> Firstly a call is made to BIOS INT 15 AX=0xE820 in order to read the
> E820 map. A maximum of 32 blocks are supported by current kernels. The
> 'SMAP' signature is required and tested. In addition the SMAP signature
> is restored each call, although not required by the specification in order
> to handle some know BIOS bugs.
FYI, in OS/2, the E820 call is made only on machines with a Pentium Pro or
higher, because apparently (and this is my guess) there are some motherboards
out there with older CPUs that don't return a reliable result to the E820 call.
-- Timur Tabi - ttabi@interactivesi.com Interactive Silicon - http://www.interactivesi.com- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/