[PATCH v1 10/10] xen/arm: domain_build: Don't expose the "iommus" property to the guest

From: Oleksandr Tyshchenko <olekstysh@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: wei.liu2@citrix.com, julien.grall@arm.com,
	sstabellini@kernel.org, ian.jackson@eu.citrix.com,
	jbeulich@suse.com
Subject: [PATCH v1 10/10] xen/arm: domain_build: Don't expose the "iommus" property to the guest
Date: Wed, 10 May 2017 17:03:14 +0300	[thread overview]
Message-ID: <1494424994-26232-11-git-send-email-olekstysh@gmail.com> (raw)
In-Reply-To: <1494424994-26232-1-git-send-email-olekstysh@gmail.com>

From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>

We don't passthrough IOMMU device to DOM0 even if it is not used by
Xen. Therefore exposing the property that describes the IOMMU
master interfaces of the device does not make any sense.

Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
---
 xen/arch/arm/domain_build.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 3abacc0..2defb60 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -432,6 +432,10 @@ static int write_properties(struct domain *d, struct kernel_info *kinfo,
             continue;
         }
 
+        /* Don't expose the property "iommus" to the guest */
+        if ( dt_property_name_is_equal(prop, "iommus") )
+            continue;
+
         res = fdt_property(kinfo->fdt, prop->name, prop_data, prop_len);
 
         if ( res )
-- 
2.7.4


_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
