Re: [RFC][Patch] IBM Real-Time "SMI Free" mode driver -v5

Randy Dunlap
2010-09-24T21:35:30Z

On Fri, 24 Sep 2010 14:30:09 -0700 Vernon Mauery wrote:

> >> +/* The RTL table as presented by the EBDA: */
> >> +struct ibm_rtl_table {
> >> + char signature[5];
> >
> >Question: are all 5 bytes of signature[] used? It looks like the search code
> >only checks for 32 bits of signature (and the last byte can be garbage?).
>
> Technically, the 5 bytes are supposed to be "_RTL_", but it is a lot
> easier to just check _RTL since we can do that with a single read. I
> suppose I could do a 64-bit read and mask the bits that matter. Do you
> have an opinion on the matter?

I would just comment that the first 4 bytes are checked.

---
~Randy
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