[Xen-devel] [PATCH v7 12/15] xen/arm: run the vtimer Xen timers on the pcpu the vcpu is running on

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

The Xen physical timer emulator and virtual timer driver use two
internal Xen timers: initialize them on the pcpu the vcpu is running on,
rather than the processor that it's creating the vcpu.

On vcpu restore migrate the phys_timer and the virt_timer to the
pcpu the vcpu is running on.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

Changes in v4:
- migrate Xen timers on virt_timer_restore.
---
 xen/arch/arm/vtimer.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/xen/arch/arm/vtimer.c b/xen/arch/arm/vtimer.c
index 1cb365e..393aac3 100644
--- a/xen/arch/arm/vtimer.c
+++ b/xen/arch/arm/vtimer.c
@@ -48,7 +48,7 @@ int vcpu_vtimer_init(struct vcpu *v)
 {
     struct vtimer *t = &v->arch.phys_timer;
 
-    init_timer(&t->timer, phys_timer_expired, t, smp_processor_id());
+    init_timer(&t->timer, phys_timer_expired, t, v->processor);
     t->ctl = 0;
     t->offset = NOW();
     t->cval = NOW();
@@ -56,7 +56,7 @@ int vcpu_vtimer_init(struct vcpu *v)
     t->v = v;
 
     t = &v->arch.virt_timer;
-    init_timer(&t->timer, virt_timer_expired, t, smp_processor_id());
+    init_timer(&t->timer, virt_timer_expired, t, v->processor);
     t->ctl = 0;
     t->offset = READ_SYSREG64(CNTVCT_EL0) + READ_SYSREG64(CNTVOFF_EL2);
     t->cval = 0;
@@ -95,6 +95,8 @@ int virt_timer_restore(struct vcpu *v)
         return 0;
 
     stop_timer(&v->arch.virt_timer.timer);
+    migrate_timer(&v->arch.virt_timer.timer, v->processor);
+    migrate_timer(&v->arch.phys_timer.timer, v->processor);
 
     WRITE_SYSREG64(v->arch.virt_timer.offset, CNTVOFF_EL2);
     WRITE_SYSREG64(v->arch.virt_timer.cval, CNTV_CVAL_EL0);
-- 
1.7.2.5


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