Great, thanks a lot. Now I understand what's happening. It was
actually calling um_vmalloc
Olivier
On 7 avr. 06, at 01:42, Jeff Dike wrote:
On Fri, Apr 07, 2006 at 02:20:00AM +0200, Blaisorblade wrote:
No, I made it "greater than 4k" in 2.4.24 time... in fact it's what's
happening to h
On Fri, Apr 07, 2006 at 02:20:00AM +0200, Blaisorblade wrote:
> No, I made it "greater than 4k" in 2.4.24 time... in fact it's what's
> happening to him (see his last mail):
Oh yeah. In that case, the memset thing I mentioned earlier might help.
Jeff
--
On Wednesday 05 April 2006 20:18, Jeff Dike wrote:
> On Wed, Apr 05, 2006 at 07:16:22PM +0200, Olivier Crameri wrote:
> > Unfortunately, I'm having some weird issues that I can't really
> > understand. I can read the file using fread, but only in a buffer
> > that I allocated using um_kmalloc. If I
Then, when I use fread to read
my file into this buffer, if I read a small number of bytes, it
works.
However when I try to fread the entire file (38k), fread returns 0.
What's the break point between working and non-working?
It looks like it's on a page boundary. 4095 bytes is ok, 4096 i
On Wed, Apr 05, 2006 at 10:20:44PM +0200, Olivier Crameri wrote:
> Thanks for the answer. I bumped CONFIG_KERNEL_STACK_ORDER to 3, but it
> doesn't help.
I didn't think so, since the symptoms were wrong. However, keep that
in the back of your mind since you're dealing with some piggy parts of
lib
Thanks for the answer. I bumped CONFIG_KERNEL_STACK_ORDER to 3, but it
doesn't help.
I have a system call that does nothing but execute my code to parse my
file in the host.
When I said that using malloc didn't work, I meant the following: I'm
using malloc to allocate a buffer in the UML kernel. I
On Wed, Apr 05, 2006 at 07:16:22PM +0200, Olivier Crameri wrote:
> Unfortunately, I'm having some weird issues that I can't really
> understand. I can read the file using fread, but only in a buffer
> that I allocated using um_kmalloc. If I use a buffer allocated by
> malloc, the fread fails.
what about this?
http://user-mode-linux.sourceforge.net/iomem.html
Olivier Crameri wrote:
> Hi,
>
> I'm currently working on a project in which we are using UML to access
> the host os and perform some operations.
> More precisely, we would like to have a system call in UML that parses
> a file i
well there are several examples of this in the arch/um/drivers area.
_user.c and _kern.c break out the userspace and
kernel space parts of UML's dual personality.
Olivier Crameri wrote:
> Well, yes, I could use this.
>
> But what I'm actually trying to understand is how to properly execute
> regul
Well, yes, I could use this.
But what I'm actually trying to understand is how to properly execute
regular C within the UML kernel to access the host OS.
Thks,
Olivier
On 5 avr. 06, at 19:18, D. Bahi wrote:
what about this?
http://user-mode-linux.sourceforge.net/iomem.html
Olivier Crame
Hi,
I'm currently working on a project in which we are using UML to
access the host os and perform some operations.
More precisely, we would like to have a system call in UML that
parses a file in the host os.
Since the UML kernel is a host process, I naively thought that I
could use regu
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