iommu/amd: Implements irq_set_vcpu_affinity() hook to setup vapic mode for pass-through devices
This patch implements irq_set_vcpu_affinity() function to set up interrupt
remapping table entry with vapic mode for pass-through devices.
In case requirements for vapic mode are not met, it falls back to set up
the IRTE in legacy mode.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
diff --git a/include/linux/amd-iommu.h b/include/linux/amd-iommu.h
index d8d48ac..09751d3 100644
--- a/include/linux/amd-iommu.h
+++ b/include/linux/amd-iommu.h
@@ -22,6 +22,20 @@
#include <linux/types.h>
+/*
+ * This is mainly used to communicate information back-and-forth
+ * between SVM and IOMMU for setting up and tearing down posted
+ * interrupt
+ */
+struct amd_iommu_pi_data {
+ u32 ga_tag;
+ u32 prev_ga_tag;
+ u64 base;
+ bool is_guest_mode;
+ struct vcpu_data *vcpu_data;
+ void *ir_data;
+};
+
#ifdef CONFIG_AMD_IOMMU
struct task_struct;