Module Name: src Committed By: maxv Date: Mon Feb 18 12:17:45 UTC 2019
Modified Files: src/sys/dev/nvmm: nvmm.c src/sys/dev/nvmm/x86: nvmm_x86_svm.c nvmm_x86_vmx.c Log Message: Ah, finally found you. Fix scheduling bug in NVMM. When processing guest page faults, we were calling uvm_fault with preemption disabled. The thing is, uvm_fault may block, and if it does, we land in sleepq_block which calls mi_switch; so we get switched away while we explicitly asked not to be. From then on things could go really wrong. Fix that by processing such faults in MI, where we have preemption enabled and are allowed to block. A KASSERT in sleepq_block (or before) would have helped. To generate a diff of this commit: cvs rdiff -u -r1.7 -r1.8 src/sys/dev/nvmm/nvmm.c cvs rdiff -u -r1.26 -r1.27 src/sys/dev/nvmm/x86/nvmm_x86_svm.c cvs rdiff -u -r1.6 -r1.7 src/sys/dev/nvmm/x86/nvmm_x86_vmx.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.