[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] Xen: ARM: Zero reserved fields of xatp before making hypervisor call
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 <anjiandi@xxxxxxxxxxxxxx> --- 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. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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