diff options
Diffstat (limited to 'i386/i386at/model_dep.c')
| -rw-r--r-- | i386/i386at/model_dep.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/i386/i386at/model_dep.c b/i386/i386at/model_dep.c index 6093a66c..209cfb14 100644 --- a/i386/i386at/model_dep.c +++ b/i386/i386at/model_dep.c @@ -180,10 +180,14 @@ void machine_init(void) *(unsigned short *)phystokv(0x472) = 0x1234; #endif /* MACH_HYP */ +#if VM_MIN_KERNEL_ADDRESS == 0 /* * Unmap page 0 to trap NULL references. + * + * Note that this breaks accessing some BIOS areas stored there. */ pmap_unmap_page_zero(); +#endif } /* Conserve power on processor CPU. */ |