How to allocate many a small physical buffer that is below 4G address in 64 bit system?

Hi:
I need to allocate many a physical buffer(size:64byte) that is below 4G address in 64 bit system.
I can use ExAllocatePoolWithTag() to do this in 32 bit system.
But in 64 bit system, ExAllocatePoolWithTag(), it seem not to make sure the physical address is below 4G.
How to do this?

Use MmAllocateContiguousMemory
https://msdn.microsoft.com/en-us/library/windows/hardware/ff554460%28v=vs.85%29.aspx?f=255&MSPPError=-2147217396 or one of its variants. Allocate a page at a time, then break the page into 64 buffers.
You will need your own management functions for allocating and freeing individual buffers. These can be called directly or you can create allocate and free routines to use with a lookaside list (see ExInitializeNPagedLookasideList).
Don Burn Windows Driver Consulting Website: http://www.windrvr.com

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From: [email protected]
To: [email protected]
Subject: How can I get a small window to open when a link is clicked (AS2)
Re: How can I get a small window to open when a link is clicked (AS2) created by Ned Murphy in Flash Pro - General - View the full discussion
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Attachments:
channels definition and pattern execution test x.vi ‏76 KB

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How to allocate many a small physical buffer that is below 4G address in 64 bit system?

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