[Xen-devel] Fwd: [osrc-patches] [PATCH 3 of 7 V4] amd iommu: Add a hypercall for hvmloader

[Wei Wang <wei.wang2@xxxxxxx>]

# HG changeset patch
# User Wei Wang <wei.wang2@xxxxxxx>
# Date 1327066823 -3600
# Node ID c5cd29b41f2526bb4f93c76ceade924feac1f1c3
# Parent  ea3af8fa078c07d357de79931a102450b59156ea
amd iommu: Add a hypercall for hvmloader.
IOMMU MMIO base address is dynamically allocated by firmware.
This patch allows hvmloader to notify hypervisor where the
iommu mmio pages are.

Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>

diff -r ea3af8fa078c -r c5cd29b41f25 xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c    Fri Jan 20 14:40:20 2012 +0100
+++ b/xen/arch/x86/hvm/hvm.c    Fri Jan 20 14:40:23 2012 +0100
@@ -65,6 +65,7 @@
 #include <public/memory.h>
 #include <asm/mem_event.h>
 #include <public/mem_event.h>
+#include <asm/hvm/svm/amd-iommu-proto.h>

 bool_t __read_mostly hvm_enabled;

@@ -3673,6 +3674,9 @@ long do_hvm_op(unsigned long op, XEN_GUE
             case HVM_PARAM_BUFIOREQ_EVTCHN:
                 rc = -EINVAL;
                 break;
+            case HVM_PARAM_IOMMU_BASE:
+                rc = guest_iommu_set_base(d, a.value);
+                break;
             }

             if ( rc == 0 )
diff -r ea3af8fa078c -r c5cd29b41f25 xen/include/public/hvm/params.h
--- a/xen/include/public/hvm/params.h   Fri Jan 20 14:40:20 2012 +0100
+++ b/xen/include/public/hvm/params.h   Fri Jan 20 14:40:23 2012 +0100
@@ -141,7 +141,8 @@

 /* Boolean: Enable nestedhvm (hvm only) */
 #define HVM_PARAM_NESTEDHVM    24
+#define HVM_PARAM_IOMMU_BASE   27

-#define HVM_NR_PARAMS          27
+#define HVM_NR_PARAMS          28

 #endif /* __XEN_PUBLIC_HVM_PARAMS_H__ */
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