Comment 52 for bug 391461

Oh, and this is the patch that worked for me:

--- nv/nv.c 2009-05-27 03:20:53.000000000 -0700
+++ nv/nv.572433.c 2009-07-05 11:31:27.635210006 -0700
@@ -888,6 +888,7 @@
     unsigned int pat1, pat2, i;
     U008 PAT_WC_index;

+#if 0 /* disabled */
     if (!test_bit(X86_FEATURE_PAT,
             (volatile unsigned long *)&boot_cpu_data.x86_capability))
     {
@@ -895,6 +896,7 @@
             "NVRM: CPU does not support the PAT, falling back to MTRRs.\n");
         return NV_PAT_MODE_DISABLED;
     }
+#endif

     NV_READ_PAT_ENTRIES(pat1, pat2);
     PAT_WC_index = 0xf;