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Author SHA1 Message Date
Steven J. Hill
36a29af4be MIPS: malta: Move defines of reset registers and values. 
Remove usage of 'include/asm/mips-boards/generic.h' header file.
Instead, move the defines for SOFTRES_REG and GORESET local to
the platform file.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5455/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:01 +02:00
Steven J. Hill
2ddbc4e2f9 MIPS: sead3: Fix ability to perform a soft reset. 
The soft reset register address and reset value to be written are
incorrect for the SEAD-3 platform. This patch fixes them such that
the SEAD-3 can actually perform a soft reset instead of causing an
exception. Also remove usage of 'include/asm/mips-boards/generic.h'
header file.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5454/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:01 +02:00
Aaro Koskinen
2f963bfbd8 MIPS: Loongson: Fix random early boot hang 
Some Loongson boards (e.g. Lemote FuLoong mini-PC) use ISA/southbridge
device (CS5536 general purpose timer) for the timer interrupt. It starts
running early and is already enabled during the PCI configuration,
during which there is a small window in pci_read_base() when the register
access is temporarily disabled. If the timer interrupts at this point,
the system will hang. Fix this by adding a fixup that keeps the register
access always enabled.

The hang the patch fixes usually looks like this:

[    0.844000] pci 0000:00:0e.0: [1022:2090] type 00 class 0x060100
[    0.848000] pci 0000:00:0e.0: reg 10: [io  0xb410-0xb417]
[    0.852000] pci 0000:00:0e.0: reg 14: [io  0xb000-0xb0ff]
[    0.856000] pci 0000:00:0e.0: reg 18: [io  0xb380-0xb3bf]
[   28.140000] BUG: soft lockup - CPU#0 stuck for 23s! [swapper:1]
[   28.140000] Modules linked in:
[   28.140000] irq event stamp: 37965
[   28.140000] hardirqs last  enabled at (37964): [<ffffffff80204c0c>] restore_partial+0x6c/0x13c
[   28.140000] hardirqs last disabled at (37965): [<ffffffff80204f8c>] handle_int+0x144/0x15c
[   28.140000] softirqs last  enabled at (24316): [<ffffffff802381f4>] __do_softirq+0x1cc/0x258
[   28.140000] softirqs last disabled at (24327): [<ffffffff80238420>] do_softirq+0xc8/0xd0
[   28.140000] Cpu 0
[   28.140000] $ 0   : 0000000000000000 00000000140044e1 980000009f090000 0000000000000001
[   28.140000] $ 4   : 980000009f090000 0000000000000000 0000000000000100 03b7fff87fbde011
[   28.140000] $ 8   : ffffffff812b1928 000000000001e000 043ffff87fbde011 fffffff87fbde011
[   28.140000] $12   : 000000000000000e ffffffff807a0000 0000000000000698 0000000000000000
[   28.140000] $16   : 0000000000000002 ffffffff81055e20 ffffffff80786810 0000000000000000
[   28.140000] $20   : 000000000000000a ffffffff807bc244 ffffffff807e6350 ffffffff80770000
[   28.140000] $24   : 0000000000000d80 00000000fffedbe0
[   28.140000] $28   : 980000009f07c000 980000009f07fa10 ffffffff81050000 ffffffff802380f8
[   28.140000] Hi    : 0000000000d0fc00
[   28.140000] Lo    : 0000000000f82b40
[   28.140000] epc   : ffffffff8023810c __do_softirq+0xe4/0x258
[   28.140000]     Not tainted
[   28.140000] ra    : ffffffff802380f8 __do_softirq+0xd0/0x258
[   28.140000] Status: 140044e3    KX SX UX KERNEL EXL IE
[   28.140000] Cause : 10008400
[   28.140000] PrId  : 00006303 (ICT Loongson-2)

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/4958/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:01 +02:00
David Daney
d949b4fe6d MIPS: Octeon: Don't clobber bootloader data structures. 
Commit abe77f90dc (MIPS: Octeon: Add kexec and kdump support) added a
bootmem region for the kernel image itself.  The problem is that this
is rounded up to a 0x100000 boundary, which is memory that may not be
owned by the kernel.  Depending on the kernel's configuration based
size, this 'extra' memory may contain data passed from the bootloader
to the kernel itself, which if clobbered makes the kernel crash in
various ways.

The fix: Quit rounding the size up, so that we only use memory
assigned to the kernel.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: <stable@vger.kernel.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5449/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:01 +02:00
Ralf Baechle
4f675e8a6b MIPS: IP27: Fix build error if CONFIG_PCI=y and CONFIG_NUMA disabled. 
Then <asm-generic/topology.h> will define cpp macro as default definition
for pcibus_to_node resulting in:

  CC      arch/mips/pci/pci-ip27.o
arch/mips/pci/pci-ip27.c:220:7: error: expected identifier or ‘(’ before ‘void’
arch/mips/pci/pci-ip27.c:220:12: error: expected ‘)’ before ‘(’ token
make[1]: *** [arch/mips/pci/pci-ip27.o] Error 1

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:01 +02:00
Ralf Baechle
73ec78b06e MIPS: IP27: Fix build errors with CONFIG_PCI disabled. 
LD      init/built-in.o
arch/mips/built-in.o: In function `xtalk_probe_node':
(.cpuinit.text+0x67c): undefined reference to `bridge_probe'
arch/mips/built-in.o: In function `xtalk_probe_node':
(.cpuinit.text+0x7d8): undefined reference to `bridge_probe'

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:00 +02:00
Ralf Baechle
8ea2b8b605 MIPS: IP27: Fix build errors with CONFIG_PCI disabled. 
LD      init/built-in.o
arch/mips/built-in.o: In function `startup_bridge_irq':
ip27-irq.c:(.text+0x434): undefined reference to `irq_to_slot'
ip27-irq.c:(.text+0x43c): undefined reference to `irq_to_slot'
ip27-irq.c:(.text+0x460): undefined reference to `irq_to_bridge'
ip27-irq.c:(.text+0x464): undefined reference to `irq_to_bridge'
arch/mips/built-in.o: In function `shutdown_bridge_irq':
ip27-irq.c:(.text+0x564): undefined reference to `irq_to_bridge'
ip27-irq.c:(.text+0x56c): undefined reference to `irq_to_bridge'
ip27-irq.c:(.text+0x5a0): undefined reference to `irq_to_slot'
ip27-irq.c:(.text+0x5a4): undefined reference to `irq_to_slot'

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:00 +02:00
Ralf Baechle
28963b1e20 MIPS: IP27: Fix build error with CONFIG_MAPPED_KERNEL 
Some of the TLB bit definitions in <asm/pgtable-bits.h> have become rather
complex and are no longer usable from assembler resulting in an
explosion like this:

  AS      arch/mips/kernel/head.o
arch/mips/kernel/head.S: Assembler messages:
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: Illegal operands `li $12,(((1<<((cpu_has_rixi?(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1))))+1:(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))))+1))|(1<<(((cpu_has_rixi?(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1))))+1:(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))))+1)+1))|(5<<(((((cpu_has_rixi?(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1))))+1:(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))))+1)+1)+1)+1)))>>6)'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: missing ')'
arch/mips/kernel/head.S:147: Error: Illegal operands `li $12,(((1<<((cpu_has_rixi?(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1))))+1:(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))))+1))|(1<<(((cpu_has_rixi?(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1))))+1:(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))))+1)+1))|(1<<((((cpu_has_rixi?(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1))))+1:(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))))+1)+1)+1))|(5<<(((((cpu_has_rixi?(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1))))+1:(cpu_has_rixi?((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))+1:((((((cpu_has_rixi?(0):(0)+1)+1)+1)+1)))))+1)+1)+1)+1)))>>6)'
make[2]: *** [arch/mips/kernel/head.o] Error 1

Since now MAPPED_KERNEL_SETUP_TLB is in platform-specific code it's safe
to hardcode the TLB bits there.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:00 +02:00
Ralf Baechle
23946ef165 MIPS: Move gas macro MAPPED_KERNEL_SETUP_TLB to IP27-specific code. 
It's IP27-specific and can only cause trouble in head.S.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-21 18:07:00 +02:00
Ralf Baechle
68651ff637 MIPS: Octeon: Fix build error if CONFIG_MTD=n 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-20 16:20:44 +02:00
David Daney
368b062509 MIPS: Octeon: Fix build error if CONFIG_BUG=n 
CC      init/do_mounts.o
In file included from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/dma-mapping.h:10:0,
                 from include/linux/dma-mapping.h:76,
                 from include/linux/skbuff.h:33,
                 from include/linux/icmpv6.h:4,
                 from include/linux/ipv6.h:59,
                 from include/net/ipv6.h:16,
                 from include/linux/sunrpc/clnt.h:26,
                 from include/linux/nfs_fs.h:30,
                 from init/do_mounts.c:30:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_map_dma_mem’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:24:1: warning: no return statement in function returning non-void [-Wreturn-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_map_dma_mem_page’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:30:1: warning: no return statement in function returning non-void [-Wreturn-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_addr_to_phys’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:36:1: warning: no return statement in function returning non-void [-Wreturn-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_supported’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:47:1: warning: no return statement in function returning non-void [-Wreturn-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_mapping_error’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:63:1: warning: no return statement in function returning non-void [-Wreturn-type]
  LD      init/mounts.o
  CC      init/init_task.o
In file included from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/dma-mapping.h:10:0,
                 from include/linux/dma-mapping.h:76,
                 from include/linux/skbuff.h:33,
                 from include/linux/netfilter.h:5,
                 from include/net/netns/netfilter.h:5,
                 from include/net/net_namespace.h:20,
                 from include/linux/init_task.h:14,
                 from init/init_task.c:1:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_map_dma_mem’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:24:1: warning: no return statement in function returning non-void [-Wreturn-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_map_dma_mem_page’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:30:1: warning: no return statement in function returning non-void [-Wreturn-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_addr_to_phys’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:36:1: warning: no return statement in function returning non-void [-Wreturn-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_supported’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:47:1: warning: no return statement in function returning non-void [-Wreturn-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_mapping_error’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:63:1: warning: no return statement in function returning non-void [-Wreturn-type]
  LD      init/built-in.o
  CC      arch/mips/cavium-octeon/setup.o
In file included from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/dma-mapping.h:10:0,
                 from include/linux/dma-mapping.h:76,
                 from include/asm-generic/pci-dma-compat.h:7,
                 from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/pci.h:129,
                 from include/linux/pci.h:1451,
                 from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/octeon/pci-octeon.h:12,
                 from arch/mips/cavium-octeon/setup.c:41:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_map_dma_mem’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:24:1: error: no return statement in function returning non-void [-Werror=return-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_map_dma_mem_page’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:30:1: error: no return statement in function returning non-void [-Werror=return-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_addr_to_phys’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:36:1: error: no return statement in function returning non-void [-Werror=return-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_supported’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:47:1: error: no return statement in function returning non-void [-Werror=return-type]
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h: In function ‘plat_dma_mapping_error’:
/home/ralf/src/linux/linux-mips/arch/mips/include/asm/mach-cavium-octeon/dma-coherence.h:63:1: error: no return statement in function returning non-void [-Werror=return-type]
cc1: all warnings being treated as errors
make[2]: *** [arch/mips/cavium-octeon/setup.o] Error 1
make[1]: *** [arch/mips/cavium-octeon] Error 2
make: *** [arch/mips] Error 2

[ralf@linux-mips.org: while at it, also include <linux/bug.h> directly.]

Signed-off-by: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5519/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-18 16:28:17 +02:00
Ralf Baechle
39205750ef MIPS: Oceton: Fix build error. 
If CONFIG_CAVIUM_OCTEON_LOCK_L2_TLB, CONFIG_CAVIUM_OCTEON_LOCK_L2_EXCEPTION,
CONFIG_CAVIUM_OCTEON_LOCK_L2_LOW_LEVEL_INTERRUPT and
CONFIG_CAVIUM_OCTEON_LOCK_L2_INTERRUPT are all undefined:

arch/mips/cavium-octeon/setup.c: In function ‘prom_init’:
arch/mips/cavium-octeon/setup.c:715:12: error: unused variable ‘ebase’ [-Werror=unused-variable]

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-18 16:28:16 +02:00
Ralf Baechle
c8d5c68564 MIPS: <uapi/asm/siginfo.h>: Don't reference CONFIG_* symbols. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-18 16:28:16 +02:00
Ralf Baechle
cfceb5e210 MIPS: <uapi/asm/msgbuf.h>: Don't reference CONFIG_* symbols. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-18 16:28:16 +02:00
Ralf Baechle
cfb9a4e7a0 MIPS: <uapi/asm/swab.h>: Don't reference CONFIG_* symbols. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-18 16:28:16 +02:00
Ralf Baechle
f746caa3fc MIPS: <uapi/asm/resource.h: Don't reference CONFIG_* symbols. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-18 16:28:15 +02:00
Ralf Baechle
b8121f0f2f MIPS: <uapi/asm/fcntl.h>: Don't reference CONFIG_* symbols. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-13 16:43:19 +02:00
Ralf Baechle
b378758658 MIPS: Kconfig: Remove extranous help keyword. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-13 16:43:15 +02:00
Markos Chandras
cb2f9938d0 MIPS: ftrace: Add missing CONFIG_DYNAMIC_FTRACE 
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>
 2013-06-10 18:15:18 +02:00
Markos Chandras
d414976d1c MIPS: include: mmu_context.h: Replace VIRTUALIZATION with KVM 
The kvm_* symbols are only available if KVM is selected.

Fixes the following linking problem on a randconfig:

arch/mips/built-in.o: In function `local_flush_tlb_mm':
(.text+0x18a94): undefined reference to `kvm_local_flush_tlb_all'
arch/mips/built-in.o: In function `local_flush_tlb_range':
(.text+0x18d0c): undefined reference to `kvm_local_flush_tlb_all'
kernel/built-in.o: In function `__schedule':
core.c:(.sched.text+0x2a00): undefined reference to `kvm_local_flush_tlb_all'
mm/built-in.o: In function `use_mm':
(.text+0x30214): undefined reference to `kvm_local_flush_tlb_all'
fs/built-in.o: In function `flush_old_exec':
(.text+0xf0a0): undefined reference to `kvm_local_flush_tlb_all'
make: *** [vmlinux] Error 1

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/5437/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-10 18:07:43 +02:00
Manuel Lauss
e63a24ddc7 MIPS: Alchemy: fix wait function 
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>
 2013-06-10 17:59:46 +02:00
Linus Torvalds
554e6e9f81 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 
Pull MIPS fixes from Ralf Baechle:
 "MIPS fixes across the field.  The only area that's standing out is the
  exception handling which received it's dose of breakage as part of the
  microMIPS patchset"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: ralink: add missing SZ_1M multiplier
  MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf.
  MIPS: OCTEON: Improve _machine_halt implementation.
  MIPS: rtlx: Fix implicit declaration of function set_vi_handler()
  MIPS: Trap exception handling fixes
  MIPS: Quit exposing Kconfig symbols in uapi headers.
  MIPS: Remove duplicate definition of check_for_high_segbits.
 2013-06-08 11:51:13 -07:00
John Crispin
cdfce53986 MIPS: ralink: add missing SZ_1M multiplier 
On RT5350 the memory size is set to Bytes and not MegaBytes due to a missing
multiplier.

Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: John Crispin <blogic@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/5378/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-06 16:11:26 +02:00
Ralf Baechle
7b741aa406 MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf. 
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>
 2013-06-06 16:11:26 +02:00
David Daney
38c3c0f673 MIPS: OCTEON: Improve _machine_halt implementation. 
As noted by Wladislav Wiebe:
   $ halt
   ..
   Sent SIGKILL to all processes
   Requesting system halt
   [66.729373] System halted.
   [66.733244]
   [66.734761] =====================================
   [66.739473] [ BUG: lock held at task exit time! ]
   [66.744188] 3.8.7-0-sampleversion-fct #49 Tainted: G           O
   [66.750202] -------------------------------------
   [66.754913] init/21479 is exiting with locks still held!
   [66.760234] 1 lock held by init/21479:
   [66.763990]  #0:  (reboot_mutex){+.+...}, at: [<ffffffff801776c8>] SyS_reboot+0xe0/0x218
   [66.772165]
   [66.772165] stack backtrace:
   [66.776532] Call Trace:
   [66.778992] [<ffffffff805780a8>] dump_stack+0x8/0x34
   [66.783972] [<ffffffff801618b0>] do_exit+0x610/0xa70
   [66.788948] [<ffffffff801777a8>] SyS_reboot+0x1c0/0x218
   [66.794186] [<ffffffff8013d6a4>] handle_sys64+0x44/0x64

This is an alternative fix to the one sent by Wladislav.  We kill the
watchdog for each CPU and then spin in WAIT with interrupts disabled.
This is the lowest power mode for the OCTEON.  If we were to spin with
interrupts enabled, we would get a continual stream of warning messages
and backtraces from the lockup detector, so I chose to disable
interrupts.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Maxim Uvarov <muvarov@gmail.com>
Cc: Wladislav Wiebe <wladislav.kw@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5324/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-06-06 16:11:26 +02:00
Yoichi Yuasa
406b5ee222 MIPS: rtlx: Fix implicit declaration of function set_vi_handler() 
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>
 2013-06-06 16:11:25 +02:00
David Daney
ed829857b3 mips/kvm: Use ENOIOCTLCMD to indicate unimplemented ioctls. 
The Linux Way is to return -ENOIOCTLCMD to the vfs when an
unimplemented ioctl is requested.  Do this in kvm_mips instead of a
random mixture of -ENOTSUPP and -EINVAL.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2013-06-03 10:58:55 +03:00
David Daney
4c73fb2b05 mips/kvm: Fix ABI by moving manipulation of CP0 registers to KVM_{G,S}ET_ONE_REG 
Because not all 256 CP0 registers are ever implemented, we need a
different method of manipulating them.  Use the
KVM_SET_ONE_REG/KVM_GET_ONE_REG mechanism.

Now unused code and definitions are removed.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2013-06-03 10:58:54 +03:00
David Daney
8d17dd041a mips/kvm: Use ARRAY_SIZE() instead of hardcoded constants in kvm_arch_vcpu_ioctl_{s,g}et_regs 
Also we cannot set special zero register, so force it to zero.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2013-06-03 10:58:53 +03:00
David Daney
bf32ebf66d mips/kvm: Fix name of gpr field in struct kvm_regs. 
Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2013-06-03 10:58:53 +03:00
David Daney
688cded320 mips/kvm: Fix ABI for use of 64-bit registers. 
All registers are 64-bits wide, 32-bit guests use the least
significant portion of the register storage fields.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2013-06-03 10:58:52 +03:00
David Daney
1f3dc6d764 mips/kvm: Fix ABI for use of FPU. 
Define a non-empty struct kvm_fpu.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
 2013-06-03 10:58:50 +03:00
Linus Torvalds
b64194068b USB fixes for 3.10-rc2 
Here are a number of tiny USB bugfixes / new device ids for 3.10-rc2
 
 The majority of these are USB gadget fixes, but they are all small.
 Other than that, some USB host controller fixes, and USB serial driver
 fixes for problems reported with them.
 
 Also hopefully a fixed up USB_OTG Kconfig dependancy, that one seems to
 be almost impossible to get right for all of the different platforms
 these days.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg Kroah-Hartman:
 "Here are a number of tiny USB bugfixes / new device ids for 3.10-rc2

  The majority of these are USB gadget fixes, but they are all small.
  Other than that, some USB host controller fixes, and USB serial driver
  fixes for problems reported with them.

  Also hopefully a fixed up USB_OTG Kconfig dependancy, that one seems
  to be almost impossible to get right for all of the different
  platforms these days."

* tag 'usb-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (56 commits)
  USB: cxacru: potential underflow in cxacru_cm_get_array()
  USB: ftdi_sio: Add support for Newport CONEX motor drivers
  USB: option: add device IDs for Dell 5804 (Novatel E371) WWAN card
  usb: ohci: fix goto wrong tag in err case
  usb: isp1760-if: fix memleak when platform_get_resource fail
  usb: ehci-s5p: fix memleak when fallback to pdata
  USB: serial: clean up chars_in_buffer
  USB: ti_usb_3410_5052: fix chars_in_buffer overhead
  USB: io_ti: fix chars_in_buffer overhead
  USB: ftdi_sio: fix chars_in_buffer overhead
  USB: ftdi_sio: clean up get_modem_status
  USB: serial: add generic wait_until_sent implementation
  USB: serial: add wait_until_sent operation
  USB: set device dma_mask without reference to global data
  USB: Blacklisted Cinterion's PLxx WWAN Interface
  usb: option: Add Telewell TW-LTE 4G
  USB: EHCI: remove bogus #error
  USB: reset resume quirk needed by a hub
  USB: usb-stor: realtek_cr: Fix compile error
  usb, chipidea: fix link error when USB_EHCI_HCD is a module
  ...
 2013-05-23 09:23:32 -07:00
Linus Torvalds
72dd4e7980 Merge git://git.kernel.org/pub/scm/virt/kvm/kvm 
Pull kvm bugfixes from Gleb Natapov.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lock/unlock()
  KVM/MIPS32: Move include/asm/kvm.h => include/uapi/asm/kvm.h since it is a user visible API.
  KVM: take over co-maintainership from Marcelo, fix MAINTAINERS entry
 2013-05-23 09:18:08 -07:00
Maciej W. Rozycki
a9a6e7a095 MIPS: Trap exception handling fixes 
2a0b24f56c 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>
 2013-05-23 17:47:51 +02:00
David Daney
8f657933a3 MIPS: Quit exposing Kconfig symbols in uapi headers. 
The kernel's struct pt_regs has many fields conditional on various
Kconfig variables, we cannot be exporting this garbage to user-space.

Move the kernel's definition to asm/ptrace.h, and put a uapi only
version in uapi/asm/ptrace.h gated by #ifndef __KERNEL__

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5305/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-23 10:19:04 +02:00
David Daney
be8a6d452b MIPS: Remove duplicate definition of check_for_high_segbits. 
In C, one definition is sufficient.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5304/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-23 10:19:04 +02:00
Aron Xu
dec33abaaf MIPS: N64: Wire getdents64(2) 
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>
 2013-05-22 15:37:58 +02:00
Masami Hiramatsu
22047b8517 kprobes/mips: Fix to check double free of insn slot 
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>
 2013-05-22 12:48:30 +02:00
Sanjay Lal
6d17c0d1e8 KVM/MIPS32: Wrap calls to gfn_to_pfn() with srcu_read_lock/unlock() 
- As suggested by Gleb, wrap calls to gfn_to_pfn() with srcu_read_lock/unlock().
  Memory slots should be acccessed from a SRCU read section.
- kvm_mips_map_page() now returns an error code to it's callers, instead of
  calling panic() if it cannot find a mapping for a particular gfn.

Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
 2013-05-22 11:44:09 +03:00
Sanjay Lal
ba86e4dda7 KVM/MIPS32: Move include/asm/kvm.h => include/uapi/asm/kvm.h since it is a user visible API. 
Signed-off-by: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
 2013-05-22 11:42:53 +03:00
Ralf Baechle
087d990b37 MIPS: Idle: Break r4k_wait into two functions and fix it. 
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>
 2013-05-22 01:34:28 +02:00
Ralf Baechle
f94d9a8ef9 MIPS: Idle: Do address fiddlery in helper functions. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-22 01:34:28 +02:00
Ralf Baechle
bdc92d74e0 MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-22 01:34:27 +02:00
Ralf Baechle
d882f07a83 MIPS: Idle: Don't call local_irq_disable() in cpu_wait() implementations. 
The generic idle loop has already disabled interrupts so this is redundant.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-22 01:34:27 +02:00
Ralf Baechle
fb40bc3e94 MIPS: Idle: Re-enable irqs at the end of r3081, au1k and loongson2 cpu_wait. 
Without this, the

    WARN_ON_ONCE(irqs_disabled());

in the idle loop will be triggered.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-22 01:34:26 +02:00
Ralf Baechle
c9b6869dbb MIPS: Idle: Make call of function pointer readable. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-22 01:34:26 +02:00
Ralf Baechle
f91a148aa2 MIPS: Idle: Consistently reformat inline assembler. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-22 01:34:25 +02:00
Ralf Baechle
00baf8576c MIPS: Idle: cleaup SMTC idle hook as per Linux coding style. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-22 01:34:25 +02:00
Ralf Baechle
49f2ec91e1 MIPS: Consolidate idle loop / WAIT instruction support in a single file. 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
 2013-05-22 01:34:25 +02:00