# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1192097456 -32400
# Node ID 6f9435bb6a195a52cb43799b82cc24cdc7a298f3
# Parent 9009a8f49f11378d562a4aed005b17f136a773c0
implement set/gethvmcontext hypercall
PATCHNAME: implement_set_get_hvmcontext_hypercall
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
diff -r 9009a8f49f11 -r 6f9435bb6a19 xen/arch/ia64/xen/dom0_ops.c
--- a/xen/arch/ia64/xen/dom0_ops.c Thu Oct 11 20:10:30 2007 +0900
+++ b/xen/arch/ia64/xen/dom0_ops.c Thu Oct 11 19:10:56 2007 +0900
@@ -24,6 +24,9 @@
#include <xen/errno.h>
#include <xen/nodemask.h>
#include <asm/dom_fw_utils.h>
+#include <asm/hvm/support.h>
+#include <xsm/xsm.h>
+#include <public/hvm/save.h>
#define get_xen_guest_handle(val, hnd) do { val = (hnd).p; } while (0)
@@ -217,6 +220,109 @@ long arch_do_domctl(xen_domctl_t *op, XE
}
break;
+ case XEN_DOMCTL_sethvmcontext:
+ {
+ struct hvm_domain_context c;
+ struct domain *d;
+
+ c.cur = 0;
+ c.size = op->u.hvmcontext.size;
+ c.data = NULL;
+
+ ret = -ESRCH;
+ if ( (d = rcu_lock_domain_by_id(op->domain)) == NULL )
+ break;
+
+#ifdef CONFIG_X86
+ ret = xsm_hvmcontext(d, op->cmd);
+ if ( ret )
+ goto sethvmcontext_out;
+#endif /* CONFIG_X86 */
+
+ ret = -EINVAL;
+ if ( !is_hvm_domain(d) )
+ goto sethvmcontext_out;
+
+ ret = -ENOMEM;
+ if ( (c.data = xmalloc_bytes(c.size)) == NULL )
+ goto sethvmcontext_out;
+
+ ret = -EFAULT;
+ if ( copy_from_guest(c.data, op->u.hvmcontext.buffer, c.size) != 0)
+ goto sethvmcontext_out;
+
+ domain_pause(d);
+ ret = hvm_load(d, &c);
+ domain_unpause(d);
+
+ sethvmcontext_out:
+ if ( c.data != NULL )
+ xfree(c.data);
+
+ rcu_unlock_domain(d);
+ }
+ break;
+
+ case XEN_DOMCTL_gethvmcontext:
+ {
+ struct hvm_domain_context c;
+ struct domain *d;
+
+ ret = -ESRCH;
+ if ( (d = rcu_lock_domain_by_id(op->domain)) == NULL )
+ break;
+
+#ifdef CONFIG_X86
+ ret = xsm_hvmcontext(d, op->cmd);
+ if ( ret )
+ goto gethvmcontext_out;
+#endif /* CONFIG_X86 */
+
+ ret = -EINVAL;
+ if ( !is_hvm_domain(d) )
+ goto gethvmcontext_out;
+
+ c.cur = 0;
+ c.size = hvm_save_size(d);
+ c.data = NULL;
+
+ if ( guest_handle_is_null(op->u.hvmcontext.buffer) )
+ {
+ /* Client is querying for the correct buffer size */
+ op->u.hvmcontext.size = c.size;
+ ret = 0;
+ goto gethvmcontext_out;
+ }
+
+ /* Check that the client has a big enough buffer */
+ ret = -ENOSPC;
+ if ( op->u.hvmcontext.size < c.size )
+ goto gethvmcontext_out;
+
+ /* Allocate our own marshalling buffer */
+ ret = -ENOMEM;
+ if ( (c.data = xmalloc_bytes(c.size)) == NULL )
+ goto gethvmcontext_out;
+
+ domain_pause(d);
+ ret = hvm_save(d, &c);
+ domain_unpause(d);
+
+ op->u.hvmcontext.size = c.cur;
+ if ( copy_to_guest(op->u.hvmcontext.buffer, c.data, c.size) != 0 )
+ ret = -EFAULT;
+
+ gethvmcontext_out:
+ if ( copy_to_guest(u_domctl, op, 1) )
+ ret = -EFAULT;
+
+ if ( c.data != NULL )
+ xfree(c.data);
+
+ rcu_unlock_domain(d);
+ }
+ break;
+
default:
printk("arch_do_domctl: unrecognized domctl: %d!!!\n",op->cmd);
ret = -ENOSYS;
16069_6f9435bb6a19_implement_set_get_hvmcontext_hypercall.patch
Description: Text Data
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