Re: [Xen-users] [Xen-devel] XEN/arm XENFB support

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Tue, 17 Dec 2013, Stefano Stabellini wrote:
> On Tue, 17 Dec 2013, peter wrote:
> > Thank you for the info/patch Ian.
> > With some modifications to Qemu, I managed to cross compile
> > qemu-system-arm with XEN support.
> > Based on version: 1c514a7734b7f98625a0d18d5e8ee7581f26e50c (Merge remote
> > branch 'perard/cpu-hotplug-port-v2' into xen-staging-master-7).
> > And got my Qemu backend working.
> 
> Nice! Could you please post your patch?

Actually I have just tried it out and with the appended QEMU patch works fine.
I'll come up with a proper patch and send it upstream.

diff --git a/hw/display/xenfb.c b/hw/display/xenfb.c
index f0333a0..e9b1af8 100644
--- a/hw/display/xenfb.c
+++ b/hw/display/xenfb.c
@@ -409,7 +409,7 @@ static void input_event(struct XenDevice *xendev)
 
 /* -------------------------------------------------------------------- */
 
-static void xenfb_copy_mfns(int mode, int count, unsigned long *dst, void *src)
+static void xenfb_copy_mfns(int mode, int count, xen_pfn_t *dst, void *src)
 {
     uint32_t *src32 = src;
     uint64_t *src64 = src;
@@ -424,8 +424,8 @@ static int xenfb_map_fb(struct XenFB *xenfb)
     struct xenfb_page *page = xenfb->c.page;
     char *protocol = xenfb->c.xendev.protocol;
     int n_fbdirs;
-    unsigned long *pgmfns = NULL;
-    unsigned long *fbmfns = NULL;
+    xen_pfn_t *pgmfns = NULL;
+    xen_pfn_t *fbmfns = NULL;
     void *map, *pd;
     int mode, ret = -1;
 
@@ -483,8 +483,8 @@ static int xenfb_map_fb(struct XenFB *xenfb)
     n_fbdirs = xenfb->fbpages * mode / 8;
     n_fbdirs = (n_fbdirs + (XC_PAGE_SIZE - 1)) / XC_PAGE_SIZE;
 
-    pgmfns = g_malloc0(sizeof(unsigned long) * n_fbdirs);
-    fbmfns = g_malloc0(sizeof(unsigned long) * xenfb->fbpages);
+    pgmfns = g_malloc0(sizeof(xen_pfn_t) * n_fbdirs);
+    fbmfns = g_malloc0(sizeof(xen_pfn_t) * xenfb->fbpages);
 
     xenfb_copy_mfns(mode, n_fbdirs, pgmfns, pd);
     map = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom,
diff --git a/xen-all.c b/xen-all.c
index 4a594bd..d45180d 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -381,8 +381,6 @@ static int xen_remove_from_physmap(XenIOState *state,
 
         rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, 
idx, gpfn);
         if (rc) {
-            fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
-                    PRI_xen_pfn" failed: %d\n", idx, gpfn, rc);
             return -rc;
         }
     }
diff --git a/xen-mapcache.c b/xen-mapcache.c
index eda914a..baea376 100644
--- a/xen-mapcache.c
+++ b/xen-mapcache.c
@@ -33,13 +33,8 @@
 #  define DPRINTF(fmt, ...) do { } while (0)
 #endif
 
-#if defined(__i386__)
 #  define MCACHE_BUCKET_SHIFT 16
 #  define MCACHE_MAX_SIZE     (1UL<<31) /* 2GB Cap */
-#elif defined(__x86_64__)
-#  define MCACHE_BUCKET_SHIFT 20
-#  define MCACHE_MAX_SIZE     (1UL<<35) /* 32GB Cap */
-#endif
 #define MCACHE_BUCKET_SIZE (1UL << MCACHE_BUCKET_SHIFT)
 
 /* This is the size of the virtual address space reserve to QEMU that will not


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