Merge remote-tracking branch 'sstabellini/xen-170114' into staging

* sstabellini/xen-170114:
  xen_pt: Fix passthrough of device with ROM.
  xen_pt: Fix debug output.
  xenfb: map framebuffer read-only and handle unmap errors

Message-id: alpine.DEB.2.02.1401171537140.21510@kaball.uk.xensource.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/display/xenfb.c

@@ -495,7 +495,7 @@ static int xenfb_map_fb(struct XenFB *xenfb)
     munmap(map, n_fbdirs * XC_PAGE_SIZE);
 
     xenfb->pixels = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom,
-					 PROT_READ | PROT_WRITE, fbmfns, xenfb->fbpages);
+            PROT_READ, fbmfns, xenfb->fbpages);
     if (xenfb->pixels == NULL)
 	goto out;
 
@@ -903,6 +903,11 @@ static void fb_disconnect(struct XenDevice *xendev)
     fb->pixels = mmap(fb->pixels, fb->fbpages * XC_PAGE_SIZE,
                       PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON,
                       -1, 0);
+    if (fb->pixels == MAP_FAILED) {
+        xen_be_printf(xendev, 0,
+                "Couldn't replace the framebuffer with anonymous memory errno=%d\n",
+                errno);
+    }
     common_unbind(&fb->c);
     fb->feature_update = 0;
     fb->bug_trigger    = 0;

hw/xen/xen_pt.c

@@ -420,8 +420,8 @@ static int xen_pt_register_regions(XenPCIPassthroughState *s)
                               "xen-pci-pt-bar", r->size);
         pci_register_bar(&s->dev, i, type, &s->bar[i]);
 
-        XEN_PT_LOG(&s->dev, "IO region %i registered (size=0x%lx"PRIx64
-                   " base_addr=0x%lx"PRIx64" type: %#x)\n",
+        XEN_PT_LOG(&s->dev, "IO region %i registered (size=0x%08"PRIx64
+                   " base_addr=0x%08"PRIx64" type: %#x)\n",
                    i, r->size, r->base_addr, type);
     }
 
@@ -440,7 +440,7 @@ static int xen_pt_register_regions(XenPCIPassthroughState *s)
 
         s->bases[PCI_ROM_SLOT].access.maddr = d->rom.base_addr;
 
-        memory_region_init_rom_device(&s->rom, OBJECT(s), NULL, NULL,
+        memory_region_init_io(&s->rom, OBJECT(s), &ops, &s->dev,
                               "xen-pci-pt-rom", d->rom.size);
         pci_register_bar(&s->dev, PCI_ROM_SLOT, PCI_BASE_ADDRESS_MEM_PREFETCH,
                          &s->rom);