linux-stable.git/arch/parisc/include/asm, branch v4.5

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

parisc: Disable huge pages on Mako machines

2015-12-12T15:45:23+00:00

Mako-based machines (PA8800 and PA8900 CPUs) don't allow aliasing on
non-equaivalent addresses.

Signed-off-by: Helge Deller

Merge branch 'parisc-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

2015-11-22T20:50:58+00:00

Pull parisc update from Helge Deller:
 "This patchset adds Huge Page and HUGETLBFS support for parisc"

Honestly, the hugepage support should have gone through in the merge
window, and is not really an rc-time fix.  But it only touches
arch/parisc, and I cannot find it in myself to care.  If one of the
three parisc users notices a breakage, I will point at Helge and make
rude farting noises.

* 'parisc-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Map kernel text and data on huge pages
  parisc: Add Huge Page and HUGETLBFS support
  parisc: Use long branch to do_syscall_trace_exit
  parisc: Increase initial kernel mapping to 32MB on 64bit kernel
  parisc: Initialize the fault vector earlier in the boot process.
  parisc: Add defines for Huge page support
  parisc: Drop unused MADV_xxxK_PAGES flags from asm/mman.h
  parisc: Drop definition of start_thread_som for HP-UX SOM binaries
  parisc: Fix wrong comment regarding first pmd entry flags

parisc: Add Huge Page and HUGETLBFS support

2015-11-22T11:23:10+00:00

This patch adds huge page support to allow userspace to allocate huge
pages and to use hugetlbfs filesystem on 32- and 64-bit Linux kernels.
A later patch will add kernel support to map kernel text and data on
huge pages.

The only requirement is, that the kernel needs to be compiled for a
PA8X00 CPU (PA2.0 architecture). Older PA1.X CPUs do not support
variable page sizes. 64bit Kernels are compiled for PA2.0 by default.

Technically on parisc multiple physical huge pages may be needed to
emulate standard 2MB huge pages.

Signed-off-by: Helge Deller