On Mon, Jul 15, 2013 at 7:56 PM, Parag Warudkar <[email protected]> wrote:
> On Mon, Jul 15, 2013 at 7:04 PM, Josh Triplett <[email protected]> wrote:
>
>> We do need to handle the case of a valid pointer into memory that e820
>> calls system RAM, as well as the case of a valid pointer into memory
>> reserved for the BIOS or similar, but not the case of an invalid
>> pointer.
>
> Would that be as simple as
>
> page_is_ram(
Damn shortcuts -
virt_addr = phys_to_virt(image->base_address);
if(page_is_ram(virt_to_page(virt_addr))) {
//direct read from virt addr
}
Would that suffice for the System RAM case or some other MM trickery
is involved?
Thanks,
Parag
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
