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Jiqian Chen
d6e9a2aab3
Some domains are not aware of the pIRQ abstraction layer that maps interrupt sources into Xen space interrupt numbers. pIRQs values are only exposed to domains that have the option to route physical interrupts over event channels. This creates issues for PCI-passthrough from a PVH domain, as some of the passthrough related hypercalls use pIRQ as references to physical interrupts on the system. One of such interfaces is XEN_DOMCTL_irq_permission, used to grant or revoke access to interrupts, takes a pIRQ as the reference to the interrupt to be adjusted. Since PVH doesn't manage interrupts in terms of pIRQs, introduce a new hypercall that allows setting interrupt permissions based on GSI value rather than pIRQ. Note the GSI hypercall parameters is translated to an IRQ value (in case there are ACPI overrides) before doing the checks. Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com> Signed-off-by: Huang Rui <ray.huang@amd.com> Signed-off-by: Jiqian Chen <Jiqian.Chen@amd.com> Reviewed-by: Daniel P. Smith <dpsmith@apertussolutions.com> Acked-by: Jan Beulich <jbeulich@suse.com>