www.linuxcd.cz + mem

[David Trcka]

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On Fri, 17 Aug 2001, Milan Kerslager wrote:

>                  * "mem=nopentium" disables the 4MB page tables.
>                  * "mem=XXX[kKmM]" defines a memory region from HIGH_MEM
>                  * to <mem>, overriding the bios size.
>                  * "mem=XXX[KkmM]@XXX[KkmM]" defines a memory region from
>                  * <start> to <start>+<mem>, overriding the bios size.
>
Tak jo, donutil jste me :)

lib/cmdline.c:

unsigned long long memparse (char *ptr, char **retptr)
{
        unsigned long long ret = simple_strtoull (ptr, retptr, 0);

        switch (**retptr) {
        case 'G':
        case 'g':
                ret <<= 10;
        case 'M':
        case 'm':
                ret <<= 10;
        case 'K':
        case 'k':
                ret <<= 10;
                (*retptr)++;
        default:
                break;
        }
        return ret;
}

Jinymi slovy nic se nerika o tom, co ma byt ZA tou definici, takze klidne
muzu napsat mem=128megabajtu a zpracuje se to spravne. Jedina vyjimka je
tvar mem=xxxM na yyyM (vyznam je tam popsan take, ale jinde), tam MUSI
nasledujici znak za [kKmMgG] byt '@'.

- -- 
    David Trcka, network administrator
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