--- zzzz-none-000/linux-3.10.107/arch/mips/mm/fault.c	2017-06-27 09:49:32.000000000 +0000
+++ vr9-7490-729/linux-3.10.107/arch/mips/mm/fault.c	2021-11-10 11:53:54.000000000 +0000
@@ -26,6 +26,16 @@
 #include <asm/ptrace.h>
 #include <asm/highmem.h>		/* For VMALLOC_END */
 #include <linux/kdebug.h>
+#if defined(CONFIG_NMI_ARBITER_WORKAROUND)
+#include <atheros.h>
+#endif/*--- #if defined(CONFIG_NMI_ARBITER_WORKAROUND) ---*/
+#if defined(CONFIG_AVM_POWER)
+#include <avm/power/power.h>
+#endif/*--- #if defined(CONFIG_AVM_POWER) ---*/
+
+#if defined(CONFIG_AVM_SIMPLE_PROFILING) 
+#include <avm/profile/profile.h>
+#endif /*--- #if defined(CONFIG_AVM_SIMPLE_PROFILING) ---*/ 
 
 /*
  * This routine handles page faults.  It determines the address,
@@ -148,7 +158,21 @@
 	 * make sure we exit gracefully rather than endlessly redo
 	 * the fault.
 	 */
+#if defined(CONFIG_AVM_SIMPLE_PROFILING) 
+    avm_simple_profiling_log(avm_profile_data_type_hw_irq_begin, (unsigned int)regs->cp0_epc, AVM_PROFILE_PAGE_FAULT_ID);
+#endif/*--- #if defined(CONFIG_AVM_SIMPLE_PROFILING)  ---*/
+#if defined(CONFIG_AVM_POWER)
+    avm_page_statistic_fault_get();
+#endif/*--- #if defined(CONFIG_AVM_POWER) ---*/
 	fault = handle_mm_fault(mm, vma, address, flags);
+#if defined(CONFIG_AVM_POWER)
+    avm_page_statistic_fault_put();
+#endif/*--- #if defined(CONFIG_AVM_POWER) ---*/
+
+#if defined(CONFIG_AVM_SIMPLE_PROFILING) 
+    avm_simple_profiling_log(avm_profile_data_type_hw_irq_end, regs->cp0_epc, AVM_PROFILE_PAGE_FAULT_ID);
+#endif/*--- #endif ---*//*--- #if defined(CONFIG_AVM_SIMPLE_PROFILING)  ---*/
+
 
 	if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
 		return;
@@ -226,6 +250,10 @@
 		return;
 	}
 
+write_protect_die:
+#if defined(CONFIG_NMI_ARBITER_WORKAROUND)
+    ath_workaround_nmi_stop();
+#endif/*--- #if defined(CONFIG_NMI_ARBITER_WORKAROUND) ---*/
 	/*
 	 * Oops. The kernel tried to access some bad page. We'll have to
 	 * terminate things with extreme prejudice.
@@ -314,6 +342,12 @@
 		pte_k = pte_offset_kernel(pmd_k, address);
 		if (!pte_present(*pte_k))
 			goto no_context;
+#if defined(CONFIG_AVM_ENHANCED)
+        if(write && !pte_write(*pte_k)) {
+            printk(KERN_ALERT"----- VMALLOC-AREA WRITE-PROTECTED -----\n");
+            goto write_protect_die;
+        }
+#endif/*--- #if defined(CONFIG_AVM_ENHANCED) ---*/
 		return;
 	}
 #endif