uprobes: Fix uprobes on MIPS, allow for a cache flush after ixol breakpoint creation

Commit:

  72e6ae285a1d ('ARM: 8043/1: uprobes need icache flush after xol write'

... has introduced an arch-specific method to ensure all caches are
flushed appropriately after an instruction is written to an XOL page.

However, when the XOL area is created and the out-of-line breakpoint
instruction is copied, caches are not flushed at all and stale data may
be found in icache.

Replace a simple copy_to_page() with arch_uprobe_copy_ixol() to allow
the arch to ensure all caches are updated accordingly.

This change fixes uprobes on MIPS InterAptiv (tested on Creator Ci40).

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Victor Kamensky <victor.kamensky@linaro.org>
Cc: linux-mips@linux-mips.org
Link: http://lkml.kernel.org/r/1481625657-22850-1-git-send-email-marcin.nowakowski@imgtec.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

path: root/curvetun_mgmt_servers.h

#ifndef CT_SERVMGMT_H
#define CT_SERVMGMT_H

#include <stdio.h>
#include "curve.h"

extern void parse_userfile_and_generate_serv_store_or_die(char *homedir);
extern void dump_serv_store(void);
extern void get_serv_store_entry_by_alias(char *alias, size_t len,
					  char **host, char **port, int *udp);
extern struct curve25519_proto *get_serv_store_entry_proto_inf(void);
extern unsigned char *get_serv_store_entry_auth_token(void);
extern void destroy_serv_store(void);

#endif /* CT_SERVMGMT_H */