david/ipxe
david/ipxe
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My fork of git://git.ipxe.org/ipxe.git, it is used for my netboot environment at home.
This repository has been archived on 2020-12-06. You can view files and clone it, but cannot push or open issues or pull requests.
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4a8a7bd91a
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Michael Brown 4a8a7bd91a [iobuf] Allocate I/O buffer descriptor separately to conserve aligned memory 
I/O buffers are allocated on aligned boundaries.  The I/O buffer
descriptor (the struct io_buffer) is currently attached to the end of
the I/O buffer.  When the size of the buffer is close to its
alignment, this can waste large amounts of aligned memory.

For example, a network card using 2048-byte receive buffers will end
up allocating 2072 bytes on a 2048-byte boundary.  This effectively
wastes 50% of the available memory.

Improve the situation by allocating the descriptor separately from the
main I/O buffer if inline allocation would cause the total allocated
size to cross the alignment boundary.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2012-07-08 17:54:53 +01:00
contrib [contrib] Update bochsrc.txt to latest version of bochs 2012-06-06 20:37:53 +01:00
src [iobuf] Allocate I/O buffer descriptor separately to conserve aligned memory 2012-07-08 17:54:53 +01:00
COPYING Initial revision 2005-05-17 16:44:57 +00:00
COPYRIGHTS [build] Rename gPXE to iPXE 2010-04-19 23:43:39 +01:00
README [doc] Re-add README file 2010-05-28 00:03:47 +01:00

README 

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org