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-----Forwarded message from Mike Smith <[email protected]>-----
To: mdean <[email protected]>
cc: [email protected]
Subject: Re: free() in device drivers
From: Mike Smith <[email protected]>
>
> If I do a malloc (p, M_DEVBUF, M_NOWAIT);
>
> then find a problem in my attach routine, can I do a free(p, M_DEVBUF) to
> recover that memory?
No. In fact, the memory will remain allocated over even cold
reboots, and you will have to open the system, identify which SIMM the
memory was allocated on, remove it and wrap it in aluminium foil for
half an hour to discharge the DRAM capacitors and clear the allocation.
mike
-----End of forwarded message-----
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Matthew Hunt <[email protected]> * Think locally, act globally.
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