disk: Avoid stack_hop() path if already on the extra stack

If CONFIG_ENTRY_EXTRASTACK is set (enabled by default) then the 16bit
disk interface code is already running on the extra stack and it is
not necessary to support stack switching on each disk request.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2 files changed
tree: e15e17c329bc21810abcfceb44761863e2fada58
  1. .gitignore
  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. docs/
  7. scripts/
  8. src/
  9. vgasrc/