linux-toradex.git/arch/sparc/kernel, branch v3.0.7

sparc64: Only Panther cheetah+ chips have POPC.

2011-10-03T18:40:02+00:00

commit 1a8e0da5937a6c87807083baa318cf8f98dac9aa upstream.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc32,sun4d: Change IPI IRQ level to prevent collision between IPI and timer interrupt

2011-10-03T18:40:01+00:00

commit 38f7f8f05e8239e9871f7e1c4b0a842080e85315 upstream.

On Sun4d systems running in SMP mode, IRQ 14 is used for timer interrupts
and has a specialized interrupt handler. IPI is currently set to use IRQ 14
as well, which causes it to trigger the timer interrupt handler, and not the
IPI interrupt handler.

The IPI interrupt is therefore changed to IRQ 13, which is the highest
normally handled interrupt. This IRQ is also used for SBUS interrupts,
however there is nothing in the IPI/SBUS interrupt handlers that indicate
that they will not handle sharing the interrupt.
(IRQ 13 is indicated as audio interrupt, which is unlikely to be found in a
sun4d system)

Signed-off-by: Kjetil Oftedal 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc: fix array bounds error setting up PCIC NMI trap

2011-10-03T18:40:01+00:00

commit 4a0342ca8e8150bd47e7118a76e300692a1b6b7b upstream.

  CC      arch/sparc/kernel/pcic.o
arch/sparc/kernel/pcic.c: In function 'pcic_probe':
arch/sparc/kernel/pcic.c:359:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:359:8: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:360:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:360:8: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:361:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:361:8: error: array subscript is above array bounds [-Werror=array-bounds]
cc1: all warnings being treated as errors

I'm not particularly familiar with sparc but t_nmi (defined in head_32.S via
the TRAP_ENTRY macro) and pcic_nmi_trap_patch (defined in entry.S) both appear
to be 4 instructions long and I presume from the usage that instructions are
int sized.

Signed-off-by: Ian Campbell 
Cc: "David S. Miller" 
Cc: sparclinux@vger.kernel.org
Reviewed-by: Sam Ravnborg 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc: Allow handling signals when stack is corrupted.

2011-10-03T18:39:59+00:00

commit 5598473a5b40c47a8c5349dd2c2630797169cf1a upstream.

If we can't push the pending register windows onto the user's stack,
we disallow signal delivery even if the signal would be delivered on a
valid seperate signal stack.

Add a register window save area in the signal frame, and store any
unsavable windows there.

On sigreturn, if any windows are still queued up in the signal frame,
try to push them back onto the stack and if that fails we kill the
process immediately.

This allows the debug/tst-longjmp_chk2 glibc test case to pass.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc: Don't do hypervisor calls on non-sun4v in DS driver.

2011-08-16T01:31:43+00:00

commit c92761fd9efcbbcb59e7bf4db88e29ce03229889 upstream.

Reported-by: Pieter-Paul Giesberts 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc: Size mondo queues more sanely.

2011-08-16T01:31:41+00:00

[ Upstream commit 961f65fc41cdc1f9099a6075258816c0db98e390 ]

There is currently no upper limit on the mondo queue sizes we'll use,
which guarentees that we'll eventually his page allocation limits, and
thus allocation failures, due to MAX_ORDER.

Cap the sizes sanely, current limits are:

CPU  MONDO	2 * max_possible_cpus
DEV  MONDO	256 (basically NR_IRQS)
RES  MONDO	128
NRES MONDO	4

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc: Access kernel TSB using physical addressing when possible.

2011-08-16T01:31:41+00:00

[ Upstream commit 9076d0e7e02b98f7a65df10d1956326c8d8ba61a ]

On sun4v this is basically required since we point the hypervisor and
the TSB walking hardware at these tables using physical addressing
too.

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc: Use popc when possible for ffs/__ffs/ffz.

2011-08-16T01:31:41+00:00

[ Upstream commit 56d205cc5c0a3032a605121d4253e111193bf923 ]

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc: Set reboot-cmd using reboot data hypervisor call if available.

2011-08-16T01:31:41+00:00

[ Upstream commit ea5e7447ea9d555558e0f13798f5143dd51a915a ]

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

sparc: Add some missing hypervisor API groups.

2011-08-16T01:31:41+00:00

[ Upstream commit e2eb9f8158ead43a88c0f0b4d74257b1be938a18 ]

Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman