Please sign in to comment.
xen: do not map the same GSI twice in PVHVM guests.
commit 68c2c39 upstream. PV on HVM guests map GSIs into event channels. At restore time the event channels are resumed by restore_pirqs. Device drivers might try to register the same GSI again through ACPI at restore time, but the GSI has already been mapped and bound by restore_pirqs. This patch detects these situations and avoids mapping the same GSI multiple times. Without this patch we get: (XEN) irq.c:2235: dom4: pirq 23 or emuirq 28 already mapped and waste a pirq. Signed-off-by: Stefano Stabellini <email@example.com> Signed-off-by: Konrad Rzeszutek Wilk <firstname.lastname@example.org> Signed-off-by: Ben Hutchings <email@example.com>
- Loading branch information...
Showing with 10 additions and 2 deletions.