[Xen-devel] [PATCH 19 of 24] libxc: convert physdevop interface over to hypercall buffers

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1283779691 -3600
# Node ID 30ca51399b65a029af07904ba9b0529ac99c0754
# Parent  d781e6711016a2f15b276499b2ebbd69b16d5dfe
libxc: convert physdevop interface over to hypercall buffers

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

diff -r d781e6711016 -r 30ca51399b65 tools/libxc/xc_private.h
--- a/tools/libxc/xc_private.h  Mon Sep 06 14:28:11 2010 +0100
+++ b/tools/libxc/xc_private.h  Mon Sep 06 14:28:11 2010 +0100
@@ -179,10 +179,10 @@ static inline int do_physdev_op(xc_inter
 static inline int do_physdev_op(xc_interface *xch, int cmd, void *op, size_t 
len)
 {
     int ret = -1;
+    DECLARE_HYPERCALL;
+    DECLARE_HYPERCALL_BOUNCE(op, len, XC_HYPERCALL_BUFFER_BOUNCE_BOTH);
 
-    DECLARE_HYPERCALL;
-
-    if ( hcall_buf_prep(xch, &op, len) != 0 )
+    if ( xc_hypercall_bounce_pre(xch, op) )
     {
         PERROR("Could not lock memory for Xen hypercall");
         goto out1;
@@ -190,7 +190,7 @@ static inline int do_physdev_op(xc_inter
 
     hypercall.op = __HYPERVISOR_physdev_op;
     hypercall.arg[0] = (unsigned long) cmd;
-    hypercall.arg[1] = (unsigned long) op;
+    hypercall.arg[1] = HYPERCALL_BUFFER_AS_ARG(op);
 
     if ( (ret = do_xen_hypercall(xch, &hypercall)) < 0 )
     {
@@ -199,8 +199,7 @@ static inline int do_physdev_op(xc_inter
                     " rebuild the user-space tool set?\n");
     }
 
-    hcall_buf_release(xch, &op, len);
-
+    xc_hypercall_bounce_post(xch, op);
 out1:
     return ret;
 }

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