Merge branch 'linus' into cpus4096

[pandora-kernel.git] / arch / x86 / kernel / head32.c

diff --git a/arch/x86/kernel/head32.c b/arch/x86/kernel/head32.c
index c216d3c..fa1d25d 100644 (file)
--- a/arch/x86/kernel/head32.c
+++ b/arch/x86/kernel/head32.c
@@ -13,56 +13,6 @@
 #include <asm/e820.h>
 #include <asm/bios_ebda.h>
 
-#define BIOS_LOWMEM_KILOBYTES 0x413
-
-/*
- * The BIOS places the EBDA/XBDA at the top of conventional
- * memory, and usually decreases the reported amount of
- * conventional memory (int 0x12) too. This also contains a
- * workaround for Dell systems that neglect to reserve EBDA.
- * The same workaround also avoids a problem with the AMD768MPX
- * chipset: reserve a page before VGA to prevent PCI prefetch
- * into it (errata #56). Usually the page is reserved anyways,
- * unless you have no PS/2 mouse plugged in.
- */
-static void __init reserve_ebda_region(void)
-{
-       unsigned int lowmem, ebda_addr;
-
-       /* To determine the position of the EBDA and the */
-       /* end of conventional memory, we need to look at */
-       /* the BIOS data area. In a paravirtual environment */
-       /* that area is absent. We'll just have to assume */
-       /* that the paravirt case can handle memory setup */
-       /* correctly, without our help. */
-       if (paravirt_enabled())
-               return;
-
-       /* end of low (conventional) memory */
-       lowmem = *(unsigned short *)__va(BIOS_LOWMEM_KILOBYTES);
-       lowmem <<= 10;
-
-       /* start of EBDA area */
-       ebda_addr = get_bios_ebda();
-
-       /* Fixup: bios puts an EBDA in the top 64K segment */
-       /* of conventional memory, but does not adjust lowmem. */
-       if ((lowmem - ebda_addr) <= 0x10000)
-               lowmem = ebda_addr;
-
-       /* Fixup: bios does not report an EBDA at all. */
-       /* Some old Dells seem to need 4k anyhow (bugzilla 2990) */
-       if ((ebda_addr == 0) && (lowmem >= 0x9f000))
-               lowmem = 0x9f000;
-
-       /* Paranoia: should never happen, but... */
-       if ((lowmem == 0) || (lowmem >= 0x100000))
-               lowmem = 0x9f000;
-
-       /* reserve all memory between lowmem and the 1MB mark */
-       reserve_early(lowmem, 0x100000, "BIOS reserved");
-}
-
 void __init i386_start_kernel(void)
 {
        reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS");
@@ -76,7 +26,8 @@ void __init i386_start_kernel(void)
                reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
        }
 #endif
-       reserve_early(__pa_symbol(&_end), init_pg_tables_end, "INIT_PG_TABLE");
+       reserve_early(init_pg_tables_start, init_pg_tables_end,
+                       "INIT_PG_TABLE");
 
        reserve_ebda_region();