Module Name: src Committed By: rin Date: Thu Sep 10 04:31:55 UTC 2020
Modified Files: src/sys/arch/powerpc/ibm4xx: pmap.c Log Message: Real fix for pmap_procwr(), attempted in revs 1.85 and 1.87: http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/powerpc/ibm4xx/pmap.c#rev1.85 http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/powerpc/ibm4xx/pmap.c#rev1.87 ibm4xx has VIPT icache and operations in pmap_procwr() should be done with DMMU enabled (write back dcache into memory and invalidate icache). When p == curproc, this is trivial. However, p != curproc needs a special care; we cannot rely upon TLB miss handler in user context. Therefore, extract pa and operate against it. Note that va below VM_MIN_KERNEL_ADDRESS (== 2GB at the moment) is reserved for direct mapping. Tested by gdb with WIP software single stepping for ibm4xx. To generate a diff of this commit: cvs rdiff -u -r1.93 -r1.94 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.