Date: Mon, 17 Mar 2014 23:30:38 +0000 (UTC) From: Neel Natu <neel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r263280 - head/sys/amd64/vmm Message-ID: <201403172330.s2HNUcch012821@svn.freebsd.org>
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Author: neel Date: Mon Mar 17 23:30:38 2014 New Revision: 263280 URL: http://svnweb.freebsd.org/changeset/base/263280 Log: Notify vcpus participating in the rendezvous of the pending event to ensure that they execute the rendezvous function as soon as possible. Modified: head/sys/amd64/vmm/vmm.c Modified: head/sys/amd64/vmm/vmm.c ============================================================================== --- head/sys/amd64/vmm/vmm.c Mon Mar 17 23:21:31 2014 (r263279) +++ head/sys/amd64/vmm/vmm.c Mon Mar 17 23:30:38 2014 (r263280) @@ -1657,6 +1657,8 @@ void vm_smp_rendezvous(struct vm *vm, int vcpuid, cpuset_t dest, vm_rendezvous_func_t func, void *arg) { + int i; + /* * Enforce that this function is called without any locks */ @@ -1687,6 +1689,15 @@ restart: vm_set_rendezvous_func(vm, func); mtx_unlock(&vm->rendezvous_mtx); + /* + * Wake up any sleeping vcpus and trigger a VM-exit in any running + * vcpus so they handle the rendezvous as soon as possible. + */ + for (i = 0; i < VM_MAXCPU; i++) { + if (CPU_ISSET(i, &dest)) + vcpu_notify_event(vm, i, false); + } + vm_handle_rendezvous(vm, vcpuid); }
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