C++ (Cpp) vmx_load_guest_pcore 예제들

예제 #1

struct guest_pcore *load_guest_pcore(struct proc *p, int guest_pcoreid,
                                     bool *should_vmresume)
{
	struct guest_pcore *gpc;
	struct per_cpu_info *pcpui = &per_cpu_info[core_id()];

	gpc = lookup_guest_pcore(p, guest_pcoreid);
	if (!gpc)
		return 0;
	assert(pcpui->guest_pcoreid == -1);
	spin_lock(&p->vmm.lock);
	if (gpc->cpu != -1) {
		spin_unlock(&p->vmm.lock);
		return 0;
	}
	gpc->cpu = core_id();
	spin_unlock(&p->vmm.lock);
	/* We've got dibs on the gpc; we don't need to hold the lock any longer. */
	pcpui->guest_pcoreid = guest_pcoreid;
	vmx_load_guest_pcore(gpc, should_vmresume);
	/* Load guest's xcr0 */
	lxcr0(gpc->xcr0);

	/* Manual MSR save/restore */
	write_kern_gsbase(gpc->msr_kern_gs_base);
	if (gpc->msr_star != AKAROS_MSR_STAR)
		write_msr(MSR_STAR, gpc->msr_star);
	if (gpc->msr_lstar != AKAROS_MSR_LSTAR)
		write_msr(MSR_LSTAR, gpc->msr_lstar);
	if (gpc->msr_sfmask != AKAROS_MSR_SFMASK)
		write_msr(MSR_SFMASK, gpc->msr_sfmask);

	return gpc;
}

예제 #2

파일: vmm.c 프로젝트: anandab/akaros

struct guest_pcore *load_guest_pcore(struct proc *p, int guest_pcoreid)
{
	struct guest_pcore *gpc;
	struct per_cpu_info *pcpui = &per_cpu_info[core_id()];

	gpc = lookup_guest_pcore(p, guest_pcoreid);
	if (!gpc)
		return 0;
	assert(pcpui->guest_pcoreid == -1);
	spin_lock(&p->vmm.lock);
	if (gpc->cpu != -1) {
		spin_unlock(&p->vmm.lock);
		return 0;
	}
	gpc->cpu = core_id();
	spin_unlock(&p->vmm.lock);
	/* We've got dibs on the gpc; we don't need to hold the lock any longer. */
	pcpui->guest_pcoreid = guest_pcoreid;
	ept_sync_context(gpc_get_eptp(gpc));
	vmx_load_guest_pcore(gpc);
	/* Load guest's xcr0 */
	lxcr0(gpc->xcr0);
	return gpc;
}