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I have grabbed 128 Megs using,
in main.c right after memory_start = kmem_cache_init(...)
CEB_SHM_Start = memory_start;
memory_start += CEM_SHM_Size;
This seems to alloc the memory for me but I can't seem to get a
pointer in user space to map to the location in CEB_SHM_Start. Could
you send a snippet of code that worked for you? I EXPORTED the CEB
symbols and can access them from my driver, using "High Shared
memory, the less than 4 Meg way" I pass the Start address to user
space and try to mmap from there with no luck.
The idea here is to use High Shared memory as a "Command and Control"
block to issue commands to the driver and use the Lower Major Memory
block grabbed from the kernel data space as a Data block to return the
recorded data. This lets me have a know area to place the Data block
address into that can be passed into user space.
- - Michael Wyrick
> -----Original Message-----
> From: SteenbeckDigital [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, June 16, 1999 2:29 AM
> To: Michael Wyrick (rtl)
> Subject: [rtl] Large shared memory Blocks
>
>
> Hi Michael
>
> I myself patch the kernel slightly and grab the
> memory before the memory management sees it.
> This is the quick and dirty way, but will go around
> the 4MB border
>
> Jens Michaelsen
>
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