Greetings, everyone,
I'm trying to save some data block from a memory mapped device into a
file - real fast, i.e., without any copying.
My approach so far was to get a pointer to the io memory via mmap-ing
/dev/mem, and then writing this pointer to a file (in user space).
This works, if I don't
On Mon, 2009-08-03 at 12:57 -0500, Dave Kleikamp wrote:
cpu_last_thread_in_core(cpu) is a moving target. You want something
like:
cpu = cpu_first_thread_in_core(cpu);
last = cpu_last_thread_in_core(cpu);
while (cpu = last) {
__clear_bit(id, stale_map[cpu]);
cpu++;
}
Oh okay, I didnt think anybody would need it :)
= bootm 200 - 300
## Booting image at 0200 ...
Image Name: Linux-2.6.30.4
Created: 2009-08-04 7:06:18 UTC
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size:3978238 Bytes = 3.8 MB
Load
Additional information:
The kernel fault already happens in 2.6.25
The driver works fine in 2.6.24
(Interrupt available in /proc/interrupts
and
/sys/class/uio/uio0)
Are there changes in 2.6.25 which could cause the kernel fault?
Any hint is appreaciated!
Thx and kind regards
Frank
Anton Vorontsov avoront...@ru.mvista.com wrote on 15/07/2009 00:09:31:
On Tue, Jul 14, 2009 at 11:20:13PM +0200, Joakim Tjernlund wrote:
[...]
But any users of the legacy bindings should be in-tree.
ehh, it was working until you made it OF only. Why do call the native
way legacy? It is
On Tue, 2009-08-04 at 19:13 +0530, Sachin Sant wrote:
Forgot to copy netdev in my original message. Forwarding ..
I have a power6 blade [IBM,7998-61X] running 2.6.31-rc5-git2
kernel (a33a052f19a21d727847391c8c1aff3fb221c472). After some
period of inactivity the machine drops into xmon with
This patch fixes the napi list handling when an ehea interface is shut down to
avoid corruption of the napi list.
Signed-off-by: Hannes Hering heri...@de.ibm.com
---
diff -Nurp -X dontdiff linux-2.6.31-rc5/drivers/net/ehea/ehea.h
patched_kernel/drivers/net/ehea/ehea.h
---
On Tue, Aug 04, 2009 at 03:38:40PM +0200, Joakim Tjernlund wrote:
Anton Vorontsov avoront...@ru.mvista.com wrote on 15/07/2009 00:09:31:
On Tue, Jul 14, 2009 at 11:20:13PM +0200, Joakim Tjernlund wrote:
[...]
But any users of the legacy bindings should be in-tree.
ehh, it was
Anton Vorontsov avoront...@ru.mvista.com wrote on 04/08/2009 16:22:50:
On Tue, Aug 04, 2009 at 03:38:40PM +0200, Joakim Tjernlund wrote:
Anton Vorontsov avoront...@ru.mvista.com wrote on 15/07/2009 00:09:31:
On Tue, Jul 14, 2009 at 11:20:13PM +0200, Joakim Tjernlund wrote:
[...]
* wilbur.chan | 2009-08-02 09:25:43 [+0800]:
Hi, Sebastian,
Hi Wilbur,
In your patch of Booke support for kexec , it setup a 1GB TMP mapping
and jump to it.
But I saw that, the max size for an e500 entry is 256M??so I changed
your code to setup 4*256M entries, and it works well on mpc8541.
The
From: Michel Dänzer daen...@vmware.com
Map the GART table uncached, so we don't always need to flush the CPU caches
explicitly after updates.
Signed-off-by: Michel Dänzer daen...@vmware.com
---
drivers/char/agp/uninorth-agp.c | 33 +
1 files changed, 25
From: Michel Dänzer daen...@vmware.com
Signed-off-by: Michel Dänzer daen...@vmware.com
---
drivers/char/agp/uninorth-agp.c | 64 +++
1 files changed, 11 insertions(+), 53 deletions(-)
diff --git a/drivers/char/agp/uninorth-agp.c
From: Michel Dänzer daen...@vmware.com
Using the radeon KMS test functionality, I verified that the AGP bridge of the
Intrepid2 chipset in my PowerBook supports aperture sizes up to 256M. So allow
aperture sizes up to 256M on pre-U3 bridges as well, and bump the default size
to 256M. It's
I've tried kexec on e300 core which should be easy since it is possible
to disable the MMU on that core. However it does not work.
Once I disable the MMU, I can't access my MBAR and print chars on the
serial port. Is this normal or do I have still some caches on?
After I've setup two BATs one for
On Wednesday 29 July 2009, Anton Vorontsov wrote:
platform_data is overkill for m25p80 chips, the
driver only needs to know exact chip model, and that's what device
tables are for.
To be fair, the platform_data also supports partitioning
and labeling e.g. for cmdlinepart ... though I'd
On Wednesday 29 July 2009, Ben Dooks wrote:
struct spi_driver {
+ const struct spi_device_id *id_table;
+ int (*probe_id)(struct spi_device *spi,
+ const struct spi_device_id *id);
how about leaving it at just probe
On Thursday 30 July 2009, Anton Vorontsov wrote:
This patch converts the m25p80 driver so that now it uses .id_table
for device matching, making it properly detect devices on OpenFirmware
platforms (prior to this patch the driver misdetected non-JEDEC chips,
seeing all chips as m25p80).
I
On Mon, 03 Aug 2009 09:13:37 +1000
Benjamin Herrenschmidt b...@kernel.crashing.org wrote:
On Sun, 2009-08-02 at 10:52 +0200, Stef Simoens wrote:
Hey Benjamin,
Thanks for the bisection. I'll have a look when I'm back from skiing :-)
In the meantime, maybe Fujita has an idea ?
The commit
On Wed, 2009-08-05 at 10:04 +0900, FUJITA Tomonori wrote:
Looks like that READ CAPACITY fails. We use kmalloc'ed buffer for READ
CAPACITY so I'm not sure about an alignment issue that you mentioned
in this thread earlier.
You said your machine with a MESH appears to work. Did you confirm
On Tue, Aug 04, 2009 at 02:23:16AM +0530, K.Prasad wrote:
On Fri, Jul 31, 2009 at 04:10:13PM +1000, David Gibson wrote:
On Mon, Jul 27, 2009 at 05:41:52AM +0530, K.Prasad wrote:
edited
Reasons
- Signal delivery before execution of instruction requires complex
On Tue, Aug 04, 2009 at 02:29:38AM +0530, K.Prasad wrote:
On Fri, Jul 31, 2009 at 04:16:46PM +1000, David Gibson wrote:
On Mon, Jul 27, 2009 at 05:43:17AM +0530, K.Prasad wrote:
[snip]
+ /* Verify if dar lies within the address range occupied by the symbol
+ * being watched. Since we
Introduced a temporary variable into our iterating over the list cpus
that are threads on the same core. For some reason Ben forgot how for
loops work.
Signed-off-by: Kumar Gala ga...@kernel.crashing.org
---
arch/powerpc/mm/mmu_context_nohash.c |9 +
1 files changed, 5
On Mon, Aug 3, 2009 at 12:46 PM, Albrecht Dreßalbrecht.dr...@arcor.de wrote:
Am 03.08.09 19:50 schrieb(en) Grant Likely:
Just about all mpc5200 device trees have the fsl,has-wdt property on GPT0
even when it isn't used as a watchdog.
Sorry, I do not understand... The file
Now swiotlb_pci_dma_ops is identical to swiotlb_dma_ops; we can use
swiotlb_dma_ops with any devices. This removes swiotlb_pci_dma_ops.
Signed-off-by: FUJITA Tomonori fujita.tomon...@lab.ntt.co.jp
Acked-by: Becky Bruce bec...@kernel.crashing.org
---
arch/powerpc/include/asm/swiotlb.h |
This is the second version of the patchset to convert POWERPC to use
asm-generic/dma-mapping-common.h:
http://marc.info/?l=linux-kernelm=124840628128189w=2
There are some minor changes since the first version are:
- removed unused CONFIG_PPC_NEED_DMA_SYNC_OPS [5/7] (Becky pointed
out).
-
Signed-off-by: FUJITA Tomonori fujita.tomon...@lab.ntt.co.jp
Acked-by: Becky Bruce bec...@kernel.crashing.org
---
arch/powerpc/Kconfig |6 +-
arch/powerpc/include/asm/dma-mapping.h | 242 +---
2 files changed, 7 insertions(+), 241 deletions(-)
POWERPC needs this hook. SPARC could use it too.
Signed-off-by: FUJITA Tomonori fujita.tomon...@lab.ntt.co.jp
Acked-by: Becky Bruce bec...@kernel.crashing.org
---
include/linux/dma-mapping.h |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/linux/dma-mapping.h
This converts uses dma_map_ops struct (in include/linux/dma-mapping.h)
instead of POWERPC homegrown dma_mapping_ops.
Signed-off-by: FUJITA Tomonori fujita.tomon...@lab.ntt.co.jp
Acked-by: Becky Bruce bec...@kernel.crashing.org
---
arch/powerpc/include/asm/device.h |4 +-
Signed-off-by: FUJITA Tomonori fujita.tomon...@lab.ntt.co.jp
---
arch/powerpc/include/asm/dma-mapping.h |5 +
arch/powerpc/kernel/dma-swiotlb.c |3 ++-
2 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/include/asm/dma-mapping.h
Signed-off-by: FUJITA Tomonori fujita.tomon...@lab.ntt.co.jp
---
arch/powerpc/Kconfig |1 +
arch/powerpc/include/asm/dma-mapping.h | 11 ++-
arch/powerpc/kernel/dma.c | 11 +++
3 files changed, 22 insertions(+), 1 deletions(-)
diff --git
This patch adds max_direct_dma_addr to struct dev_archdata to remove
addr_needs_map in struct dma_mapping_ops. It also converts
dma_capable() to use max_direct_dma_addr.
max_direct_dma_addr is initialized in pci_dma_dev_setup_swiotlb(),
called via ppc_md.pci_dma_dev_setup hook.
For further
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