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* s390/pkey: Introduce pkey kernel moduleHarald Freudenberger2017-02-231-0/+1
| | | | | | | | | | | | | | This patch introcudes a new kernel module pkey which is providing protected key handling and management functions. The pkey API is available within the kernel for other s390 specific code to create and manage protected keys. Additionally the functions are exported to user space via IOCTL calls. The implementation makes extensive use of functions provided by the zcrypt device driver. For generating protected keys from secure keys there is also a CEX coprocessor card needed. Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update defconfigsHeiko Carstens2017-01-161-2/+3
| | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* mm/usercopy: get rid of CONFIG_DEBUG_STRICT_USER_COPY_CHECKSJosh Poimboeuf2016-08-301-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are three usercopy warnings which are currently being silenced for gcc 4.6 and newer: 1) "copy_from_user() buffer size is too small" compile warning/error This is a static warning which happens when object size and copy size are both const, and copy size > object size. I didn't see any false positives for this one. So the function warning attribute seems to be working fine here. Note this scenario is always a bug and so I think it should be changed to *always* be an error, regardless of CONFIG_DEBUG_STRICT_USER_COPY_CHECKS. 2) "copy_from_user() buffer size is not provably correct" compile warning This is another static warning which happens when I enable __compiletime_object_size() for new compilers (and CONFIG_DEBUG_STRICT_USER_COPY_CHECKS). It happens when object size is const, but copy size is *not*. In this case there's no way to compare the two at build time, so it gives the warning. (Note the warning is a byproduct of the fact that gcc has no way of knowing whether the overflow function will be called, so the call isn't dead code and the warning attribute is activated.) So this warning seems to only indicate "this is an unusual pattern, maybe you should check it out" rather than "this is a bug". I get 102(!) of these warnings with allyesconfig and the __compiletime_object_size() gcc check removed. I don't know if there are any real bugs hiding in there, but from looking at a small sample, I didn't see any. According to Kees, it does sometimes find real bugs. But the false positive rate seems high. 3) "Buffer overflow detected" runtime warning This is a runtime warning where object size is const, and copy size > object size. All three warnings (both static and runtime) were completely disabled for gcc 4.6 with the following commit: 2fb0815c9ee6 ("gcc4: disable __compiletime_object_size for GCC 4.6+") That commit mistakenly assumed that the false positives were caused by a gcc bug in __compiletime_object_size(). But in fact, __compiletime_object_size() seems to be working fine. The false positives were instead triggered by #2 above. (Though I don't have an explanation for why the warnings supposedly only started showing up in gcc 4.6.) So remove warning #2 to get rid of all the false positives, and re-enable warnings #1 and #3 by reverting the above commit. Furthermore, since #1 is a real bug which is detected at compile time, upgrade it to always be an error. Having done all that, CONFIG_DEBUG_STRICT_USER_COPY_CHECKS is no longer needed. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Byungchul Park <byungchul.park@lge.com> Cc: Nilay Vaish <nilayvaish@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* s390/config: make the vector optimized crc function builtinChristian Borntraeger2016-08-081-1/+1
| | | | | | | | | For all configs with CONFIG_BTRFS_FS = y we should also make the optimized crc module builtin. Otherwise early mounts will fall back to the software variant. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: Updated kernel config filesHendrik Brueckner2016-06-151-0/+4
| | | | | Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/config: update default configurationHeiko Carstens2016-05-231-18/+26
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390/configs: update default configurationsHeiko Carstens2016-01-111-3/+27
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: new default configurationHeiko Carstens2015-06-251-3/+9
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update default configurationMartin Schwidefsky2015-01-221-6/+1
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update default configurationMartin Schwidefsky2014-10-271-3/+2
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: Update defconfigs which were missing CONFIG_NET.David S. Miller2014-09-241-0/+1
| | | | | | | | | Commit df568d8e ("scsi: Use 'depends' with LIBFC instead of 'select'.") removed what happened to be the only instance of 'select NET'. Defconfigs that were relying on the select now lack networking support. Signed-off-by: David S. Miller <davem@davemloft.net>
* s390: update default configurationHeiko Carstens2014-06-111-1/+7
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update defconfigsHeiko Carstens2014-03-171-0/+10
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Update default configurationMartin Schwidefsky2013-10-241-1/+3
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* s390: update defconfigHeiko Carstens2013-09-041-12/+27
| | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* s390: update defconfigHeiko Carstens2012-09-261-7/+7
| | | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge branch 'akpm' (Andrew's patch-bomb)Linus Torvalds2012-07-311-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge Andrew's second set of patches: - MM - a few random fixes - a couple of RTC leftovers * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (120 commits) rtc/rtc-88pm80x: remove unneed devm_kfree rtc/rtc-88pm80x: assign ret only when rtc_register_driver fails mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables tmpfs: distribute interleave better across nodes mm: remove redundant initialization mm: warn if pg_data_t isn't initialized with zero mips: zero out pg_data_t when it's allocated memcg: gix memory accounting scalability in shrink_page_list mm/sparse: remove index_init_lock mm/sparse: more checks on mem_section number mm/sparse: optimize sparse_index_alloc memcg: add mem_cgroup_from_css() helper memcg: further prevent OOM with too many dirty pages memcg: prevent OOM with too many dirty pages mm: mmu_notifier: fix freed page still mapped in secondary MMU mm: memcg: only check anon swapin page charges for swap cache mm: memcg: only check swap cache pages for repeated charging mm: memcg: split swapin charge function into private and public part mm: memcg: remove needless !mm fixup to init_mm when charging mm: memcg: remove unneeded shmem charge type ...
| * memcg: rename config variablesAndrew Morton2012-07-311-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sanity: CONFIG_CGROUP_MEM_RES_CTLR -> CONFIG_MEMCG CONFIG_CGROUP_MEM_RES_CTLR_SWAP -> CONFIG_MEMCG_SWAP CONFIG_CGROUP_MEM_RES_CTLR_SWAP_ENABLED -> CONFIG_MEMCG_SWAP_ENABLED CONFIG_CGROUP_MEM_RES_CTLR_KMEM -> CONFIG_MEMCG_KMEM [mhocko@suse.cz: fix missed bits] Cc: Glauber Costa <glommer@parallels.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: David Rientjes <rientjes@google.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | s390: update defconfigHeiko Carstens2012-07-261-2/+3
|/ | | | Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* s390/crypto des: add missing select statementHeiko Carstens2012-05-161-1/+0
| | | | | | | | | Add missing "select CRYPTO_DES". Fixes this: ERROR: "des_ekey" [arch/s390/crypto/des_s390.ko] undefined! Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] update default configurationMichael Holzheu2012-04-111-19/+18
| | | | | | | | Add TASKSTATS options, enable CRASH_DUMP, and regenerate defconfig file with "make savedefconfig". Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] defconfig: switch on CONFIG_DEVTMPFSHendrik Brueckner2011-10-301-1/+1
| | | | | | | | | Switching on the DEVTMPFS kernel option helpes to maintain a /dev file system early in the boot process, especially, in limited environments. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configurationMartin Schwidefsky2011-01-121-1/+15
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cleanup s390 KconfigMartin Schwidefsky2011-01-051-96/+56
| | | | | | | | Make use of def_bool and def_tristate where possible and add sensible defaults to the config symbols where applicable. This shortens the defconfig file by another ~40 lines. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* defconfig reductionSam Ravnborg2010-08-141-970/+0
| | | | | | | Use the defconfig files generated by "make savedefconfig" for remaining defconfig files. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* [S390] Update default configuration.Martin Schwidefsky2010-06-081-10/+13
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2010-04-091-10/+30
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] add support for compressed kernelsMartin Schwidefsky2010-02-261-0/+7
| | | | | | | | Add the "bzImage" compile target and the necessary code to generate compressed kernel images. The old style uncompressed "image" target is preserved, a simple make will build them both. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2010-01-041-11/+75
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Improve address space mode selection.Martin Schwidefsky2009-12-071-1/+0
| | | | | | | | | | | | | | | | | | Introduce user_mode to replace the two variables switch_amode and s390_noexec. There are three valid combinations of the old values: 1) switch_amode == 0 && s390_noexec == 0 2) switch_amode == 1 && s390_noexec == 0 3) switch_amode == 1 && s390_noexec == 1 They get replaced by 1) user_mode == HOME_SPACE_MODE 2) user_mode == PRIMARY_SPACE_MODE 3) user_mode == SECONDARY_SPACE_MODE The new kernel parameter user_mode=[primary,secondary,home] lets you choose the address space mode the user space processes should use. In addition the CONFIG_S390_SWITCH_AMODE config option is removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2009-09-221-12/+25
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* tracing: Rename FTRACE_SYSCALLS for tracepointsJosh Stone2009-08-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | s/HAVE_FTRACE_SYSCALLS/HAVE_SYSCALL_TRACEPOINTS/g s/TIF_SYSCALL_FTRACE/TIF_SYSCALL_TRACEPOINT/g The syscall enter/exit tracing is no longer specific to just ftrace, so they now have names that reflect their tie to tracepoints instead. Signed-off-by: Josh Stone <jistone@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jiaying Zhang <jiayingz@google.com> Cc: Martin Bligh <mbligh@google.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> LKML-Reference: <1251150194-1713-2-git-send-email-jistone@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* [S390] Update default configuration.Martin Schwidefsky2009-06-221-18/+54
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] update default configuration.Martin Schwidefsky2009-04-231-13/+50
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2009-02-111-27/+60
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2008-11-271-23/+51
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2008-08-211-16/+38
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2008-05-301-3/+8
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2008-04-301-41/+100
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.26Linus Torvalds2008-04-181-5/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.26: (1090 commits) [NET]: Fix and allocate less memory for ->priv'less netdevices [IPV6]: Fix dangling references on error in fib6_add(). [NETLABEL]: Fix NULL deref in netlbl_unlabel_staticlist_gen() if ifindex not found [PKT_SCHED]: Fix datalen check in tcf_simp_init(). [INET]: Uninline the __inet_inherit_port call. [INET]: Drop the inet_inherit_port() call. SCTP: Initialize partial_bytes_acked to 0, when all of the data is acked. [netdrvr] forcedeth: internal simplifications; changelog removal phylib: factor out get_phy_id from within get_phy_device PHY: add BCM5464 support to broadcom PHY driver cxgb3: Fix __must_check warning with dev_dbg. tc35815: Statistics cleanup natsemi: fix MMIO for PPC 44x platforms [TIPC]: Cleanup of TIPC reference table code [TIPC]: Optimized initialization of TIPC reference table [TIPC]: Remove inlining of reference table locking routines e1000: convert uint16_t style integers to u16 ixgb: convert uint16_t style integers to u16 sb1000.c: make const arrays static sb1000.c: stop inlining largish static functions ...
| * qeth: new qeth device driverFrank Blaschka2008-03-171-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | List of major changes and improvements: no manipulation of the global ARP constructor clean code split into core, layer 2 and layer 3 functionality better exploitation of the ethtool interface better representation of the various hardware capabilities fix packet socket support (tcpdump), no fake_ll required osasnmpd notification via udev events coding style and beautification Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | [S390] cpu topology support for s390.Heiko Carstens2008-04-171-0/+1
|/ | | | | | | | Add s390 backend so we can give the scheduler some hints about the cpu topology. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2008-03-051-5/+13
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2008-02-091-23/+64
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2007-10-221-46/+85
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] z/VM unit record device driverFrank Munzert2007-07-171-0/+1
| | | | | | | | z/VM Unit record character device driver to access VM reader, punch, and printer. Signed-off-by: Frank Munzert <munzert@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] Update default configuration.Martin Schwidefsky2007-07-171-78/+31
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] update default configuration.Martin Schwidefsky2007-05-101-106/+128
| | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] zfcpdump support.Michael Holzheu2007-04-271-0/+1
| | | | | | | | | | | | | | s390 machines provide hardware support for creating Linux dumps on SCSI disks. For creating a dump a special purpose dump Linux is used. The first 32 MB of memory are saved by the hardware before the dump Linux is booted. Via an SCLP interface, the saved memory can be accessed from Linux. This patch exports memory and registers of the crashed Linux to userspace via a debugfs file. For more information refer to Documentation/s390/zfcpdump.txt, which is included in this patch. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* [S390] Use generic bug.Heiko Carstens2007-04-271-0/+2
| | | | | | | | | | | | Generic bug implementation for s390. Will increase the value of the console output on BUG() statements since registers r0-r5,r14 will not be clobbered by a printk() call that was previously done before the illegal instruction of BUG() was hit. Also implements an architecture specific WARN_ON(). Output of that could be increased but requires common code change. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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