[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 08 of 25] libxc: convert evtchn interfaces over to hypercall buffers
# HG changeset patch # User Ian Campbell <ian.campbell@xxxxxxxxxx> # Date 1287650254 -3600 # Node ID 1900730c5bfccbaddf517139c6c4eb390b75237f # Parent c02e7347dc20e1c2b23a71910dcf623928dbf4ea libxc: convert evtchn interfaces over to hypercall buffers Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx> diff -r c02e7347dc20 -r 1900730c5bfc tools/libxc/xc_evtchn.c --- a/tools/libxc/xc_evtchn.c Thu Oct 21 09:37:34 2010 +0100 +++ b/tools/libxc/xc_evtchn.c Thu Oct 21 09:37:34 2010 +0100 @@ -22,31 +22,30 @@ #include "xc_private.h" - static int do_evtchn_op(xc_interface *xch, int cmd, void *arg, size_t arg_size, int silently_fail) { int ret = -1; DECLARE_HYPERCALL; + DECLARE_HYPERCALL_BOUNCE(arg, arg_size, XC_HYPERCALL_BUFFER_BOUNCE_BOTH); + + if ( xc_hypercall_bounce_pre(xch, arg) ) + { + PERROR("do_evtchn_op: bouncing arg failed"); + goto out; + } hypercall.op = __HYPERVISOR_event_channel_op; hypercall.arg[0] = cmd; - hypercall.arg[1] = (unsigned long)arg; - - if ( lock_pages(xch, arg, arg_size) != 0 ) - { - PERROR("do_evtchn_op: arg lock failed"); - goto out; - } + hypercall.arg[1] = HYPERCALL_BUFFER_AS_ARG(arg); if ((ret = do_xen_hypercall(xch, &hypercall)) < 0 && !silently_fail) ERROR("do_evtchn_op: HYPERVISOR_event_channel_op failed: %d", ret); - unlock_pages(xch, arg, arg_size); + xc_hypercall_bounce_post(xch, arg); out: return ret; } - evtchn_port_or_error_t xc_evtchn_alloc_unbound(xc_interface *xch, _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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