| Commit message (Collapse) | Author | Age |
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arch_ftrace_update_code and ftrace_modify_all_code are only
available if CONFIG_DYNAMIC_FTRACE is selected.
Fixes the following build problem on MIPS randconfig:
arch/mips/kernel/ftrace.c: In function 'arch_ftrace_update_code':
arch/mips/kernel/ftrace.c:31:2: error: implicit declaration of function
'ftrace_modify_all_code' [-Werror=implicit-function-declaration]
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5435/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Only an interrupt can wake the core from 'wait', enable interrupts
locally before executing 'wait'.
[ralf@linux-mips.org: This leave the race between an interrupt that's
setting TIF_NEED_RESCHEd and entering the WAIT status. but at least it's
going to bring Alchemy back from the dead, so I'm going to apply this
patch.]
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/5408/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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cputime_to_timeval() takes a struct timeval *as its second argument but
a struct compat_timeval * will be passed resulting in:
CC arch/mips/kernel/binfmt_elfn32.o
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c: In function ‘fill_prstatus’:
arch/mips/kernel/../../../fs/binfmt_elf.c:1330:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1331:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1336:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1337:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1339:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1340:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
AS arch/mips/kernel/scall64-n32.o
CC arch/mips/kernel/signal_n32.o
CC arch/mips/kernel/binfmt_elfo32.o
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c: In function ‘fill_prstatus’:
arch/mips/kernel/../../../fs/binfmt_elf.c:1330:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1331:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1336:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1337:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1339:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1340:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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arch/mips/kernel/rtlx.c: In function 'rtlx_module_init':
arch/mips/kernel/rtlx.c:523:3: error: implicit declaration of function 'set_vi_handler' [-Werror=implicit-function-declaration]
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5340/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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>
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As a relatively new ABI, N64 only had getdents syscall while other modern
architectures have getdents64.
This was noticed when Python 3.3 shifted to the latter one for aarch64.
[ralf@linux-mips.org: The history of getdents64 is a little complicated.
Commit 1a1d77dd589de5a567fa95e36aa6999c704ceca4 [Merge with 2.4.0-test7.]
added N64 getdents(2) to arch/mips64/kernel/scall_64.S as syscall 5213,
then dropped again in 578720675c44e54e8aa7c68f6dce59ed37ce3d3b [Overhaul
of the 64-bit syscall interface. Now heritage free.] for 2.5.18 in 2002.]
Signed-off-by: Aron Xu <aron@debian.org>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5285/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Fix to check double free of insn_slot at arch_remove_kprobe
as other arches do.
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: Maneesh Soni <manesoni@cisco.com>
Cc: Victor Kamensky <kamensky@cisco.com>
Cc: linux-mips@linux-mips.org
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: yrl.pp-manager.tt@hitachi.com
Cc: systemtap@sourceware.org
Patchwork: https://patchwork.linux-mips.org/patch/5293/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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local_irq_enable() may expand into very different code, so it rather should
stay in C. Also this keeps the assembler code size constant which keeps
the rollback code simple. So it's best to split r4k_wait into two parts,
one C and one assembler.
Finally add the local_irq_enable() to r4k_wait to ensure the WAIT
instruction in __r4k_wait() will work properly.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The generic idle loop has already disabled interrupts so this is redundant.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Without this, the
WARN_ON_ONCE(irqs_disabled());
in the idle loop will be triggered.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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schedule_mfi is supposed to be extracted from schedule(), and
is used in thread_saved_pc and get_wchan.
But, after optimization, schedule() is reduced to a sibling
call to __schedule(), and no real frame info can be extracted.
One solution is to compile schedule() with -fno-omit-frame-pointer
and -fno-optimize-sibling-calls, but that will incur performance
degradation.
Another solution is to extract info from the real scheduler,
__schedule, and this is the approache adopted here.
This patch reads the __schedule address by either following
the 'j' call in schedule if KALLSYMS is disabled or by using
kallsyms_lookup_name to lookup __schedule if KALLSYMS is
available, then, extracts schedule_mfi from __schedule frame info.
This patch also fixes the "Can't analyze schedule() prologue"
warning at boot time.
Signed-off-by: Tony Wu <tung7970@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5237/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Given a function, get_frame_info() analyzes its instructions
to figure out frame size and return address. get_frame_info()
works as follows:
1. analyze up to 128 instructions if the function size is unknown
2. search for 'addiu/daddiu sp,sp,-immed' for frame size
3. search for 'sw ra,offset(sp)' for return address
4. end search when it sees jr/jal/jalr
This leads to an issue when the given function is a sibling
call, example shown as follows.
801ca110 <schedule>:
801ca110: 8f820000 lw v0,0(gp)
801ca114: 8c420000 lw v0,0(v0)
801ca118: 080726f0 j 801c9bc0 <__schedule>
801ca11c: 00000000 nop
801ca120 <io_schedule>:
801ca120: 27bdffe8 addiu sp,sp,-24
801ca124: 3c028022 lui v0,0x8022
801ca128: afbf0014 sw ra,20(sp)
In this case, get_frame_info() cannot properly detect schedule's
frame info, and eventually returns io_schedule's instead.
This patch adds 'j' to the end search condition to workaround
sibling call cases.
Signed-off-by: Tony Wu <tung7970@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5236/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This patch fixes crash_dump.c build error. Build error logs are as follow.
arch/mips/kernel/crash_dump.c: In function 'kdump_buf_page_init':
arch/mips/kernel/crash_dump.c:67: error: implicit declaration of function 'kmalloc'
arch/mips/kernel/crash_dump.c:67: error: assignment makes pointer from integer without a cast
Signed-off-by: EunBong Song <eunb.song@samsung.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5238/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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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>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull stray syscall bits from Al Viro:
"Several syscall-related commits that were missing from the original"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
switch compat_sys_sysctl to COMPAT_SYSCALL_DEFINE
unicore32: just use mmap_pgoff()...
unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE
x86, vm86: fix VM86 syscalls: use SYSCALL_DEFINEx(...)
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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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.
...
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git://git.linux-mips.org/pub/scm/sjhill/linux-sjhill into mips-for-linux-next
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Add new clockevent driver that uses the counter present on the MIPS
Global Interrupt Controller.
Signed-off-by: Raghu Gandham <Raghu.Gandham@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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Various whitespace and #ifdef removals for GIC and R4K clocksources.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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Reorganize some of the GIC clocksource driver code. Below is a list of
the various changes.
* No longer select CSRC_GIC by default for Malta platform.
* Limit choice for either the GIC or R4K clocksource, not both.
* Change location in Makefile.
* Created new 'gic_read_count' function in common 'irq-gic.c' file.
* Change 'git_hpt_read' function in 'csrc-gic.c' to use new function.
* Surround GIC specific code in Malta platform code with #ifdef's.
* Only initialize the GIC clocksource if it was selected. Original
code called it unconditionally if a GIC was found.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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Move the global variable 'gic_frequency' to be defined in the file
'arch/mips/kernel/irq-gic.c' instead of defining it individually
for each platform making use of the GIC. Also change the type to
be an unsigned integer instead of signed.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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Move the global variable 'gic_present' to be defined in the file
'arch/mips/kernel/irq-gic.c' instead of defining it individually
for each platform making use of the GIC. Also change the type to
be an unsigned integer instead of signed.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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Add logic needed to handle unaligned accesses in MIPS16e mode.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
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Add logic needed to properly calculate exceptions for delay slots
when in MIPS16e mode.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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This adds the option to build the Linux kernel using only the
microMIPS ISA. The resulting kernel binary is, at a minimum,
20% smaller than using the MIPS32R2 ISA.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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Support vdso in microMIPS mode.
Signed-off-by: Douglas Leung <Douglas.Leung@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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Add logic needed to handle unaligned accesses in microMIPS mode.
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
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Add logic needed to properly calculate exceptions for delay slots
when in microMIPS mode.
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
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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>
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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>
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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>
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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>
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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>
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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>
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git://git.linux-mips.org/pub/scm/john/linux-john into mips-for-linux-next
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Add a generic way of detecting the available RAM. This function is based on the
implementation already used by ath79.
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5178/
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Previously this functionality was only available to users of the mips_machine
api. Moving the code to prom.c allows us to also add a OF wrapper.
Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5164/
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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>
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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>
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Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull VFS updates from Al Viro,
Misc cleanups all over the place, mainly wrt /proc interfaces (switch
create_proc_entry to proc_create(), get rid of the deprecated
create_proc_read_entry() in favor of using proc_create_data() and
seq_file etc).
7kloc removed.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits)
don't bother with deferred freeing of fdtables
proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h
proc: Make the PROC_I() and PDE() macros internal to procfs
proc: Supply a function to remove a proc entry by PDE
take cgroup_open() and cpuset_open() to fs/proc/base.c
ppc: Clean up scanlog
ppc: Clean up rtas_flash driver somewhat
hostap: proc: Use remove_proc_subtree()
drm: proc: Use remove_proc_subtree()
drm: proc: Use minor->index to label things, not PDE->name
drm: Constify drm_proc_list[]
zoran: Don't print proc_dir_entry data in debug
reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show()
proc: Supply an accessor for getting the data from a PDE's parent
airo: Use remove_proc_subtree()
rtl8192u: Don't need to save device proc dir PDE
rtl8187se: Use a dir under /proc/net/r8180/
proc: Add proc_mkdir_data()
proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h}
proc: Move PDE_NET() to fs/proc/proc_net.c
...
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Don't use create_proc_read_entry() as that is deprecated, but rather use
proc_create_data() and seq_file instead.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Ralf Baechle <ralf@linux-mips.org>
cc: linux-mips@linux-mips.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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