linux-stable.git/arch/parisc/include/asm, branch linux-4.5.y

parisc: Unbreak handling exceptions from kernel modules

2016-04-20T06:45:05+00:00

commit 2ef4dfd9d9f288943e249b78365a69e3ea3ec072 upstream.

Handling exceptions from modules never worked on parisc.
It was just masked by the fact that exceptions from modules
don't happen during normal use.

When a module triggers an exception in get_user() we need to load the
main kernel dp value before accessing the exception_data structure, and
afterwards restore the original dp value of the module on exit.

Noticed-by: Mikulas Patocka 
Signed-off-by: Helge Deller 
Signed-off-by: Greg Kroah-Hartman

parisc: Fix and enable seccomp filter support

2016-04-20T06:45:05+00:00

commit 910cd32e552ea09caa89cdbe328e468979b030dd upstream.

The seccomp filter support requires careful handling of task registers.  This
includes reloading of the return value (%r28) and proper syscall exit if
secure_computing() returned -1.

Additionally we need to sign-extend the syscall number from signed 32bit to
signed 64bit in do_syscall_trace_enter() since the ptrace interface only allows
storing 32bit values in compat mode.

Signed-off-by: Helge Deller 
Signed-off-by: Greg Kroah-Hartman

parisc: Fix SIGSYS signals in compat case

2016-04-20T06:45:05+00:00

commit 4f4acc9472e54ce702f1d85fc9e6d57767dec91f upstream.

Signed-off-by: Helge Deller 
Signed-off-by: Greg Kroah-Hartman

parisc: Use parentheses around expression in floppy.h

2016-03-01T21:51:04+00:00

David Binderman reported a style issue in the floppy.h header file:
arch/parisc/include/asm/floppy.h:221: (style) Boolean result is used in bitwise
  operation. Clarify expression with parentheses.

Reported-by: David Binderman 
Cc: David Binderman 
Signed-off-by: Helge Deller

dma-mapping: always provide the dma_map_ops based implementation

2016-01-21T01:09:18+00:00

Move the generic implementation to  now that all
architectures support it and remove the HAVE_DMA_ATTR Kconfig symbol now
that everyone supports them.

[valentinrothberg@gmail.com: remove leftovers in Kconfig]
Signed-off-by: Christoph Hellwig 
Cc: "David S. Miller" 
Cc: Aurelien Jacquiot 
Cc: Chris Metcalf 
Cc: David Howells 
Cc: Geert Uytterhoeven 
Cc: Haavard Skinnemoen 
Cc: Hans-Christian Egtvedt 
Cc: Helge Deller 
Cc: James Hogan 
Cc: Jesper Nilsson 
Cc: Koichi Yasutake 
Cc: Ley Foon Tan 
Cc: Mark Salter 
Cc: Mikael Starvik 
Cc: Steven Miao 
Cc: Vineet Gupta 
Cc: Christian Borntraeger 
Cc: Joerg Roedel 
Cc: Sebastian Ott 
Signed-off-by: Valentin Rothberg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

parisc: convert to dma_map_ops

2016-01-21T01:09:18+00:00

Signed-off-by: Christoph Hellwig 
Tested-by: Helge Deller 
Acked-by: Helge Deller 
Cc: Christian Borntraeger 
Cc: Joerg Roedel 
Cc: Sebastian Ott 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

parisc: Protect huge page pte changes with spinlocks

2016-01-16T18:19:14+00:00

PA-RISC doesn't have atomic instructions to modify page table entries, so it
takes spinlock in the TLB handler and modifies the page table entry
non-atomically. If you modify the page table entry without the spinlock, you
may race with TLB handler on another CPU and your modification may be lost.
Protect against that with usage of purge_tlb_start() and purge_tlb_end() which
handles the TLB spinlock.

Signed-off-by: Helge Deller 
Cc: stable@vger.kernel.org # v4.4

parisc: Imporove debug info about space registers and TLB configuration

2016-01-12T21:12:09+00:00

Signed-off-by: Helge Deller

parisc: Reduce overhead of parisc_requires_coherency()

2016-01-12T21:03:36+00:00

Signed-off-by: Helge Deller

parisc: Initialize PCI bridge cache line and default latency

2016-01-12T21:03:21+00:00

PCI controllers and pci-pci bridges may have not been fully initialized
regarding cache line and defaul latency.

This partly reverts
commit 5f0e9b4 ("parisc: Remove unused pcibios_init_bus()")

Signed-off-by: Helge Deller