> Anyway, Intel certainly seems to document that WC memory is serialized by > any access to UC memory.
I don't believe that is actually true on Pentium Pro at least. > So what started out as a "we can do accesses to the frame buffer more > efficiently without anybody ever even having to know or care" has > turned into a whole nightmare of people using it for other things, and > then you very much _do_ have to care! ] Notably graphics where 3Dfx lined the registers up specifically to make this work. We were also using it with I²O where it gave a small performance gain. Alan _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
