From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Wed, 8 Jul 2015 19:58:41 +0000 (-0400)
Subject: xen/pt: Don't slurp wholesale the PCI configuration registers
X-Git-Tag: qemu-xen-4.7.0-rc1~24
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=f6787aedc9043bffc5ee5b64c6d46b8fc7298a96;p=qemu-xen.git

xen/pt: Don't slurp wholesale the PCI configuration registers

Instead we have the emulation registers ->init functions which
consult the host values to see what the initial value should be
and they are responsible for populating the dev.config.

Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---

diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index da9015c191..aa96288236 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -790,12 +790,7 @@ static int xen_pt_initfn(PCIDevice *d)
     }
 
     /* Initialize virtualized PCI configuration (Extended 256 Bytes) */
-    rc = xen_host_pci_get_block(&s->real_device, 0, d->config,
-                                PCI_CONFIG_SPACE_SIZE);
-    if (rc < 0) {
-        XEN_PT_ERR(d,"Could not read PCI_CONFIG space! (rc:%d)\n", rc);
-        goto err_out;
-    }
+    memset(d->config, 0, PCI_CONFIG_SPACE_SIZE);
 
     s->memory_listener = xen_pt_memory_listener;
     s->io_listener = xen_pt_io_listener;