long) map_start & PAGE_MASK; - end_addr = PFN_ALIGN((unsigned long) map_end); + start_addr = (unsigned long) start; + end_addr = (unsigned long) (start + nr); for (address = start_addr; address < end_addr; address += PAGE_SIZE) { pg_dir = pgd_offset_k(address); @@ -249,16 +227,6 @@ out: return ret; } -static int vmem_add_mem(unsigned long start, unsigned long size) -{ - int ret; - - ret = vmem_add_mem_map(start, size); - if (ret) - return ret; - return vmem_add_range(start, size); -} - /* * Add memory segment to the segment list if it doesn't overlap with * an already present segment. @@ -296,7 +264,7 @@ static void __remove_shared_memory(struct memory_segment *seg) vmem_remove_range(seg->start, seg->size); } -int remove_shared_memory(unsigned long start, unsigned long size) +int vmem_remove_mapping(unsigned long start, unsigned long size) { struct memory_segment *seg; int ret; @@ -320,11 +288,9 @@ out: return ret; } -int add_shared_memory(unsigned long start, unsigned long size) +int vmem_add_mapping(unsigned long start, unsigned long size) { struct memory_segment *seg; - struct page *page; - unsigned long pfn, num_pfn, end_pfn; int ret; mutex_lock(&vmem_mutex); @@ -339,24 +305,9 @@ int add_shared_memory(unsigned long start, unsigned long size) if (ret) goto out_free; - ret = vmem_add_mem(start, size); + ret = vmem_add_mem(start, size, 0); if (ret) goto out_remove; - - pfn = PFN_DOWN(start); - num_pfn = PFN_DOWN(size); - end_pfn = pfn + num_pfn; - - page = pfn_to_page(pfn); - memset(page, 0, num_pfn * sizeof(struct page)); - - for (; pfn < end_pfn; pfn++) { - page = pfn_to_page(pfn); - init_page_count(page); - reset_page_mapcount(page); - SetPageReserved(page); - INIT_LIST_HEAD(&page->lru); - } goto out; out_remove: @@ -375,14 +326,34 @@ out: */ void __init vmem_map_init(void) { + unsigned long ro_start, ro_end; + unsigned long start, end; int i; INIT_LIST_HEAD(&init_mm.context.crst_list); INIT_LIST_HEAD(&init_mm.context.pgtable_list); init_mm.context.noexec = 0; - NODE_DATA(0)->node_mem_map = VMEM_MAP; - for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) - vmem_add_mem(memory_chunk[i].addr, memory_chunk[i].size); + ro_start = ((unsigned long)&_stext) & PAGE_MASK; + ro_end = PFN_ALIGN((unsigned long)&_eshared); + for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) { + start = memory_chunk[i].addr; + end = memory_chunk[i].addr + memory_chunk[i].size; + if (start >= ro_end || end <= ro_start) + vmem_add_mem(start, end - start, 0); + else if (start >= ro_start && end <= ro_end) + vmem_add_mem(start, end - start, 1); + else if (start >= ro_start) { + vmem_add_mem(start, ro_end - start, 1); + vmem_add_mem(ro_end, end - ro_end, 0); + } else if (end < ro_end) { + vmem_add_mem(start, ro_start - start, 0); + vmem_add_mem(ro_start, end - ro_start, 1); + } else { + vmem_add_mem(start, ro_start - start, 0); + vmem_add_mem(ro_start, ro_end - ro_start, 1); + vmem_add_mem(ro_end, end - ro_end, 0); + } + } } /* diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c index b8f35bc..9e784d5 100644 --- a/drivers/s390/char/sclp_config.c +++ b/drivers/s390/char/sclp_config.c @@ -10,6 +10,7 @@ #include <linux/cpu.h> #include <linux/sysdev.h> #include <linux/workqueue.h> +#include <asm/smp.h> #include "sclp.h" #define TAG "sclp_config: " @@ -19,9 +20,11 @@ struct conf_mgm_data { u8 ev_qualifier; } __attribute__((packed)); +#define EV_QUAL_CPU_CHANGE 1 #define EV_QUAL_CAP_CHANGE 3 static struct work_struct sclp_cpu_capability_work; +static struct work_struct sclp_cpu_change_work; static void sclp_cpu_capability_notify(struct work_struct *work) { @@ -37,13 +40,24 @@ static void sclp_cpu_capability_notify(struct work_struct *work) put_online_cpus(); } +static void sclp_cpu_change_notify(struct work_struct *work) +{ + smp_rescan_cpus(); +} + static void sclp_conf_receiver_fn(struct evbuf_header *evbuf) { struct conf_mgm_data *cdata; cdata = (struct conf_mgm_data *)(evbuf + 1); - if (cdata->ev_qualifier == EV_QUAL_CAP_CHANGE) + switch (cdata->ev_qualifier) { + case EV_QUAL_CPU_CHANGE: + schedule_work(&sclp_cpu_change_work); + break; + case EV_QUAL_CAP_CHANGE: schedule_work(&sclp_cpu_capability_work); + break; + } } static struct sclp_register sclp_conf_register = @@ -57,6 +71,7 @@ static int __init sclp_conf_init(void) int rc; INIT_WORK(&sclp_cpu_capability_work, sclp_cpu_capability_notify); + INIT_WORK(&sclp_cpu_change_work, sclp_cpu_change_notify); rc = sclp_register(&sclp_conf_register); if (rc) { diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index fe1ad17..85b2e51 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -318,7 +318,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const { struct ccwgroup_device *gdev; struct ccwgroup_driver *gdrv; - unsigned int value; + unsigned long value; int ret; gdev = to_ccwgroupdev(dev); @@ -329,7 +329,9 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const if (!try_module_get(gdrv->owner)) return -EINVAL; - value = simple_strtoul(buf, NULL, 0); + ret = strict_strtoul(buf, 0, &value); + if (ret) + goto out; ret = count; if (value == 1) ccwgroup_set_online(gdev); @@ -337,6 +339,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const ccwgroup_set_offline(gdev); else ret = -EINVAL; +out: module_put(gdrv->owner); return ret; } diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 23ffcc4..08a5781 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -407,8 +407,7 @@ cio_modify (struct subchannel *sch) /* * Enable subchannel. */ -int cio_enable_subchannel(struct subchannel *sch, unsigned int isc, - u32 intparm) +int cio_enable_subchannel(struct subchannel *sch, u32 intparm) { char dbf_txt[15]; int ccode; @@ -426,7 +425,7 @@ int cio_enable_subchannel(struct subchannel *sch, unsigned int isc, for (retry = 5, ret = 0; retry > 0; retry--) { sch->schib.pmcw.ena = 1; - sch->schib.pmcw.isc = isc; + sch->schib.pmcw.isc = sch->isc; sch->schib.pmcw.intparm = intparm; ret = cio_modify(sch); if (ret == -ENODEV) @@ -600,6 +599,7 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid) else sch->opm = chp_get_sch_opm(sch); sch->lpm = sch->schib.pmcw.pam & sch->opm; + sch->isc = 3; CIO_DEBUG(KERN_INFO, 0, "Detected device %04x on subchannel 0.%x.%04X" @@ -610,13 +610,11 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid) /* * We now have to initially ... - * ... set "interruption subclass" * ... enable "concurrent sense" * ... enable "multipath mode" if more than one * CHPID is available. This is done regardless * whether multiple paths are available for us. */ - sch->schib.pmcw.isc = 3; /* could be smth. else */ sch->schib.pmcw.csense = 1; /* concurrent sense */ sch->schib.pmcw.ena = 0; if ((sch->lpm & (sch->lpm - 1)) != 0) @@ -812,6 +810,7 @@ cio_probe_console(void) * enable console I/O-interrupt subclass 7 */ ctl_set_bit(6, 24); + console_subchannel.isc = 7; console_subchannel.schib.pmcw.isc = 7; console_subchannel.schib.pmcw.intparm = (u32)(addr_t)&console_subchannel; diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h index 08f2235..3c75412 100644 --- a/drivers/s390/cio/cio.h +++ b/drivers/s390/cio/cio.h @@ -74,6 +74,7 @@ struct subchannel { __u8 lpm; /* logical path mask */ __u8 opm; /* operational path mask */ struct schib schib; /* subchannel information block */ + int isc; /* desired interruption subclass */ struct chsc_ssd_info ssd_info; /* subchannel description */ struct device dev; /* entry in device tree */ struct css_driver *driver; @@ -85,7 +86,7 @@ struct subchannel { #define to_subchannel(n) container_of(n, struct subchannel, dev) extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id); -extern int cio_enable_subchannel(struct subchannel *, unsigned int, u32); +extern int cio_enable_subchannel(struct subchannel *, u32); extern int cio_disable_subchannel (struct subchannel *); extern int cio_cancel (struct subchannel *); extern int cio_clear (struct subchannel *); diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c index f4c132a..2808b68 100644 --- a/drivers/s390/cio/cmf.c +++ b/drivers/s390/cio/cmf.c @@ -1219,16 +1219,21 @@ static ssize_t cmb_enable_store(struct device *dev, { struct ccw_device *cdev; int ret; + unsigned long val; + + ret = strict_strtoul(buf, 16, &val); + if (ret) + return ret; cdev = to_ccwdev(dev); - switch (buf[0]) { - case '0': + switch (val) { + case 0: ret = disable_cmf(cdev); if (ret) dev_info(&cdev->dev, "disable_cmf failed (%d)\n", ret); break; - case '1': + case 1: ret = enable_cmf(cdev); if (ret && ret != -EBUSY) dev_info(&cdev->dev, "enable_cmf failed (%d)\n", ret); diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index c1afab5..595e327 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -705,13 +705,17 @@ css_cm_enable_store(struct device *dev, struct device_attribute *attr, { struct channel_subsystem *css = to_css(dev); int ret; + unsigned long val; + ret = strict_strtoul(buf, 16, &val); + if (ret) + return ret; mutex_lock(&css->mutex); - switch (buf[0]) { - case '0': + switch (val) { + case 0: ret = css->cm_enabled ? chsc_secm(css, 0) : 0; break; - case '1': + case 1: ret = css->cm_enabled ? 0 : chsc_secm(css, 1); break; default: diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index e0c7adb..abfd601 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -512,8 +512,8 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ccw_device *cdev = to_ccwdev(dev); - int i, force; - char *tmp; + int force, ret; + unsigned long i; if (atomic_cmpxchg(&cdev->private->onoff, 0, 1) != 0) return -EAGAIN; @@ -525,25 +525,30 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr, if (!strncmp(buf, "force\n", count)) { force = 1; i = 1; + ret = 0; } else { force = 0; - i = simple_strtoul(buf, &tmp, 16); + ret = strict_strtoul(buf, 16, &i); } - + if (ret) + goto out; switch (i) { case 0: online_store_handle_offline(cdev); + ret = count; break; case 1: online_store_handle_online(cdev, force); + ret = count; break; default: - count = -EINVAL; + ret = -EINVAL; } +out: if (cdev->drv) module_put(cdev->drv->owner); atomic_set(&cdev->private->onoff, 0); - return count; + return ret; } static ssize_t diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index 4b92c84..99403b0 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -555,8 +555,7 @@ ccw_device_recognition(struct ccw_device *cdev) (cdev->private->state != DEV_STATE_BOXED)) return -EINVAL; sch = to_subchannel(cdev->dev.parent); - ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc, - (u32)(addr_t)sch); + ret = cio_enable_subchannel(sch, (u32)(addr_t)sch); if (ret != 0) /* Couldn't enable the subchannel for i/o. Sick device. */ return ret; @@ -667,8 +666,7 @@ ccw_device_online(struct ccw_device *cdev) sch = to_subchannel(cdev->dev.parent); if (css_init_done && !get_device(&cdev->dev)) return -ENODEV; - ret = cio_enable_subchannel(sch, sch->schib.pmcw.isc, - (u32)(addr_t)sch); + ret = cio_enable_subchannel(sch, (u32)(addr_t)sch); if (ret != 0) { /* Couldn't enable the subchannel for i/o. Sick device. */ if (ret == -ENODEV) @@ -1048,8 +1046,7 @@ ccw_device_start_id(struct ccw_device *cdev, enum dev_event dev_event) struct subchannel *sch; sch = to_subchannel(cdev->dev.parent); - if (cio_enable_subchannel(sch, sch->schib.pmcw.isc, - (u32)(addr_t)sch) != 0) + if (cio_enable_subchannel(sch, (u32)(addr_t)sch) != 0) /* Couldn't enable the subchannel for i/o. Sick device. */ return; @@ -1082,7 +1079,6 @@ device_trigger_reprobe(struct subchannel *sch) */ sch->lpm = sch->schib.pmcw.pam & sch->opm; /* Re-set some bits in the pmcw that were lost. */ - sch->schib.pmcw.isc = 3; sch->schib.pmcw.csense = 1; sch->schib.pmcw.ena = 0; if ((sch->lpm & (sch->lpm - 1)) != 0) diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index a1718a0..f308ad5 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -508,7 +508,7 @@ ccw_device_stlck(struct ccw_device *cdev) return -ENOMEM; } spin_lock_irqsave(sch->lock, flags); - ret = cio_enable_subchannel(sch, 3, (u32)(addr_t)sch); + ret = cio_enable_subchannel(sch, (u32)(addr_t)sch); if (ret) goto out_unlock; /* diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c index 43876e2..445cf36 100644 --- a/drivers/s390/cio/qdio.c +++ b/drivers/s390/cio/qdio.c @@ -3663,11 +3663,11 @@ qdio_performance_stats_show(struct bus_type *bus, char *buf) static ssize_t qdio_performance_stats_store(struct bus_type *bus, const char *buf, size_t count) { - char *tmp; - int i; + unsigned long i; + int ret; - i = simple_strtoul(buf, &tmp, 16); - if ((i == 0) || (i == 1)) { + ret = strict_strtoul(buf, 16, &i); + if (!ret && ((i == 0) || (i == 1))) { if (i == qdio_performance_stats) return count; qdio_performance_stats = i; diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index bbef376..47a7e62 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -17,6 +17,7 @@ #include <linux/virtio_config.h> #include <linux/interrupt.h> #include <linux/virtio_ring.h> +#include <linux/pfn.h> #include <asm/io.h> #include <asm/kvm_para.h> #include <asm/kvm_virtio.h> @@ -180,11 +181,10 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev, config = kvm_vq_config(kdev->desc)+index; - if (add_shared_memory(config->address, - vring_size(config->num, PAGE_SIZE))) { - err = -ENOMEM; + err = vmem_add_mapping(config->address, + vring_size(config->num, PAGE_SIZE)); + if (err) goto out; - } vq = vring_new_virtqueue(config->num, vdev, (void *) config->address, kvm_notify, callback); @@ -202,8 +202,8 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev, vq->priv = config; return vq; unmap: - remove_shared_memory(config->address, vring_size(config->num, - PAGE_SIZE)); + vmem_remove_mapping(config->address, + vring_size(config->num, PAGE_SIZE)); out: return ERR_PTR(err); } @@ -213,8 +213,8 @@ static void kvm_del_vq(struct virtqueue *vq) struct kvm_vqconfig *config = vq->priv; vring_del_virtqueue(vq); - remove_shared_memory(config->address, - vring_size(config->num, PAGE_SIZE)); + vmem_remove_mapping(config->address, + vring_size(config->num, PAGE_SIZE)); } /* @@ -318,12 +318,13 @@ static int __init kvm_devices_init(void) return rc; } - if (add_shared_memory((max_pfn) << PAGE_SHIFT, PAGE_SIZE)) { + rc = vmem_add_mapping(PFN_PHYS(max_pfn), PAGE_SIZE); + if (rc) { device_unregister(&kvm_root); - return -ENOMEM; + return rc; } - kvm_devices = (void *) (max_pfn << PAGE_SHIFT); + kvm_devices = (void *) PFN_PHYS(max_pfn); ctl_set_bit(0, 9); register_external_interrupt(0x2603, kvm_extint_handler); @@ -1005,7 +1005,8 @@ config TMPFS_POSIX_ACL config HUGETLBFS bool "HugeTLB file system support" - depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || BROKEN + depends on X86 || IA64 || PPC64 || SPARC64 || (SUPERH && MMU) || \ + (S390 && 64BIT) || BROKEN help hugetlbfs is a filesystem backing for HugeTLB pages, based on ramfs. For architectures that support it, say Y here and read diff --git a/include/asm-s390/hugetlb.h b/include/asm-s390/hugetlb.h new file mode 100644 index 0000000..600a776 --- /dev/null +++ b/include/asm-s390/hugetlb.h @@ -0,0 +1,183 @@ +/* + * IBM System z Huge TLB Page Support for Kernel. + * + * Copyright IBM Corp. 2008 + * Author(s): Gerald Schaefer <gerald.schaefer@de.ibm.com> + */ + +#ifndef _ASM_S390_HUGETLB_H +#define _ASM_S390_HUGETLB_H + +#include <asm/page.h> +#include <asm/pgtable.h> + + +#define is_hugepage_only_range(mm, addr, len) 0 +#define hugetlb_free_pgd_range free_pgd_range + +void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte); + +/* + * 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(unsigned long addr, unsigned long len) +{ + if (len & ~HPAGE_MASK) + return -EINVAL; + if (addr & ~HPAGE_MASK) + return -EINVAL; + return 0; +} + +#define hugetlb_prefault_arch_hook(mm) do { } while (0) + +int arch_prepare_hugepage(struct page *page); +void arch_release_hugepage(struct page *page); + +static inline pte_t pte_mkhuge(pte_t pte) +{ + /* + * PROT_NONE needs to be remapped from the pte type to the ste type. + * The HW invalid bit is also different for pte and ste. The pte + * invalid bit happens to be the same as the ste _SEGMENT_ENTRY_LARGE + * bit, so we don't have to clear it. + */ + if (pte_val(pte) & _PAGE_INVALID) { + if (pte_val(pte) & _PAGE_SWT) + pte_val(pte) |= _HPAGE_TYPE_NONE; + pte_val(pte) |= _SEGMENT_ENTRY_INV; + } + /* + * Clear SW pte bits SWT and SWX, there are no SW bits in a segment + * table entry. + */ + pte_val(pte) &= ~(_PAGE_SWT | _PAGE_SWX); + /* + * Also set the change-override bit because we don't need dirty bit + * tracking for hugetlbfs pages. + */ + pte_val(pte) |= (_SEGMENT_ENTRY_LARGE | _SEGMENT_ENTRY_CO); + return pte; +} + +static inline pte_t huge_pte_wrprotect(pte_t pte) +{ + pte_val(pte) |= _PAGE_RO; + return pte; +} + +static inline int huge_pte_none(pte_t pte) +{ + return (pte_val(pte) & _SEGMENT_ENTRY_INV) && + !(pte_val(pte) & _SEGMENT_ENTRY_RO); +} + +static inline pte_t huge_ptep_get(pte_t *ptep) +{ + pte_t pte = *ptep; + unsigned long mask; + + if (!MACHINE_HAS_HPAGE) { + ptep = (pte_t *) (pte_val(pte) & _SEGMENT_ENTRY_ORIGIN); + if (ptep) { + mask = pte_val(pte) & + (_SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO); + pte = pte_mkhuge(*ptep); + pte_val(pte) |= mask; + } + } + return pte; +} + +static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + pte_t pte = huge_ptep_get(ptep); + + pmd_clear((pmd_t *) ptep); + return pte; +} + +static inline void __pmd_csp(pmd_t *pmdp) +{ + register unsigned long reg2 asm("2") = pmd_val(*pmdp); + register unsigned long reg3 asm("3") = pmd_val(*pmdp) | + _SEGMENT_ENTRY_INV; + register unsigned long reg4 asm("4") = ((unsigned long) pmdp) + 5; + + asm volatile( + " csp %1,%3" + : "=m" (*pmdp) + : "d" (reg2), "d" (reg3), "d" (reg4), "m" (*pmdp) : "cc"); + pmd_val(*pmdp) = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY; +} + +static inline void __pmd_idte(unsigned long address, pmd_t *pmdp) +{ + unsigned long sto = (unsigned long) pmdp - + pmd_index(address) * sizeof(pmd_t); + + if (!(pmd_val(*pmdp) & _SEGMENT_ENTRY_INV)) { + asm volatile( + " .insn rrf,0xb98e0000,%2,%3,0,0" + : "=m" (*pmdp) + : "m" (*pmdp), "a" (sto), + "a" ((address & HPAGE_MASK)) + ); + } + pmd_val(*pmdp) = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY; +} + +static inline void huge_ptep_invalidate(struct mm_struct *mm, + unsigned long address, pte_t *ptep) +{ + pmd_t *pmdp = (pmd_t *) ptep; + + if (!MACHINE_HAS_IDTE) { + __pmd_csp(pmdp); + if (mm->context.noexec) { + pmdp = get_shadow_table(pmdp); + __pmd_csp(pmdp); + } + return; + } + + __pmd_idte(address, pmdp); + if (mm->context.noexec) { + pmdp = get_shadow_table(pmdp); + __pmd_idte(address, pmdp); + } + return; +} + +#define huge_ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty) \ +({ \ + int __changed = !pte_same(huge_ptep_get(__ptep), __entry); \ + if (__changed) { \ + huge_ptep_invalidate((__vma)->vm_mm, __addr, __ptep); \ + set_huge_pte_at((__vma)->vm_mm, __addr, __ptep, __entry); \ + } \ + __changed; \ +}) + +#define huge_ptep_set_wrprotect(__mm, __addr, __ptep) \ +({ \ + pte_t __pte = huge_ptep_get(__ptep); \ + if (pte_write(__pte)) { \ + if (atomic_read(&(__mm)->mm_users) > 1 || \ + (__mm) != current->active_mm) \ + huge_ptep_invalidate(__mm, __addr, __ptep); \ + set_huge_pte_at(__mm, __addr, __ptep, \ + huge_pte_wrprotect(__pte)); \ + } \ +}) + +static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) +{ + huge_ptep_invalidate(vma->vm_mm, address, ptep); +} + +#endif /* _ASM_S390_HUGETLB_H */ diff --git a/include/asm-s390/page.h b/include/asm-s390/page.h index fe7f92b..f0f4579 100644 --- a/include/asm-s390/page.h +++ b/include/asm-s390/page.h @@ -19,17 +19,34 @@ #define PAGE_DEFAULT_ACC 0 #define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4) +#define HPAGE_SHIFT 20 +#define HPAGE_SIZE (1UL << HPAGE_SHIFT) +#define HPAGE_MASK (~(HPAGE_SIZE - 1)) +#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) + +#define ARCH_HAS_SETCLEAR_HUGE_PTE +#define ARCH_HAS_HUGE_PTE_TYPE +#define ARCH_HAS_PREPARE_HUGEPAGE +#define ARCH_HAS_HUGEPAGE_CLEAR_FLUSH + #include <asm/setup.h> #ifndef __ASSEMBLY__ static inline void clear_page(void *page) { - register unsigned long reg1 asm ("1") = 0; - register void *reg2 asm ("2") = page; - register unsigned long reg3 asm ("3") = 4096; - asm volatile( - " mvcl 2,0" - : "+d" (reg2), "+d" (reg3) : "d" (reg1) : "memory", "cc"); + if (MACHINE_HAS_PFMF) { + asm volatile( + " .insn rre,0xb9af0000,%0,%1" + : : "d" (0x10000), "a" (page) : "memory", "cc"); + } else { + register unsigned long reg1 asm ("1") = 0; + register void *reg2 asm ("2") = page; + register unsigned long reg3 asm ("3") = 4096; + asm volatile( + " mvcl 2,0" + : "+d" (reg2), "+d" (reg3) : "d" (reg1) + : "memory", "cc"); + } } static inline void copy_page(void *to, void *from) @@ -108,26 +125,6 @@ page_get_storage_key(unsigned long addr) return skey; } -extern unsigned long max_pfn; - -static inline int pfn_valid(unsigned long pfn) -{ - unsigned long dummy; - int ccode; - - if (pfn >= max_pfn) - return 0; - - asm volatile( - " lra %0,0(%2)\n" - " ipm %1\n" - " srl %1,28\n" - : "=d" (dummy), "=d" (ccode) - : "a" (pfn << PAGE_SHIFT) - : "cc"); - return !ccode; -} - #endif /* !__ASSEMBLY__ */ /* to align the pointer to the (next) page boundary */ diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h index f8347ce..c7f4f8e 100644 --- a/include/asm-s390/pgtable.h +++ b/include/asm-s390/pgtable.h @@ -129,7 +129,7 @@ extern char empty_zero_page[PAGE_SIZE]; #define VMEM_MAX_PAGES ((VMEM_MAP_END - VMALLOC_END) / sizeof(struct page)) #define VMEM_MAX_PFN min(VMALLOC_START >> PAGE_SHIFT, VMEM_MAX_PAGES) #define VMEM_MAX_PHYS ((VMEM_MAX_PFN << PAGE_SHIFT) & ~((16 << 20) - 1)) -#define VMEM_MAP ((struct page *) VMALLOC_END) +#define vmemmap ((struct page *) VMALLOC_END) /* * A 31 bit pagetable entry of S390 has following format: @@ -234,6 +234,15 @@ extern char empty_zero_page[PAGE_SIZE]; #define _PAGE_TYPE_EX_RW 0x002 /* + * Only four types for huge pages, using the invalid bit and protection bit + * of a segment table entry. + */ +#define _HPAGE_TYPE_EMPTY 0x020 /* _SEGMENT_ENTRY_INV */ +#define _HPAGE_TYPE_NONE 0x220 +#define _HPAGE_TYPE_RO 0x200 /* _SEGMENT_ENTRY_RO */ +#define _HPAGE_TYPE_RW 0x000 + +/* * PTE type bits are rather complicated. handle_pte_fault uses pte_present, * pte_none and pte_file to find out the pte type WITHOUT holding the page * table lock. ptep_clear_flush on the other hand uses ptep_clear_flush to @@ -325,6 +334,9 @@ extern char empty_zero_page[PAGE_SIZE]; #define _SEGMENT_ENTRY (0) #define _SEGMENT_ENTRY_EMPTY (_SEGMENT_ENTRY_INV) +#define _SEGMENT_ENTRY_LARGE 0x400 /* STE-format control, large page */ +#define _SEGMENT_ENTRY_CO 0x100 /* change-recording override */ + #endif /* __s390x__ */ /* @@ -1063,8 +1075,8 @@ static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset) #define kern_addr_valid(addr) (1) -extern int add_shared_memory(unsigned long start, unsigned long size); -extern int remove_shared_memory(unsigned long start, unsigned long size); +extern int vmem_add_mapping(unsigned long start, unsigned long size); +extern int vmem_remove_mapping(unsigned long start, unsigned long size); extern int s390_enable_sie(void); /* @@ -1072,9 +1084,6 @@ extern int s390_enable_sie(void); */ #define pgtable_cache_init() do { } while (0) -#define __HAVE_ARCH_MEMMAP_INIT -extern void memmap_init(unsigned long, int, unsigned long, unsigned long); - #include <asm-generic/pgtable.h> #endif /* _S390_PAGE_H */ diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h index 8eaf343..a00f79d 100644 --- a/include/asm-s390/processor.h +++ b/include/asm-s390/processor.h @@ -172,16 +172,7 @@ extern unsigned long thread_saved_pc(struct task_struct *t); */ extern void task_show_regs(struct seq_file *m, struct task_struct *task); -extern void show_registers(struct pt_regs *regs); extern void show_code(struct pt_regs *regs); -extern void show_trace(struct task_struct *task, unsigned long *sp); -#ifdef CONFIG_64BIT -extern void show_last_breaking_event(struct pt_regs *regs); -#else -static inline void show_last_breaking_event(struct pt_regs *regs) -{ -} -#endif unsigned long get_wchan(struct task_struct *p); #define task_pt_regs(tsk) ((struct pt_regs *) \ diff --git a/include/asm-s390/ptrace.h b/include/asm-s390/ptrace.h index 61f6952..441d7c2 100644 --- a/include/asm-s390/ptrace.h +++ b/include/asm-s390/ptrace.h @@ -463,8 +463,6 @@ struct user_regs_struct }; #ifdef __KERNEL__ -#define __ARCH_SYS_PTRACE 1 - /* * These are defined as per linux/ptrace.h, which see. */ diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h index aaf4b51..ba69674 100644 --- a/include/asm-s390/setup.h +++ b/include/asm-s390/setup.h @@ -59,23 +59,42 @@ extern unsigned int s390_noexec; */ extern unsigned long machine_flags; -#define MACHINE_IS_VM (machine_flags & 1) -#define MACHINE_IS_P390 (machine_flags & 4) -#define MACHINE_HAS_MVPG (machine_flags & 16) -#define MACHINE_IS_KVM (machine_flags & 64) -#define MACHINE_HAS_IDTE (machine_flags & 128) -#define MACHINE_HAS_DIAG9C (machine_flags & 256) +#define MACHINE_FLAG_VM (1UL << 0) +#define MACHINE_FLAG_IEEE (1UL << 1) +#define MACHINE_FLAG_P390 (1UL << 2) +#define MACHINE_FLAG_CSP (1UL << 3) +#define MACHINE_FLAG_MVPG (1UL << 4) +#define MACHINE_FLAG_DIAG44 (1UL << 5) +#define MACHINE_FLAG_IDTE (1UL << 6) +#define MACHINE_FLAG_DIAG9C (1UL << 7) +#define MACHINE_FLAG_MVCOS (1UL << 8) +#define MACHINE_FLAG_KVM (1UL << 9) +#define MACHINE_FLAG_HPAGE (1UL << 10) +#define MACHINE_FLAG_PFMF (1UL << 11) + +#define MACHINE_IS_VM (machine_flags & MACHINE_FLAG_VM) +#define MACHINE_IS_KVM (machine_flags & MACHINE_FLAG_KVM) +#define MACHINE_IS_P390 (machine_flags & MACHINE_FLAG_P390) +#define MACHINE_HAS_DIAG9C (machine_flags & MACHINE_FLAG_DIAG9C) #ifndef __s390x__ -#define MACHINE_HAS_IEEE (machine_flags & 2) -#define MACHINE_HAS_CSP (machine_flags & 8) +#define MACHINE_HAS_IEEE (machine_flags & MACHINE_FLAG_IEEE) +#define MACHINE_HAS_CSP (machine_flags & MACHINE_FLAG_CSP) +#define MACHINE_HAS_IDTE (0) #define MACHINE_HAS_DIAG44 (1) +#define MACHINE_HAS_MVPG (machine_flags & MACHINE_FLAG_MVPG) #define MACHINE_HAS_MVCOS (0) +#define MACHINE_HAS_HPAGE (0) +#define MACHINE_HAS_PFMF (0) #else /* __s390x__ */ #define MACHINE_HAS_IEEE (1) #define MACHINE_HAS_CSP (1) -#define MACHINE_HAS_DIAG44 (machine_flags & 32) -#define MACHINE_HAS_MVCOS (machine_flags & 512) +#define MACHINE_HAS_IDTE (machine_flags & MACHINE_FLAG_IDTE) +#define MACHINE_HAS_DIAG44 (machine_flags & MACHINE_FLAG_DIAG44) +#define MACHINE_HAS_MVPG (1) +#define MACHINE_HAS_MVCOS (machine_flags & MACHINE_FLAG_MVCOS) +#define MACHINE_HAS_HPAGE (machine_flags & MACHINE_FLAG_HPAGE) +#define MACHINE_HAS_PFMF (machine_flags & MACHINE_FLAG_PFMF) #endif /* __s390x__ */ #define MACHINE_HAS_SCLP (!MACHINE_IS_P390) diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h index 6f3821a..ae89cf2 100644 --- a/include/asm-s390/smp.h +++ b/include/asm-s390/smp.h @@ -19,6 +19,7 @@ #include <asm/lowcore.h> #include <asm/sigp.h> #include <asm/ptrace.h> +#include <asm/system.h> /* s390 specific smp.c headers @@ -53,10 +54,7 @@ extern void machine_power_off_smp(void); static inline __u16 hard_smp_processor_id(void) { - __u16 cpu_address; - - asm volatile("stap %0" : "=m" (cpu_address)); - return cpu_address; + return stap(); } /* @@ -108,5 +106,11 @@ static inline void smp_send_stop(void) #define smp_cpu_not_running(cpu) 1 #endif +#ifdef CONFIG_HOTPLUG_CPU +extern int smp_rescan_cpus(void); +#else +static inline int smp_rescan_cpus(void) { return 0; } +#endif + extern union save_area *zfcpdump_save_areas[NR_CPUS + 1]; #endif diff --git a/include/asm-s390/sparsemem.h b/include/asm-s390/sparsemem.h new file mode 100644 index 0000000..06dfdab --- /dev/null +++ b/include/asm-s390/sparsemem.h @@ -0,0 +1,18 @@ +#ifndef _ASM_S390_SPARSEMEM_H +#define _ASM_S390_SPARSEMEM_H + +#define SECTION_SIZE_BITS 25 + +#ifdef CONFIG_64BIT + +#define MAX_PHYSADDR_BITS 42 +#define MAX_PHYSMEM_BITS 42 + +#else + +#define MAX_PHYSADDR_BITS 31 +#define MAX_PHYSMEM_BITS 31 + +#endif /* CONFIG_64BIT */ + +#endif /* _ASM_S390_SPARSEMEM_H */ diff --git a/include/asm-s390/sysinfo.h b/include/asm-s390/sysinfo.h index abe10ae..79d0134 100644 --- a/include/asm-s390/sysinfo.h +++ b/include/asm-s390/sysinfo.h @@ -11,6 +11,9 @@ * Christian Borntraeger <borntraeger@de.ibm.com> */ +#ifndef __ASM_S390_SYSINFO_H +#define __ASM_S390_SYSINFO_H + struct sysinfo_1_1_1 { char reserved_0[32]; char manufacturer[16]; @@ -114,3 +117,5 @@ static inline int stsi(void *sysinfo, int fc, int sel1, int sel2) : "cc", "memory"); return r0; } + +#endif /* __ASM_S390_SYSINFO_H */ diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h index 92098df..c819ae2 100644 --- a/include/asm-s390/system.h +++ b/include/asm-s390/system.h @@ -16,6 +16,7 @@ #include <asm/ptrace.h> #include <asm/setup.h> #include <asm/processor.h> +#include <asm/lowcore.h> #ifdef __KERNEL__ @@ -422,6 +423,23 @@ extern void smp_ctl_clear_bit(int cr, int bit); #endif /* CONFIG_SMP */ +static inline unsigned int stfl(void) +{ + asm volatile( + " .insn s,0xb2b10000,0(0)\n" /* stfl */ + "0:\n" + EX_TABLE(0b,0b)); + return S390_lowcore.stfl_fac_list; +} + +static inline unsigned short stap(void) +{ + unsigned short cpu_address; + + asm volatile("stap %0" : "=m" (cpu_address)); + return cpu_address; +} + extern void (*_machine_restart)(char *command); extern void (*_machine_halt)(void); extern void (*_machine_power_off)(void); diff --git a/include/asm-s390/tlbflush.h b/include/asm-s390/tlbflush.h index 9e57a93..d60394b 100644 --- a/include/asm-s390/tlbflush.h +++ b/include/asm-s390/tlbflush.h @@ -2,6 +2,7 @@ #define _S390_TLBFLUSH_H #include <linux/mm.h> +#include <linux/sched.h> #include <asm/processor.h> #include <asm/pgalloc.h> diff --git a/include/asm-s390/topology.h b/include/asm-s390/topology.h index 8e97b06..d96c916 100644 --- a/include/asm-s390/topology.h +++ b/include/asm-s390/topology.h @@ -7,6 +7,10 @@ cpumask_t cpu_coregroup_map(unsigned int cpu); +extern cpumask_t cpu_core_map[NR_CPUS]; + +#define topology_core_siblings(cpu) (cpu_core_map[cpu]) + int topology_set_cpu_management(int fc); void topology_schedule_update(void); |
