amd iommu: Compress hyper-transport flags into a single byte

These flags are single bit, no need to be saved as integers.
Add 3 inline helpers to make single bit access easier.
Introduce iommu_has_ht_flag and set_iommu_ht_flags

Signed-off-by: Wei Wang <wei.wang2@amd.com>
Committed-by: Jan Beulich <jbeulich@suse.com>

1 files changed, 1 insertions, 5 deletions

diff --git a/xen/include/asm-x86/amd-iommu.h b/xen/include/asm-x86/amd-iommu.h
index 2719e3a72d..f2e0eb6ce2 100644
--- a/xen/include/asm-x86/amd-iommu.h
+++ b/xen/include/asm-x86/amd-iommu.h
@@ -57,11 +57,7 @@ struct amd_iommu {
     u8 ht_tunnel_support;
     u8 iotlb_support;
 
-    u8 isochronous;
-    u8 coherent;
-    u8 res_pass_pw;
-    u8 pass_pw;
-    u8 ht_tunnel_enable;
+    u8 ht_flags;
 
     void *mmio_base;
     unsigned long mmio_base_phys;