Benjamin Herrenschmidt <b...@kernel.crashing.org> wrote on 07/10/2009 23:18:21: > > On Wed, 2009-10-07 at 22:46 +0200, Joakim Tjernlund wrote: > > dcbz, dcbf, dcbi, dcbst and icbi do not set DAR when they > > cause a DTLB Error. Dectect this by tagging DAR with 0x00f0 > > at every exception exit that modifies DAR. > > Test for DAR=0x00f0 in DataTLBError and bail > > to handle_page_fault(). > > Why not -1 ? :-)
Because 0x00f0 is already in use in the TLB fast path, saves one insn. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
