A guest has no need to touch these parameters and reading
HVM_PARAM_IOREQ_PFN, HVM_PARAM_BUFIOREQ_PFN, or HVM_PARAM_BUFIOREQ_EVTCHN
may cause Xen to create a default ioreq server where one did not already
exist.
Signed-off-by: Paul Durrant <paul.durr...@citrix.com>
Cc: Keir Fraser <k...@xen.org>
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Andrew Cooper <andrew.coop...@citrix.com>
---
xen/arch/x86/hvm/hvm.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 23c604d..b51c1d5 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -5665,6 +5665,9 @@ static int hvm_allow_set_param(struct domain *d,
case HVM_PARAM_MEMORY_EVENT_MSR:
case HVM_PARAM_IOREQ_SERVER_PFN:
case HVM_PARAM_NR_IOREQ_SERVER_PAGES:
+ case HVM_PARAM_IOREQ_PFN:
+ case HVM_PARAM_BUFIOREQ_PFN:
+ case HVM_PARAM_BUFIOREQ_EVTCHN:
if ( d == current->domain )
rc = -EPERM;
break;
@@ -5880,6 +5883,10 @@ static int hvm_allow_get_param(struct domain *d,
{
case HVM_PARAM_IOREQ_SERVER_PFN:
case HVM_PARAM_NR_IOREQ_SERVER_PAGES:
+ case HVM_PARAM_IOREQ_PFN:
+ case HVM_PARAM_BUFIOREQ_PFN:
+ case HVM_PARAM_BUFIOREQ_EVTCHN:
+ case HVM_PARAM_DM_DOMAIN:
if ( d == current->domain )
rc = -EPERM;
break;
--
1.7.10.4
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