linux-stable.git/arch/xtensa/kernel, branch v3.7

xtensa: switch to generic sys_execve()

2012-10-25T22:00:44+00:00

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: switch to generic kernel_execve()

2012-10-25T22:00:36+00:00

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: switch to generic kernel_thread()

2012-10-25T22:00:03+00:00

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: reset windowbase/windowstart when cloning the VM

2012-10-25T21:53:36+00:00

When we copy a user thread with CLONE_VM, we also have to reset
windowbase and windowstart to start a pristine stack frame. Otherwise,
overflows can happen using the address 0 as the stack pointer.
Also add a special case for vfork, which continues on the
parent stack until it calls execve. Because this could be a call8, we
need to spill the stack pointer of the previus frame (if still 'live' in
the register file).

Signed-off-by: Chris Zankel

xtensa: allow multi-inclusion for uapi/unistd.h

2012-10-25T21:53:36+00:00

Xtensa implements a method that allows to generate a arbitrary output
for each system call by defining the __SYSCALL(number, function, num_args).
This usually requires to include uapi/unistd.h twice. Instead of removing
the guard agains multiple inclusion entirely, allow to include unistd.h again
only if __SYSCALL is defined. Note that __SYSCALL gets always undefined at
the end of the file.

Signed-off-by: Chris Zankel

xtensa: minor compiler warning fix

2012-10-19T17:24:20+00:00

Fix two compiler warnings complaining about truncating a value on
a 64-bit host, and about declaring an unused variable that is only
used for a specific configuration.

Signed-off-by: Chris Zankel

UAPI: (Scripted) Disintegrate arch/xtensa/include/asm

2012-10-16T04:48:53+00:00

UAPI: (Scripted) Disintegrate arch/xtensa/include/asm

Signed-off-by: David Howells 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Michael Kerrisk 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones 
Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: fix unaligned usermode access

2012-10-16T04:48:41+00:00

- correct use of .config #define name;
      CONFIG_UNALIGNED_USER ---> CONFIG_XTENSA_UNALIGNED_USER

Signed-off-by: Max Filippov 
Signed-off-by: Pete Delaney 
Signed-off-by: Chris Zankel

xtensa: reorganize SR referencing

2012-10-16T04:48:08+00:00

- reference SRs by names where possible, not by numbers;
- get rid of __stringify around SR names where possible;
- remove unneeded SR names from asm/regs.h;
- add SREG_ prefix to remaining SR names;

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: fix boot parameters parsing

2012-10-16T04:43:15+00:00

Boot parameter tags with handlers are ignored like this:

	[    0.000000] Ignoring tag 0x00001003
	[    0.000000] Ignoring tag 0x00001001
	[    0.000000] Ignoring tag 0x00001004

because neither tagtable entries nor tag handlers appear in the vmlinux.

Fix tagtable definition attributes so that tag entries are not dropped.

Fix end of memory bank calculation in parse_tag_mem: it is intended to
round down to page size, but instead did something strange leading to
hang right after boot.

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel