On Tue, Jun 9, 2009 at 6:32 PM, H. Peter Anvin<hpa@xxxxxxxxxxxxxxx> wrote: > x86 cannot generate full 64-bit addresses; this patch clamps iomem > addresses to the accessible range. > > I wanted to post it for review before committing it, however; comments > would be appreciated, especially of the kind "this is done too early/too > late/in the wrong place/incorrectly". | --- a/arch/x86/kernel/cpu/common.c | +++ b/arch/x86/kernel/cpu/common.c | @@ -839,6 +839,9 @@ static void __cpuinit identify_cpu(struct cpuinfo_x86 *c) | #if defined(CONFIG_NUMA) && defined(CONFIG_X86_64) | numa_add_cpu(smp_processor_id()); | #endif |+ |+ /* Cap the iomem address space to what is addressable on all CPUs */ |+ iomem_resource.end &= (1ULL << c->x86_phys_bits) - 1; | } | do we need do that on every cpu? looks like we could do that in identify_boot_cpu. YH -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
