From: Josh Poimboeuf <jpoimboe@redhat.com>
To: live-patching@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
Jessica Yu <jeyu@kernel.org>,
Joe Lawrence <joe.lawrence@redhat.com>
Subject: [PATCH v3 08/10] livepatch: Remove module_disable_ro() usage
Date: Sat, 25 Apr 2020 06:07:28 -0500 [thread overview]
Message-ID: <36eaeb7551e06e90dbb07e1bdaad8b0f4ff890da.1587812518.git.jpoimboe@redhat.com> (raw)
In-Reply-To: <cover.1587812518.git.jpoimboe@redhat.com>
With arch_klp_init_object_loaded() gone, and apply_relocate_add() now
using text_poke(), livepatch no longer needs to use module_disable_ro().
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
kernel/livepatch/core.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index f9ebb54affab..6b8b3c067be0 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -777,7 +777,6 @@ static int klp_init_object_loaded(struct klp_patch *patch,
if (klp_is_module(obj)) {
mutex_lock(&text_mutex);
- module_disable_ro(patch->mod);
/*
* Only write module-specific relocations here
@@ -787,7 +786,6 @@ static int klp_init_object_loaded(struct klp_patch *patch,
*/
ret = klp_apply_object_relocs(patch, obj);
- module_enable_ro(patch->mod, true);
mutex_unlock(&text_mutex);
if (ret)
--
2.21.1
next prev parent reply other threads:[~2020-04-25 11:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-25 11:07 [PATCH v3 00/10] livepatch,module: Remove .klp.arch and module_disable_ro() Josh Poimboeuf
2020-04-25 11:07 ` [PATCH v3 01/10] livepatch: Disallow vmlinux.ko Josh Poimboeuf
2020-04-25 11:07 ` [PATCH v3 02/10] livepatch: Apply vmlinux-specific KLP relocations early Josh Poimboeuf
2020-04-28 9:20 ` Miroslav Benes
2020-04-25 11:07 ` [PATCH v3 03/10] livepatch: Remove .klp.arch Josh Poimboeuf
2020-04-25 11:07 ` [PATCH v3 04/10] livepatch: Prevent module-specific KLP rela sections from referencing vmlinux symbols Josh Poimboeuf
2020-04-25 11:07 ` [PATCH v3 05/10] s390: Change s390_kernel_write() return type to match memcpy() Josh Poimboeuf
2020-04-25 11:07 ` [PATCH v3 06/10] s390/module: Use s390_kernel_write() for late relocations Josh Poimboeuf
2020-04-25 11:14 ` Josh Poimboeuf
2020-04-25 11:07 ` [PATCH v3 07/10] x86/module: Use text_poke() " Josh Poimboeuf
2020-04-25 11:07 ` Josh Poimboeuf [this message]
2020-04-25 11:07 ` [PATCH v3 09/10] module: Remove module_disable_ro() Josh Poimboeuf
2020-04-28 16:25 ` Jessica Yu
2020-04-28 16:36 ` Josh Poimboeuf
2020-04-28 16:41 ` Jessica Yu
2020-04-28 17:03 ` Josh Poimboeuf
2020-04-28 18:56 ` Jessica Yu
2020-04-25 11:07 ` [PATCH v3 10/10] x86/module: Use text_mutex in apply_relocate_add() Josh Poimboeuf
2020-04-27 12:22 ` [PATCH v3 00/10] livepatch,module: Remove .klp.arch and module_disable_ro() Joe Lawrence
2020-04-27 12:32 ` Miroslav Benes
2020-04-27 16:52 ` Joe Lawrence
2020-04-28 13:48 ` Miroslav Benes
2020-04-28 14:35 ` Josh Poimboeuf
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