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authorDmitry Torokhov <[email protected]>2022-08-02 10:06:12 -0700
committerDmitry Torokhov <[email protected]>2022-08-02 10:06:12 -0700
commit8bb5e7f4dcd9b9ef22a3ea25c9066a8a968f12dd (patch)
tree0f1383880607a227142f9388a066959926233ff1 /kernel/livepatch/patch.c
parent2a96271fb66c499e4a89d76a89d3d01170c10bef (diff)
parent7c744d00990ea999d27f306f6db5ccb61b1304b2 (diff)
Merge branch 'next' into for-linus
Prepare input updates for 5.20 (or 6.0) merge window.
Diffstat (limited to 'kernel/livepatch/patch.c')
-rw-r--r--kernel/livepatch/patch.c21
1 files changed, 3 insertions, 18 deletions
diff --git a/kernel/livepatch/patch.c b/kernel/livepatch/patch.c
index fe316c021d73..4c4f5a776d80 100644
--- a/kernel/livepatch/patch.c
+++ b/kernel/livepatch/patch.c
@@ -118,25 +118,12 @@ static void notrace klp_ftrace_handler(unsigned long ip,
if (func->nop)
goto unlock;
- klp_arch_set_pc(fregs, (unsigned long)func->new_func);
+ ftrace_instruction_pointer_set(fregs, (unsigned long)func->new_func);
unlock:
ftrace_test_recursion_unlock(bit);
}
-/*
- * Convert a function address into the appropriate ftrace location.
- *
- * Usually this is just the address of the function, but on some architectures
- * it's more complicated so allow them to provide a custom behaviour.
- */
-#ifndef klp_get_ftrace_location
-static unsigned long klp_get_ftrace_location(unsigned long faddr)
-{
- return faddr;
-}
-#endif
-
static void klp_unpatch_func(struct klp_func *func)
{
struct klp_ops *ops;
@@ -153,8 +140,7 @@ static void klp_unpatch_func(struct klp_func *func)
if (list_is_singular(&ops->func_stack)) {
unsigned long ftrace_loc;
- ftrace_loc =
- klp_get_ftrace_location((unsigned long)func->old_func);
+ ftrace_loc = ftrace_location((unsigned long)func->old_func);
if (WARN_ON(!ftrace_loc))
return;
@@ -186,8 +172,7 @@ static int klp_patch_func(struct klp_func *func)
if (!ops) {
unsigned long ftrace_loc;
- ftrace_loc =
- klp_get_ftrace_location((unsigned long)func->old_func);
+ ftrace_loc = ftrace_location((unsigned long)func->old_func);
if (!ftrace_loc) {
pr_err("failed to find location for function '%s'\n",
func->old_name);