From: wangnan0@huawei.com (Wang Nan)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v4 09/34] early kprobes: x86: add definition for vmlinux.lds use.
Date: Mon, 2 Mar 2015 22:24:47 +0800 [thread overview]
Message-ID: <1425306312-3437-10-git-send-email-wangnan0@huawei.com> (raw)
In-Reply-To: <1425306312-3437-1-git-send-email-wangnan0@huawei.com>
This patch defines MAX_OPTINSN_SIZE, MAX_INSN_SIZE and
KPROBE_OPCODE_SIZE for x86 for vmlinux.lds.S use.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
---
arch/x86/kernel/vmlinux.lds.S | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 00bf300..e46d877 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -29,6 +29,16 @@
#undef i386 /* in case the preprocessor is a 32bit one */
+#ifdef CONFIG_EARLY_KPROBES
+# define MAX_INSN_SIZE 16
+# define RELATIVE_ADDR_SIZE 4
+# define RELATIVEJUMP_SIZE 5
+# define KPROBE_OPCODE_SIZE 1
+# define MAX_OPTIMIZED_LENGTH (MAX_INSN_SIZE + RELATIVE_ADDR_SIZE)
+# define MAX_OPTINSN_SIZE ((optprobe_template_end - optprobe_template_entry) + \
+ MAX_OPTIMIZED_LENGTH + RELATIVEJUMP_SIZE)
+#endif
+
OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT)
#ifdef CONFIG_X86_32
--
1.8.4
next prev parent reply other threads:[~2015-03-02 14:24 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-02 14:24 [RFC PATCH v4 00/34] Early kprobe: enable kprobes at very early booting stage Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 01/34] x86, traps: Enable DEBUG_STACK after cpu_init() for TRAP_DB/BP Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 02/34] x86, traps: separate set_intr_gate() and cleanup early_trap_init() Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 03/34] x86, traps: install gates using IST after cpu_init() Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 04/34] early kprobes: within_kprobe_blacklist_early() early Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 05/34] early kprobes: introduce kprobe_is_early for futher early kprobe use Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 06/34] early kprobes: enable kprobe smoke test for early kprobes Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 07/34] early kprobes: init kprobes at very early stage Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 08/34] early kprobes: ARM: add definition for vmlinux.lds use Wang Nan
2015-03-02 14:24 ` Wang Nan [this message]
2015-03-02 14:24 ` [RFC PATCH v4 10/34] early kprobes: introduce early kprobes related code area Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 11/34] early kprobes: introduces macros for allocing early kprobe resources Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 12/34] early kprobes: allows __alloc_insn_slot() from early kprobes slots Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 13/34] early kprobes: alloc optimized kprobe before memory system is ready Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 14/34] early kprobes: use stop_machine() based x86 optimizer Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 15/34] early kprobes: use stop_machine() based optimization method for early kprobes Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 16/34] early kprobes: perhibit probing at early kprobe reserved area Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 17/34] early kprobes: run kprobes smoke test for early kprobes Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 18/34] early kprobes: add CONFIG_EARLY_KPROBES option Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 19/34] ftrace: don't update record flags if code modification fail Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 20/34] ftrace/x86: Ensure rec->flags no change when failure occures Wang Nan
2015-03-02 14:24 ` [RFC PATCH v4 21/34] ftrace: sort ftrace entries earlier Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 22/34] ftrace: allow search ftrace addr before ftrace fully inited Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 23/34] ftrace: notify kprobe when ftrace is initialized Wang Nan
2015-03-03 16:29 ` Petr Mladek
2015-03-02 14:25 ` [RFC PATCH v4 24/34] early kprobes on ftrace: introduce x86 arch_fix_ftrace_early_kprobe() Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 25/34] ftrace: don't fire ftrace_bug if the instruction is taken by early kprobes Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 26/34] early kprobes on ftrace: x86: arch code for retrieving kprobed instruction Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 27/34] early kprobes on ftrace: kprobe_on_ftrace_get_old_insn() Wang Nan
2015-03-04 2:30 ` Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 28/34] ftrace: x86: get old instruction from early kprobes when make call Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 29/34] ftrace: x86: call kprobe_int3_handler() in ftrace int3 handler Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 30/34] early kprobes: convert early kprobes on ftrace to ftrace Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 31/34] early kprobes: enable early kprobes for x86 Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 32/34] early kprobes: enable 'ekprobe=' cmdline option for early kprobes Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 33/34] ftrace: enable make ftrace nop before ftrace_init() Wang Nan
2015-03-02 14:25 ` [RFC PATCH v4 34/34] early kprobes: enable optimization of kprobes on ftrace before ftrace is ready Wang Nan
2015-03-03 5:09 ` [PATCH 0/3] early kprobes: Fix bug in unregistering early kprobe before kprobe " Wang Nan
2015-03-03 5:09 ` [PATCH 1/3] early kprobes: make kprobes_on_ftrace_initialized public available Wang Nan
2015-03-03 5:09 ` [PATCH 2/3] ftrace/x86: don't return error if other makes a same code change Wang Nan
2015-03-03 5:09 ` [PATCH 3/3] early kprobes: x86: don't try to recover ftraced instruction before ftrace get ready Wang Nan
2015-03-03 17:06 ` Petr Mladek
2015-03-04 2:24 ` Wang Nan
2015-03-04 3:36 ` Masami Hiramatsu
2015-03-04 4:39 ` Wang Nan
2015-03-04 5:59 ` Masami Hiramatsu
2015-03-04 11:22 ` Wang Nan
2015-03-04 15:26 ` Masami Hiramatsu
2015-03-05 1:53 ` Wang Nan
2015-03-05 2:06 ` Wang Nan
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