linux-stable.git/arch/mips/kernel/traps.c, branch v3.16

Merge branch '3.15-fixes' into mips-for-linux-next

2014-06-04T20:53:02+00:00

MIPS: Call find_vma with the mmap_sem held

2014-06-03T20:19:09+00:00

Performing vma lookups without taking the mm->mmap_sem is asking
for trouble. While doing the search, the vma in question can be
modified or even removed before returning to the caller. Take the
lock (exclusively) in order to avoid races while iterating through
the vmacache and/or rbtree.

Updates two functions:
  - process_fpemu_return()
  - cteon_flush_cache_sigtramp()

Signed-off-by: Davidlohr Bueso 
Tested-by: Andreas Herrmann 
Cc: linux-mips@linux-mips.org
Cc: akpm@linux-foundation.org
Cc: zeus@gnu.org
Cc: aswin@hp.com
Cc: davidlohr@hp.com
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Patchwork: http://patchwork.linux-mips.org/patch/6811/
Signed-off-by: Ralf Baechle

Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next

2014-05-29T13:08:23+00:00

MIPS: Fix typo when reporting cache and ftlb errors for ImgTec cores

2014-05-25T10:45:06+00:00

Introduced by the following two commits:
75b5b5e0a262790fa11043fe45700499c7e3d818
"MIPS: Add support for FTLBs"
6de20451857ed14a4eecc28d08f6de5925d1cf96
"MIPS: Add printing of ES bit for Imgtec cores when cache error occurs"

Signed-off-by: Markos Chandras 
Reported-by: Matheus Almeida 
Cc: linux-mips@linux-mips.org
Cc: Markos Chandras 
Cc: stable@vger.kernel.org # v3.14+
Patchwork: https://patchwork.linux-mips.org/patch/6980/
Signed-off-by: Ralf Baechle

MIPS: MT: Remove SMTC support

2014-05-23T22:07:01+00:00

Nobody is maintaining SMTC anymore and there also seems to be no userbase.
Which is a pity - the SMTC technology primarily developed by Kevin D.
Kissell  is an ingenious demonstration for the MT
ASE's power and elegance.

Based on Markos Chandras  patch
https://patchwork.linux-mips.org/patch/6719/ which while very similar did
no longer apply cleanly when I tried to merge it plus some additional
post-SMTC cleanup - SMTC was a feature as tricky to remove as it was to
merge once upon a time.

Signed-off-by: Ralf Baechle

MIPS: traps: Add CPU PM callback for trap configuration

2014-05-02T15:38:59+00:00

Implement a CPU power management callback for restoring trap related CPU
configuration after CPU power up from a low power state. The following
state is restored:

- Status register
- HWREna register
- Exception vector configuration registers
- Context/XContext register

Signed-off-by: James Hogan 
Signed-off-by: Paul Burton

MIPS: traps: Set correct address limit for breakpoints and traps

2014-03-26T22:09:13+00:00

When a breakpoint or trap happens when operating in kernel mode but
on users behalf (eg syscall) it is necessary to change the address
limit to KERNEL_DS so any address checking can be bypassed and print
the correct stack trace.

Signed-off-by: Leonid Yegoshin 
Signed-off-by: Markos Chandras

MIPS: kernel: traps: Whitespace clean up

2014-03-26T22:09:13+00:00

Signed-off-by: Markos Chandras

MIPS: Add cases for CPU_P5600

2014-03-26T22:09:11+00:00

Add a CPU_P5600 case to various switch statements, doing the same thing
as for CPU_PROAPTIV.

Signed-off-by: James Hogan 
Reviewed-by: Markos Chandras 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6408/
Signed-off-by: Ralf Baechle

MIPS: Dumb MSA FP exception handler

2014-03-26T22:09:10+00:00

This patch adds a simple handler for MSA FP exceptions which delivers a
SIGFPE to the running task. In the future it should probably be extended
to re-execute the instruction with the MSACSR.NX bit set in order to
generate results for any elements which did not cause an exception
before delivering the SIGFPE signal.

Signed-off-by: Paul Burton 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6432/
Signed-off-by: Ralf Baechle