From e1e0c43de352e62646975d9d18dfc8b2c0c8cf07 Mon Sep 17 00:00:00 2001 From: "adsharma@los-vmm.sc.intel.com" Date: Tue, 9 Aug 2005 11:06:44 -0800 Subject: [PATCH] Add a hook to support CPU migration for VMX domains Signed-off-by: Yunhong Jiang Signed-off-by: Arun Sharma --- xen/arch/x86/domain.c | 9 +++++++++ xen/common/dom0_ops.c | 4 +++- xen/include/xen/domain.h | 2 ++ 3 files changed, 14 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c index dedebbbd6c..12a0c0cb73 100644 --- a/xen/arch/x86/domain.c +++ b/xen/arch/x86/domain.c @@ -297,6 +297,15 @@ void arch_do_boot_vcpu(struct vcpu *v) l1e_from_page(virt_to_page(gdt_table), PAGE_HYPERVISOR); } +void +arch_migrate_cpu(struct vcpu *v, int newcpu) +{ + if ( VMX_DOMAIN(v) && (v->processor != newcpu) ){ + u64 vmcs_phys_ptr = (u64) virt_to_phys(v->arch.arch_vmx.vmcs); + __vmpclear(vmcs_phys_ptr); + } +} + #ifdef CONFIG_VMX static int vmx_switch_on; diff --git a/xen/common/dom0_ops.c b/xen/common/dom0_ops.c index d189528df2..7459676290 100644 --- a/xen/common/dom0_ops.c +++ b/xen/common/dom0_ops.c @@ -300,8 +300,10 @@ long do_dom0_op(dom0_op_t *u_dom0_op) int new_cpu = (int)find_first_set_bit(cpumap) % num_online_cpus(); vcpu_pause(v); - if ( v->processor != new_cpu ) + if ( v->processor != new_cpu ){ set_bit(_VCPUF_cpu_migrated, &v->vcpu_flags); + arch_migrate_cpu(v, new_cpu); + } set_bit(_VCPUF_cpu_pinned, &v->vcpu_flags); v->processor = new_cpu; vcpu_unpause(v); diff --git a/xen/include/xen/domain.h b/xen/include/xen/domain.h index 46c2e4bb5d..be7f2bbfba 100644 --- a/xen/include/xen/domain.h +++ b/xen/include/xen/domain.h @@ -14,6 +14,8 @@ extern void arch_do_createdomain(struct vcpu *v); extern void arch_do_boot_vcpu(struct vcpu *v); +void arch_migrate_cpu(struct vcpu *v, int newcpu); + extern int arch_set_info_guest( struct vcpu *d, struct vcpu_guest_context *c); -- 2.30.2