[PATCH v2 01/11] x86/hvm: drop vcpu parameter from vlapic EOI callbacks

[Roger Pau Monne <roger.pau@xxxxxxxxxx>]

EOIs are always executed in guest vCPU context, so there's no reason to
pass a vCPU parameter around as can be fetched from current.

While there make the vector parameter of both callbacks unsigned int.

No functional change intended.

Suggested-by: Paul Durrant <pdurrant@xxxxxxxxxx>
Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
---
Changes since v1:
 - New in this version.
---
 xen/arch/x86/hvm/vioapic.c        | 5 +++--
 xen/arch/x86/hvm/vlapic.c         | 7 ++-----
 xen/drivers/passthrough/io.c      | 4 +++-
 xen/include/asm-x86/hvm/io.h      | 2 +-
 xen/include/asm-x86/hvm/vioapic.h | 2 +-
 5 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/xen/arch/x86/hvm/vioapic.c b/xen/arch/x86/hvm/vioapic.c
index 67d4a6237f..0fb9147d99 100644
--- a/xen/arch/x86/hvm/vioapic.c
+++ b/xen/arch/x86/hvm/vioapic.c
@@ -353,7 +353,7 @@ static int vioapic_write(
 
 #if VIOAPIC_VERSION_ID >= 0x20
     case VIOAPIC_REG_EOI:
-        vioapic_update_EOI(v->domain, val);
+        vioapic_update_EOI(val);
         break;
 #endif
 
@@ -495,8 +495,9 @@ void vioapic_irq_positive_edge(struct domain *d, unsigned 
int irq)
     }
 }
 
-void vioapic_update_EOI(struct domain *d, u8 vector)
+void vioapic_update_EOI(unsigned int vector)
 {
+    struct domain *d = current->domain;
     struct hvm_irq *hvm_irq = hvm_domain_irq(d);
     union vioapic_redir_entry *ent;
     unsigned int i;
diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c
index 4e3861eb7d..ae737403f3 100644
--- a/xen/arch/x86/hvm/vlapic.c
+++ b/xen/arch/x86/hvm/vlapic.c
@@ -459,13 +459,10 @@ void vlapic_EOI_set(struct vlapic *vlapic)
 
 void vlapic_handle_EOI(struct vlapic *vlapic, u8 vector)
 {
-    struct vcpu *v = vlapic_vcpu(vlapic);
-    struct domain *d = v->domain;
-
     if ( vlapic_test_vector(vector, &vlapic->regs->data[APIC_TMR]) )
-        vioapic_update_EOI(d, vector);
+        vioapic_update_EOI(vector);
 
-    hvm_dpci_msi_eoi(d, vector);
+    hvm_dpci_msi_eoi(vector);
 }
 
 static bool_t is_multicast_dest(struct vlapic *vlapic, unsigned int short_hand,
diff --git a/xen/drivers/passthrough/io.c b/xen/drivers/passthrough/io.c
index 6b1305a3e5..54f3e7b540 100644
--- a/xen/drivers/passthrough/io.c
+++ b/xen/drivers/passthrough/io.c
@@ -874,8 +874,10 @@ static int _hvm_dpci_msi_eoi(struct domain *d,
     return 0;
 }
 
-void hvm_dpci_msi_eoi(struct domain *d, int vector)
+void hvm_dpci_msi_eoi(unsigned int vector)
 {
+    struct domain *d = current->domain;
+
     if ( !is_iommu_enabled(d) ||
          (!hvm_domain_irq(d)->dpci && !is_hardware_domain(d)) )
        return;
diff --git a/xen/include/asm-x86/hvm/io.h b/xen/include/asm-x86/hvm/io.h
index 558426b772..adec0f566a 100644
--- a/xen/include/asm-x86/hvm/io.h
+++ b/xen/include/asm-x86/hvm/io.h
@@ -159,7 +159,7 @@ struct hvm_hw_stdvga {
 void stdvga_init(struct domain *d);
 void stdvga_deinit(struct domain *d);
 
-extern void hvm_dpci_msi_eoi(struct domain *d, int vector);
+extern void hvm_dpci_msi_eoi(unsigned int vector);
 
 /* Decode a PCI port IO access into a bus/slot/func/reg. */
 unsigned int hvm_pci_decode_addr(unsigned int cf8, unsigned int addr,
diff --git a/xen/include/asm-x86/hvm/vioapic.h 
b/xen/include/asm-x86/hvm/vioapic.h
index d6f4e12d54..fd602f8830 100644
--- a/xen/include/asm-x86/hvm/vioapic.h
+++ b/xen/include/asm-x86/hvm/vioapic.h
@@ -64,7 +64,7 @@ int vioapic_init(struct domain *d);
 void vioapic_deinit(struct domain *d);
 void vioapic_reset(struct domain *d);
 void vioapic_irq_positive_edge(struct domain *d, unsigned int irq);
-void vioapic_update_EOI(struct domain *d, u8 vector);
+void vioapic_update_EOI(unsigned int vector);
 
 int vioapic_get_mask(const struct domain *d, unsigned int gsi);
 int vioapic_get_vector(const struct domain *d, unsigned int gsi);
-- 
2.28.0