diff options
Diffstat (limited to 'sys/pc98/i386/machdep.c')
| -rw-r--r-- | sys/pc98/i386/machdep.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sys/pc98/i386/machdep.c b/sys/pc98/i386/machdep.c index cadbba3..8c2479c 100644 --- a/sys/pc98/i386/machdep.c +++ b/sys/pc98/i386/machdep.c @@ -1294,7 +1294,7 @@ struct soft_segment_descriptor gdt_segs[] = { /* GPROC0_SEL 4 Proc 0 Tss Descriptor */ { 0x0, /* segment base address */ - sizeof(struct i386tss)-1,/* length - all address space */ + sizeof(struct i386tss)-1,/* length */ SDT_SYS386TSS, /* segment type */ 0, /* segment descriptor priority level */ 1, /* segment descriptor present */ @@ -1581,6 +1581,12 @@ getmemsize(int first) pmap_kenter(KERNBASE + pa, pa); /* + * Map the page at address zero for the bios code to use. + * Note that page zero is not in the general page pool. + */ + pmap_kenter(KERNBASE, 0); + + /* * if basemem != 640, map pages r/w into vm86 page table so * that the bios can scribble on it. */ @@ -1862,7 +1868,7 @@ physmap_done: /* * block out kernel memory as not available. */ - if (pa >= 0x100000 && pa < first) + if (pa >= KERNLOAD && pa < first) continue; page_bad = FALSE; |
