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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [HVM] Simplify relationship between VIOAPIC and VLAPICs.
# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Node ID 6555ca56d844c149fd457aa4f38a340c321b8ec3
# Parent 1d4fc7396c41658e8fb85267b7f4d9748dc99298
[HVM] Simplify relationship between VIOAPIC and VLAPICs.
It's not really dynamic since there is always exactly
one VLAPIC per VCPU.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
xen/arch/ia64/vmx/vlsapic.c | 21 ++----
xen/arch/x86/hvm/vioapic.c | 133 +++++++++++++-------------------------
xen/arch/x86/hvm/vlapic.c | 2
xen/include/asm-x86/hvm/vioapic.h | 8 --
4 files changed, 56 insertions(+), 108 deletions(-)
diff -r 1d4fc7396c41 -r 6555ca56d844 xen/arch/ia64/vmx/vlsapic.c
--- a/xen/arch/ia64/vmx/vlsapic.c Wed Nov 08 15:10:21 2006 +0000
+++ b/xen/arch/ia64/vmx/vlsapic.c Wed Nov 08 15:11:18 2006 +0000
@@ -324,9 +324,9 @@ void vtm_domain_in(VCPU *vcpu)
*/
#ifdef V_IOSAPIC_READY
-int ioapic_match_logical_addr(struct vioapic *s, int number, uint16_t dest)
-{
- return (VLAPIC_ID(s->lapic_info[number]) == dest);
+int vlapic_match_logical_addr(struct vlapic *vlapic, uint16_t dest)
+{
+ return (VLAPIC_ID(vlapic) == dest);
}
struct vlapic* apic_round_robin(struct domain *d,
@@ -334,21 +334,17 @@ struct vlapic* apic_round_robin(struct d
uint8_t vector,
uint32_t bitmap)
{
- uint8_t bit;
- struct vioapic *s;
+ uint8_t bit = 0;
if (!bitmap) {
printk("<apic_round_robin> no bit on bitmap\n");
return NULL;
}
- s = domain_vioapic(d);
- for (bit = 0; bit < s->lapic_count; bit++) {
- if (bitmap & (1 << bit))
- return s->lapic_info[bit];
- }
-
- return NULL;
+ while (!(bitmap & (1 << bit)))
+ bit++;
+
+ return vcpu_vlapic(d->vcpu[bit]);
}
#endif
@@ -375,7 +371,6 @@ void vlsapic_reset(VCPU *vcpu)
#ifdef V_IOSAPIC_READY
vcpu->arch.arch_vmx.vlapic.vcpu = vcpu;
- vioapic_add_lapic(&vcpu->arch.arch_vmx.vlapic, vcpu);
#endif
dprintk(XENLOG_INFO, "VLSAPIC inservice base=%p\n", &VLSAPIC_INSVC(vcpu,0)
);
}
diff -r 1d4fc7396c41 -r 6555ca56d844 xen/arch/x86/hvm/vioapic.c
--- a/xen/arch/x86/hvm/vioapic.c Wed Nov 08 15:10:21 2006 +0000
+++ b/xen/arch/x86/hvm/vioapic.c Wed Nov 08 15:11:18 2006 +0000
@@ -49,19 +49,6 @@ static int redir_warning_done = 0;
#define opt_hvm_debug_level opt_vmx_debug_level
#endif
-#ifdef HVM_DOMAIN_SAVE_RESTORE
-void ioapic_save(QEMUFile* f, void* opaque)
-{
- printk("no implementation for ioapic_save\n");
-}
-
-int ioapic_load(QEMUFile* f, void* opaque, int version_id)
-{
- printk("no implementation for ioapic_load\n");
- return 0;
-}
-#endif
-
static unsigned long vioapic_read_indirect(struct vioapic *vioapic,
unsigned long addr,
unsigned long length)
@@ -299,19 +286,18 @@ static int ioapic_inj_irq(struct vioapic
}
#ifndef __ia64__
-static int ioapic_match_logical_addr(
- struct vioapic *vioapic, int number, uint8_t dest)
+static int vlapic_match_logical_addr(struct vlapic *vlapic, uint8_t dest)
{
int result = 0;
uint32_t logical_dest;
- HVM_DBG_LOG(DBG_LEVEL_IOAPIC, "ioapic_match_logical_addr "
- "number %i dest %x\n",
- number, dest);
-
- logical_dest = vlapic_get_reg(vioapic->lapic_info[number], APIC_LDR);
-
- switch ( vlapic_get_reg(vioapic->lapic_info[number], APIC_DFR) )
+ HVM_DBG_LOG(DBG_LEVEL_IOAPIC, "vlapic_match_logical_addr "
+ "vcpu=%d vlapic_id=%x dest=%x\n",
+ vlapic_vcpu(vlapic)->vcpu_id, VLAPIC_ID(vlapic), dest);
+
+ logical_dest = vlapic_get_reg(vlapic, APIC_LDR);
+
+ switch ( vlapic_get_reg(vlapic, APIC_DFR) )
{
case APIC_DFR_FLAT:
result = ((dest & GET_APIC_LOGICAL_ID(logical_dest)) != 0);
@@ -324,15 +310,15 @@ static int ioapic_match_logical_addr(
result = 1;
break;
default:
- gdprintk(XENLOG_WARNING, "error DFR value for %x lapic\n", number);
+ gdprintk(XENLOG_WARNING, "error DFR value for lapic of vcpu %d\n",
+ vlapic_vcpu(vlapic)->vcpu_id);
break;
}
return result;
}
#else
-extern int ioapic_match_logical_addr(
- struct vioapic *vioapic, int number, uint8_t dest);
+extern int vlapic_match_logical_addr(struct vlapic *vlapic, uint16_t dest);
#endif
static uint32_t ioapic_get_delivery_bitmask(struct vioapic *vioapic,
@@ -342,49 +328,40 @@ static uint32_t ioapic_get_delivery_bitm
uint8_t delivery_mode)
{
uint32_t mask = 0;
- int i;
+ struct vcpu *v;
HVM_DBG_LOG(DBG_LEVEL_IOAPIC, "ioapic_get_delivery_bitmask "
- "dest %d dest_mode %d "
- "vector %d del_mode %d, lapic_count %d\n",
- dest, dest_mode, vector, delivery_mode, vioapic->lapic_count);
-
- if ( dest_mode == 0 )
- {
- /* Physical mode. */
- for ( i = 0; i < vioapic->lapic_count; i++ )
- {
- if ( VLAPIC_ID(vioapic->lapic_info[i]) == dest )
+ "dest %d dest_mode %d vector %d del_mode %d\n",
+ dest, dest_mode, vector, delivery_mode);
+
+ if ( dest_mode == 0 ) /* Physical mode. */
+ {
+ if ( dest == 0xFF ) /* Broadcast. */
+ {
+ for_each_vcpu ( vioapic_domain(vioapic), v )
+ mask |= 1 << v->vcpu_id;
+ goto out;
+ }
+
+ for_each_vcpu ( vioapic_domain(vioapic), v )
+ {
+ if ( VLAPIC_ID(vcpu_vlapic(v)) == dest )
{
- mask = 1 << i;
+ mask = 1 << v->vcpu_id;
break;
}
}
-
- /* Broadcast. */
- if ( dest == 0xFF )
- {
- for ( i = 0; i < vioapic->lapic_count; i++ )
- mask |= ( 1 << i );
- }
- }
- else
- {
- /* Logical destination. Call match_logical_addr for each APIC. */
- if ( dest != 0 )
- {
- for ( i = 0; i < vioapic->lapic_count; i++ )
- {
- if ( vioapic->lapic_info[i] &&
- ioapic_match_logical_addr(vioapic, i, dest) )
- mask |= (1<<i);
- }
- }
- }
-
+ }
+ else if ( dest != 0 ) /* Logical mode, MDA non-zero. */
+ {
+ for_each_vcpu ( vioapic_domain(vioapic), v )
+ if ( vlapic_match_logical_addr(vcpu_vlapic(v), dest) )
+ mask |= 1 << v->vcpu_id;
+ }
+
+ out:
HVM_DBG_LOG(DBG_LEVEL_IOAPIC, "ioapic_get_delivery_bitmask "
"mask %x\n", mask);
-
return mask;
}
@@ -397,6 +374,7 @@ static void ioapic_deliver(struct vioapi
uint8_t trig_mode = vioapic->redirtbl[irq].fields.trig_mode;
uint32_t deliver_bitmask;
struct vlapic *target;
+ struct vcpu *v;
HVM_DBG_LOG(DBG_LEVEL_IOAPIC,
"dest=%x dest_mode=%x delivery_mode=%x "
@@ -419,7 +397,10 @@ static void ioapic_deliver(struct vioapi
#ifdef IRQ0_SPECIAL_ROUTING
/* Force round-robin to pick VCPU 0 */
if ( irq == 0 )
- target = vioapic->lapic_info[0];
+ {
+ v = vioapic_domain(vioapic)->vcpu[0];
+ target = v ? vcpu_vlapic(v) : NULL;
+ }
else
#endif
target = apic_round_robin(vioapic_domain(vioapic), dest_mode,
@@ -442,19 +423,21 @@ static void ioapic_deliver(struct vioapi
case dest_ExtINT:
{
uint8_t bit;
- for ( bit = 0; bit < vioapic->lapic_count; bit++ )
+ for ( bit = 0; deliver_bitmask != 0; bit++ )
{
if ( !(deliver_bitmask & (1 << bit)) )
continue;
+ deliver_bitmask &= ~(1 << bit);
#ifdef IRQ0_SPECIAL_ROUTING
/* Do not deliver timer interrupts to VCPU != 0 */
if ( (irq == 0) && (bit != 0) )
- target = vioapic->lapic_info[0];
+ v = vioapic_domain(vioapic)->vcpu[0];
else
#endif
- target = vioapic->lapic_info[bit];
- if ( target != NULL )
+ v = vioapic_domain(vioapic)->vcpu[bit];
+ if ( v != NULL )
{
+ target = vcpu_vlapic(v);
ioapic_inj_irq(vioapic, target, vector,
trig_mode, delivery_mode);
vcpu_kick(vlapic_vcpu(target));
@@ -595,26 +578,6 @@ void vioapic_update_EOI(struct domain *d
}
}
-int vioapic_add_lapic(struct vlapic *vlapic, struct vcpu *v)
-{
- struct vioapic *vioapic = domain_vioapic(v->domain);
-
- if ( v->vcpu_id != vioapic->lapic_count )
- {
- gdprintk(XENLOG_ERR, "vioapic_add_lapic "
- "cpu_id not match vcpu_id %x lapic_count %x\n",
- v->vcpu_id, vioapic->lapic_count);
- domain_crash_synchronous();
- }
-
- /* Update count later for race condition on interrupt. */
- vioapic->lapic_info[vioapic->lapic_count] = vlapic;
- wmb();
- vioapic->lapic_count++;
-
- return vioapic->lapic_count;
-}
-
void vioapic_init(struct domain *d)
{
struct vioapic *vioapic = domain_vioapic(d);
diff -r 1d4fc7396c41 -r 6555ca56d844 xen/arch/x86/hvm/vlapic.c
--- a/xen/arch/x86/hvm/vlapic.c Wed Nov 08 15:10:21 2006 +0000
+++ b/xen/arch/x86/hvm/vlapic.c Wed Nov 08 15:11:18 2006 +0000
@@ -1001,8 +1001,6 @@ int vlapic_init(struct vcpu *v)
if ( v->vcpu_id == 0 )
vlapic->apic_base_msr |= MSR_IA32_APICBASE_BSP;
- vioapic_add_lapic(vlapic, v);
-
init_timer(&vlapic->vlapic_timer,
vlapic_timer_fn, vlapic, v->processor);
diff -r 1d4fc7396c41 -r 6555ca56d844 xen/include/asm-x86/hvm/vioapic.h
--- a/xen/include/asm-x86/hvm/vioapic.h Wed Nov 08 15:10:21 2006 +0000
+++ b/xen/include/asm-x86/hvm/vioapic.h Wed Nov 08 15:11:18 2006 +0000
@@ -94,19 +94,11 @@ struct vioapic {
uint32_t id;
unsigned long base_address;
union vioapic_redir_entry redirtbl[VIOAPIC_NUM_PINS];
- struct vlapic *lapic_info[32];
- uint32_t lapic_count;
};
void vioapic_init(struct domain *d);
void vioapic_set_xen_irq(struct domain *d, int irq, int level);
void vioapic_set_irq(struct domain *d, int irq, int level);
-int vioapic_add_lapic(struct vlapic *vlapic, struct vcpu *v);
void vioapic_update_EOI(struct domain *d, int vector);
-#ifdef HVM_DOMAIN_SAVE_RESTORE
-void ioapic_save(QEMUFile* f, void* opaque);
-int ioapic_load(QEMUFile* f, void* opaque, int version_id);
-#endif
-
#endif /* __ASM_X86_HVM_VIOAPIC_H__ */
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