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[RFC XEN PATCH v5 3/5] x86/pvh: Add PHYSDEVOP_setup_gsi for PVH dom0
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jiqian Chen <Jiqian.Chen@xxxxxxx>
- Date: Fri, 12 Jan 2024 14:13:15 +0800
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- Cc: Jan Beulich <jbeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, "Juergen Gross" <jgross@xxxxxxxx>, "Daniel P . Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Stewart Hildebrand <Stewart.Hildebrand@xxxxxxx>, Huang Rui <Ray.Huang@xxxxxxx>, Jiqian Chen <Jiqian.Chen@xxxxxxx>, Huang Rui <ray.huang@xxxxxxx>
- Delivery-date: Fri, 12 Jan 2024 06:15:20 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On PVH dom0, the gsis don't get registered, but
the gsi of a passthrough device must be configured for it to
be able to be mapped into a hvm domU.
On Linux kernel side, it calles PHYSDEVOP_setup_gsi for
passthrough devices to register gsi when dom0 is PVH.
So, add PHYSDEVOP_setup_gsi for above purpose.
Co-developed-by: Huang Rui <ray.huang@xxxxxxx>
Signed-off-by: Jiqian Chen <Jiqian.Chen@xxxxxxx>
---
xen/arch/x86/hvm/hypercall.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/xen/arch/x86/hvm/hypercall.c b/xen/arch/x86/hvm/hypercall.c
index 493998b42ec5..46f51ee459f6 100644
--- a/xen/arch/x86/hvm/hypercall.c
+++ b/xen/arch/x86/hvm/hypercall.c
@@ -76,6 +76,12 @@ long hvm_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void)
arg)
case PHYSDEVOP_unmap_pirq:
break;
+ case PHYSDEVOP_setup_gsi:
+ if ( !is_hardware_domain(currd) )
+ return -EOPNOTSUPP;
+ ASSERT(!has_pirq(currd));
+ break;
+
case PHYSDEVOP_eoi:
case PHYSDEVOP_irq_status_query:
case PHYSDEVOP_get_free_pirq:
--
2.34.1
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