[Xen-devel] [PATCH 2 of 6 V6] amd iommu: call guest_iommu_set_base from hvmloader

[Wei Wang <wei.wang2@xxxxxxx>]

# HG changeset patch
# User Wei Wang <wei.wang2@xxxxxxx>
# Date 1331210214 -3600
# Node ID e9d74ec1077472f9127c43903811ce3107fc038d
# Parent  810296995a893c1bec898a366f08520fbae755fb
amd iommu: call guest_iommu_set_base from 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 810296995a89 -r e9d74ec10774 xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c    Thu Mar 08 13:36:51 2012 +0100
+++ b/xen/arch/x86/hvm/hvm.c    Thu Mar 08 13:36:54 2012 +0100
@@ -66,6 +66,7 @@
 #include <asm/mem_event.h>
 #include <asm/mem_access.h>
 #include <public/mem_event.h>
+#include <asm/hvm/svm/amd-iommu-proto.h>
 
 bool_t __read_mostly hvm_enabled;
 
@@ -3786,6 +3787,9 @@ 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 810296995a89 -r e9d74ec10774 xen/include/public/hvm/params.h
--- a/xen/include/public/hvm/params.h   Thu Mar 08 13:36:51 2012 +0100
+++ b/xen/include/public/hvm/params.h   Thu Mar 08 13:36:54 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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