[Xen-changelog] [xen-unstable] [IA64] Fix HVM interrupts on IPF

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID 169687dab774a442b51a2175cbbdbe2a13b433d4
# Parent  2b0596c8a031fb61cd79809fab5d5420df6d610a
[IA64] Fix HVM interrupts on IPF

Xen has changed to set-irq-level hypercall from shared-memory PIC stat.
This patch makes IPF accomodate this change

Signed-off-by: Anthony Xu <anthony.xu@xxxxxxxxx>
---
 linux-2.6-xen-sparse/arch/ia64/xen/xcom_privcmd.c |    3 ++
 xen/arch/ia64/vmx/vlsapic.c                       |   22 ++++++++++++++++++
 xen/arch/ia64/vmx/vmx_hypercall.c                 |   26 ++++++++++++++++++++++
 xen/include/asm-ia64/vmx.h                        |    1 
 xen/include/asm-ia64/vmx_platform.h               |    4 +--
 5 files changed, 54 insertions(+), 2 deletions(-)

diff -r 2b0596c8a031 -r 169687dab774 
linux-2.6-xen-sparse/arch/ia64/xen/xcom_privcmd.c
--- a/linux-2.6-xen-sparse/arch/ia64/xen/xcom_privcmd.c Mon Nov 13 10:56:08 
2006 -0700
+++ b/linux-2.6-xen-sparse/arch/ia64/xen/xcom_privcmd.c Mon Nov 13 11:02:37 
2006 -0700
@@ -579,6 +579,9 @@ xencomm_privcmd_hvm_op(privcmd_hypercall
        case HVMOP_set_param:
                argsize = sizeof(xen_hvm_param_t);
                break;
+       case HVMOP_set_irq_level:
+               argsize = sizeof(xen_hvm_set_irq_level_t);
+               break;
        default:
                printk("%s: unknown HVMOP %d\n", __func__, cmd);
                return -EINVAL;
diff -r 2b0596c8a031 -r 169687dab774 xen/arch/ia64/vmx/vlsapic.c
--- a/xen/arch/ia64/vmx/vlsapic.c       Mon Nov 13 10:56:08 2006 -0700
+++ b/xen/arch/ia64/vmx/vlsapic.c       Mon Nov 13 11:02:37 2006 -0700
@@ -666,3 +666,25 @@ void vmx_vexirq(VCPU *vcpu)
 {
     generate_exirq (vcpu);
 }
+
+
+void vmx_vioapic_set_irq(struct domain *d, int irq, int level)
+{
+    unsigned long flags;
+
+    spin_lock_irqsave(&d->arch.arch_vmx.virq_assist_lock, flags);
+    vioapic_set_irq(d, irq, level);
+    spin_unlock_irqrestore(&d->arch.arch_vmx.virq_assist_lock, flags);
+}
+
+int vmx_vlapic_set_irq(VCPU *v, uint8_t vec, uint8_t trig)
+{
+    int ret;
+    int running = test_bit(_VCPUF_running, &v->vcpu_flags);
+
+    ret = vmx_vcpu_pend_interrupt(v, vec);
+    vcpu_unblock(v);
+    if (running)
+        smp_send_event_check_cpu(v->processor);
+    return ret;
+}
diff -r 2b0596c8a031 -r 169687dab774 xen/arch/ia64/vmx/vmx_hypercall.c
--- a/xen/arch/ia64/vmx/vmx_hypercall.c Mon Nov 13 10:56:08 2006 -0700
+++ b/xen/arch/ia64/vmx/vmx_hypercall.c Mon Nov 13 11:02:37 2006 -0700
@@ -34,6 +34,7 @@
 #include <public/version.h>
 #include <asm/dom_fw.h>
 #include <xen/domain.h>
+#include <asm/vmx.h> 
 
 long
 do_hvm_op(unsigned long op, XEN_GUEST_HANDLE(void) arg)
@@ -78,6 +79,31 @@ do_hvm_op(unsigned long op, XEN_GUEST_HA
         break;
     }
 
+    case HVMOP_set_irq_level:
+    {
+        struct xen_hvm_set_irq_level op;
+        struct domain *d;
+
+        if (copy_from_guest(&op, arg, 1))
+            return -EFAULT;
+
+        if (!IS_PRIV(current->domain))
+            return -EPERM;
+
+        d = find_domain_by_id(op.domid);
+        if (d == NULL)
+            return -ESRCH;
+
+        rc = -EINVAL;
+        if (is_hvm_domain(d)) {
+            vmx_vioapic_set_irq(d, op.irq, op.level);
+            rc = 0;
+        }
+
+        put_domain(d);
+        break;
+    }
+
     default:
         gdprintk(XENLOG_INFO, "Bad HVM op %ld.\n", op);
         rc = -ENOSYS;
diff -r 2b0596c8a031 -r 169687dab774 xen/include/asm-ia64/vmx.h
--- a/xen/include/asm-ia64/vmx.h        Mon Nov 13 10:56:08 2006 -0700
+++ b/xen/include/asm-ia64/vmx.h        Mon Nov 13 11:02:37 2006 -0700
@@ -55,6 +55,7 @@ extern void vmx_relinquish_vcpu_resource
 extern void vmx_relinquish_vcpu_resources(struct vcpu *v);
 extern void vmx_die_if_kernel(char *str, struct pt_regs *regs, long err);
 extern void vmx_send_assist_req(struct vcpu *v);
+extern void vmx_vioapic_set_irq(struct domain *d, int irq, int level);
 
 static inline vcpu_iodata_t *get_vio(struct domain *d, unsigned long cpu)
 {
diff -r 2b0596c8a031 -r 169687dab774 xen/include/asm-ia64/vmx_platform.h
--- a/xen/include/asm-ia64/vmx_platform.h       Mon Nov 13 10:56:08 2006 -0700
+++ b/xen/include/asm-ia64/vmx_platform.h       Mon Nov 13 11:02:37 2006 -0700
@@ -56,10 +56,10 @@ extern uint64_t dummy_tmr[];
 #define VLAPIC_ID(l) (uint16_t)(((l)->vcpu->arch.privregs->lid) >> 16)
 #define VLAPIC_IRR(l) ((l)->vcpu->arch.privregs->irr[0])
 struct vlapic *apic_round_robin(struct domain *d, uint8_t vector, uint32_t 
bitmap);
-extern int vmx_vcpu_pend_interrupt(struct vcpu *vcpu, uint8_t vector);
+extern int vmx_vlapic_set_irq(struct vcpu *v, uint8_t vec, uint8_t trig);
 static inline int vlapic_set_irq(struct vlapic *t, uint8_t vec, uint8_t trig)
 {
-    return vmx_vcpu_pend_interrupt(t->vcpu, vec);
+    return vmx_vlapic_set_irq(t->vcpu, vec, trig);
 }
 
 enum ioapic_irq_destination_types {

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