Subject: privcmd interface addition to support share operations from Dom0
userspace
We create to simple privcmd ops to create and grant access to shares.
diff -r 6d476981e3a5 -r 07a00d96357d
linux-2.6-xen-sparse/drivers/xen/privcmd/privcmd.c
--- a/linux-2.6-xen-sparse/drivers/xen/privcmd/privcmd.c Sun May 28
14:49:17 2006
+++ b/linux-2.6-xen-sparse/drivers/xen/privcmd/privcmd.c Wed May 31
05:33:38 2006
@@ -268,6 +268,7 @@
set_bit(__HYPERVISOR_xen_version, hypercall_permission_map);
set_bit(__HYPERVISOR_sched_op, hypercall_permission_map);
set_bit(__HYPERVISOR_sched_op_compat, hypercall_permission_map);
+ set_bit(__HYPERVISOR_share_op, hypercall_permission_map);
set_bit(__HYPERVISOR_event_channel_op_compat,
hypercall_permission_map);
diff -r 6d476981e3a5 -r 07a00d96357d tools/libxc/xc_domain.c
--- a/tools/libxc/xc_domain.c Sun May 28 14:49:17 2006
+++ b/tools/libxc/xc_domain.c Wed May 31 05:33:38 2006
@@ -482,6 +482,25 @@
return rc;
}
+
+share_ref_t xc_create_shared_pages(int xc_handle, unsigned int num_pages)
+{
+ DECLARE_DOM0_OP;
+
+ op.cmd = DOM0_CREATESHAREDPAGES;
+ op.u.createsharedpages.num = num_pages;
+ return do_dom0_op(xc_handle, &op);
+}
+
+int xc_grant_shared_pages(int xc_handle, domid_t domid, share_ref_t share_ref)
+{
+ DECLARE_DOM0_OP;
+
+ op.cmd = DOM0_GRANTSHAREDPAGES;
+ op.u.grantsharedpages.domain = domid;
+ op.u.grantsharedpages.share_ref = share_ref;
+ return do_dom0_op(xc_handle, &op);
+}
int xc_domain_irq_permission(int xc_handle,
uint32_t domid,
diff -r 6d476981e3a5 -r 07a00d96357d tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Sun May 28 14:49:17 2006
+++ b/tools/libxc/xenctrl.h Wed May 31 05:33:38 2006
@@ -21,6 +21,7 @@
#include <xen/memory.h>
#include <xen/acm.h>
#include <xen/acm_ops.h>
+#include <xen/share.h>
#ifdef __ia64__
#define XC_PAGE_SHIFT 14
@@ -584,6 +585,10 @@
int xc_version(int xc_handle, int cmd, void *arg);
+/* Create & add permissions to sharable pages. */
+share_ref_t xc_create_shared_pages(int xc_handle, unsigned int num_pages);
+int xc_grant_shared_pages(int xc_handle, domid_t domid, share_ref_t share_ref);
+
/*
* MMU updates.
*/
--
ccontrol: http://ccontrol.ozlabs.org
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