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Re: [Xen-devel] [RFC][v2][PATCH 07/14] xen/passthrough: extend hypercall to support rdm reservation policy
- To: Julien Grall <julien.grall@xxxxxxxxxx>, JBeulich@xxxxxxxx, tim@xxxxxxx, konrad.wilk@xxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, kevin.tian@xxxxxxxxx, yang.z.zhang@xxxxxxxxx, ian.campbell@xxxxxxxxxx, wei.liu2@xxxxxxxxxx, Ian.Jackson@xxxxxxxxxxxxx, stefano.stabellini@xxxxxxxxxx
- From: "Chen, Tiejun" <tiejun.chen@xxxxxxxxx>
- Date: Mon, 25 May 2015 10:09:49 +0800
- Cc: xen-devel@xxxxxxxxxxxxx
- Delivery-date: Mon, 25 May 2015 02:10:07 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On 2015/5/22 18:33, Julien Grall wrote:
Hi,
On 22/05/2015 10:35, Tiejun Chen wrote:
diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h
index 0c0ea4a..203c80e 100644
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -499,6 +499,11 @@ struct xen_domctl_assign_device {
XEN_GUEST_HANDLE_64(char) path; /* path to the device
tree node */
} dt;
} u;
+ /* IN */
+#define XEN_DOMCTL_DEV_NO_RDM 0
+#define XEN_DOMCTL_DEV_RDM_RELAXED 1
+#define XEN_DOMCTL_DEV_RDM_STRICT 2
+ uint32_t flag; /* flag of assigned device */
You don't plumb this value for DT neither in the toolstack (see
xc_assign_dt_device) and Xen. Please add a comment saying it's only used
I think we should do this,
@@ -1801,6 +1801,8 @@ int xc_assign_dt_device(
domctl.u.assign_device.dev = XEN_DOMCTL_DEV_DT;
domctl.u.assign_device.u.dt.size = size;
+ /* DT doesn't own any RDM. */
+ domctl.u.assign_device.flag = XEN_DOMCTL_DEV_NO_RDM;
set_xen_guest_handle(domctl.u.assign_device.u.dt.path, path);
rc = do_domctl(xch, &domctl);
Thanks
Tiejun
by PCI and/or the value should always be XEN_DOMCTL_DEV_NO_RDM for DT.
Regards,
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