From: Qing He <qing.he@intel.com>
To: xen-devel@lists.xensource.com
Cc: Qing He <qing.he@intel.com>
Subject: [PATCH 07/16] vmx: nest: switch current vmcs
Date: Wed, 8 Sep 2010 23:22:15 +0800 [thread overview]
Message-ID: <1283959344-3837-8-git-send-email-qing.he@intel.com> (raw)
In-Reply-To: <1283959344-3837-1-git-send-email-qing.he@intel.com>
facility to switch between host vmcs and shadow vmcs
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Eddie Dong <eddie.dong@intel.com>
---
diff -r e638812d8f46 xen/arch/x86/hvm/vmx/vmcs.c
--- a/xen/arch/x86/hvm/vmx/vmcs.c Wed Sep 08 21:30:02 2010 +0800
+++ b/xen/arch/x86/hvm/vmx/vmcs.c Wed Sep 08 21:42:10 2010 +0800
@@ -642,6 +642,35 @@
(unsigned long)&get_cpu_info()->guest_cpu_user_regs.error_code);
}
+void vmx_vmcs_switch_current(struct vcpu *v,
+ struct vmcs_struct *from,
+ struct vmcs_struct *to)
+{
+ /* no foreign access */
+ if ( unlikely(v != current) )
+ return;
+
+ if ( unlikely(current->arch.hvm_vmx.vmcs != from) )
+ return;
+
+ spin_lock(&v->arch.hvm_vmx.vmcs_lock);
+
+ __vmpclear(virt_to_maddr(from));
+ __vmptrld(virt_to_maddr(to));
+
+ v->arch.hvm_vmx.vmcs = to;
+ v->arch.hvm_vmx.launched = 0;
+ this_cpu(current_vmcs) = to;
+
+ if ( v->arch.hvm_vmx.vmcs_host_updated )
+ {
+ v->arch.hvm_vmx.vmcs_host_updated = 0;
+ vmx_set_host_env(v);
+ }
+
+ spin_unlock(&v->arch.hvm_vmx.vmcs_lock);
+}
+
void vmx_disable_intercept_for_msr(struct vcpu *v, u32 msr)
{
unsigned long *msr_bitmap = v->arch.hvm_vmx.msr_bitmap;
@@ -1080,6 +1109,12 @@
hvm_migrate_pirqs(v);
vmx_set_host_env(v);
hvm_asid_flush_vcpu(v);
+
+ /*
+ * nesting: we need to do additional host env sync if we have other
+ * VMCS's. Currently this only works with only one active sVMCS.
+ */
+ v->arch.hvm_vmx.vmcs_host_updated = 1;
}
debug_state = v->domain->debugger_attached;
diff -r e638812d8f46 xen/include/asm-x86/hvm/vmx/vmcs.h
--- a/xen/include/asm-x86/hvm/vmx/vmcs.h Wed Sep 08 21:30:02 2010 +0800
+++ b/xen/include/asm-x86/hvm/vmx/vmcs.h Wed Sep 08 21:42:10 2010 +0800
@@ -102,6 +102,7 @@
/* nested virtualization */
struct vmx_nest_struct nest;
+ int vmcs_host_updated;
#ifdef __x86_64__
struct vmx_msr_state msr_state;
@@ -389,6 +390,9 @@
int vmx_write_guest_msr(u32 msr, u64 val);
int vmx_add_guest_msr(u32 msr);
int vmx_add_host_load_msr(u32 msr);
+void vmx_vmcs_switch_current(struct vcpu *v,
+ struct vmcs_struct *from,
+ struct vmcs_struct *to);
#endif /* ASM_X86_HVM_VMX_VMCS_H__ */
next prev parent reply other threads:[~2010-09-08 15:22 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-08 15:22 [PATCH 00/16] Nested virtualization for VMX Qing He
2010-09-08 15:22 ` [PATCH 01/16] vmx: nest: rename host_vmcs Qing He
2010-09-10 13:27 ` Christoph Egger
2010-09-08 15:22 ` [PATCH 02/16] vmx: nest: wrapper for control update Qing He
2010-09-10 13:29 ` Christoph Egger
2010-09-08 15:22 ` [PATCH 03/16] vmx: nest: nested availability and status flags Qing He
2010-09-15 11:43 ` Christoph Egger
2010-09-15 14:18 ` Dong, Eddie
2010-09-08 15:22 ` [PATCH 04/16] vmx: nest: nested control structure Qing He
2010-09-09 6:13 ` Dong, Eddie
2010-09-15 11:27 ` Christoph Egger
2010-09-15 13:06 ` Dong, Eddie
2010-09-15 13:17 ` Christoph Egger
2010-09-15 13:31 ` Christoph Egger
2010-09-15 13:46 ` Dong, Eddie
2010-09-15 14:02 ` Christoph Egger
2010-09-08 15:22 ` [PATCH 05/16] vmx: nest: virtual vmcs layout Qing He
2010-09-13 10:29 ` Tim Deegan
2010-09-08 15:22 ` [PATCH 06/16] vmx: nest: handling VMX instruction exits Qing He
2010-09-10 7:05 ` Dong, Eddie
2010-09-13 11:11 ` Tim Deegan
2010-09-13 14:29 ` Dong, Eddie
2010-09-13 14:46 ` Tim Deegan
2010-09-13 11:10 ` Tim Deegan
2010-09-15 4:55 ` Dong, Eddie
2010-09-15 6:40 ` Keir Fraser
2010-09-15 6:49 ` Dong, Eddie
2010-09-15 7:31 ` Keir Fraser
2010-09-15 8:15 ` Christoph Egger
2010-09-15 8:23 ` Keir Fraser
2010-09-15 9:08 ` Dong, Eddie
2010-09-15 11:39 ` Keir Fraser
2010-09-15 12:36 ` Dong, Eddie
2010-09-15 13:12 ` Keir Fraser
2010-09-20 3:13 ` Dong, Eddie
2010-09-20 8:08 ` Keir Fraser
2010-09-20 9:33 ` Dong, Eddie
2010-09-20 9:41 ` Keir Fraser
2010-09-20 13:10 ` Dong, Eddie
2010-09-20 9:41 ` Christoph Egger
2010-09-20 13:14 ` Dong, Eddie
2010-09-15 7:17 ` Qing He
2010-09-15 7:38 ` Keir Fraser
2010-09-15 7:56 ` Dong, Eddie
2010-09-15 8:15 ` Keir Fraser
2010-09-15 9:26 ` Tim Deegan
2010-09-15 9:56 ` Dong, Eddie
2010-09-15 11:46 ` Keir Fraser
2010-09-08 15:22 ` Qing He [this message]
2010-09-08 15:22 ` [PATCH 08/16] vmx: nest: vmresume/vmlaunch Qing He
2010-09-15 9:52 ` Christoph Egger
2010-09-15 11:30 ` Christoph Egger
2010-09-20 5:19 ` Dong, Eddie
2010-09-08 15:22 ` [PATCH 09/16] vmx: nest: shadow controls Qing He
2010-09-08 15:22 ` [PATCH 10/16] vmx: nest: L1 <-> L2 context switch Qing He
2010-09-08 15:22 ` [PATCH 11/16] vmx: nest: interrupt handling Qing He
2010-09-08 15:22 ` [PATCH 12/16] vmx: nest: VMExit handler in L2 Qing He
2010-09-08 15:22 ` [PATCH 13/16] vmx: nest: L2 tsc Qing He
2010-09-08 15:22 ` [PATCH 14/16] vmx: nest: CR0.TS and #NM Qing He
2010-09-08 15:22 ` [PATCH 15/16] vmx: nest: capability reporting MSRs Qing He
2010-09-13 12:45 ` Tim Deegan
2010-09-15 10:05 ` Christoph Egger
2010-09-15 14:28 ` Dong, Eddie
2010-09-15 14:45 ` Christoph Egger
2010-09-16 14:10 ` Dong, Eddie
2010-09-08 15:22 ` [PATCH 16/16] vmx: nest: expose cpuid and CR4.VMXE Qing He
2010-09-15 9:43 ` Christoph Egger
2010-09-13 13:10 ` [PATCH 00/16] Nested virtualization for VMX Tim Deegan
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