[Xen-devel] [PATCH mini-os enhancements for vtpm 4/8] disable mfn_is_ram

[Matthew Fioravante <matthew.fioravante@xxxxxxxxxx>]

This patch disables the mfn_is_ram check in mini-os. The current check
is insufficient and fails on some systems with larger than 4gb memory.


diff --git a/extras/mini-os/arch/x86/mm.c b/extras/mini-os/arch/x86/mm.c
--- a/extras/mini-os/arch/x86/mm.c
+++ b/extras/mini-os/arch/x86/mm.c
@@ -850,6 +850,8 @@ unsigned long alloc_contig_pages(int order, unsigned
int addr_bits)
 static long system_ram_end_mfn;
 int mfn_is_ram(unsigned long mfn)
 {
+   /* This is broken on systems with large ammounts of ram. Always
return 0 for now */
+    return 0;
     /* very crude check if a given MFN is memory or not. Probably should
      * make this a little more sophisticated ;) */
     return (mfn <= system_ram_end_mfn) ? 1 : 0;

Attachment: smime.p7s
Description: S/MIME Cryptographic Signature

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel