linux-dev/arch/sparc64/kernel/winfixup.S, branch master

sparc,sparc64: unify kernel/

2008-12-04T17:17:21Z

o Move all files from sparc64/kernel/ to sparc/kernel - rename as appropriate o Update sparc/Makefile to the changes o Update sparc/kernel/Makefile to include the sparc64 files NOTE: This commit changes link order on sparc64! Link order had to change for either of sparc32 and sparc64. And assuming sparc64 see more testing than sparc32 change link order on sparc64 where issues will be caught faster. Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller

[SPARC64]: %l6 trap return handling no longer necessary.

2008-04-24T10:15:22Z

Now that we indicate the "restart system call" in the trap type field of pt_regs->magic, we don't need to set the %l6 boolean in all of the trap return paths. And we therefore don't need to pass it to do_notify_resume(). Signed-off-by: David S. Miller

[SPARC64]: Fix unaligned access winfxup handling on SUN4V.

2006-03-20T09:13:39Z

Another case where we have to force ourselves into global register level one. Also make sure the arguments passed to sun4v_do_mna() are correct. This area actually needs some more work, for example spill fixup is not necessarily going to do the right thing for this case. Signed-off-by: David S. Miller

[SPARC64]: Fix bogus call to sun4v_mna in winfixup code.

2006-03-20T09:13:13Z

The C function is named sun4v_do_mna not sun4v_mna. Signed-off-by: David S. Miller

[SPARC64]: SUN4V memory exception trap handlers.

2006-03-20T09:12:07Z

Signed-off-by: David S. Miller

[SPARC64]: Refine register window trap handling.

2006-03-20T09:11:36Z

When saving and restoing trap state, do the window spill/fill handling inline so that we never trap deeper than 2 trap levels. This is important for chips like Niagara. The window fixup code is massively simplified, and many more improvements are now possible. Signed-off-by: David S. Miller

[SPARC64]: Add explicit register args to trap state loading macros.

2006-03-20T09:11:35Z

This, as well as making the code cleaner, allows a simplification in the TSB miss handling path. Signed-off-by: David S. Miller

[SPARC64]: Don't clobber alt-global %g4 on window fixups.

2006-03-20T09:11:30Z

If we are returning back to kernel mode, %g4 could be live (for example, in the case where we window spill in the etrap code). So do not change it's value if going back to kernel. Signed-off-by: David S. Miller

[SPARC64]: Fix race in LOAD_PER_CPU_BASE()

2006-03-20T09:11:29Z

Since we use %g5 itself as a temporary, it can get clobbered if we take an interrupt mid-stream and thus cause end up with the final %g5 value too early as a result of rtrap processing. Set %g5 at the very end, atomically, to avoid this problem. Signed-off-by: David S. Miller

[SPARC64]: Fix bogus flush instruction usage.

2006-03-20T09:11:22Z

Some of the trap code was still assuming that alternate global %g6 was hard coded with current_thread_info(). Let's just consistently flush at KERNBASE when we need a pipeline synchronization. That's locked into the TLB and will always work. Signed-off-by: David S. Miller