DMA to/from user buffers

From: Sebastian Heidl (heidl@zib.de)
Date: Tue Sep 04 2001 - 09:45:09 EST

Next message: Richard B. Johnson: "Re: [SOLVED + PATCH]: documented Oops running big-endian reiserfs on parisc architecture"
Previous message: Samium Gromoff: "rmap3 test results (fwd)"
Next in thread: Gerd Knorr: "Re: DMA to/from user buffers"
Reply: Gerd Knorr: "Re: DMA to/from user buffers"
Reply: Helge Hafting: "Re: DMA to/from user buffers"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Hi,

two questions about using an user-supplied buffer (e.g. malloced
in user space) for DMA transfers:

1. Is it possible ?
2. What restrictions/requirements apply for the buffer (alignment...) ?

Documentation/DMA-mapping.txt only talks about buffers allocated in
kernel space.

thanks,
_sh_

-- 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Next message: Richard B. Johnson: "Re: [SOLVED + PATCH]: documented Oops running big-endian reiserfs on parisc architecture"
Previous message: Samium Gromoff: "rmap3 test results (fwd)"
Next in thread: Gerd Knorr: "Re: DMA to/from user buffers"
Reply: Gerd Knorr: "Re: DMA to/from user buffers"
Reply: Helge Hafting: "Re: DMA to/from user buffers"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Fri Sep 07 2001 - 21:00:25 EST