[Xen-devel] [PATCH 1/6] ioemu: Initialize blktap backend for FV machines

[Kevin Wolf <kwolf@xxxxxxx>]

PV drivers (and thus blktap) are not only used by PV domains, but also
by HVM guests. Adding a call to the init functions allows them to have
their qemu-dm instance as blktap backend.

Signed-off-by: Kevin Wolf <kwolf@xxxxxxx>
---
 hw/xen_machine_fv.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c
index 976e7e7..a801e46 100644
--- a/hw/xen_machine_fv.c
+++ b/hw/xen_machine_fv.c
@@ -185,6 +185,7 @@ void qemu_invalidate_map_cache(void)
 
 #endif /* defined(MAPCACHE) */
 
+extern void init_blktap(void);
 
 static void xen_init_fv(ram_addr_t ram_size, int vga_ram_size,
                        const char *boot_device, DisplayState *ds,
@@ -210,6 +211,11 @@ static void xen_init_fv(ram_addr_t ram_size, int 
vga_ram_size,
     }
 #endif
 
+#ifndef CONFIG_STUBDOM
+    /* Initialize tapdisk client */
+    init_blktap();
+#endif
+
 #ifdef CONFIG_STUBDOM /* the hvmop is not supported on older hypervisors */
     xc_set_hvm_param(xc_handle, domid, HVM_PARAM_DM_DOMAIN, DOMID_SELF);
 #endif
-- 
1.6.0.2


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