linux-toradex.git/arch, branch v2.6.16.27

[PATCH] SPARC64: Fix missing fold at end of checksums.

2006-06-22T19:16:11+00:00

Both csum_partial() and the csum_partial_copy*() family of routines
forget to do a final fold on the computed checksum value on sparc64.
So do the standard Sparc "add + set condition codes, add carry"
sequence, then make sure the high 32-bits of the return value are
clear.

Based upon some excellent detective work and debugging done by
Richard Braun and Samuel Thibault.

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

[PATCH] SPARC64: Respect gfp_t argument to dma_alloc_coherent().

2006-06-22T19:16:11+00:00

Using asm-generic/dma-mapping.h does not work because pushing
the call down to pci_alloc_coherent() causes the gfp_t argument
of dma_alloc_coherent() to be ignored.

Fix this by implementing things directly, and adding a gfp_t
argument we can use in the internal call down to the PCI DMA
implementation of pci_alloc_coherent().

This fixes massive memory corruption when using the sound driver
layer, which passes things like __GFP_COMP down into these
routines and (correctly) expects that to work.

This is a disk eater when sound is used, so it's pretty critical.

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

[PATCH] powerpc: Fix machine check problem on 32-bit kernels (CVE-2006-2448)

2006-06-20T08:54:52+00:00

This fixes a bug found by Dave Jones that means that it is possible
for userspace to provoke a machine check on 32-bit kernels.  This
also fixes a couple of other places where I found similar problems
by inspection.

Signed-off-by: Paul Mackerras 
Signed-off-by: Chris Wright

[PATCH] x86_64: Don't do syscall exit tracing twice

2006-06-05T17:18:14+00:00

This fixes a regression from the earlier DOS fix for non canonical
IRET addresses. It broke UML.

int_ret_from_syscall already does syscall exit tracing, so
no need to do it again in the caller.

This caused problems for UML and some other special programs doing
syscall interception.

Signed-off-by: Andi Kleen 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] x86_64: x86_64 add crashdump trigger points

2006-06-05T17:18:14+00:00

o Start booting into the capture kernel after an Oops if system is in a
  unrecoverable state. System will boot into the capture kernel, if one is
  pre-loaded by the user, and capture the kernel core dump.

o One of the following conditions should be true to trigger the booting of
  capture kernel.
        - panic_on_oops is set.
        - pid of current thread is 0
        - pid of current thread is 1
        - Oops happened inside interrupt context.

Signed-off-by: Vivek Goyal 
Signed-off-by: Andi Kleen 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Chris Wright

[PATCH] PowerMac: force only suspend-to-disk to be valid

2006-06-05T17:18:13+00:00

For a very long time, echoing 'standby' or 'mem' into /sys/power/state has
killed the machine on powerpc.  This patch fixes that.

This patch adds the .valid callback to pm_ops on PowerMac so that only the
suspend to disk state can be entered.  Note that just returning 0 would
suffice since the upper layers don't pass PM_SUSPEND_DISK down, but we
handle it there regardless just in case that changes.

Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Johannes Berg 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

[PATCH] MIPS: Fix branch emulation for floating-point exceptions.

2006-05-01T19:03:44+00:00

In the branch emulation for floating-point exceptions, __compute_return_epc
must determine for bc1f et al which condition code bit to test. This is
based on bits <4:2> of the rt field. The switch statement to distinguish
bc1f et al needs to use only the two low bits of rt, but the old code tests
on the whole rt field.  This patch masks off the proper bits.

Signed-off-by: Win Treese 
Signed-off-by: Ralf Baechle 
Signed-off-by: Greg Kroah-Hartman

[PATCH] MIPS: Fix tx49_blast_icache32_page_indexed.

2006-05-01T19:03:44+00:00

Fix the cache index value in tx49_blast_icache32_page_indexed().
This is damage by de62893bc0725f8b5f0445250577cd7a10b2d8f8 commit.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Ralf Baechle 
Signed-off-by: Greg Kroah-Hartman

[PATCH] Alpha: strncpy() fix

2006-05-01T19:03:43+00:00

As it turned out after recent SCSI changes, strncpy() was broken -
it mixed up the return values from __stxncpy() in registers $24 and $27.

Thanks to Mathieu Chouquet-Stringer for tracking down the problem
and providing an excellent test case.

Signed-off-by: Ivan Kokshaysky 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

[PATCH] x86_64: Fix a race in the free_iommu path.

2006-05-01T19:03:42+00:00

We do this by removing a micro-optimization that tries to avoid grabbing
the iommu_bitmap_lock spinlock and using a bus-locked operation.

This still races with other simultaneous alloc_iommu or free_iommu(size
> 1) which both use bus-unlocked operations.

The end result of this race is eventually ending
up with an iommu_gart_bitmap that has bits errornously set all over,
making large contiguous iommu space allocations fail with 'PCI-DMA:
Out of IOMMU space'.

Signed-off-by: Mike Waychison 
Signed-off-by: Andi Kleen 
Signed-off-by: Greg Kroah-Hartman