Submit #1742
Updated by tuxillo over 2 years ago
Here's a patch for Page Attribute Table support I ported from FreeBSD quite a while back. I'm sending it to submit@ in case someone will get interested and deal w/ the cpu identification part (probably integrating the FreeBSD code for that too) so we can integrate it. It will get used more and more in new code and will significantly help porting. As you'll notice in pmap_init_pat() +#ifdef notyet + if (cpu_vendor_id != CPU_VENDOR_INTEL || + (I386_CPU_FAMILY(cpu_id) == 6 && I386_CPU_MODEL(cpu_id) >= 0xe)) { +#else + if (!0) { +#endif so we need at least I386_CPU_{FAMILY,MODEL} (to be found in i386/include/specialreg.h) and having the companion code would be nice too (ISTR it was straightforward but not trivial, not sure if I remember correctly now. Looks trivial enough :/) I *have* tried using the PMAP in mxge(4) so I don't think you'll get any panics ;) Aggelos