# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1284395142 -3600
# Node ID e129bd12274154e5646ae841db21decea8c58bd9
# Parent b40661482e0fc4028219b4bc5be19936db5a2639
vmx: Unifying the CPU_BASED_VM_EXEC_CONTROL VMCS field write into a
single place for additional control that is required in nested VMX.
Signed-off-by: Qing He <qing.he@xxxxxxxxx>
Signed-off-by: Eddie Dong <eddie.dong@xxxxxxxxx>
---
xen/arch/x86/hvm/vmx/intr.c | 9 ++++-----
xen/arch/x86/hvm/vmx/vmcs.c | 2 +-
xen/arch/x86/hvm/vmx/vmx.c | 21 ++++++++++++---------
xen/include/asm-x86/hvm/vmx/vmx.h | 1 +
4 files changed, 18 insertions(+), 15 deletions(-)
diff -r b40661482e0f -r e129bd122741 xen/arch/x86/hvm/vmx/intr.c
--- a/xen/arch/x86/hvm/vmx/intr.c Mon Sep 13 17:25:11 2010 +0100
+++ b/xen/arch/x86/hvm/vmx/intr.c Mon Sep 13 17:25:42 2010 +0100
@@ -69,7 +69,6 @@
static void enable_intr_window(struct vcpu *v, struct hvm_intack intack)
{
- u32 *cpu_exec_control = &v->arch.hvm_vmx.exec_control;
u32 ctl = CPU_BASED_VIRTUAL_INTR_PENDING;
ASSERT(intack.source != hvm_intsrc_none);
@@ -103,10 +102,10 @@ static void enable_intr_window(struct vc
ctl = CPU_BASED_VIRTUAL_NMI_PENDING;
}
- if ( !(*cpu_exec_control & ctl) )
+ if ( !(v->arch.hvm_vmx.exec_control & ctl) )
{
- *cpu_exec_control |= ctl;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL, *cpu_exec_control);
+ v->arch.hvm_vmx.exec_control |= ctl;
+ vmx_update_cpu_exec_control(v);
}
}
@@ -121,7 +120,7 @@ asmlinkage void vmx_intr_assist(void)
if ( unlikely(v->arch.hvm_vcpu.single_step) )
{
v->arch.hvm_vmx.exec_control |= CPU_BASED_MONITOR_TRAP_FLAG;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
return;
}
diff -r b40661482e0f -r e129bd122741 xen/arch/x86/hvm/vmx/vmcs.c
--- a/xen/arch/x86/hvm/vmx/vmcs.c Mon Sep 13 17:25:11 2010 +0100
+++ b/xen/arch/x86/hvm/vmx/vmcs.c Mon Sep 13 17:25:42 2010 +0100
@@ -709,7 +709,7 @@ static int construct_vmcs(struct vcpu *v
/* Do not enable Monitor Trap Flag unless start single step debug */
v->arch.hvm_vmx.exec_control &= ~CPU_BASED_MONITOR_TRAP_FLAG;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
__vmwrite(VM_EXIT_CONTROLS, vmexit_ctl);
__vmwrite(VM_ENTRY_CONTROLS, vmentry_ctl);
diff -r b40661482e0f -r e129bd122741 xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c Mon Sep 13 17:25:11 2010 +0100
+++ b/xen/arch/x86/hvm/vmx/vmx.c Mon Sep 13 17:25:42 2010 +0100
@@ -385,6 +385,11 @@ long_mode_do_msr_write(unsigned int msr,
#endif /* __i386__ */
+void vmx_update_cpu_exec_control(struct vcpu *v)
+{
+ __vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+}
+
static void vmx_update_secondary_exec_control(struct vcpu *v)
{
__vmwrite(SECONDARY_VM_EXEC_CONTROL,
@@ -419,7 +424,7 @@ static void vmx_save_dr(struct vcpu *v)
/* Clear the DR dirty flag and re-enable intercepts for DR accesses. */
v->arch.hvm_vcpu.flag_dr_dirty = 0;
v->arch.hvm_vmx.exec_control |= CPU_BASED_MOV_DR_EXITING;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
v->arch.guest_context.debugreg[0] = read_debugreg(0);
v->arch.guest_context.debugreg[1] = read_debugreg(1);
@@ -968,7 +973,7 @@ static void vmx_set_rdtsc_exiting(struct
v->arch.hvm_vmx.exec_control &= ~CPU_BASED_RDTSC_EXITING;
if ( enable )
v->arch.hvm_vmx.exec_control |= CPU_BASED_RDTSC_EXITING;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
vmx_vmcs_exit(v);
}
@@ -1101,7 +1106,7 @@ static void vmx_update_guest_cr(struct v
v->arch.hvm_vmx.exec_control &= ~cr3_ctls;
if ( !hvm_paging_enabled(v) )
v->arch.hvm_vmx.exec_control |= cr3_ctls;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
/* Changing CR0.PE can change some bits in real CR4. */
vmx_update_guest_cr(v, 4);
@@ -1559,7 +1564,7 @@ static void vmx_dr_access(unsigned long
/* Allow guest direct access to DR registers */
v->arch.hvm_vmx.exec_control &= ~CPU_BASED_MOV_DR_EXITING;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
}
static void vmx_invlpg_intercept(unsigned long vaddr)
@@ -2488,14 +2493,12 @@ asmlinkage void vmx_vmexit_handler(struc
case EXIT_REASON_PENDING_VIRT_INTR:
/* Disable the interrupt window. */
v->arch.hvm_vmx.exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL,
- v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
break;
case EXIT_REASON_PENDING_VIRT_NMI:
/* Disable the NMI window. */
v->arch.hvm_vmx.exec_control &= ~CPU_BASED_VIRTUAL_NMI_PENDING;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL,
- v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
break;
case EXIT_REASON_TASK_SWITCH: {
const enum hvm_task_switch_reason reasons[] = {
@@ -2655,7 +2658,7 @@ asmlinkage void vmx_vmexit_handler(struc
case EXIT_REASON_MONITOR_TRAP_FLAG:
v->arch.hvm_vmx.exec_control &= ~CPU_BASED_MONITOR_TRAP_FLAG;
- __vmwrite(CPU_BASED_VM_EXEC_CONTROL, v->arch.hvm_vmx.exec_control);
+ vmx_update_cpu_exec_control(v);
if ( v->domain->debugger_attached && v->arch.hvm_vcpu.single_step )
domain_pause_for_debugger();
break;
diff -r b40661482e0f -r e129bd122741 xen/include/asm-x86/hvm/vmx/vmx.h
--- a/xen/include/asm-x86/hvm/vmx/vmx.h Mon Sep 13 17:25:11 2010 +0100
+++ b/xen/include/asm-x86/hvm/vmx/vmx.h Mon Sep 13 17:25:42 2010 +0100
@@ -61,6 +61,7 @@ void vmx_realmode(struct cpu_user_regs *
void vmx_realmode(struct cpu_user_regs *regs);
void vmx_update_debug_state(struct vcpu *v);
void vmx_update_exception_bitmap(struct vcpu *v);
+void vmx_update_cpu_exec_control(struct vcpu *v);
/*
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