linux-dev/arch/s390/configs/default_defconfig, branch master

s390: rename default_defconfig to debug_defconfig

2018-04-16T08:29:35Z

The name debug_defconfig reflects what the config is actually good for and should be less confusing. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390: update defconfig

2018-04-16T08:29:34Z

Signed-off-by: Martin Schwidefsky

s390/kexec_file: Add kexec_file_load system call

2018-04-16T07:10:22Z

This patch adds the kexec_file_load system call to s390 as well as the arch specific functions common code requires to work. Loaders for the different file types will be added later. Signed-off-by: Philipp Rudo Signed-off-by: Martin Schwidefsky

s390: Remove CONFIG_HARDENED_USERCOPY

2017-11-16T12:12:21Z

When running the crash tool on a s390 live system we get a kernel panic for reading memory within the kernel image: # uname -a Linux r3545011 4.14.0-rc8-00066-g1c9dbd4615fd #45 SMP PREEMPT Fri Nov 10 16:16:22 CET 2017 s390x s390x s390x GNU/Linux # crash /boot/vmlinux-devel /dev/mem # crash> rd 0x100000 usercopy: kernel memory exposure attempt detected from 0000000000100000 () (8 bytes) ------------[ cut here ]------------ kernel BUG at mm/usercopy.c:72! illegal operation: 0001 ilc:1 [#1] PREEMPT SMP. Modules linked in: CPU: 0 PID: 1461 Comm: crash Not tainted 4.14.0-rc8-00066-g1c9dbd4615fd-dirty #46 Hardware name: IBM 2827 H66 706 (z/VM 6.3.0) task: 000000001ad10100 task.stack: 000000001df78000 Krnl PSW : 0704d00180000000 000000000038165c (__check_object_size+0x164/0x1d0) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3 Krnl GPRS: 0000000012440e1d 0000000080000000 0000000000000061 00000000001cabc0 00000000001cc6d6 0000000000000000 0000000000cc4ed2 0000000000001000 000003ffc22fdd20 0000000000000008 0000000000100008 0000000000000001 0000000000000008 0000000000100000 0000000000381658 000000001df7bc90 Krnl Code: 000000000038164c: c020004a1c4a larl %r2,cc4ee0 0000000000381652: c0e5fff2581b brasl %r14,1cc688 #0000000000381658: a7f40001 brc 15,38165a >000000000038165c: eb42000c000c srlg %r4,%r2,12 0000000000381662: eb32001c000c srlg %r3,%r2,28 0000000000381668: c0110003ffff lgfi %r1,262143 000000000038166e: ec31ff752065 clgrj %r3,%r1,2,381558 0000000000381674: a7f4ff67 brc 15,381542 Call Trace: ([<0000000000381658>] __check_object_size+0x160/0x1d0) [<000000000082263a>] read_mem+0xaa/0x130. [<0000000000386182>] __vfs_read+0x42/0x168. [<000000000038632e>] vfs_read+0x86/0x140. [<0000000000386a26>] SyS_read+0x66/0xc0. [<0000000000ace6a4>] system_call+0xc4/0x2b0. INFO: lockdep is turned off. Last Breaking-Event-Address: [<0000000000381658>] __check_object_size+0x160/0x1d0 Kernel panic - not syncing: Fatal exception: panic_on_oops With CONFIG_HARDENED_USERCOPY copy_to_user() checks in __check_object_size() if the source address is within the kernel image. When the crash tool reads from 0x100000, this check leads to the kernel BUG(). So disable the kernel config option until this bug is fixed. Corresponding bug report on LKML: https://lkml.org/lkml/2017/11/10/341 Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky

s390: update defconfig

2017-10-16T06:19:28Z

Signed-off-by: Martin Schwidefsky

s390: update defconfig

2017-06-08T13:53:48Z

Signed-off-by: Martin Schwidefsky

s390: enable ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT

2017-03-28T14:54:32Z

Deferred struct page initialization works on s390. However it makes only sense for the fake numa case, since the kthreads that initialize struct pages are started per node. Without fake numa there is just a single node and therefore no gain. However there is no reason to not enable this feature. Therefore select the config option and enable the feature in all config files. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS

2017-03-01T09:26:39Z

We have uses of CONFIG_UPROBE_EVENT and CONFIG_KPROBE_EVENT as well as CONFIG_UPROBE_EVENTS and CONFIG_KPROBE_EVENTS. Consistently use the plurals. Signed-off-by: Anton Blanchard Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: acme@kernel.org Cc: alexander.shishkin@linux.intel.com Cc: davem@davemloft.net Cc: sparclinux@vger.kernel.org Link: http://lkml.kernel.org/r/20170216060050.20866-1-anton@ozlabs.org Signed-off-by: Ingo Molnar

s390/pkey: Introduce pkey kernel module

2017-02-23T09:06:40Z

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 Signed-off-by: Martin Schwidefsky

s390: update defconfigs

2017-01-16T06:27:48Z

Signed-off-by: Heiko Carstens