Ensure all reserved fields of xatp are zero before making hypervisor
call to XEN in xen_map_device_mmio(). xenmem_add_to_physmap_one() in
XEN fails the mapping request if extra.res reserved field in xatp is
not zero for XENMAPSPACE_dev_mmio request.
Signed-off-by: Jiandi An <anjia...@codeaurora.org>
---
drivers/xen/arm-device.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/xen/arm-device.c b/drivers/xen/arm-device.c
index 778acf8..208273b 100644
--- a/drivers/xen/arm-device.c
+++ b/drivers/xen/arm-device.c
@@ -87,6 +87,9 @@ static int xen_map_device_mmio(const struct resource
*resources,
idxs[j] = XEN_PFN_DOWN(r->start) + j;
}
+ /* Ensure reserved fields are set to zero */
+ memset(&xatp, 0, sizeof(xatp));
+
xatp.domid = DOMID_SELF;
xatp.size = nr;
xatp.space = XENMAPSPACE_dev_mmio;
--
Jiandi An
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm
Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux
Foundation Collaborative Project.
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