linux.git/arch/openrisc/kernel/head.S, branch v4.13

scripts/spelling.txt: add "aligment" pattern and fix typo instances

2017-02-28T02:43:46+00:00

Fix typos and add the following to the scripts/spelling.txt:

  aligment||alignment

I did not touch the "N_BYTE_ALIGMENT" macro in
drivers/net/wireless/realtek/rtlwifi/wifi.h to avoid unpredictable
impact.

I fixed "_aligment_handler" in arch/openrisc/kernel/entry.S because
it is surrounded by #if 0 ... #endif.  It is surely safe and I
confirmed "_alignment_handler" is correct.

I also fixed the "controler" I found in the same hunk in
arch/openrisc/kernel/head.S.

Link: http://lkml.kernel.org/r/1481573103-11329-8-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

openrisc: head: Init r0 to 0 on start

2017-02-24T20:08:47+00:00

Originally openrisc spec 0 specified that r0 would be wired to ground.
This is no longer the case.  r0 is not guaranteed to be 0 at init, so we
need to initialize it to 0 before using it.

Also, if we are clearing r0 we cant use r0 to clear itself. Change the
the CLEAR_GPR macro to use movhi for clearing.

Reported-by: Jakob Viketoft 
Signed-off-by: Stafford Horne

openrisc: head: Remove unused strings

2017-02-24T20:08:46+00:00

These string definitions are no longer used removed them.  Noticed this
while working on a CONFIG_DEBUG_INFO build issue.

Signed-off-by: Stafford Horne

openrisc: head: Move init strings to rodata section

2017-02-24T20:05:37+00:00

The strings used during the head/init phase of openrisc bootup were
stored in the executable section of the binary.

This causes compilation to fail when using CONFIG_DEBUG_INFO with
error:
 Error: unaligned opcodes detected in executable segment

Signed-off-by: Stafford Horne

openrisc: head: refactor out tlb flush into it's own function

2017-02-06T12:50:43+00:00

This brings it inline with the other setup oprations done like the cache
enables _ic_enable and _dc_enable.  Also, this is going to make it
easier to initialize additional cpu's when smp is introduced.

Signed-off-by: Stefan Kristiansson 
[shorne@gmail.com: Added commit body]
Signed-off-by: Stafford Horne

openrisc: head: use THREAD_SIZE instead of magic constant

2017-02-06T12:50:42+00:00

The stack size was hard coded to 0x2000, use the standard THREAD_SIZE
definition loaded from thread_info.h.

Signed-off-by: Stefan Kristiansson 
[shorne@gmail.com: Added body to the commit message]
Signed-off-by: Stafford Horne

openrisc: tlb miss handler optimizations

2017-02-06T12:50:42+00:00

By slightly reorganizing the code, the number of registers
used in the tlb miss handlers can be reduced by two,
thus removing the need to save them to memory.

Also, some dead and commented out code is removed.

No functional change.

Signed-off-by: Stefan Kristiansson 
Signed-off-by: Jonas Bonn 
Signed-off-by: Stafford Horne

openrisc: drop _PAGE_FILE and pte_file()-related helpers

2015-02-10T22:30:33+00:00

We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov 
Cc: Jonas Bonn 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

openrisc: add missing header inclusion

2013-02-26T06:44:08+00:00

Prevents build issue with updated toolchain

Reported-by: Jack Thomasson 
Tested-by: Christian Svensson 
Signed-off-by: Stefan Kristiansson 
Signed-off-by: Jonas Bonn

openrisc: fix up vmalloc page table loading

2013-02-14T15:39:26+00:00

vmalloc'ed pages are faulted into a process' page tables on demand.  In
order to facilitate this, do_page_fault needs to know whether it was
called via a page fault exception or a TLB-miss exception.

This patch adds a wrapper around the _x_page_fault_handler entry points
that the TLB-miss exceptions can call into in order to have the relevant
parameter set to satisfy do_page_fault.

This fixes a bug and is "good enough" for now.  That said, this whole
handling of vmalloc needs to be audited for correctness at some point.

Signed-off-by: Jonas Bonn