[xen master] ARM: new VGIC: Add vgic_v2_enable

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[xen master] ARM: new VGIC: Add vgic_v2_enable

patchbot
commit 848fc5948ac6a2351fb67bd52cde20ccb31e536c
Author:     Andre Przywara <[hidden email]>
AuthorDate: Wed Feb 7 14:53:03 2018 +0000
Commit:     Stefano Stabellini <[hidden email]>
CommitDate: Thu Mar 29 10:37:03 2018 -0700

    ARM: new VGIC: Add vgic_v2_enable
   
    Enable the VGIC operation by properly initialising the registers
    in the hypervisor GIC interface.
   
    This is based on Linux commit f7b6985cc3d0, written by Eric Auger.
   
    Signed-off-by: Andre Przywara <[hidden email]>
    Acked-by: Julien Grall <[hidden email]>
    Acked-by: Stefano Stabellini <[hidden email]>
---
 xen/arch/arm/vgic/vgic-v2.c | 6 ++++++
 xen/arch/arm/vgic/vgic.h    | 1 +
 2 files changed, 7 insertions(+)

diff --git a/xen/arch/arm/vgic/vgic-v2.c b/xen/arch/arm/vgic/vgic-v2.c
index 4ad018e904..e4141eaf26 100644
--- a/xen/arch/arm/vgic/vgic-v2.c
+++ b/xen/arch/arm/vgic/vgic-v2.c
@@ -249,6 +249,12 @@ void vgic_v2_populate_lr(struct vcpu *vcpu, struct vgic_irq *irq, int lr)
     gic_hw_ops->write_lr(lr, &lr_val);
 }
 
+void vgic_v2_enable(struct vcpu *vcpu)
+{
+    /* Get the show on the road... */
+    gic_hw_ops->update_hcr_status(GICH_HCR_EN, true);
+}
+
 /*
  * Local variables:
  * mode: C
diff --git a/xen/arch/arm/vgic/vgic.h b/xen/arch/arm/vgic/vgic.h
index 4ed1ef683a..76b50fe812 100644
--- a/xen/arch/arm/vgic/vgic.h
+++ b/xen/arch/arm/vgic/vgic.h
@@ -66,6 +66,7 @@ void vgic_sync_hardware_irq(struct domain *d,
 void vgic_v2_fold_lr_state(struct vcpu *vcpu);
 void vgic_v2_populate_lr(struct vcpu *vcpu, struct vgic_irq *irq, int lr);
 void vgic_v2_set_underflow(struct vcpu *vcpu);
+void vgic_v2_enable(struct vcpu *vcpu);
 int vgic_register_dist_iodev(struct domain *d, gfn_t dist_base_fn,
                              enum vgic_type);
 
--
generated by git-patchbot for /home/xen/git/xen.git#master

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