linux.git/arch/frv/kernel/entry.S, branch master

arch: remove frv port

2018-03-09T22:19:58+00:00

The Fujitsu FRV kernel port has been around for a long time, but has not
seen regular updates in several years and instead was marked 'Orphaned'
in 2016 by long-time maintainer David Howells.

The SoC product line apparently is apparently still around in the form
of the Socionext Milbeaut image processor, but this one no longer uses
the FRV CPU cores.

This removes all FRV specific files from the kernel.

Link: http://www.socionext.com/en/products/assp/milbeaut/
Cc: David Howells 
Signed-off-by: Arnd Bergmann

frv: fix the broken preempt

2012-11-02T16:08:25+00:00

Just get %icc2 into the state we would have after local_irq_disable()
and physical IRQ having happened since then.  Then we can simply
use preempt_schedule_irq() and be done with the whole mess.

Acked-by: David Howells 
Signed-off-by: Al Viro

frv: switch to saner kernel_execve() semantics

2012-11-02T16:05:04+00:00

Signed-off-by: Al Viro

FRV: Fix the preemption handling

2012-11-02T13:20:42+00:00

Fix the preemption handling in FRV code where the PREEMPT_ACTIVE value is
incorrectly loaded into the threadinfo flags rather than the threadinfo
preemption count.

Unfortunately, the code cannot be simply converted to use
preempt_schedule_irq() as is because FRV uses virtual interrupt disablement to
cut down on the cost of actually disabling interrupts and thus
local_irq_enable() doesn't actually enable interrupts.

Reported-by: Al Viro 
Signed-off-by: David Howells 
cc: Al Viro

FRV: Fix VLIW packing constraint violation in entry.S

2012-10-17T01:49:15+00:00

Fix VLIW packing constraint violation in entry.S:

  arch/frv/kernel/entry.S: Assembler messages:
  arch/frv/kernel/entry.S:871: Error: VLIW packing constraint violation

When packing CALLL with OR, CALLL must go in the first slot.  The
instructions are executed simultaneously, so it doesn't matter which way
round they're packed from that point of view.

Signed-off-by: David Howells 
Acked-by: Al Viro 
Signed-off-by: Linus Torvalds

frv: switch to generic kernel_execve

2012-10-01T04:53:11+00:00

Acked-by: David Howells 
Signed-off-by: Al Viro

frv: split ret_from_fork, simplify kernel_thread() a lot

2012-10-01T04:53:10+00:00

Acked-by: David Howells 
Signed-off-by: Al Viro

FRV: Optimise the system call exit path in entry.S [ver #2]

2012-06-01T16:59:38+00:00

Optimise the system call exit path in entry.S by packing some instructions.

Suggested-by: Al Viro 
Signed-off-by: David Howells 
Signed-off-by: Al Viro

FRV: Shrink TIF_WORK_MASK [ver #2]

2012-06-01T16:59:37+00:00

Shrink TIF_WORK_MASK so that it will fit in the 12-bit signed immediate
operand field of an ANDI instruction.

Suggested-by: Al Viro 
Signed-off-by: David Howells 
Signed-off-by: Al Viro

FRV: Prevent syscall exit tracing and notify_resume at end of kernel exceptions

2012-06-01T16:59:18+00:00

Move the test for kernel mode processing from do_signal() into entry.S to also
prevent system call exit tracing and userspace resumption notification handling
happening when returning from kernel exceptions.

Reported-by: Al Viro 
Signed-off-by: David Howells 
Signed-off-by: Al Viro