Memory Allocation

NTDEV
1

Hi
all i read Nick Ryan response.but…
IoAllocateMdl has "PAGE_SIZE * (65535 - sizeof(MDL)) / sizeof(ULONG_PTR) "
limitation (66 or 67 MB) (is in DDK help)

and i want 100MB

please help me.

2

Does that 100MB have to be nailed down all the time? If it does, you have a
real problem. 100MB is real close to the total size of NPP. If you
allocate that much nonpaged memory, (you may not be able to), you stand a
good chance of crashing the system as it runs out of memory it needs for
some critical purpose.

I would allocate paged memory, perhaps ofmr a user program, and only nail
down the parts I needed, for as short a time as possible.

Loren

----- Original Message -----
From: “Mohammad Tarhsaz”
To: “Windows System Software Developers Interest List”
Sent: Friday, August 22, 2003 3:26 AM
Subject: [ntdev] Memory Allocation

> Hi
> all i read Nick Ryan response.but…
> IoAllocateMdl has "PAGE_SIZE * (65535 - sizeof(MDL)) / sizeof(ULONG_PTR) "
> limitation (66 or 67 MB) (is in DDK help)
>
> and i want 100MB
>