Hello All, I'm reading x86_64 source code and trying to understand where are fixmaps space in the virtual memory space. If I understand correctly (but i'm really not sure about it), fixmap space is after vsyscall space. As Documentation/x86/x86_64/mm.txt says vsyscall virtual space is:
ffffffffff600000 - ffffffffffdfffff (=8 MB) vsyscalls With 'earlyprintk' i got FIXADDR_START and FIXADDR_TOP and they are: FIXADDR_START - 0xffffffffff779000L FIXADDR_TOP - 0xffffffffff7ff000L with these addressess FIXADDR_START/FIXADDR_TOP overlap vsyscalls area. Is it correct case that fixmaps are in vsyscal virtual memory space or I'm wrong somewhere? Thank you. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/