[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [v8][PATCH 05/17] tools/libxc: introduce hypercall for xc_reserved_device_memory_map
> From: Chen, Tiejun > Sent: Monday, December 01, 2014 5:24 PM > > We will introduce that hypercall xc_reserved_device_memory_map > approach to libxc. > > Signed-off-by: Tiejun Chen <tiejun.chen@xxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx> > --- > tools/libxc/include/xenctrl.h | 5 +++++ > tools/libxc/xc_domain.c | 30 ++++++++++++++++++++++++++++++ > 2 files changed, 35 insertions(+) > > diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h > index 84012fe..a3aeac3 100644 > --- a/tools/libxc/include/xenctrl.h > +++ b/tools/libxc/include/xenctrl.h > @@ -1294,6 +1294,11 @@ int xc_domain_set_memory_map(xc_interface > *xch, > int xc_get_machine_memory_map(xc_interface *xch, > struct e820entry entries[], > uint32_t max_entries); > + > +int xc_reserved_device_memory_map(xc_interface *xch, > + uint32_t dom, > + struct > xen_reserved_device_memory entries[], > + uint32_t *max_entries); > #endif > int xc_domain_set_time_offset(xc_interface *xch, > uint32_t domid, > diff --git a/tools/libxc/xc_domain.c b/tools/libxc/xc_domain.c > index 7fd43e9..09fd988 100644 > --- a/tools/libxc/xc_domain.c > +++ b/tools/libxc/xc_domain.c > @@ -679,6 +679,36 @@ int xc_domain_set_memory_map(xc_interface *xch, > > return rc; > } > + > +int xc_reserved_device_memory_map(xc_interface *xch, > + uint32_t domid, > + struct > xen_reserved_device_memory entries[], > + uint32_t *max_entries) > +{ > + int rc; > + struct xen_reserved_device_memory_map xrdmmap = { > + .domid = domid, > + .nr_entries = *max_entries > + }; > + DECLARE_HYPERCALL_BOUNCE(entries, > + sizeof(struct > xen_reserved_device_memory) * > + *max_entries, > XC_HYPERCALL_BUFFER_BOUNCE_OUT); > + > + if ( xc_hypercall_bounce_pre(xch, entries) ) > + return -1; > + > + set_xen_guest_handle(xrdmmap.buffer, entries); > + > + rc = do_memory_op(xch, XENMEM_reserved_device_memory_map, > + &xrdmmap, sizeof(xrdmmap)); > + > + xc_hypercall_bounce_post(xch, entries); > + > + *max_entries = xrdmmap.nr_entries; > + > + return rc ? rc : xrdmmap.nr_entries; > +} > + > int xc_get_machine_memory_map(xc_interface *xch, > struct e820entry entries[], > uint32_t max_entries) > -- > 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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