x86/kernel/ebda.c

1 // SPDX-License-Identifier: GPL-2.0
12  * are code), that must not be used by the kernel as available
13  * RAM.
20  * guess the reserved BIOS area by looking at the low BIOS RAM size
26  * - This code also contains a quirk for Dell systems that neglect
27  *   to reserve the EBDA area in the 'RAM size' value ...
29  * - The same quirk also avoids a problem with the AMD768MPX
34  * - Plus paravirt systems don't have a reliable value in the
35  *   'BIOS RAM size' pointer we can rely on, so we must quirk
43  * rarely a problem, as long as we have enough memory to install
70 	 * BIOS RAM size is encoded in kilobytes, convert it  in reserve_bios_regions()
97 	memblock_reserve(bios_start, 0x100000 - bios_start);  in reserve_bios_regions()