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[XEN PATCH v11 6/8] tools/libxc: Allow gsi be mapped into a free pirq
- To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jiqian Chen <Jiqian.Chen@xxxxxxx>
- Date: Sun, 30 Jun 2024 20:33:42 +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@xxxxxxxxxxxxxx>, "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: Sun, 30 Jun 2024 12:34:32 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hypercall PHYSDEVOP_map_pirq support to map a gsi into a specific
pirq or a free pirq, it depends on the parameter pirq(>0 or <0).
But in current xc_physdev_map_pirq, it set *pirq=index when
parameter pirq is <0, it causes to force all cases to be mapped
to a specific pirq. That has some problems, one is caller can't
get a free pirq value, another is that once the pecific pirq was
already mapped to other gsi, then it will fail.
So, change xc_physdev_map_pirq to allow to pass negative parameter
in and then get a free pirq.
Signed-off-by: Jiqian Chen <Jiqian.Chen@xxxxxxx>
Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
Signed-off-by: Jiqian Chen <Jiqian.Chen@xxxxxxx>
---
tools/libs/ctrl/xc_physdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/libs/ctrl/xc_physdev.c b/tools/libs/ctrl/xc_physdev.c
index 460a8e779ce8..e9fcd755fa62 100644
--- a/tools/libs/ctrl/xc_physdev.c
+++ b/tools/libs/ctrl/xc_physdev.c
@@ -50,7 +50,7 @@ int xc_physdev_map_pirq(xc_interface *xch,
map.domid = domid;
map.type = MAP_PIRQ_TYPE_GSI;
map.index = index;
- map.pirq = *pirq < 0 ? index : *pirq;
+ map.pirq = *pirq;
rc = do_physdev_op(xch, PHYSDEVOP_map_pirq, &map, sizeof(map));
--
2.34.1
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