This bug exists in math emulation for powerpc.
The macro define are mainly used by multiplication.
When adding two unsigned operands ( r = x + y ),
the carry bit can be counted by whether r is less than x.
However, when adding three unsigned operands, this method does not work.
The original code
This bug exists in the emulation of floating point division for powerpc.
The original code cannot count the remainder correctly.
I can provide a test case to trigger this bug.
When use fdiv to count 1.1754941e-38f / 0.999f,
the result is expected to be 1.175494e-38f,
but we will get
On Sun, 2008-01-06 at 22:26 +0800, Liu Yu wrote:
This bug exists in the emulation of floating point division for powerpc.
The original code cannot count the remainder correctly.
I can provide a test case to trigger this bug.
When use fdiv to count 1.1754941e-38f / 0.999f,
the result
On Wed, Jan 02, 2008 at 10:42:08PM +1100, David Gibson wrote:
On Fri, Dec 21, 2007 at 03:29:22PM -0600, Olof Johansson wrote:
Hi,
On Fri, Dec 21, 2007 at 01:21:30PM +1100, David Gibson wrote:
Index: working-2.6/arch/powerpc/platforms/Kconfig
On 01/05/2008 03:29 AM, Arnd Bergmann wrote:
On Saturday 05 January 2008, Geoff Levand wrote:
+ struct layout {
+ struct ps3_system_bus_device dev;
+ } *p;
What's the point of this data structure? You don't use the
struct anywhere, and it only has one member, so
On 01/05/2008 03:56 AM, Arnd Bergmann wrote:
On Saturday 05 January 2008, Geoff Levand wrote:
From: Takashi Yamamoto [EMAIL PROTECTED]
Add PS3 logical performance monitor (lpm) device driver.
The PS3's LV1 hypervisor provides a Logical Performance Monitor that
abstarcts the Cell
On Sun, 2008-01-06 at 12:44 -0800, Dan Malek wrote:
While it's convenient, I still don't think kernel float
emulation should be a solution. The tools should
generate soft-float for the applications and libraries.
I agree, for deployement, it's definitely not a solution, though it's
very
On Jan 6, 2008, at 12:07 PM, Benjamin Herrenschmidt wrote:
It's nice to see somebody digging in that scary math emu stuff. If you
could also get rid of the warnings, it would be perfect :-)
Yes, it is :-) I didn't think it would have a life beyond MPC8xx.
that this code was lifted
On Sunday 06 January 2008, Geoff Levand wrote:
This mutex is documented as the 'open/close' mutex and you use it
to prevent concurrent execution of the open and close functions.
However, it's unclear what data structures are actually protected
by it.
I think this is the result of
On Sun, Jan 06, 2008 at 02:37:16PM +1100, David Gibson wrote:
out:
+ free((void *)file-dir);
That cast shouldn't be there.
It generates a constness warning otherwise. I was on the fence over
whether to just remove the constness (even though the data is never
modified during its
On Fri, Jan 04, 2008 at 03:27:39PM +1100, David Gibson wrote:
+ newfile = dtc_open_file(filename, searchptr);
+ if (!newfile) {
+ yyerrorf(Couldn't open \%s\: %s,
+filename, strerror(errno));
+ exit(1);
Use die() here, that's what it's for.
On Fri, Jan 04, 2008 at 03:30:33PM +1100, David Gibson wrote:
This is unequivocally wrong. boot_info should have information about
the contents of the blob, not state information like the error.
This blob is invalid *is* information about the contents of the blob.
If you're going to use an
Hi,
I have been investigating why I have not been able to get callgraph code for
OProfile on Cell to work correctly and I am pretty sure that I have run into
a problem that is common across all the Power platforms. (At least the other
ones I have looked at.) I have a simple test program
On Mon, 07 Jan 2008 07:49:33 +1100
Benjamin Herrenschmidt [EMAIL PROTECTED] wrote:
On Sun, 2008-01-06 at 12:44 -0800, Dan Malek wrote:
While it's convenient, I still don't think kernel float
emulation should be a solution. The tools should
generate soft-float for the applications and
Also check that __NR_syscalls has been updated appropriately.
Hopefully this will catch any out of order additions to the
table in the future.
Signed-off-by: Stephen Rothwell [EMAIL PROTECTED]
---
arch/powerpc/kernel/Makefile | 10 ++
arch/powerpc/kernel/systbl_chk.c | 58
This patch replaces my 2007-12-20 patch by the same title, and has to take
its place in the order of applying that whole series.
Further testing revealed a bug that resulted in regset-based core dumps of
32-bit processes on 64-bit kernels having r0..r3 cleared to zero. The fix
(interdiff from
Hi all
I need your suggession to write a driver with such requirements :-
On Initiation by the application of which key is pressed driver should
perform the task accordingly. There are 7 keys so seven different task the
driver will perform.
1 . I do not want to use any entry point such
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