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Re: [Xen-devel] 32-on-64: pvfb issue

To: Markus Armbruster <armbru@xxxxxxxxxx>
Subject: Re: [Xen-devel] 32-on-64: pvfb issue
From: Gerd Hoffmann <kraxel@xxxxxxx>
Date: Wed, 24 Jan 2007 16:25:54 +0100
Cc: Xen devel list <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx>
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> Reading it next to reading feature-update would be much cleaner.

Done, updated patch attached.

cheers,
  Gerd

-- 
Gerd Hoffmann <kraxel@xxxxxxx>
---
 tools/xenfb/xenfb.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

Index: build-32-unstable-13568/tools/xenfb/xenfb.c
===================================================================
--- build-32-unstable-13568.orig/tools/xenfb/xenfb.c
+++ build-32-unstable-13568/tools/xenfb/xenfb.c
@@ -362,12 +362,12 @@ static int xenfb_map_fb(struct xenfb_pri
                 */
                uint32_t *ptr32 = NULL;
                uint32_t *ptr64 = NULL;
-#if defined(__i386_)
-               ptr32 = page->pd;
+#if defined(__i386__)
+               ptr32 = (void*)page->pd;
                ptr64 = ((void*)page->pd) + 4;
 #elif defined(__x86_64__)
                ptr32 = ((void*)page->pd) - 4;
-               ptr64 = page->pd;
+               ptr64 = (void*)page->pd;
 #endif
                if (ptr32) {
                        if (0 == ptr32[1]) {
@@ -383,7 +383,7 @@ static int xenfb_map_fb(struct xenfb_pri
                /* 64bit dom0, 32bit domU */
                mode = 32;
                pd   = ((void*)page->pd) - 4;
-#elif defined(__i386_)
+#elif defined(__i386__)
        } else if (0 == strcmp(xenfb->protocol, XEN_IO_PROTO_ABI_X86_64)) {
                /* 32bit dom0, 64bit domU */
                mode = 64;
@@ -441,9 +441,6 @@ static int xenfb_bind(struct xenfb_devic
        if (xenfb_xs_scanf1(xenfb->xsh, dev->otherend, "event-channel", "%u",
                            &evtchn) < 0)
                return -1;
-       if (xenfb_xs_scanf1(xenfb->xsh, dev->otherend, "protocol", "%63s",
-                           xenfb->protocol) < 0)
-               xenfb->protocol[0] = '\0';
 
        dev->port = xc_evtchn_bind_interdomain(xenfb->evt_xch,
                                               dev->otherend_id, evtchn);
@@ -567,6 +564,9 @@ int xenfb_attach_dom(struct xenfb *xenfb
                errno = ENOTSUP;
                goto error;
        }
+       if (xenfb_xs_scanf1(xsh, xenfb->fb.otherend, "protocol", "%63s",
+                           xenfb->protocol) < 0)
+               xenfb->protocol[0] = '\0';
        xenfb_xs_printf(xsh, xenfb->fb.nodename, "request-update", "1");
 
        /* TODO check for permitted ranges */
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