Module Name: src Committed By: martin Date: Thu Feb 27 18:23:10 UTC 2020
Modified Files: src/sys/arch/powerpc/ibm4xx [netbsd-9]: pmap.c Log Message: Pull up following revision(s) (requested by rin in ticket #731): sys/arch/powerpc/ibm4xx/pmap.c: revision 1.80 sys/arch/powerpc/ibm4xx/pmap.c: revision 1.77 sys/arch/powerpc/ibm4xx/pmap.c: revision 1.78 sys/arch/powerpc/ibm4xx/pmap.c: revision 1.79 Fix NULL dereference; "pap" argument of pmap_extract(9) can be NULL. - Fix off-by-one error for ctx (ASID). - Note that NUM_CTX = 256 = 0 stands for disabling protection by ASID. Clear ti_ctx when flushing a TLB entry for clarity. - In ppc4xx_tlb_find_victim(), mark kernel stack page TLBF_REF instead of TLBF_USED. This should be originally intended behavior of this code segment, because - TLBF_USED is already checked just before, so marking this page TLBF_USED is no-op. - TLBF_REF flag exempts that page from being flushed from TLB in next scan, when kernel stack may be still there with high probability. To generate a diff of this commit: cvs rdiff -u -r1.76 -r1.76.20.1 src/sys/arch/powerpc/ibm4xx/pmap.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.