tree 532ec12d24a1c7c17d3250ccdb2b66ddc8804cff
parent 01522df346f846906eaf6ca57148641476209909
author H. Peter Anvin <hpa@zytor.com> 1238273606 -0700
committer H. Peter Anvin <hpa@zytor.com> 1238289500 -0700

x86, setup: preemptively save/restore edi and ebp around INT 15 E820

Impact: BIOS bugproofing

Since there are BIOSes known to clobber %ebx and %esi for INT 15 E820,
assume there is something out there clobbering %edi and/or %ebp too,
and don't wait for it to fail.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>