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2013-05-23MIPS: Trap exception handling fixesMaciej W. Rozycki
2a0b24f56c2492b932f1aed617ae80fb23500d21 broke Trap exception handling in the standard MIPS mode. Additionally the microMIPS-mode trap code mask is wrong, as it's a 4-bit field. Here's a fix. Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5309/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22MIPS: Idle: Do address fiddlery in helper functions.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-22MIPS: Idle: Consolidate all declarations in <asm/idle.h>.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-16Revert "MIPS: Allow ASID size to be determined at boot time."David Daney
This reverts commit d532f3d26716a39dfd4b88d687bd344fbe77e390. The original commit has several problems: 1) Doesn't work with 64-bit kernels. 2) Calls TLBMISS_HANDLER_SETUP() before the code is generated. 3) Calls TLBMISS_HANDLER_SETUP() twice in per_cpu_trap_init() when only one call is needed. [ralf@linux-mips.org: Also revert the bits of the ASID patch which were hidden in the KVM merge.] Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: "Steven J. Hill" <Steven.Hill@imgtec.com> Cc: David Daney <david.daney@cavium.com> Patchwork: https://patchwork.linux-mips.org/patch/5242/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-10Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS updates from Ralf Baechle: - More work on DT support for various platforms - Various fixes that were to late to make it straight into 3.9 - Improved platform support, in particular the Netlogic XLR and BCM63xx, and the SEAD3 and Malta eval boards. - Support for several Ralink SOC families. - Complete support for the microMIPS ASE which basically reencodes the existing MIPS32/MIPS64 ISA to use non-constant size instructions. - Some fallout from LTO work which remove old cruft and will generally make the MIPS kernel easier to maintain and resistant to compiler optimization, even in absence of LTO. - KVM support. While MIPS has announced hardware virtualization extensions this KVM extension uses trap and emulate mode for virtualization of MIPS32. More KVM work to add support for VZ hardware virtualizaiton extensions and MIPS64 will probably already be merged for 3.11. Most of this has been sitting in -next for a long time. All defconfigs have been build or run time tested except three for which fixes are being sent by other maintainers. Semantic conflict with kvm updates done as per Ralf * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (118 commits) MIPS: Add new GIC clockevent driver. MIPS: Formatting clean-ups for clocksources. MIPS: Refactor GIC clocksource code. MIPS: Move 'gic_frequency' to common location. MIPS: Move 'gic_present' to common location. MIPS: MIPS16e: Add unaligned access support. MIPS: MIPS16e: Support handling of delay slots. MIPS: MIPS16e: Add instruction formats. MIPS: microMIPS: Optimise 'strnlen' core library function. MIPS: microMIPS: Optimise 'strlen' core library function. MIPS: microMIPS: Optimise 'strncpy' core library function. MIPS: microMIPS: Optimise 'memset' core library function. MIPS: microMIPS: Add configuration option for microMIPS kernel. MIPS: microMIPS: Disable LL/SC and fix linker bug. MIPS: microMIPS: Add vdso support. MIPS: microMIPS: Add unaligned access support. MIPS: microMIPS: Support handling of delay slots. MIPS: microMIPS: Add support for exception handling. MIPS: microMIPS: Floating point support. MIPS: microMIPS: Fix macro naming in micro-assembler. ...
2013-05-09Merge branch 'mti-next' of ↵Ralf Baechle
git://git.linux-mips.org/pub/scm/sjhill/linux-sjhill into mips-for-linux-next
2013-05-09Merge branch 'next/kvm' into mips-for-linux-nextRalf Baechle
2013-05-09MIPS: microMIPS: Add support for exception handling.Steven J. Hill
All exceptions must be taken in microMIPS mode, never in classic MIPS mode or the kernel falls apart. A few NOP instructions are used to maintain the correct alignment of microMIPS versions of the exception vectors. Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
2013-05-09MIPS: microMIPS: Floating point support.Leonid Yegoshin
Add logic needed to do floating point emulation in microMIPS mode. Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Signed-off-by: Steven J. Hill <Steven. Hill@imgtec.com>
2013-05-08MIPS: Allow ASID size to be determined at boot time.Steven J. Hill
Original patch by Ralf Baechle and removed by Harold Koerfgen with commit f67e4ffc79905482c3b9b8c8dd65197bac7eb508. This allows for more generic kernels since the size of the ASID and corresponding masks can be determined at run-time. This patch is also required for the new Aptiv cores and has been tested on Malta and Malta Aptiv platforms. [ralf@linux-mips.org: Added relevant part of fix https://patchwork.linux-mips.org/patch/5213/] Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-08KVM/MIPS32: KVM Guest kernel support.Sanjay Lal
Both Guest kernel and Guest Userspace execute in UM. The memory map is as follows: Guest User address space: 0x00000000 -> 0x40000000 Guest Kernel Unmapped: 0x40000000 -> 0x60000000 Guest Kernel Mapped: 0x60000000 -> 0x80000000 - Guest Usermode virtual memory is limited to 1GB. Signed-off-by: Sanjay Lal <sanjayl@kymasys.com> Cc: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-05-08Merge branch 'mips-next-3.10' of ↵Ralf Baechle
git://git.linux-mips.org/pub/scm/john/linux-john into mips-for-linux-next
2013-04-30dump_stack: unify debug information printed by show_regs()Tejun Heo
show_regs() is inherently arch-dependent but it does make sense to print generic debug information and some archs already do albeit in slightly different forms. This patch introduces a generic function to print debug information from show_regs() so that different archs print out the same information and it's much easier to modify what's printed. show_regs_print_info() prints out the same debug info as dump_stack() does plus task and thread_info pointers. * Archs which didn't print debug info now do. alpha, arc, blackfin, c6x, cris, frv, h8300, hexagon, ia64, m32r, metag, microblaze, mn10300, openrisc, parisc, score, sh64, sparc, um, xtensa * Already prints debug info. Replaced with show_regs_print_info(). The printed information is superset of what used to be there. arm, arm64, avr32, mips, powerpc, sh32, tile, unicore32, x86 * s390 is special in that it used to print arch-specific information along with generic debug info. Heiko and Martin think that the arch-specific extra isn't worth keeping s390 specfic implementation. Converted to use the generic version. Note that now all archs print the debug info before actual register dumps. An example BUG() dump follows. kernel BUG at /work/os/work/kernel/workqueue.c:4841! invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.9.0-rc1-work+ #7 Hardware name: empty empty/S3992, BIOS 080011 10/26/2007 task: ffff88007c85e040 ti: ffff88007c860000 task.ti: ffff88007c860000 RIP: 0010:[<ffffffff8234a07e>] [<ffffffff8234a07e>] init_workqueues+0x4/0x6 RSP: 0000:ffff88007c861ec8 EFLAGS: 00010246 RAX: ffff88007c861fd8 RBX: ffffffff824466a8 RCX: 0000000000000001 RDX: 0000000000000046 RSI: 0000000000000001 RDI: ffffffff8234a07a RBP: ffff88007c861ec8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8234a07a R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88007dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffff88015f7ff000 CR3: 00000000021f1000 CR4: 00000000000007f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Stack: ffff88007c861ef8 ffffffff81000312 ffffffff824466a8 ffff88007c85e650 0000000000000003 0000000000000000 ffff88007c861f38 ffffffff82335e5d ffff88007c862080 ffffffff8223d8c0 ffff88007c862080 ffffffff81c47760 Call Trace: [<ffffffff81000312>] do_one_initcall+0x122/0x170 [<ffffffff82335e5d>] kernel_init_freeable+0x9b/0x1c8 [<ffffffff81c47760>] ? rest_init+0x140/0x140 [<ffffffff81c4776e>] kernel_init+0xe/0xf0 [<ffffffff81c6be9c>] ret_from_fork+0x7c/0xb0 [<ffffffff81c47760>] ? rest_init+0x140/0x140 ... v2: Typo fix in x86-32. v3: CPU number dropped from show_regs_print_info() as dump_stack_print_info() has been updated to print it. s390 specific implementation dropped as requested by s390 maintainers. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> [tile bits] Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon bits] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-30dump_stack: consolidate dump_stack() implementations and unify their behaviorsTejun Heo
Both dump_stack() and show_stack() are currently implemented by each architecture. show_stack(NULL, NULL) dumps the backtrace for the current task as does dump_stack(). On some archs, dump_stack() prints extra information - pid, utsname and so on - in addition to the backtrace while the two are identical on other archs. The usages in arch-independent code of the two functions indicate show_stack(NULL, NULL) should print out bare backtrace while dump_stack() is used for debugging purposes when something went wrong, so it does make sense to print additional information on the task which triggered dump_stack(). There's no reason to require archs to implement two separate but mostly identical functions. It leads to unnecessary subtle information. This patch expands the dummy fallback dump_stack() implementation in lib/dump_stack.c such that it prints out debug information (taken from x86) and invokes show_stack(NULL, NULL) and drops arch-specific dump_stack() implementations in all archs except blackfin. Blackfin's dump_stack() does something wonky that I don't understand. Debug information can be printed separately by calling dump_stack_print_info() so that arch-specific dump_stack() implementation can still emit the same debug information. This is used in blackfin. This patch brings the following behavior changes. * On some archs, an extra level in backtrace for show_stack() could be printed. This is because the top frame was determined in dump_stack() on those archs while generic dump_stack() can't do that reliably. It can be compensated by inlining dump_stack() but not sure whether that'd be necessary. * Most archs didn't use to print debug info on dump_stack(). They do now. An example WARN dump follows. WARNING: at kernel/workqueue.c:4841 init_workqueues+0x35/0x505() Hardware name: empty Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.9.0-rc1-work+ #9 0000000000000009 ffff88007c861e08 ffffffff81c614dc ffff88007c861e48 ffffffff8108f50f ffffffff82228240 0000000000000040 ffffffff8234a03c 0000000000000000 0000000000000000 0000000000000000 ffff88007c861e58 Call Trace: [<ffffffff81c614dc>] dump_stack+0x19/0x1b [<ffffffff8108f50f>] warn_slowpath_common+0x7f/0xc0 [<ffffffff8108f56a>] warn_slowpath_null+0x1a/0x20 [<ffffffff8234a071>] init_workqueues+0x35/0x505 ... v2: CPU number added to the generic debug info as requested by s390 folks and dropped the s390 specific dump_stack(). This loses %ksp from the debug message which the maintainers think isn't important enough to keep the s390-specific dump_stack() implementation. dump_stack_print_info() is moved to kernel/printk.c from lib/dump_stack.c. Because linkage is per objecct file, dump_stack_print_info() living in the same lib file as generic dump_stack() means that archs which implement custom dump_stack() - at this point, only blackfin - can't use dump_stack_print_info() as that will bring in the generic version of dump_stack() too. v1 The v1 patch broke build on blackfin due to this issue. The build breakage was reported by Fengguang Wu. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> Acked-by: Vineet Gupta <vgupta@synopsys.com> Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390 bits] Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon bits] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-11MIPS: Avoid overoptimization by GCC.Ralf Baechle
Without this, it's possible that LTO will discard the calls to set_except_vector() in the probe for the DADDI overflow bug resulting in a kernel crash like this: [...] Mount-cache hash table entries: 256 Checking for the daddi bug... Integer overflow[#1]: Cpu 0 $ 0 : 0000000000000000 0000000010008ce1 0000000000000001 0000000000000000 $ 4 : 7fffffffffffedcd ffffffff81410000 0000000000000030 000000000000003f [...] There are other similar places in the kernel so we've just been lucky that GCC's been tolerant. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-04-11MIPS: Make tlb exception handler definitions and declarations match.Ralf Baechle
The code was written as it is because it's more expressive, a bit easier. But it's always been dirty, if not a bug. But we can't cheat with LTO compilers, so this results in: [...] LDFINAL vmlinux.o In file included from arch/mips/kernel/topology.c:604:0, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/kernel/traps.c:63:49: error: variable ‘handle_tlbl’ redeclared as function In file included from arch/mips/mm/page.c:310:0, from arch/mips/mm/mmap.c:208, from arch/mips/mm/init.c:641, from arch/mips/mm/gup.c:811, from arch/mips/mm/fault.c:659, from include/linux/module.h:682, from arch/mips/mm/dma-default.c:161, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:397, from arch/mips/kernel/i8253.c:538, from arch/mips/kernel/proc.c:145, from arch/mips/kernel/irq_cpu.c:129, from arch/mips/kernel/i8259.c:229, from include/uapi/linux/elf.h:251, from arch/mips/kernel/mips_ksyms.c:129, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/time.h:50, from arch/mips/kernel/cevt-r4k.c:90, from arch/mips/kernel/vdso.c:136, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:351, from arch/mips/kernel/unaligned.c:809, from arch/mips/kernel/traps.c:1720, from arch/mips/kernel/topology.c:684, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/mm/tlbex.c:1448:5: note: previously declared here In file included from arch/mips/kernel/topology.c:604:0, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/kernel/traps.c:62:49: error: variable ‘handle_tlbm’ redeclared as function In file included from arch/mips/mm/page.c:310:0, from arch/mips/mm/mmap.c:208, from arch/mips/mm/init.c:641, from arch/mips/mm/gup.c:811, from arch/mips/mm/fault.c:659, from include/linux/module.h:682, from arch/mips/mm/dma-default.c:161, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:397, from arch/mips/kernel/i8253.c:538, from arch/mips/kernel/proc.c:145, from arch/mips/kernel/irq_cpu.c:129, from arch/mips/kernel/i8259.c:229, from include/uapi/linux/elf.h:251, from arch/mips/kernel/mips_ksyms.c:129, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/time.h:50, from arch/mips/kernel/cevt-r4k.c:90, from arch/mips/kernel/vdso.c:136, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:351, from arch/mips/kernel/unaligned.c:809, from arch/mips/kernel/traps.c:1720, from arch/mips/kernel/topology.c:684, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/mm/tlbex.c:1450:5: note: previously declared here In file included from arch/mips/kernel/topology.c:604:0, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/kernel/traps.c:64:49: error: variable ‘handle_tlbs’ redeclared as function In file included from arch/mips/mm/page.c:310:0, from arch/mips/mm/mmap.c:208, from arch/mips/mm/init.c:641, from arch/mips/mm/gup.c:811, from arch/mips/mm/fault.c:659, from include/linux/module.h:682, from arch/mips/mm/dma-default.c:161, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:397, from arch/mips/kernel/i8253.c:538, from arch/mips/kernel/proc.c:145, from arch/mips/kernel/irq_cpu.c:129, from arch/mips/kernel/i8259.c:229, from include/uapi/linux/elf.h:251, from arch/mips/kernel/mips_ksyms.c:129, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/time.h:50, from arch/mips/kernel/cevt-r4k.c:90, from arch/mips/kernel/vdso.c:136, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:351, from arch/mips/kernel/unaligned.c:809, from arch/mips/kernel/traps.c:1720, from arch/mips/kernel/topology.c:684, from arch/mips/kernel/time.c:212, from arch/mips/kernel/syscall.c:300, from arch/mips/kernel/signal.c:853, from arch/mips/kernel/setup.c:1030, from arch/mips/kernel/reset.c:354, from arch/mips/kernel/ptrace.c:562, from arch/mips/kernel/process.c:770, from arch/mips/kernel/irq.c:350, from arch/mips/kernel/branch.c:321, from arch/mips/kernel/cpu-probe.c:1370, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/thread_info.h:345, from arch/mips/sgi-ip22/ip22-gio.c:660, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/sgialib.h:219, from arch/mips/sgi-ip22/ip22-reset.c:224, from /fluff/home/ralf/src/linux/lto/linux-misc/arch/mips/include/asm/paccess.h:116, from arch/mips/sgi-ip22/ip22-nvram.c:334, from include/linux/kernel_stat.h:79, from arch/mips/sgi-ip22/ip22-int.c:592, from arch/mips/sgi-ip22/ip22-hpc.c:470, from arch/mips/sgi-ip22/ip22-mc.c:135, from init/init_task.c:54, from init/calibrate.c:744, from init/noinitramfs.c:62, from init/do_mounts.c:573, from init/version.c:1009, from init/main.c:777, from :729: arch/mips/mm/tlbex.c:1449:5: note: previously declared here lto1: fatal error: errors during merging of translation units compilation terminated. lto-wrapper: /usr/bin/mips-linux-gcc returned 1 exit status /usr/lib64/gcc/mips-linux/4.7.1/../../../../mips-linux/bin/ld: lto-wrapper failed collect2: error: ld returned 1 exit status make: *** [vmlinux] Error 1 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-04-05MIPS: Fix ISA level which causes secondary cache init bypassing and moreDeng-Cheng Zhu
The commit a96102be70 introduced set_isa() where compatible ISA info is also set aside from the one gets passed in. It means, for example, 1004K will have MIPS_CPU_ISA_M32R2/M32R1/II/I flags. This leads to things like the following inappropriate: if (c->isa_level == MIPS_CPU_ISA_M32R1 || c->isa_level == MIPS_CPU_ISA_M32R2 || c->isa_level == MIPS_CPU_ISA_M64R1 || c->isa_level == MIPS_CPU_ISA_M64R2) This patch fixes it. Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-03-02Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
Pull MIPS updates from Ralf Baechle: o Add basic support for the Mediatek/Ralink Wireless SoC family. o The Qualcomm Atheros platform is extended by support for the new QCA955X SoC series as well as a bunch of patches that get the code ready for OF support. o Lantiq and BCM47XX platform have a few improvements and bug fixes. o MIPS has sent a few patches that get the kernel ready for the upcoming microMIPS support. o The rest of the series is made up of small bug fixes and cleanups that relate to various parts of the MIPS code. The biggy in there is a whitespace cleanup. After I was sent another set of whitespace cleanup patches I decided it was the time to clean the whitespace "issues" for once and and that touches many files below arch/mips/. Fix up silly conflicts, mostly due to whitespace cleanups. * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (105 commits) MIPS: Quit exporting kernel internel break codes to uapi/asm/break.h MIPS: remove broken conditional inside vpe loader code MIPS: SMTC: fix implicit declaration of set_vi_handler MIPS: early_printk: drop __init annotations MIPS: Probe for and report hardware virtualization support. MIPS: ath79: add support for the Qualcomm Atheros AP136-010 board MIPS: ath79: add USB controller registration code for the QCA955X SoCs MIPS: ath79: add PCI controller registration code for the QCA955X SoCs MIPS: ath79: add WMAC registration code for the QCA955X SoCs MIPS: ath79: register UART for the QCA955X SoCs MIPS: ath79: add QCA955X specific glue to ath79_device_reset_{set, clear} MIPS: ath79: add GPIO setup code for the QCA955X SoCs MIPS: ath79: add IRQ handling code for the QCA955X SoCs MIPS: ath79: add clock setup code for the QCA955X SoCs MIPS: ath79: add SoC detection code for the QCA955X SoCs MIPS: ath79: add early printk support for the QCA955X SoCs MIPS: ath79: fix WMAC IRQ resource assignment mips: reserve elfcorehdr mips: Make sure kernel memory is in iomem MIPS: ath79: use dynamically allocated USB platform devices ...
2013-02-01MIPS: Whitespace cleanup.Ralf Baechle
Having received another series of whitespace patches I decided to do this once and for all rather than dealing with this kind of patches trickling in forever. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-02-01MIPS: Whitespace cleanups and reformatting.Steven J. Hill
Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <sjhill@mips.com> Cc: Kevin Cernekee <cernekee@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/4781/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-21taint: add explicit flag to show whether lock dep is still OK.Rusty Russell
Fix up all callers as they were before, with make one change: an unsigned module taints the kernel, but doesn't turn off lockdep. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-12-13MIPS: Handle COP3 Unusable exception as COP1X for FP emulationMaciej W. Rozycki
Our FP emulator is hardcoded for the MIPS IV FP instruction set and does not match the FP ISA with the general ISA. However for the few MIPS IV FP instructions that use the COP1X major opcode it relies on the Coprocessor Unusable exception to be delivered as a COP1 rather than COP3 exception. This includes indexed transfer (LDXC1, etc.) and FP multiply-accumulate (MADD.D, etc.) instructions. All the MIPS I, II, III and IV processors and some newer chips that do not implement the FPU use the COP3 exception however. Therefore I believe the kernel should follow and redirect any COP3 Unusable traps to the emulator unless an actual FPU part or core is present. This is a change that implements it. Any minor opcode encodings that are not recognised as valid FP instructions are rejected by the emulator and will result in a SIGILL signal being delivered as they currently do. We do not support vendor-specific coprocessor 3 implementations supported with MIPS I and MIPS II ISA processors; we never set CP0.Status.CU3. [Ralf: On MIPS IV processors the kernel always enables the XX bit which replaces the CU3 bit off earlier architecture revisions.] If matching between the CPU and the FPU ISA is considered required one day, this can still be done in the emulator itself. I think the CpU exception dispatcher is not the right place to do this anyway, as there are further differences between MIPS I, MIPS II, MIPS III, MIPS IV and MIPS32 FP ISAs. Corresponding explanation of this implementation is included within the change itself. Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/project/linux-mips/list/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-12-13MIPS: kdump: Add supportRalf Baechle
[ralf@linux-mips.org: Original patch by Maxim Uvarov <muvarov@gmail.com> with plenty of further shining, polishing, debugging and testing by me.] Signed-off-by: Maxim Uvarov <muvarov@gmail.com> Cc: linux-mips@linux-mips.org Cc: kexec@lists.infradead.org Cc: horms@verge.net.au Patchwork: https://patchwork.linux-mips.org/patch/1025/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-23MIPS: Add CPU support for Loongson1BKelvin Cheung
Loongson 1B is a 32-bit SoC designed by Institute of Computing Technology (ICT) and the Chinese Academy of Sciences (CAS), which implements the MIPS32 release 2 instruction set. [ralf@linux-mips.org: But which is not strictly a MIPS32 compliant device which also is why it identifies itself with the Legacy Vendor ID in the PrID register. When applying the patch I shoveled some code around to keep things in alphabetical order and avoid forward declarations.] Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com> Cc: To: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: wuzhangjin@gmail.com Cc: zhzhl555@gmail.com Cc: Kelvin Cheung <keguang.zhang@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/3976/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-19MIPS: Oprofile: Fix build as a module.Ralf Baechle
When building oprofile as a module for R10000 or R7000 class processors, E9000 or MIPSxx class cores since 3572a2c37f667ee49333f8863722b8f43eac506b [MIPS: make oprofile use cp0_perfcount_irq if it is set] an ERROR: "cp0_compare_irq" [arch/mips/oprofile/oprofile.ko] undefined! error will happen. Fixed by exporting cp0_compare_irq. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-19MIPS: Fix Magic SysRq L kernel crash.Vincent Wen
show_backtrace() was passed a NULL pointer which caused paging request fail. Set to current task as other architectures (ARM, etc) do when passed a NULL task pointer. Signed-off-by: Vincent Wen <vincentwenlinux@gmail.com> Cc: linux-mips@linux-mips.org Cc: cernekee@gmail.com Patchwork: https://patchwork.linux-mips.org/patch/3524/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-19MIPS: Don't panic on 5KEc.Leonid Yegoshin
It's a bloody bog standard MIPS64R2 core with just a new PrId ID. Iow that essentially means Linux just panics because it doesn't know how to name the core. [ralf@linux-mips.org: Split original patch into several smaller patches.] Signed-off-by: Leonid Yegoshin <yegoshin@mips.com> Signed-off-by: Steven J. Hill <sjhill@mips.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3792/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-07-06MIPS: Provide a symbol for the legacy performance counter interrupt.Ralf Baechle
Based on https://patchwork.linux-mips.org/patch/3576 - but this really deserves its own patchset and the symbol should also be used :) Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-26Merge branches 'fixes-for-linus', 'generic', 'cavium', 'module.h-fixes', ↵Ralf Baechle
'next/ath79' and 'next/lantiq' into mips-for-linux-next
2012-05-16MIPS: Move cache setup to setup_arch().David Daney
commit 97ce2c88f9ad42e3c60a9beb9fca87abf3639faa (jump-label: initialize jump-label subsystem much earlier) breaks MIPS. The jump_label_init() call was moved before trap_init() which is where we initialize flush_icache_range(). In order to be good citizens, we move cache initialization earlier so that we don't jump through a null flush_icache_range function pointer when doing the jump label initialization. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3822/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-16MIPS: Make set_handler() __cpuinit.David Daney
Follow-on patches require this. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3818/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-16MIPS: Introduce board_cache_error_setup() hook.David Daney
This is used in subsequent patches. Signed-off-by: David Daney <david.daney@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3819/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-05-15MIPS: Fix several implicit uses of export.h/module.hPaul Gortmaker
These will show up as a build failure once we clean up a misuse of module.h in the mips termios header. Uses export.h: (EXPORT_SYMBOL) arch/mips/cavium-octeon/setup.c arch/mips/pmc-sierra/yosemite/setup.c arch/mips/rb532/devices.c arch/mips/sni/setup.c Uses module.h: (symbol_get/put) arch/mips/alchemy/devboards/db1200.c Uses module.h: (print_modules) arch/mips/kernel/traps.c Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3448/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-03-28Disintegrate asm/system.h for MIPSDavid Howells
Disintegrate asm/system.h for MIPS. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> cc: linux-mips@linux-mips.org
2012-02-20MIPS: traps.c: Fix typoMasanari Iida
Correct spelling of "Schedulier" to "Scheduler" in arch/mips/kernel/traps.c Signed-off-by: Masanari Iida <standby24x7@gmail.com> Cc: linux-mips@linux-mips.org Cc: trivial@kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/3354/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2012-01-14Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (119 commits) MIPS: Delete unused function add_temporary_entry. MIPS: Set default pci cache line size. MIPS: Flush huge TLB MIPS: Octeon: Remove SYS_SUPPORTS_HIGHMEM. MIPS: Octeon: Add support for OCTEON II PCIe MIPS: Octeon: Update PCI Latency timer and enable more error reporting. MIPS: Alchemy: Update cpu-feature-overrides MIPS: Alchemy: db1200: Improve PB1200 detection. MIPS: Alchemy: merge Au1000 and Au1300-style IRQ controller code. MIPS: Alchemy: chain IRQ controllers to MIPS IRQ controller MIPS: Alchemy: irq: register pm at irq init time MIPS: Alchemy: Touchscreen support on DB1100 MIPS: Alchemy: Hook up IrDA on DB1000/DB1100 net/irda: convert au1k_ir to platform driver. MIPS: Alchemy: remove unused board headers MTD: nand: make au1550nd.c a platform_driver MIPS: Netlogic: Mark Netlogic chips as SMT capable MIPS: Netlogic: Add support for XLP 3XX cores MIPS: Netlogic: Merge some of XLR/XLP wakup code MIPS: Netlogic: Add default XLP config. ... Fix up trivial conflicts in arch/mips/kernel/{perf_event_mipsxx.c, traps.c} and drivers/tty/serial/Makefile
2012-01-12treewide: convert uses of ATTRIB_NORETURN to __noreturnJoe Perches
Use the more commonly used __noreturn instead of ATTRIB_NORETURN. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Joe Perches <joe@perches.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-12treewide: remove useless NORET_TYPE macro and usesJoe Perches
It's a very old and now unused prototype marking so just delete it. Neaten panic pointer argument style to keep checkpatch quiet. Signed-off-by: Joe Perches <joe@perches.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-11Merge branches 'next/ar7', 'next/ath79', 'next/bcm63xx', 'next/bmips', ↵Ralf Baechle
'next/cavium', 'next/generic', 'next/kprobes', 'next/lantiq', 'next/perf' and 'next/raza' into mips-for-linux-next
2011-12-07MIPS: Add board_ebase_setup()Kevin Cernekee
Some systems need to relocate the MIPS exception vector base during trap initialization. Add a hook to make this possible. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2959/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Add NMI notifierKevin Cernekee
Allow the board support code to register a raw notifier callback for NMI, similar to what is done for CU2 exceptions. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2958/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-12-07MIPS: Fix up inconsistency in panic() string argument.Ralf Baechle
Panic() invokes printk() to add a \n internally, so panic arguments should not themselves end in \n. Panic invocations in arch/mips and elsewhere are inconsistently sometimes terminating in \n, sometimes not. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-11-10MIPS: ASID conflict after CPU hotplugMaksim Rayskiy
I am running SMP Linux 2.6.37-rc1 on BMIPS5000 (single core dual thread) and observe some abnormalities when doing system suspend/resume which I narrowed down to cpu hotplugging. The suspend brings the second thread processor down and then restarts it, after which I see memory corruption in userspace. I started digging and found out that problem occurs because while doing execve() the child process is getting the same ASID as the parent, which obviously corrupts parent's address space. Further digging showed that activate_mm() calls get_new_mmu_context() to get a new ASID, but at this time ASID field in entryHi is 1, and asid_cache(cpu) is 0x100 (it was just reset to ASID_FIRST_VERSION when the secondary TP was booting). So, get_new_mmu_context() increments the asid_cache(cpu) value to 0x101, and thus puts 0x01 into entryHi. The result - ASID field does not get changed as it was supposed to. My solution is very simple - do not reset asid_cache(cpu) on TP warm restart. Patchwork: https://patchwork.linux-mips.org/patch/1797/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-10-31mips: remove needless include of module.h from core kernel files.Paul Gortmaker
None of these files are using modular infrastructure, and build tests reveal that none of these files are really relying on any implicit inclusions via. module.h either. So delete them. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-01MIPS: Call oops_enter, oops_exit in dieNathan Lynch
This allows pause_on_oops and mtdoops to work. Signed-off-by: Nathan Lynch <ntl@pobox.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2810/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-09-21MIPS: Make the die_lock be rawWu Zhangjin
On preempt-rt this lock needs to be raw, so it does not get converted to a sleeping spinlock. Trying to sleep in a panic is not really desireable. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2636/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2011-07-01perf: Remove the nmi parameter from the swevent and overflow interfacePeter Zijlstra
The nmi parameter indicated if we could do wakeups from the current context, if not, we would set some state and self-IPI and let the resulting interrupt do the wakeup. For the various event classes: - hardware: nmi=0; PMI is in fact an NMI or we run irq_work_run from the PMI-tail (ARM etc.) - tracepoint: nmi=0; since tracepoint could be from NMI context. - software: nmi=[0,1]; some, like the schedule thing cannot perform wakeups, and hence need 0. As one can see, there is very little nmi=1 usage, and the down-side of not using it is that on some platforms some software events can have a jiffy delay in wakeup (when arch_irq_work_raise isn't implemented). The up-side however is that we can remove the nmi parameter and save a bunch of conditionals in fast paths. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Will Deacon <will.deacon@arm.com> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Cc: Anton Blanchard <anton@samba.org> Cc: Eric B Munson <emunson@mgebm.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David S. Miller <davem@davemloft.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/n/tip-agjev8eu666tvknpb3iaj0fg@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-18MIPS: Fix duplicate invocation of notify_die.Ralf Baechle
Initial patch by Yury Polyanskiy <ypolyans@princeton.edu>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/2373/
2011-01-18MIPS: Use C0_KScratch (if present) to hold PGD pointer.David Daney
Decide at runtime to use either Context or KScratch to hold the PGD pointer. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1876/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-12-16MIPS: Send proper signal and siginfo on FP emulator faults.David Daney
We were unconditionally sending SIGBUS with an empty siginfo on FP emulator faults. This differs from what happens when real floating point hardware would get a fault. For most faults we need to send SIGSEGV with the faulting address filled in in the struct siginfo. Reported-by: Camm Maguire <camm@maguirefamily.org> Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Cc: Camm Maguire <camm@maguirefamily.org> Patchwork: https://patchwork.linux-mips.org/patch/1727/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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