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--- kernel/nv-pat.c~ 2015-02-22 20:39:43.889075396 -0800
+++ kernel/nv-pat.c 2015-02-22 20:29:33.519735577 -0800
@@ -35,8 +35,13 @@
unsigned long cr0 = read_cr0();
write_cr0(((cr0 & (0xdfffffff)) | 0x40000000));
wbinvd();
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)
+ *cr4 = __read_cr4();
+ if (*cr4 & 0x80) __write_cr4(*cr4 & ~0x80);
+#else
*cr4 = read_cr4();
if (*cr4 & 0x80) write_cr4(*cr4 & ~0x80);
+#endif
__flush_tlb();
}
@@ -46,7 +46,11 @@
wbinvd();
__flush_tlb();
write_cr0((cr0 & 0x9fffffff));
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0)
+ if (cr4 & 0x80) __write_cr4(cr4);
+#else
if (cr4 & 0x80) write_cr4(cr4);
+#endif
}
static int nv_determine_pat_mode(void)
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