diff options
| author | Michael Brown | 2005-05-09 15:25:43 +0200 |
|---|---|---|
| committer | Michael Brown | 2005-05-09 15:25:43 +0200 |
| commit | b2869ed6b82ef4419aa5bb790e6e47c17960c47d (patch) | |
| tree | 1541770ac58f1145c4d0dd8884820c8c95020431 /src/core/buffer.c | |
| parent | Modified to use physical addresses, and to not assume that we can directly (diff) | |
| download | ipxe-b2869ed6b82ef4419aa5bb790e6e47c17960c47d.tar.gz ipxe-b2869ed6b82ef4419aa5bb790e6e47c17960c47d.tar.xz ipxe-b2869ed6b82ef4419aa5bb790e6e47c17960c47d.zip | |
Added explanatory comment.
Diffstat (limited to 'src/core/buffer.c')
| -rw-r--r-- | src/core/buffer.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/core/buffer.c b/src/core/buffer.c index da75eb65..5254c64e 100644 --- a/src/core/buffer.c +++ b/src/core/buffer.c @@ -14,6 +14,13 @@ * which assemble a file into a single contiguous block. The whole * block is then passed to the image loader. * + * + * Note that the rather convoluted way of manipulating the buffer + * descriptors (using copy_{to,from}_phys rather than straightforward + * pointers) is needed to cope with operation as a PXE stack, when we + * may be running in real mode or 16-bit protected mode, and therefore + * cannot directly access arbitrary areas of memory. + * */ #include "stddef.h" |