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From: Joe Lawrence <joe.lawrence@redhat.com>
To: live-patching@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-kbuild@vger.kernel.org
Subject: [RFC PATCH v6 04/12] livepatch: Add klp-convert annotation helpers
Date: Wed, 16 Feb 2022 11:39:32 -0500	[thread overview]
Message-ID: <20220216163940.228309-5-joe.lawrence@redhat.com> (raw)
In-Reply-To: <20220216163940.228309-1-joe.lawrence@redhat.com>

From: Josh Poimboeuf <jpoimboe@redhat.com>

Define macros KLP_MODULE_RELOC and KLP_SYMPOS in
include/linux/livepatch.h to improve user-friendliness of the livepatch
annotation process.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Joao Moreira <jmoreira@suse.de>
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
---
 include/linux/livepatch.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/linux/livepatch.h b/include/linux/livepatch.h
index 0fb05aae091a..3abb09bd807a 100644
--- a/include/linux/livepatch.h
+++ b/include/linux/livepatch.h
@@ -237,6 +237,18 @@ int klp_apply_section_relocs(struct module *pmod, Elf_Shdr *sechdrs,
 			     unsigned int symindex, unsigned int secindex,
 			     const char *objname);
 
+/* Used to annotate symbol relocations in livepatches */
+#define KLP_MODULE_RELOC(obj)						\
+	struct klp_module_reloc						\
+	__section(".klp.module_relocs." #obj)				\
+	__aligned(4)
+
+#define KLP_SYMPOS(symbol, pos)						\
+	{								\
+		.sym = &symbol,						\
+		.sympos = pos,						\
+	}
+
 #else /* !CONFIG_LIVEPATCH */
 
 static inline int klp_module_coming(struct module *mod) { return 0; }
-- 
2.26.3


  parent reply	other threads:[~2022-02-16 16:39 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-16 16:39 [RFC PATCH v6 00/12] livepatch: klp-convert tool Joe Lawrence
2022-02-16 16:39 ` [RFC PATCH v6 01/12] livepatch: Create and include UAPI headers Joe Lawrence
2022-04-14  8:50   ` Petr Mladek
2022-02-16 16:39 ` [RFC PATCH v6 02/12] kbuild: Support for symbols.klp creation Joe Lawrence
2022-04-14  9:35   ` Petr Mladek
2022-04-14 17:59     ` Nicolas Schier
2022-04-18 18:12       ` Joe Lawrence
2022-02-16 16:39 ` [RFC PATCH v6 03/12] livepatch: Add klp-convert tool Joe Lawrence
2022-02-16 16:46   ` Joe Lawrence
2022-02-16 16:56   ` Joe Lawrence
2022-04-14 15:03   ` elf API: was: " Petr Mladek
2022-04-18 18:01     ` Joe Lawrence
2023-02-06 18:16   ` Marcos Paulo de Souza
2022-02-16 16:39 ` Joe Lawrence [this message]
2022-02-16 16:39 ` [RFC PATCH v6 05/12] modpost: Integrate klp-convert Joe Lawrence
2022-02-16 16:39 ` [RFC PATCH v6 06/12] livepatch: Add sample livepatch module Joe Lawrence
2023-02-07 12:52   ` Marcos Paulo de Souza
2022-02-16 16:39 ` [RFC PATCH v6 07/12] documentation: Update on livepatch elf format Joe Lawrence
2022-02-16 16:39 ` [RFC PATCH v6 08/12] livepatch/selftests: add klp-convert Joe Lawrence
2022-02-16 16:39 ` [RFC PATCH v6 09/12] livepatch/selftests: test multiple sections Joe Lawrence
2022-02-16 16:39 ` [RFC PATCH v6 10/12] livepatch/selftests: add __asm__ symbol renaming examples Joe Lawrence
2022-02-16 17:03   ` Joe Lawrence
2022-02-16 16:39 ` [RFC PATCH v6 11/12] livepatch/selftests: add data relocations test Joe Lawrence
2022-02-16 17:12   ` Joe Lawrence
2022-02-16 16:39 ` [RFC PATCH v6 12/12] livepatch/selftests: add static keys test Joe Lawrence
2022-02-16 17:17 ` [RFC PATCH v6 00/12] livepatch: klp-convert tool Joe Lawrence
2023-02-07 12:57 ` Marcos Paulo de Souza
2023-02-07 15:54   ` Joe Lawrence

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