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[PATCH 02/15] xen/arm/gic: Enable interrupt assignment to running VM
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Henry Wang <xin.wang2@xxxxxxx>
- Date: Wed, 24 Apr 2024 11:34:36 +0800
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- Cc: Vikram Garhwal <fnu.vikram@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, "Volodymyr Babchuk" <Volodymyr_Babchuk@xxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>, Henry Wang <xin.wang2@xxxxxxx>
- Delivery-date: Wed, 24 Apr 2024 03:35:12 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
From: Vikram Garhwal <fnu.vikram@xxxxxxxxxx>
Enable interrupt assign/remove for running VMs in CONFIG_OVERLAY_DTB.
Currently, irq_route and mapping is only allowed at the domain creation. Adding
exception for CONFIG_OVERLAY_DTB.
Signed-off-by: Vikram Garhwal <fnu.vikram@xxxxxxxxxx>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxx>
Signed-off-by: Henry Wang <xin.wang2@xxxxxxx>
---
xen/arch/arm/gic.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 44c40e86de..a775f886ed 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -140,8 +140,10 @@ int gic_route_irq_to_guest(struct domain *d, unsigned int
virq,
* back to the physical IRQ. To prevent get unsync, restrict the
* routing to when the Domain is been created.
*/
+#ifndef CONFIG_OVERLAY_DTB
if ( d->creation_finished )
return -EBUSY;
+#endif
ret = vgic_connect_hw_irq(d, NULL, virq, desc, true);
if ( ret )
@@ -171,8 +173,10 @@ int gic_remove_irq_from_guest(struct domain *d, unsigned
int virq,
* Removing an interrupt while the domain is running may have
* undesirable effect on the vGIC emulation.
*/
+#ifndef CONFIG_OVERLAY_DTB
if ( !d->is_dying )
return -EBUSY;
+#endif
desc->handler->shutdown(desc);
--
2.34.1
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