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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Bring up AP of VMX domain.
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID cf1c1bb9f6d200ffa0bc0e7d7310feb03dd34481
# Parent 71f2d19cd3a5142c9e060913ad95cdd7e03ecbb4
Bring up AP of VMX domain.
1) add INIT-SIPI-SIPI IPI sequence handling code to HVM virtual lapic
code.
2) add an new interface init_ap_context to hvm_funcs, and implement the
VMX side.
3) add a hvm generic function hvm_bringup_ap, which in turn calls
init_ap_context.
Signed-off-by: Xin Li <xin.b.li@xxxxxxxxx>
Signed-off-by: Yunhong Jiang <yunhong.jiang@xxxxxxxxx>
diff -r 71f2d19cd3a5 -r cf1c1bb9f6d2 xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c Fri Feb 24 16:32:19 2006
+++ b/xen/arch/x86/hvm/hvm.c Fri Feb 24 16:32:58 2006
@@ -25,6 +25,7 @@
#include <xen/sched.h>
#include <xen/irq.h>
#include <xen/softirq.h>
+#include <xen/domain.h>
#include <xen/domain_page.h>
#include <asm/current.h>
#include <asm/io.h>
@@ -59,9 +60,9 @@
for ( i = 0; i < nr_pfn; i++ )
{
- if ( pfn + i >= 0xfffff )
+ if ( pfn + i >= 0xfffff )
break;
-
+
__copy_to_user(&phys_to_machine_mapping[pfn + i], &val, sizeof (val));
}
}
@@ -217,7 +218,7 @@
global_iodata_t *spg;
u16 *virq_line, irqs;
struct hvm_virpic *pic = &v->domain->arch.hvm_domain.vpic;
-
+
spg = &get_sp(v->domain)->sp_global;
virq_line = &spg->pic_clear_irr;
if ( *virq_line ) {
@@ -312,6 +313,52 @@
}
/*
+ * only called in HVM domain BSP context
+ * when booting, vcpuid is always equal to apic_id
+ */
+int hvm_bringup_ap(int vcpuid, int trampoline_vector)
+{
+ struct vcpu *bsp = current, *v;
+ struct domain *d = bsp->domain;
+ struct vcpu_guest_context *ctxt;
+ int rc = 0;
+
+ /* current must be HVM domain BSP */
+ if ( !(HVM_DOMAIN(bsp) && bsp->vcpu_id == 0) ) {
+ printk("Not calling hvm_bringup_ap from BSP context.\n");
+ domain_crash_synchronous();
+ }
+
+ if ( (v = d->vcpu[vcpuid]) == NULL )
+ return -ENOENT;
+
+ if ( (ctxt = xmalloc(struct vcpu_guest_context)) == NULL ) {
+ printk("Failed to allocate memory in hvm_bringup_ap.\n");
+ return -ENOMEM;
+ }
+
+ hvm_init_ap_context(ctxt, vcpuid, trampoline_vector);
+
+ LOCK_BIGLOCK(d);
+ rc = -EEXIST;
+ if ( !test_bit(_VCPUF_initialised, &v->vcpu_flags) )
+ rc = boot_vcpu(d, vcpuid, ctxt);
+ UNLOCK_BIGLOCK(d);
+
+ if ( rc != 0 )
+ printk("AP %d bringup failed in boot_vcpu %x.\n", vcpuid, rc);
+ else {
+ if ( test_and_clear_bit(_VCPUF_down, &d->vcpu[vcpuid]->vcpu_flags) )
+ vcpu_wake(d->vcpu[vcpuid]);
+ printk("AP %d bringup suceeded.\n", vcpuid);
+ }
+
+ xfree(ctxt);
+
+ return rc;
+}
+
+/*
* Local variables:
* mode: C
* c-set-style: "BSD"
diff -r 71f2d19cd3a5 -r cf1c1bb9f6d2 xen/arch/x86/hvm/vlapic.c
--- a/xen/arch/x86/hvm/vlapic.c Fri Feb 24 16:32:19 2006
+++ b/xen/arch/x86/hvm/vlapic.c Fri Feb 24 16:32:58 2006
@@ -225,27 +225,35 @@
break;
case VLAPIC_DELIV_MODE_INIT:
- if (!level && trig_mode == 1) { //Deassert
+ if ( !level && trig_mode == 1 ) { //Deassert
printk("This hvm_vlapic is for P4, no work for De-assert init\n");
} else {
/* FIXME How to check the situation after vcpu reset? */
- vlapic->init_sipi_sipi_state =
VLAPIC_INIT_SIPI_SIPI_STATE_WAIT_SIPI;
- if (vlapic->vcpu) {
- vcpu_pause(vlapic->vcpu);
+ if ( test_and_clear_bit(_VCPUF_initialised, &v->vcpu_flags) ) {
+ printk("Reset hvm vcpu not supported yet\n");
+ domain_crash_synchronous();
}
+ v->arch.hvm_vcpu.init_sipi_sipi_state =
+ HVM_VCPU_INIT_SIPI_SIPI_STATE_WAIT_SIPI;
+ result = 1;
}
break;
case VLAPIC_DELIV_MODE_STARTUP:
- if (vlapic->init_sipi_sipi_state !=
VLAPIC_INIT_SIPI_SIPI_STATE_WAIT_SIPI)
+ if ( v->arch.hvm_vcpu.init_sipi_sipi_state ==
+ HVM_VCPU_INIT_SIPI_SIPI_STATE_NORM )
break;
- vlapic->init_sipi_sipi_state = VLAPIC_INIT_SIPI_SIPI_STATE_NORM;
- if (!vlapic->vcpu) {
- /* XXX Call hvm_bringup_ap here */
- result = 0;
- }else{
- //hvm_vcpu_reset(vlapic->vcpu);
- }
+
+ v->arch.hvm_vcpu.init_sipi_sipi_state =
+ HVM_VCPU_INIT_SIPI_SIPI_STATE_NORM;
+
+ if ( test_bit(_VCPUF_initialised, &v->vcpu_flags) ) {
+ printk("SIPI for initialized vcpu vcpuid %x\n", v->vcpu_id);
+ domain_crash_synchronous();
+ }
+
+ if ( hvm_bringup_ap(v->vcpu_id, vector) != 0 )
+ result = 0;
break;
default:
diff -r 71f2d19cd3a5 -r cf1c1bb9f6d2 xen/arch/x86/hvm/vmx/io.c
--- a/xen/arch/x86/hvm/vmx/io.c Fri Feb 24 16:32:19 2006
+++ b/xen/arch/x86/hvm/vmx/io.c Fri Feb 24 16:32:58 2006
@@ -113,13 +113,15 @@
struct hvm_virpit *vpit = &plat->vpit;
struct hvm_virpic *pic= &plat->vpic;
- hvm_pic_assist(v);
- __vmread_vcpu(v, CPU_BASED_VM_EXEC_CONTROL, &cpu_exec_control);
- if ( vpit->pending_intr_nr ) {
+ if ( v->vcpu_id == 0 )
+ hvm_pic_assist(v);
+
+ if ( (v->vcpu_id == 0) && vpit->pending_intr_nr ) {
pic_set_irq(pic, 0, 0);
pic_set_irq(pic, 0, 1);
}
+ __vmread_vcpu(v, CPU_BASED_VM_EXEC_CONTROL, &cpu_exec_control);
__vmread(VM_ENTRY_INTR_INFO_FIELD, &intr_fields);
if (intr_fields & INTR_INFO_VALID_MASK) {
diff -r 71f2d19cd3a5 -r cf1c1bb9f6d2 xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c Fri Feb 24 16:32:19 2006
+++ b/xen/arch/x86/hvm/vmx/vmx.c Fri Feb 24 16:32:58 2006
@@ -448,6 +448,37 @@
return 0; /* dummy */
}
+/* SMP VMX guest support */
+void vmx_init_ap_context(struct vcpu_guest_context *ctxt,
+ int vcpuid, int trampoline_vector)
+{
+ int i;
+
+ memset(ctxt, 0, sizeof(*ctxt));
+
+ /*
+ * Initial register values:
+ */
+ ctxt->user_regs.eip = VMXASSIST_BASE;
+ ctxt->user_regs.edx = vcpuid;
+ ctxt->user_regs.ebx = trampoline_vector;
+
+ ctxt->flags = VGCF_HVM_GUEST;
+
+ /* Virtual IDT is empty at start-of-day. */
+ for ( i = 0; i < 256; i++ )
+ {
+ ctxt->trap_ctxt[i].vector = i;
+ ctxt->trap_ctxt[i].cs = FLAT_KERNEL_CS;
+ }
+
+ /* No callback handlers. */
+#if defined(__i386__)
+ ctxt->event_callback_cs = FLAT_KERNEL_CS;
+ ctxt->failsafe_callback_cs = FLAT_KERNEL_CS;
+#endif
+}
+
void do_nmi(struct cpu_user_regs *);
static int check_vmx_controls(ctrls, msr)
@@ -544,6 +575,8 @@
hvm_funcs.paging_enabled = vmx_paging_enabled;
hvm_funcs.instruction_length = vmx_instruction_length;
hvm_funcs.get_guest_ctrl_reg = vmx_get_ctrl_reg;
+
+ hvm_funcs.init_ap_context = vmx_init_ap_context;
hvm_enabled = 1;
diff -r 71f2d19cd3a5 -r cf1c1bb9f6d2 xen/include/asm-x86/hvm/hvm.h
--- a/xen/include/asm-x86/hvm/hvm.h Fri Feb 24 16:32:19 2006
+++ b/xen/include/asm-x86/hvm/hvm.h Fri Feb 24 16:32:58 2006
@@ -67,6 +67,9 @@
int (*paging_enabled)(struct vcpu *v);
int (*instruction_length)(struct vcpu *v);
unsigned long (*get_guest_ctrl_reg)(struct vcpu *v, unsigned int num);
+
+ void (*init_ap_context)(struct vcpu_guest_context *ctxt,
+ int vcpuid, int trampoline_vector);
};
extern struct hvm_function_table hvm_funcs;
@@ -173,4 +176,14 @@
return hvm_funcs.get_guest_ctrl_reg(v, num);
return 0; /* force to fail */
}
+
+static inline void
+hvm_init_ap_context(struct vcpu_guest_context *ctxt,
+ int vcpuid, int trampoline_vector)
+{
+ return hvm_funcs.init_ap_context(ctxt, vcpuid, trampoline_vector);
+}
+
+extern int hvm_bringup_ap(int vcpuid, int trampoline_vector);
+
#endif /* __ASM_X86_HVM_HVM_H__ */
diff -r 71f2d19cd3a5 -r cf1c1bb9f6d2 xen/include/asm-x86/hvm/vcpu.h
--- a/xen/include/asm-x86/hvm/vcpu.h Fri Feb 24 16:32:19 2006
+++ b/xen/include/asm-x86/hvm/vcpu.h Fri Feb 24 16:32:58 2006
@@ -25,10 +25,15 @@
#include <asm/hvm/vmx/vmcs.h>
#include <asm/hvm/svm/vmcb.h>
+#define HVM_VCPU_INIT_SIPI_SIPI_STATE_NORM 0
+#define HVM_VCPU_INIT_SIPI_SIPI_STATE_WAIT_SIPI 1
+
struct hvm_vcpu {
- unsigned long ioflags;
- struct mmio_op mmio_op;
- struct vlapic *vlapic;
+ unsigned long ioflags;
+ struct mmio_op mmio_op;
+ struct vlapic *vlapic;
+ /* For AP startup */
+ unsigned long init_sipi_sipi_state;
union {
struct arch_vmx_struct vmx;
diff -r 71f2d19cd3a5 -r cf1c1bb9f6d2 xen/include/asm-x86/hvm/vlapic.h
--- a/xen/include/asm-x86/hvm/vlapic.h Fri Feb 24 16:32:19 2006
+++ b/xen/include/asm-x86/hvm/vlapic.h Fri Feb 24 16:32:58 2006
@@ -158,9 +158,6 @@
int deliver_mode;
int source[6];
} direct_intr_info_t;
-
-#define VLAPIC_INIT_SIPI_SIPI_STATE_NORM 0
-#define VLAPIC_INIT_SIPI_SIPI_STATE_WAIT_SIPI 1
struct vlapic
{
@@ -197,7 +194,6 @@
unsigned long init_ticks;
uint32_t err_write_count;
uint64_t apic_base_msr;
- uint32_t init_sipi_sipi_state;
struct vcpu *vcpu;
struct domain *domain;
};
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