linux-toradex.git/arch, branch v2.6.21

[MIPS] Fix oprofile logic to physical counter remapping

2007-04-24T21:10:18+00:00

This did cause oprofile to fail on non-multithreaded systems with more
than 2 processors such as the BCM1480.

Reported by Manish Lachwani (mlachwani@mvista.com).

Signed-off-by: Ralf Baechle

[PATCH] i386: Fix some warnings added by earlier patch

2007-04-24T11:05:37+00:00

Signed-off-by: Andi Kleen

[PATCH] x86-64: Always flush all pages in change_page_attr

2007-04-24T11:05:37+00:00

change_page_attr on x86-64 only flushed the TLB for pages that got
reverted. That's not correct: it has to be flushed in all cases.

This bug was added in some earlier changes.

Just flush all pages for now.

This could be done more efficiently, but for this late in the release
this seem to be the best fix.

Pointed out by Jan Beulich

Signed-off-by: Andi Kleen

[PATCH] x86: Remove noreplacement option

2007-04-24T11:05:37+00:00

noreplacement is dangerous on modern systems because it will not replace the
context switch FNSAVE with SSE aware FXSAVE. But other places in the kernel still assume
SSE and do FXSAVE and the CPU will then access FXSAVE information with
FNSAVE and cause corruption.

Easiest way to avoid this is to remove the option. It was mostly for paranoia
reasons anyways and alternative()s have been stable for some time.

Thanks to Jeremy F. for reporting and helping debug it.

Signed-off-by: Andi Kleen

[PATCH] x86-64: make GART PTEs uncacheable

2007-04-24T11:05:36+00:00

This patches fixes the silent data corruption problems being seen using the
GART iommu where 4kB of data where incorrect (seen mostly on Nvidia CK804
systems).  This fix, to mark the memory regin the GART PTEs reside on as
uncacheable, also brings the code in line with the AGP specification.

Signed-off-by: Joachim Deguara 
Signed-off-by: Andi Kleen

Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

2007-04-21T05:57:51+00:00

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Fix wrong checksum for split TCP packets on 64-bit MIPS
  [MIPS] Fix BUG(), BUG_ON() handling
  [MIPS] Retry {save,restore}_fp_context if failed in atomic context.
  [MIPS] Disallow CpU exception in kernel again.
  [MIPS] Add missing silicon revisions for BCM112x

Longhaul - Revert ACPI C3 on Longhaul ver. 2

2007-04-21T05:56:29+00:00

Support for Longhaul ver.  2 broke driver for VIA C3 Eden 600MHz with
Samuel 2 core.  Processor is not able to switch frequency anymore.  I
don't know much about this issue at the moment, but until (if ever) I
will know why, this part should be reversed.

Signed-off-by: Rafal Bilski 
Signed-off-by: Dave Jones 
Signed-off-by: Linus Torvalds

[MIPS] Fix BUG(), BUG_ON() handling

2007-04-20T13:58:37+00:00

With commit 63dc68a8cf60cb110b147dab1704d990808b39e2, kernel can not
handle BUG() and BUG_ON() properly since get_user() returns false for
kernel code.  Use __get_user() to skip unnecessary access_ok().  This
patch also make BRK_BUG code encoded in the TNE instruction.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] Retry {save,restore}_fp_context if failed in atomic context.

2007-04-20T13:58:37+00:00

The save_fp_context()/restore_fp_context() might sleep on accessing
user stack and therefore might lose FPU ownership in middle of them.

If these function failed due to "in_atomic" test in do_page_fault,
touch the sigcontext area in non-atomic context and retry these
save/restore operation.

This is a replacement of a (broken) fix which was titled "Allow CpU
exception in kernel partially".

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle

[MIPS] Disallow CpU exception in kernel again.

2007-04-20T13:58:37+00:00

The commit 4d40bff7110e9e1a97ff8c01bdd6350e9867cc10 ("Allow CpU
exception in kernel partially") was broken.  The commit was to fix
theoretical problem but broke usual case.  Revert it for now.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle