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2010-04-01microblaze: Add .type and .size to ASM functionsMichal Simek
Cachegrind analysis need this fix to be able to log asm functions. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Fix TLB macrosMichal Simek
To be able to do trace TLB operations. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Use instruction with delay slotMichal Simek
Sync labels. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Remove additional resr and rear loadingMichal Simek
RESR and REAR uses the same regs in whole file. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Change register usage for ESR and EARMichal Simek
This change synchronize register usage in code. ESR = R4 EAR = R3 Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Prepare work for optimization in exception codeMichal Simek
Any sync branch must follow mts instructions not mfs. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Add DEBUG optionMichal Simek
Disable debug option in asm code. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Support systems without lmb bramMichal Simek
When the system has no lmb bram, main memory should be start from zero because of microblaze vectors. DTS fragment could look like: DDR2_SDRAM: memory@0 { device_type = "memory"; reg = < 0x0 0x10000000 >; } ; Then you have to setup CONFIG_KERNEL_BASE_ADDR=0 which caused that kernel physical start address will be zero. On reset vector place will be jump to 0x100 and on 0x100 starts kernel text. You have to solve how to load the kernel before cpu starts. Tested with XMD. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Sync strlen, strnlen, copy_to/from_userMichal Simek
Last sync. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Unify __copy_tofrom_userMichal Simek
Move to generic location. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Move functions to generic locationMichal Simek
noMMU and MMU use them. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Fix put_user for noMMUMichal Simek
Here is small regression on dhrystone tests and I think that on all benchmarking tests. It is due to better checking mechanism in put_user macro Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Fix get_user macro for noMMUMichal Simek
Use unified version. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix clear_user for noMMU kernelMichal Simek
Previous patches fixed only MMU version and this is the first patch for noMMU kernel Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Fix strncpy_from_user functionMichal Simek
Generic implementation for noMMU and MMU version Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix copy_from_user macroMichal Simek
copy_from_user macro also use copy_tofrom_user function Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: copy_to_user unificationMichal Simek
noMMU and MMU kernel will use copy copy_tofrom_user asm implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: sync put/get/clear_user macrosMichal Simek
Add macro description and resort. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix put_user and get_user macrosMichal Simek
Use FIXUP macros and resort them. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix __get_user_asm macroMichal Simek
It is used __FIXUP_SECTION and __EX_TABLE_SECTION macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix clean user macroMichal Simek
This is the first patch which does uaccess unification. I choosed to do several patches to be able to use bisect in future if any fault happens. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: move noMMU __range_ok function to uaccess.hMichal Simek
The same noMMU and MMU functions should be placed in one file. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Move exception_table_entry upwardMichal Simek
Just sort to be able remove whole block. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Remove segment.hMichal Simek
I would like to use asm-generic uaccess.h where are segment macros defined. This is just first step. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Remove memset in free_init_pagesMichal Simek
We don't need to do it. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Makefile cleanupsArun Bhanu
If CONFIG_INITRAMFS_SOURCE is set, "scripts/gen_initramfs_list.sh" checks if the cpio image exists. Remove the duplicate check from the Makefile. Remove the "clean-kernel" variable which is unused in the Makefile and is not used by the Kbuild. Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Fix Makefile to delete build generated filesArun Bhanu
'make clean' does not to delete the following build generated file: arch/microblaze/boot/linux.bin.ub 'make mrproper' does not to delete the following build generated files: arch/microblaze/boot/simpleImage.* Fix the Makefile to delete these build generated files. See [1] for a discussion on why simpleImage.* files are deleted with 'make mrproper' and not with 'make clean'. [1] http://lkml.org/lkml/2010/3/12/96 Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Add a missing single quote to make 'make help' happyArun Bhanu
'make ARCH=microblaze help' fails with the following error due to a missing single quote. /bin/sh: -c: line 0: unexpected EOF while looking for matching `'' /bin/sh: -c: line 1: syntax error: unexpected end of file make: *** [help] Error 2 Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Fix "kstack=" parsingSteven J. Magnani
The "kstack=" command line parameter is not parsed correctly. All proper values are interpreted as zero. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01x86,kgdb: Always initialize the hw breakpoint attributeJason Wessel
It is required to call hw_breakpoint_init() on an attr before using it in any other calls. This fixes the problem where kgdb will sometimes fail to initialize on x86_64. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: 2.6.33 <stable@kernel.org> LKML-Reference: <1269975907-27602-1-git-send-email-jason.wessel@windriver.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2010-04-01perf: Use hot regs with software sched switch/migrate eventsFrederic Weisbecker
Scheduler's task migration events don't work because they always pass NULL regs perf_sw_event(). The event hence gets filtered in perf_swevent_add(). Scheduler's context switches events use task_pt_regs() to get the context when the event occured which is a wrong thing to do as this won't give us the place in the kernel where we went to sleep but the place where we left userspace. The result is even more wrong if we switch from a kernel thread. Use the hot regs snapshot for both events as they belong to the non-interrupt/exception based events family. Unlike page faults or so that provide the regs matching the exact origin of the event, we need to save the current context. This makes the task migration event working and fix the context switch callchains and origin ip. Example: perf record -a -e cs Before: 10.91% ksoftirqd/0 0 [k] 0000000000000000 | --- (nil) perf_callchain perf_prepare_sample __perf_event_overflow perf_swevent_overflow perf_swevent_add perf_swevent_ctx_event do_perf_sw_event __perf_sw_event perf_event_task_sched_out schedule run_ksoftirqd kthread kernel_thread_helper After: 23.77% hald-addon-stor [kernel.kallsyms] [k] schedule | --- schedule | |--60.00%-- schedule_timeout | wait_for_common | wait_for_completion | blk_execute_rq | scsi_execute | scsi_execute_req | sr_test_unit_ready | | | |--66.67%-- sr_media_change | | media_changed | | cdrom_media_changed | | sr_block_media_changed | | check_disk_change | | cdrom_open v2: Always build perf_arch_fetch_caller_regs() now that software events need that too. They don't need it from modules, unlike trace events, so we keep the EXPORT_SYMBOL in trace_event_perf.c Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net>
2010-03-31sparc: Fix regset register window handling.David S. Miller
We have to adjust 'reg_window' down by 16 becuase the 'pos' iterator we'll use to index into the stack slots will be between 16 and 32. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-31x86: Make e820_remove_range to handle all covered caseYinghai Lu
Rusty found on lguest with trim_bios_range, max_pfn is not right anymore, and looks e820_remove_range does not work right. [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] LGUEST: 0000000000000000 - 0000000004000000 (usable) [ 0.000000] Notice: NX (Execute Disable) protection missing in CPU or disabled in BIOS! [ 0.000000] DMI not present or invalid. [ 0.000000] last_pfn = 0x3fa0 max_arch_pfn = 0x100000 [ 0.000000] init_memory_mapping: 0000000000000000-0000000003fa0000 root cause is: the e820_remove_range doesn't handle the all covered case. e820_remove_range(BIOS_START, BIOS_END - BIOS_START, ...) produces a bogus range as a result. Make it match e820_update_range() by handling that case too. Reported-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Tested-by: Rusty Russell <rusty@rustcorp.com.au> LKML-Reference: <4BB18E55.6090903@kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2010-03-30x86-32, resume: do a global tlb flush in S4 resumeShaohua Li
Colin King reported a strange oops in S4 resume code path (see below). The test system has i5/i7 CPU. The kernel doesn't open PAE, so 4M page table is used. The oops always happen a virtual address 0xc03ff000, which is mapped to the last 4k of first 4M memory. Doing a global tlb flush fixes the issue. EIP: 0060:[<c0493a01>] EFLAGS: 00010086 CPU: 0 EIP is at copy_loop+0xe/0x15 EAX: 36aeb000 EBX: 00000000 ECX: 00000400 EDX: f55ad46c ESI: 0f800000 EDI: c03ff000 EBP: f67fbec4 ESP: f67fbea8 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 ... ... CR2: 00000000c03ff000 Tested-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Shaohua Li <shaohua.li@intel.com> LKML-Reference: <20100305005932.GA22675@sli10-desk.sh.intel.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: <stable@kernel.org>
2010-03-30Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Do not free zero sized per cpu areas x86: Make sure free_init_pages() frees pages on page boundary x86: Make smp_locks end with page alignment
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30x86: don't include slab.h from arch/x86/include/asm/pgtable_32.hTejun Heo
Including slab.h from x86 pgtable_32.h creates a troublesome dependency chain w/ ftrace enabled. The following chain leads to inclusion of pgtable_32.h from define_trace.h. trace/define_trace.h trace/ftrace.h linux/ftrace_event.h linux/ring_buffer.h linux/mm.h asm/pgtable.h asm/pgtable_32.h slab.h itself defines trace hooks via linux/sl[aou]b_def.h linux/kmemtrace.h trace/events/kmem.h If slab.h is not included before define_trace.h is included, this leads to duplicate definitions of kmemtrace hooks or other include dependency problems. pgtable_32.h doesn't need slab.h to begin with. Don't include it from there. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com>
2010-03-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Properly truncate pt_regs framepointer in perf callback. arch/sparc/kernel: Use set_cpus_allowed_ptr sparc: Fix use of uid16_t and gid16_t in asm/stat.h
2010-03-29sparc64: Properly truncate pt_regs framepointer in perf callback.David S. Miller
For 32-bit processes, we save the full 64-bits of the regs in pt_regs. But unlike when the userspace actually does load and store instructions, the top 32-bits don't get automatically truncated by the cpu in kernel mode (because the kernel doesn't execute with PSTATE_AM address masking enabled). So we have to do it by hand. Reported-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-29x86: Make sure free_init_pages() frees pages on page boundaryYinghai Lu
When CONFIG_NO_BOOTMEM=y, it could use memory more effiently, or in a more compact fashion. Example: Allocated new RAMDISK: 00ec2000 - 0248ce57 Move RAMDISK from 000000002ea04000 - 000000002ffcee56 to 00ec2000 - 0248ce56 The new RAMDISK's end is not page aligned. Last page could be shared with other users. When free_init_pages are called for initrd or .init, the page could be freed and we could corrupt other data. code segment in free_init_pages(): | for (; addr < end; addr += PAGE_SIZE) { | ClearPageReserved(virt_to_page(addr)); | init_page_count(virt_to_page(addr)); | memset((void *)(addr & ~(PAGE_SIZE-1)), | POISON_FREE_INITMEM, PAGE_SIZE); | free_page(addr); | totalram_pages++; | } last half page could be used as one whole free page. So page align the boundaries. -v2: make the original initramdisk to be aligned, according to Johannes, otherwise we have the chance to lose one page. we still need to keep initrd_end not aligned, otherwise it could confuse decompressor. -v3: change to WARN_ON instead, suggested by Johannes. -v4: use PAGE_ALIGN, suggested by Johannes. We may fix that macro name later to PAGE_ALIGN_UP, and PAGE_ALIGN_DOWN Add comments about assuming ramdisk start is aligned in relocate_initrd(), change to re get ramdisk_image instead of save it to make diff smaller. Add warning for wrong range, suggested by Johannes. -v6: remove one WARN() We need to align beginning in free_init_pages() do not copy more than ramdisk_size, noticed by Johannes Reported-by: Stanislaw Gruszka <sgruszka@redhat.com> Tested-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1269830604-26214-3-git-send-email-yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-29x86: Make smp_locks end with page alignmentYinghai Lu
Fix: ------------[ cut here ]------------ WARNING: at arch/x86/mm/init.c:342 free_init_pages+0x4c/0xfa() free_init_pages: range [0x40daf000, 0x40db5c24] is not aligned Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.34-rc2-tip-03946-g4f16b23-dirty #50 Call Trace: [<40232e9f>] warn_slowpath_common+0x65/0x7c [<4021c9f0>] ? free_init_pages+0x4c/0xfa [<40881434>] ? _etext+0x0/0x24 [<40232eea>] warn_slowpath_fmt+0x24/0x27 [<4021c9f0>] free_init_pages+0x4c/0xfa [<40881434>] ? _etext+0x0/0x24 [<40d3f4bd>] alternative_instructions+0xf6/0x100 [<40d3fe4f>] check_bugs+0xbd/0xbf [<40d398a7>] start_kernel+0x2d5/0x2e4 [<40d390ce>] i386_start_kernel+0xce/0xd5 ---[ end trace 4eaa2a86a8e2da22 ]--- Comments in vmlinux.lds.S already said: | /* | * smp_locks might be freed after init | * start/end must be page aligned | */ Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: David Miller <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1269830604-26214-2-git-send-email-yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-29frv/chris: fix lines with a missing semicolonsDavid Howells
Commit b26b2d494b659f9 ("resource/PCI: align functions now return start of resource") added lines with missing semicolons. Add the missing semicolons to the FRV and CRIS arch code. Signed-off-by: David Howells <dhowells@redhat.com> Cc: linux@dominikbrodowski.net Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-29ARM: 6006/1: ARM: Use the correct NOP size in memmove for Thumb-2 kernel buildsCatalin Marinas
When compiling the kernel to Thumb-2, using a 16-bit NOP in the memmove() implementation causes the preceding ADD PC instruction to branch incorrectly in the middle of a 32-bit LDR or STR instruction. The memmove() code is now similar to the memcpy() template. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-29ARM: 6005/1: arm: kprobes: fix register corruption with jprobesMika Westerberg
Current implementation of jprobes allocates empty pt_regs from the stack which is then passed to kprobe_handler() and eventually to singlestep(). Now when instruction being simulated is STMFD (like in normal function prologues without CONFIG_FRAME_POINTER), stores using SP actually write over top of the fabricated pt_regs structure. This can be reproduced for example by using LKDTM module: # modprobe lkdtm # mount -t debugfs none /sys/kernel/debug # echo PANIC > /sys/kernel/debug/provoke-crash/INT_HW_IRQ_EN after this, it fails with corrupted registers (before the requested crash would occur): lkdtm: Crash point INT_HW_IRQ_EN of type PANIC hit, trigger in 9 rounds lkdtm: Crash point INT_HW_IRQ_EN of type PANIC hit, trigger in 8 rounds Internal error: Oops - undefined instruction: 0 [#1] last sysfs file: /sys/devices/platform/serial8250.0/sleep_timeout Modules linked in: lkdtm CPU: 0 Not tainted (2.6.34-rc2 #69) PC is at irq_desc+0x1638/0xeeb0 LR is at 0x25 pc : [<c050b428>] lr : [<00000025>] psr: c80a0013 sp : ce94bd60 ip : c050b3e8 fp : a0000013 r10: c0aa453c r9 : cf5d4000 r8 : ce9a1822 r7 : c050b424 r6 : 00000025 r5 : c039d8f8 r4 : c050b3e8 r3 : 00000001 r2 : cf4d0440 r1 : c039d8f8 r0 : 00000020 Flags: NZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 10c5387d Table: 8e804019 DAC: 00000015 Process sh (pid: 496, stack limit = 0xce94a2e8) Stack: (0xce94bd60 to 0xce94c000) [...] Code: 000002cd 00000000 00000000 00000001 (dead4ead) ---[ end trace 2b46d5f2b682f370 ]--- Kernel panic - not syncing: Fatal exception in interrupt This patch allocates enough space (2 * sizeof(struct pt_regs)) from the stack to prevent such corruption. Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com> Acked-by: Nicolas Pitre <nico@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-29ARM: 6001/1: removing compilation warning comming from clkdev.hviresh kumar
clkdev.h is using struct device *. Due to this compilation warning is comming. Removing this warning. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-29ARM: 6000/1: removing compilation warning comming from <asm/irq.h>viresh kumar
irq.h is using struct pt_regs *. Due to this compilation warning is comming. Removing this warning by adding declaration of struct pt_regs. Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-03-29sh: Enable the mmu in start_secondary()Matt Fleming
For the boot, enable_mmu() is called from setup_arch() but we don't call setup_arch() for any of the other cpus. So turn on the non-boot cpu's mmu inside of start_secondary(). I noticed this bug on an SMP board when trying to map I/O memory (smsc911x registers) into the kernel address space. Since the Address Translation bit in MMUCR wasn't set, accessing the virtual address where the smsc911x registers were supposedly mapped actually performed a physical address access. Signed-off-by: Matt Fleming <matt@console-pimps.org> Cc: stable@kernel.org Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-29sh: Fix FDPIC binary loaderAndrew Stubbs
Ensure that the aux table is properly initialized, even when optional features are missing. Without this, the FDPIC loader did not work. Signed-off-by: Andrew Stubbs <ams@codesourcery.com> Cc: stable@kernel.org Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-29arch/sh/kernel: Use set_cpus_allowed_ptrJulia Lawall
Use set_cpus_allowed_ptr rather than set_cpus_allowed. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E1,E2; @@ - set_cpus_allowed(E1, cpumask_of_cpu(E2)) + set_cpus_allowed_ptr(E1, cpumask_of(E2)) @@ expression E; identifier I; @@ - set_cpus_allowed(E, I) + set_cpus_allowed_ptr(E, &I) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-03-29sh: Update ecovec_defconfigYusuke Goda
Signed-off-by: Yusuke Goda <goda.yusuke@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>