x86/hvm: change EOI exit bitmap helper parameter

Change the last parameter of the update_eoi_exit_bitmap helper to be a
set/clear boolean instead of a triggering field. This is already
inline with how the function is implemented, and will allow deciding
whether an exit is required by the higher layers that call into
update_eoi_exit_bitmap. Note that the current behavior is not changed
by this patch.

No functional change intended.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>

xen/arch/x86/hvm/vmx/vmx.c

@@ -1885,9 +1885,9 @@ static void vmx_set_info_guest(struct vcpu *v)
     vmx_vmcs_exit(v);
 }
 
-static void vmx_update_eoi_exit_bitmap(struct vcpu *v, u8 vector, u8 trig)
+static void vmx_update_eoi_exit_bitmap(struct vcpu *v, uint8_t vector, bool set)
 {
-    if ( trig )
+    if ( set )
         vmx_set_eoi_exit_bitmap(v, vector);
     else
         vmx_clear_eoi_exit_bitmap(v, vector);

xen/include/asm-x86/hvm/hvm.h

@@ -192,7 +192,7 @@ struct hvm_function_table {
     void (*nhvm_domain_relinquish_resources)(struct domain *d);
 
     /* Virtual interrupt delivery */
-    void (*update_eoi_exit_bitmap)(struct vcpu *v, u8 vector, u8 trig);
+    void (*update_eoi_exit_bitmap)(struct vcpu *v, uint8_t vector, bool set);
     void (*process_isr)(int isr, struct vcpu *v);
     void (*deliver_posted_intr)(struct vcpu *v, u8 vector);
     void (*sync_pir_to_irr)(struct vcpu *v);