diff -urN linux-2.2.10/Documentation/memory.txt linux-2.2.10.SuSE/Documentation/memory.txt
--- linux-2.2.10/Documentation/memory.txt	Tue Dec 22 17:31:07 1998
+++ linux-2.2.10.SuSE/Documentation/memory.txt	Sun Jul  4 14:32:23 1999
@@ -54,3 +54,11 @@
 
 	* Try passing the "no-hlt" option to disable the potentially
           buggy HLT instruction in your CPU.
+
+	* Passing for example the "endbase=0x9F000" option to the kernel,
+	  you'll _force_ the kernel to not touch the memory between 0x9F000
+	  and 1Mbyte. As default the kernel reads the endbase limit from
+	  the BIOS. So you need to specify this option only if the BIOS
+	  does not provide the right information to the kernel (or if you
+	  don't have a BIOS at all :). You can discover the endbase value
+	  of your running kernel with this command `dmesg | grep endbase`.
diff -urN linux-2.2.10/arch/i386/kernel/setup.c linux-2.2.10.SuSE/arch/i386/kernel/setup.c
--- linux-2.2.10/arch/i386/kernel/setup.c	Tue Jun  8 19:43:21 1999
+++ linux-2.2.10.SuSE/arch/i386/kernel/setup.c	Sun Jul  4 14:35:00 1999
@@ -119,6 +119,8 @@
 #define RAMDISK_PROMPT_FLAG		0x8000
 #define RAMDISK_LOAD_FLAG		0x4000	
 
+#define BIOS_ENDBASE	0x9F000
+
 #ifdef	CONFIG_VISWS
 char visws_board_type = -1;
 char visws_board_rev = -1;
@@ -248,6 +250,7 @@
 
 static char command_line[COMMAND_LINE_SIZE] = { 0, };
        char saved_command_line[COMMAND_LINE_SIZE];
+unsigned long i386_endbase __initdata =  0;
 
 __initfunc(void setup_arch(char **cmdline_p,
 	unsigned long * memory_start_p, unsigned long * memory_end_p))
@@ -255,6 +258,7 @@
 	unsigned long memory_start, memory_end;
 	char c = ' ', *to = command_line, *from = COMMAND_LINE;
 	int len = 0;
+	int read_endbase_from_BIOS = 1;
 
 #ifdef CONFIG_VISWS
 	visws_get_board_type_and_rev();
@@ -323,6 +327,13 @@
 				}
 			}
 		}
+		else if (c == ' ' && !memcmp(from, "endbase=", 8))
+		{
+			if (to != command_line) to--;
+			i386_endbase = simple_strtoul(from+8, &from, 0);
+			i386_endbase += PAGE_OFFSET;
+			read_endbase_from_BIOS = 0;
+		}
 		c = *(from++);
 		if (!c)
 			break;
@@ -332,6 +343,29 @@
 	}
 	*to = '\0';
 	*cmdline_p = command_line;
+
+	if (read_endbase_from_BIOS)
+	{
+		/*
+		 * IBM messed up *AGAIN* in their thinkpad: 0xA0000 -> 0x9F000.
+		 * They seem to have done something stupid with the floppy
+		 * controller as well..
+		 * The amount of available base memory is now taken from 
+		 * WORD 40:13 in order to account for some recent systems, 
+		 * where its value is smaller than the standard BIOS_ENDBASE
+		 * (this was pointed out by Josef Moellers from
+		 * Siemens Paderborn (Germany) ).
+		 */
+		i386_endbase = (*(unsigned short *)__va(0x413)*1024)&PAGE_MASK;
+		if (!i386_endbase || i386_endbase > 0xA0000)
+		{
+			printk(KERN_NOTICE
+			       "endbase 0x%lx is weird so revert to %x\n",
+			       i386_endbase, BIOS_ENDBASE);
+			i386_endbase = BIOS_ENDBASE;
+		}
+		i386_endbase += PAGE_OFFSET;
+	}
 
 #define VMALLOC_RESERVE	(64 << 20)	/* 64MB for vmalloc */
 #define MAXMEM	((unsigned long)(-PAGE_OFFSET-VMALLOC_RESERVE))
diff -urN linux-2.2.10/arch/i386/kernel/smp.c linux-2.2.10.SuSE/arch/i386/kernel/smp.c
--- linux-2.2.10/arch/i386/kernel/smp.c	Wed Jun  2 20:29:27 1999
+++ linux-2.2.10.SuSE/arch/i386/kernel/smp.c	Sun Jul  4 14:32:23 1999
@@ -657,13 +657,14 @@
 	return virt_to_phys(trampoline_base);
 }
 
+extern unsigned long i386_endbase __initdata;
 /*
  *	We are called very early to get the low memory for the
  *	SMP bootup trampoline page.
  */
 unsigned long __init smp_alloc_memory(unsigned long mem_base)
 {
-	if (virt_to_phys((void *)mem_base) >= 0x9F000)
+	if (mem_base + PAGE_SIZE > i386_endbase)
 		panic("smp_alloc_memory: Insufficient low memory for kernel trampoline 0x%lx.", mem_base);
 	trampoline_base = (void *)mem_base;
 	return mem_base + PAGE_SIZE;
diff -urN linux-2.2.10/arch/i386/mm/init.c linux-2.2.10.SuSE/arch/i386/mm/init.c
--- linux-2.2.10/arch/i386/mm/init.c	Thu Jan 21 20:28:40 1999
+++ linux-2.2.10.SuSE/arch/i386/mm/init.c	Sun Jul  4 14:32:23 1999
@@ -382,6 +382,8 @@
 		printk(".\n");
 }
 
+extern unsigned long i386_endbase __initdata;
+
 __initfunc(void mem_init(unsigned long start_mem, unsigned long end_mem))
 {
 	unsigned long start_low_mem = PAGE_SIZE;
@@ -413,12 +415,7 @@
 #endif
 	start_mem = PAGE_ALIGN(start_mem);
 
-	/*
-	 * IBM messed up *AGAIN* in their thinkpad: 0xA0000 -> 0x9F000.
-	 * They seem to have done something stupid with the floppy
-	 * controller as well..
-	 */
-	while (start_low_mem < 0x9f000+PAGE_OFFSET) {
+	while (start_low_mem < i386_endbase) {
 		clear_bit(PG_reserved, &mem_map[MAP_NR(start_low_mem)].flags);
 		start_low_mem += PAGE_SIZE;
 	}
@@ -453,11 +450,12 @@
 #endif
 			free_page(tmp);
 	}
-	printk("Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init)\n",
+	printk("Memory: %luk/%luk available (%dk kernel code, %dk reserved (endbase 0x%lx), %dk data, %dk init)\n",
 		(unsigned long) nr_free_pages << (PAGE_SHIFT-10),
 		max_mapnr << (PAGE_SHIFT-10),
 		codepages << (PAGE_SHIFT-10),
 		reservedpages << (PAGE_SHIFT-10),
+		__pa(i386_endbase),
 		datapages << (PAGE_SHIFT-10),
 		initpages << (PAGE_SHIFT-10));