Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751233AbXAIJ04 (ORCPT ); Tue, 9 Jan 2007 04:26:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751234AbXAIJ04 (ORCPT ); Tue, 9 Jan 2007 04:26:56 -0500 Received: from mtagate1.de.ibm.com ([195.212.29.150]:45569 "EHLO mtagate1.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751233AbXAIJ0z (ORCPT ); Tue, 9 Jan 2007 04:26:55 -0500 Date: Tue, 9 Jan 2007 10:26:50 +0100 From: Martin Schwidefsky To: torvalds@osdl.org Cc: linux-kernel@vger.kernel.org Subject: Please pull git390 'for-linus' branch Message-ID: <20070109092650.GB767@skybase> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7547 Lines: 243 Please pull from 'for-linus' branch of git://git390.osdl.marist.edu/pub/scm/linux-2.6.git for-linus to receive the following updates: arch/s390/kernel/head31.S | 12 +++++++++++- arch/s390/kernel/head64.S | 12 +++++++++++- arch/s390/kernel/setup.c | 2 +- arch/s390/kernel/smp.c | 5 ++++- arch/s390/lib/uaccess_pt.c | 3 +++ arch/s390/lib/uaccess_std.c | 3 --- drivers/s390/char/vmcp.c | 2 +- drivers/s390/cio/cio.c | 12 ++++-------- include/asm-s390/futex.h | 4 +++- 9 files changed, 38 insertions(+), 17 deletions(-) Christian Borntraeger (1): [S390] locking problem with __cpcmd. Heiko Carstens (4): [S390] cio: use barrier() in stsch_reset. [S390] Fix cpu hotplug (missing 'online' attribute). [S390] Fix vmalloc area size calculation. [S390] don't call handle_mm_fault() if in an atomic context. Hongjie Yang (1): [S390] memory detection misses 128k. diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S index 4388b33..eca5070 100644 --- a/arch/s390/kernel/head31.S +++ b/arch/s390/kernel/head31.S @@ -164,11 +164,14 @@ startup_continue: srl %r7,28 clr %r6,%r7 # compare cc with last access code be .Lsame-.LPG1(%r13) - b .Lchkmem-.LPG1(%r13) + lhi %r8,0 # no program checks + b .Lsavchk-.LPG1(%r13) .Lsame: ar %r5,%r1 # add 128KB to end of chunk bno .Lloop-.LPG1(%r13) # r1 < 0x80000000 -> loop .Lchkmem: # > 2GB or tprot got a program check + lhi %r8,1 # set program check flag +.Lsavchk: clr %r4,%r5 # chunk size > 0? be .Lchkloop-.LPG1(%r13) st %r4,0(%r3) # store start address of chunk @@ -190,8 +193,15 @@ startup_continue: je .Ldonemem # if not, leave chi %r10,0 # do we have chunks left? je .Ldonemem + chi %r8,1 # program check ? + je .Lpgmchk + lr %r4,%r5 # potential new chunk + alr %r5,%r1 # add 128KB to end of chunk + j .Llpcnt +.Lpgmchk: alr %r5,%r1 # add 128KB to end of chunk lr %r4,%r5 # potential new chunk +.Llpcnt: clr %r5,%r9 # should we go on? jl .Lloop .Ldonemem: diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index c526279..6ba3f45 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -172,12 +172,15 @@ startup_continue: srl %r7,28 clr %r6,%r7 # compare cc with last access code je .Lsame - j .Lchkmem + lghi %r8,0 # no program checks + j .Lsavchk .Lsame: algr %r5,%r1 # add 128KB to end of chunk # no need to check here, brc 12,.Lloop # this is the same chunk .Lchkmem: # > 16EB or tprot got a program check + lghi %r8,1 # set program check flag +.Lsavchk: clgr %r4,%r5 # chunk size > 0? je .Lchkloop stg %r4,0(%r3) # store start address of chunk @@ -204,8 +207,15 @@ startup_continue: chi %r10, 0 # do we have chunks left? je .Ldonemem .Lhsaskip: + chi %r8,1 # program check ? + je .Lpgmchk + lgr %r4,%r5 # potential new chunk + algr %r5,%r1 # add 128KB to end of chunk + j .Llpcnt +.Lpgmchk: algr %r5,%r1 # add 128KB to end of chunk lgr %r4,%r5 # potential new chunk +.Llpcnt: clgr %r5,%r9 # should we go on? jl .Lloop .Ldonemem: diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 49ef206..5d8ee3b 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -476,7 +476,7 @@ static void __init setup_memory_end(void) int i; memory_size = real_size = 0; - max_phys = VMALLOC_END - VMALLOC_MIN_SIZE; + max_phys = VMALLOC_END_INIT - VMALLOC_MIN_SIZE; memory_end &= PAGE_MASK; max_mem = memory_end ? min(max_phys, memory_end) : max_phys; diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 19090f7..c0cd255 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -794,7 +794,10 @@ static int __init topology_init(void) int ret; for_each_possible_cpu(cpu) { - ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu); + struct cpu *c = &per_cpu(cpu_devices, cpu); + + c->hotpluggable = 1; + ret = register_cpu(c, cpu); if (ret) printk(KERN_WARNING "topology_init: register_cpu %d " "failed (%d)\n", cpu, ret); diff --git a/arch/s390/lib/uaccess_pt.c b/arch/s390/lib/uaccess_pt.c index 633249c..49c3e46 100644 --- a/arch/s390/lib/uaccess_pt.c +++ b/arch/s390/lib/uaccess_pt.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -18,6 +19,8 @@ static inline int __handle_fault(struct mm_struct *mm, unsigned long address, struct vm_area_struct *vma; int ret = -EFAULT; + if (in_atomic()) + return ret; down_read(&mm->mmap_sem); vma = find_vma(mm, address); if (unlikely(!vma)) diff --git a/arch/s390/lib/uaccess_std.c b/arch/s390/lib/uaccess_std.c index bbaca66..56a0214 100644 --- a/arch/s390/lib/uaccess_std.c +++ b/arch/s390/lib/uaccess_std.c @@ -258,8 +258,6 @@ int futex_atomic_op(int op, int __user *uaddr, int oparg, int *old) { int oldval = 0, newval, ret; - pagefault_disable(); - switch (op) { case FUTEX_OP_SET: __futex_atomic_op("lr %2,%5\n", @@ -284,7 +282,6 @@ int futex_atomic_op(int op, int __user *uaddr, int oparg, int *old) default: ret = -ENOSYS; } - pagefault_enable(); *old = oldval; return ret; } diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c index 1678b6c..a420cd0 100644 --- a/drivers/s390/char/vmcp.c +++ b/drivers/s390/char/vmcp.c @@ -117,7 +117,7 @@ vmcp_write(struct file *file, const char __user * buff, size_t count, return -ENOMEM; } debug_text_event(vmcp_debug, 1, cmd); - session->resp_size = __cpcmd(cmd, session->response, + session->resp_size = cpcmd(cmd, session->response, session->bufsize, &session->resp_code); up(&session->mutex); diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index b471ac4..ae1bf23 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -880,19 +880,15 @@ static void cio_reset_pgm_check_handler(void) static int stsch_reset(struct subchannel_id schid, volatile struct schib *addr) { int rc; - register struct subchannel_id reg1 asm ("1") = schid; pgm_check_occured = 0; s390_reset_pgm_handler = cio_reset_pgm_check_handler; + rc = stsch(schid, addr); + s390_reset_pgm_handler = NULL; - asm volatile( - " stsch 0(%2)\n" - " ipm %0\n" - " srl %0,28" - : "=d" (rc) - : "d" (reg1), "a" (addr), "m" (*addr) : "memory", "cc"); + /* The program check handler could have changed pgm_check_occured */ + barrier(); - s390_reset_pgm_handler = NULL; if (pgm_check_occured) return -EIO; else diff --git a/include/asm-s390/futex.h b/include/asm-s390/futex.h index 5e261e1..5c5d02d 100644 --- a/include/asm-s390/futex.h +++ b/include/asm-s390/futex.h @@ -4,8 +4,8 @@ #ifdef __KERNEL__ #include +#include #include -#include static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr) { @@ -21,7 +21,9 @@ static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr) if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int))) return -EFAULT; + pagefault_disable(); ret = uaccess.futex_atomic_op(op, uaddr, oparg, &oldval); + pagefault_enable(); if (!ret) { switch (cmp) { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/