linux-kernel - [PATCH v4 09/15] livepatch: remove unnecessary object loaded check

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Message-Id: <8caf49b90f4783afdc366f9005d8d51e104b858d.1484839971.git.jpoimboe@redhat.com>
Date:   Thu, 19 Jan 2017 09:46:17 -0600
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Jessica Yu <jeyu@...hat.com>, Jiri Kosina <jikos@...nel.org>,
        Miroslav Benes <mbenes@...e.cz>, Petr Mladek <pmladek@...e.com>
Cc:     linux-kernel@...r.kernel.org, live-patching@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Heiko Carstens <heiko.carstens@...ibm.com>, x86@...nel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        Vojtech Pavlik <vojtech@...e.com>, Jiri Slaby <jslaby@...e.cz>,
        Chris J Arges <chris.j.arges@...onical.com>,
        Andy Lutomirski <luto@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
        Balbir Singh <bsingharora@...il.com>
Subject: [PATCH v4 09/15] livepatch: remove unnecessary object loaded check

klp_patch_object()'s callers already ensure that the object is loaded,
so its call to klp_is_object_loaded() is unnecessary.

This will also make it possible to move the patching code into a
separate file.

Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
Acked-by: Miroslav Benes <mbenes@...e.cz>
Reviewed-by: Petr Mladek <pmladek@...e.com>
Reviewed-by: Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
---
 kernel/livepatch/core.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index 2dbd355..47ed643 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -467,9 +467,6 @@ static int klp_patch_object(struct klp_object *obj)
 	if (WARN_ON(obj->patched))
 		return -EINVAL;
 
-	if (WARN_ON(!klp_is_object_loaded(obj)))
-		return -EINVAL;
-
 	klp_for_each_func(obj, func) {
 		ret = klp_patch_func(func);
 		if (ret) {
-- 
2.7.4