Up to now the MAPD ITT_addr had been ignored. We will need it
for save/restore. Let's record it in the its_device struct.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
v4 -> v5:
- its_cmd_get_ittaddr macro now returns the actual ITT GPA
v3 -> v4:
- in vgic_its_cmd_handle_mapd, itt_addr directly is shifted
- correct ittaddr bitmask to support 48bit GPA
---
virt/kvm/arm/vgic/vgic-its.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index 0f3c8f3..757598d 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -106,6 +106,7 @@ struct its_device {
/* the head for the list of ITTEs */
struct list_head itt_head;
u32 nb_eventid_bits;
+ gpa_t itt_addr;
u32 device_id;
};
@@ -569,6 +570,7 @@ static u64 its_cmd_mask_field(u64 *its_cmd, int word, int shift, int size)
#define its_cmd_get_id(cmd) its_cmd_mask_field(cmd, 1, 0, 32)
#define its_cmd_get_physical_id(cmd) its_cmd_mask_field(cmd, 1, 32, 32)
#define its_cmd_get_collection(cmd) its_cmd_mask_field(cmd, 2, 0, 16)
+#define its_cmd_get_ittaddr(cmd) (its_cmd_mask_field(cmd, 2, 8, 47) << 8)
#define its_cmd_get_target_addr(cmd) its_cmd_mask_field(cmd, 2, 16, 32)
#define its_cmd_get_validbit(cmd) its_cmd_mask_field(cmd, 2, 63, 1)
@@ -840,6 +842,7 @@ static int vgic_its_cmd_handle_mapd(struct kvm *kvm, struct vgic_its *its,
u32 device_id = its_cmd_get_deviceid(its_cmd);
bool valid = its_cmd_get_validbit(its_cmd);
u8 nb_eventid_bits = its_cmd_get_size(its_cmd);
+ gpa_t itt_addr = its_cmd_get_ittaddr(its_cmd);
struct its_device *device;
if (!vgic_its_check_id(its, its->baser_device_table, device_id))
@@ -871,6 +874,7 @@ static int vgic_its_cmd_handle_mapd(struct kvm *kvm, struct vgic_its *its,
device->device_id = device_id;
device->nb_eventid_bits = nb_eventid_bits;
+ device->itt_addr = itt_addr;
INIT_LIST_HEAD(&device->itt_head);
--
2.5.5
