sh: Look up the trap vector for the page fault notifier. (887f1ae3) · Commits · e / devices / android_kernel_xiaomi_markw

arch/sh/mm/fault_32.c

+4 −9

Original line number	Diff line number	Diff line
		@@ -21,26 +21,21 @@
		#include <asm/tlbflush.h>
		#include <asm/kgdb.h>

		#ifdef CONFIG_KPROBES
		static inline int notify_page_fault(struct pt_regs *regs, int trap)
		{
		int ret = 0;

		#ifdef CONFIG_KPROBES
		if (!user_mode(regs)) {
		preempt_disable();
		if (kprobe_running() && kprobe_fault_handler(regs, trap))
		ret = 1;
		preempt_enable();
		}
		#endif

		return ret;
		}
		#else
		static inline int notify_page_fault(struct pt_regs *regs, int trap)
		{
		return 0;
		}
		#endif

		/*
		* This routine handles page faults. It determines the address,
		@@ -58,7 +53,7 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
		int fault;
		siginfo_t info;

		if (notify_page_fault(regs, writeaccess))
		if (notify_page_fault(regs, lookup_exception_vector()))
		return;

		#ifdef CONFIG_SH_KGDB
		@@ -293,7 +288,7 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
		pte_t *pte;
		pte_t entry;

		if (notify_page_fault(regs, writeaccess))
		if (notify_page_fault(regs, lookup_exception_vector()))
		return 0;

		#ifdef CONFIG_SH_KGDB