tree 222c2ce27f583cccd4c8e7fb14903870b36a2b45
parent 62b8e680e61d3f48f2a12ee248ca03ea8f376926
author H. Peter Anvin <hpa@linux.intel.com> 1238634508 -0700
committer H. Peter Anvin <hpa@zytor.com> 1239318491 -0700

x86, setup: "glove box" BIOS calls -- infrastructure

Impact: new interfaces (not yet used)

For all the platforms out there, there is an infinite number of buggy
BIOSes.  This adds infrastructure to treat BIOS interrupts more like
toxic waste and "glove box" them -- we switch out the register set,
perform the BIOS interrupt, and then restore the previous state.

LKML-Reference: <49DE7F79.4030106@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rjw@sisk.pl>