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13902 Fix for 13717 may break 8-disk raidz2
13915 installctx() blocking allocate causes problems
Portions contributed by: Jerry Jelinek <gjelinek@gmail.com>
Change-Id: I934d69946cec42630fc541fa8c7385b862b69ca2


2199         vm_thread_ctx_t vtc;
2200         int affinity_type = CPU_CURRENT;
2201 
2202         if (vcpuid < 0 || vcpuid >= vm->maxcpus)
2203                 return (EINVAL);
2204         if (!CPU_ISSET(vcpuid, &vm->active_cpus))
2205                 return (EINVAL);
2206         if (CPU_ISSET(vcpuid, &vm->suspended_cpus))
2207                 return (EINVAL);
2208 
2209         pmap = vmspace_pmap(vm->vmspace);
2210         vcpu = &vm->vcpu[vcpuid];
2211         vme = &vcpu->exitinfo;
2212 
2213         vcpu_ustate_change(vm, vcpuid, VU_EMU_KERN);
2214 
2215         vtc.vtc_vm = vm;
2216         vtc.vtc_vcpuid = vcpuid;
2217         vtc.vtc_status = 0;
2218         installctx(curthread, &vtc, vmm_savectx, vmm_restorectx, NULL, NULL,
2219             NULL, vmm_freectx);
2220 
2221         error = vm_entry_actions(vm, vcpuid, entry, vme);
2222         if (error != 0) {
2223                 goto exit;
2224         }
2225 
2226 restart:
2227         error = vm_loop_checks(vm, vcpuid, vme);
2228         if (error != 0) {
2229                 goto exit;
2230         }
2231 
2232         thread_affinity_set(curthread, affinity_type);
2233         /*
2234          * Resource localization should happen after the CPU affinity for the
2235          * thread has been set to ensure that access from restricted contexts,
2236          * such as VMX-accelerated APIC operations, can occur without inducing
2237          * cyclic cross-calls.
2238          *
2239          * This must be done prior to disabling kpreempt via critical_enter().




2199         vm_thread_ctx_t vtc;
2200         int affinity_type = CPU_CURRENT;
2201 
2202         if (vcpuid < 0 || vcpuid >= vm->maxcpus)
2203                 return (EINVAL);
2204         if (!CPU_ISSET(vcpuid, &vm->active_cpus))
2205                 return (EINVAL);
2206         if (CPU_ISSET(vcpuid, &vm->suspended_cpus))
2207                 return (EINVAL);
2208 
2209         pmap = vmspace_pmap(vm->vmspace);
2210         vcpu = &vm->vcpu[vcpuid];
2211         vme = &vcpu->exitinfo;
2212 
2213         vcpu_ustate_change(vm, vcpuid, VU_EMU_KERN);
2214 
2215         vtc.vtc_vm = vm;
2216         vtc.vtc_vcpuid = vcpuid;
2217         vtc.vtc_status = 0;
2218         installctx(curthread, &vtc, vmm_savectx, vmm_restorectx, NULL, NULL,
2219             NULL, vmm_freectx, NULL);
2220 
2221         error = vm_entry_actions(vm, vcpuid, entry, vme);
2222         if (error != 0) {
2223                 goto exit;
2224         }
2225 
2226 restart:
2227         error = vm_loop_checks(vm, vcpuid, vme);
2228         if (error != 0) {
2229                 goto exit;
2230         }
2231 
2232         thread_affinity_set(curthread, affinity_type);
2233         /*
2234          * Resource localization should happen after the CPU affinity for the
2235          * thread has been set to ensure that access from restricted contexts,
2236          * such as VMX-accelerated APIC operations, can occur without inducing
2237          * cyclic cross-calls.
2238          *
2239          * This must be done prior to disabling kpreempt via critical_enter().