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From: madvenka@linux.microsoft.com
To: jpoimboe@redhat.com, peterz@infradead.org,
	chenzhongjin@huawei.com, mark.rutland@arm.com,
	broonie@kernel.org, nobuta.keiya@fujitsu.com,
	sjitindarsingh@gmail.com, catalin.marinas@arm.com,
	will@kernel.org, jamorris@linux.microsoft.com,
	linux-arm-kernel@lists.infradead.org,
	live-patching@vger.kernel.org, linux-kernel@vger.kernel.org,
	madvenka@linux.microsoft.com
Subject: [RFC PATCH v2 01/20] objtool: Reorganize CFI code
Date: Mon, 23 May 2022 19:16:18 -0500	[thread overview]
Message-ID: <20220524001637.1707472-2-madvenka@linux.microsoft.com> (raw)
In-Reply-To: <20220524001637.1707472-1-madvenka@linux.microsoft.com>

From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com>

check.c implements static stack validation. But the CFI code that it
contains can be shared with other types of validation. E.g., dynamic FP
validation. Move the CFI code to its own files - cfi.h and cfi.c.

Signed-off-by: Madhavan T. Venkataraman <madvenka@linux.microsoft.com>
---
 tools/objtool/Build                 |   2 +
 tools/objtool/cfi.c                 | 108 ++++++++++++++++++++++++++++
 tools/objtool/check.c               |  96 -------------------------
 tools/objtool/include/objtool/cfi.h |  12 ++++
 4 files changed, 122 insertions(+), 96 deletions(-)
 create mode 100644 tools/objtool/cfi.c

diff --git a/tools/objtool/Build b/tools/objtool/Build
index b7222d5cc7bc..695cfee5cfde 100644
--- a/tools/objtool/Build
+++ b/tools/objtool/Build
@@ -3,8 +3,10 @@ objtool-y += arch/$(SRCARCH)/
 objtool-y += weak.o
 
 objtool-$(SUBCMD_CHECK) += check.o
+objtool-$(SUBCMD_CHECK) += cfi.o
 objtool-$(SUBCMD_CHECK) += special.o
 objtool-$(SUBCMD_ORC) += check.o
+objtool-$(SUBCMD_ORC) += cfi.o
 objtool-$(SUBCMD_ORC) += orc_gen.o
 objtool-$(SUBCMD_ORC) += orc_dump.o
 
diff --git a/tools/objtool/cfi.c b/tools/objtool/cfi.c
new file mode 100644
index 000000000000..d5de6df59d72
--- /dev/null
+++ b/tools/objtool/cfi.c
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#include <stdlib.h>
+#include <sys/mman.h>
+
+#include <objtool/cfi.h>
+#include <objtool/builtin.h>
+#include <objtool/warn.h>
+
+unsigned long nr_cfi, nr_cfi_reused, nr_cfi_cache;
+
+struct cfi_init_state initial_func_cfi;
+struct cfi_state init_cfi;
+struct cfi_state func_cfi;
+
+void init_cfi_state(struct cfi_state *cfi)
+{
+	int i;
+
+	for (i = 0; i < CFI_NUM_REGS; i++) {
+		cfi->regs[i].base = CFI_UNDEFINED;
+		cfi->vals[i].base = CFI_UNDEFINED;
+	}
+	cfi->cfa.base = CFI_UNDEFINED;
+	cfi->drap_reg = CFI_UNDEFINED;
+	cfi->drap_offset = -1;
+}
+
+static struct cfi_state *cfi_alloc(void)
+{
+	struct cfi_state *cfi = calloc(sizeof(struct cfi_state), 1);
+
+	if (!cfi) {
+		WARN("calloc failed");
+		exit(1);
+	}
+	nr_cfi++;
+	return cfi;
+}
+
+static int cfi_bits;
+static struct hlist_head *cfi_hash;
+
+bool cficmp(struct cfi_state *cfi1, struct cfi_state *cfi2)
+{
+	return memcmp((void *)cfi1 + sizeof(cfi1->hash),
+		      (void *)cfi2 + sizeof(cfi2->hash),
+		      sizeof(struct cfi_state) - sizeof(struct hlist_node));
+}
+
+static inline u32 cfi_key(struct cfi_state *cfi)
+{
+	return jhash((void *)cfi + sizeof(cfi->hash),
+		     sizeof(*cfi) - sizeof(cfi->hash), 0);
+}
+
+struct cfi_state *cfi_hash_find_or_add(struct cfi_state *cfi)
+{
+	struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)];
+	struct cfi_state *obj;
+
+	hlist_for_each_entry(obj, head, hash) {
+		if (!cficmp(cfi, obj)) {
+			nr_cfi_cache++;
+			return obj;
+		}
+	}
+
+	obj = cfi_alloc();
+	*obj = *cfi;
+	hlist_add_head(&obj->hash, head);
+
+	return obj;
+}
+
+void cfi_hash_add(struct cfi_state *cfi)
+{
+	struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)];
+
+	hlist_add_head(&cfi->hash, head);
+}
+
+void *cfi_hash_alloc(unsigned long size)
+{
+	cfi_bits = max(10, ilog2(size));
+	cfi_hash = mmap(NULL, sizeof(struct hlist_head) << cfi_bits,
+			PROT_READ|PROT_WRITE,
+			MAP_PRIVATE|MAP_ANON, -1, 0);
+	if (cfi_hash == (void *)-1L) {
+		WARN("mmap fail cfi_hash");
+		cfi_hash = NULL;
+	}  else if (stats) {
+		printf("cfi_bits: %d\n", cfi_bits);
+	}
+
+	return cfi_hash;
+}
+
+void set_func_state(struct cfi_state *state)
+{
+	state->cfa = initial_func_cfi.cfa;
+	memcpy(&state->regs, &initial_func_cfi.regs,
+	       CFI_NUM_REGS * sizeof(struct cfi_reg));
+	state->stack_size = initial_func_cfi.cfa.offset;
+}
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 6de5085e3e5a..12acc9d329de 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -27,12 +27,6 @@ struct alternative {
 	bool skip_orig;
 };
 
-static unsigned long nr_cfi, nr_cfi_reused, nr_cfi_cache;
-
-static struct cfi_init_state initial_func_cfi;
-static struct cfi_state init_cfi;
-static struct cfi_state func_cfi;
-
 struct instruction *find_insn(struct objtool_file *file,
 			      struct section *sec, unsigned long offset)
 {
@@ -249,19 +243,6 @@ static bool dead_end_function(struct objtool_file *file, struct symbol *func)
 	return __dead_end_function(file, func, 0);
 }
 
-static void init_cfi_state(struct cfi_state *cfi)
-{
-	int i;
-
-	for (i = 0; i < CFI_NUM_REGS; i++) {
-		cfi->regs[i].base = CFI_UNDEFINED;
-		cfi->vals[i].base = CFI_UNDEFINED;
-	}
-	cfi->cfa.base = CFI_UNDEFINED;
-	cfi->drap_reg = CFI_UNDEFINED;
-	cfi->drap_offset = -1;
-}
-
 static void init_insn_state(struct insn_state *state, struct section *sec)
 {
 	memset(state, 0, sizeof(*state));
@@ -276,75 +257,6 @@ static void init_insn_state(struct insn_state *state, struct section *sec)
 		state->noinstr = sec->noinstr;
 }
 
-static struct cfi_state *cfi_alloc(void)
-{
-	struct cfi_state *cfi = calloc(sizeof(struct cfi_state), 1);
-	if (!cfi) {
-		WARN("calloc failed");
-		exit(1);
-	}
-	nr_cfi++;
-	return cfi;
-}
-
-static int cfi_bits;
-static struct hlist_head *cfi_hash;
-
-static inline bool cficmp(struct cfi_state *cfi1, struct cfi_state *cfi2)
-{
-	return memcmp((void *)cfi1 + sizeof(cfi1->hash),
-		      (void *)cfi2 + sizeof(cfi2->hash),
-		      sizeof(struct cfi_state) - sizeof(struct hlist_node));
-}
-
-static inline u32 cfi_key(struct cfi_state *cfi)
-{
-	return jhash((void *)cfi + sizeof(cfi->hash),
-		     sizeof(*cfi) - sizeof(cfi->hash), 0);
-}
-
-static struct cfi_state *cfi_hash_find_or_add(struct cfi_state *cfi)
-{
-	struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)];
-	struct cfi_state *obj;
-
-	hlist_for_each_entry(obj, head, hash) {
-		if (!cficmp(cfi, obj)) {
-			nr_cfi_cache++;
-			return obj;
-		}
-	}
-
-	obj = cfi_alloc();
-	*obj = *cfi;
-	hlist_add_head(&obj->hash, head);
-
-	return obj;
-}
-
-static void cfi_hash_add(struct cfi_state *cfi)
-{
-	struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)];
-
-	hlist_add_head(&cfi->hash, head);
-}
-
-static void *cfi_hash_alloc(unsigned long size)
-{
-	cfi_bits = max(10, ilog2(size));
-	cfi_hash = mmap(NULL, sizeof(struct hlist_head) << cfi_bits,
-			PROT_READ|PROT_WRITE,
-			MAP_PRIVATE|MAP_ANON, -1, 0);
-	if (cfi_hash == (void *)-1L) {
-		WARN("mmap fail cfi_hash");
-		cfi_hash = NULL;
-	}  else if (stats) {
-		printf("cfi_bits: %d\n", cfi_bits);
-	}
-
-	return cfi_hash;
-}
-
 static unsigned long nr_insns;
 static unsigned long nr_insns_visited;
 
@@ -1866,14 +1778,6 @@ static int add_jump_table_alts(struct objtool_file *file)
 	return 0;
 }
 
-static void set_func_state(struct cfi_state *state)
-{
-	state->cfa = initial_func_cfi.cfa;
-	memcpy(&state->regs, &initial_func_cfi.regs,
-	       CFI_NUM_REGS * sizeof(struct cfi_reg));
-	state->stack_size = initial_func_cfi.cfa.offset;
-}
-
 static int read_unwind_hints(struct objtool_file *file)
 {
 	struct cfi_state cfi = init_cfi;
diff --git a/tools/objtool/include/objtool/cfi.h b/tools/objtool/include/objtool/cfi.h
index f11d1ac1dadf..7d54f1058655 100644
--- a/tools/objtool/include/objtool/cfi.h
+++ b/tools/objtool/include/objtool/cfi.h
@@ -37,4 +37,16 @@ struct cfi_state {
 	bool end;
 };
 
+void init_cfi_state(struct cfi_state *cfi);
+struct cfi_state *cfi_hash_find_or_add(struct cfi_state *cfi);
+void cfi_hash_add(struct cfi_state *cfi);
+void *cfi_hash_alloc(unsigned long size);
+bool cficmp(struct cfi_state *cfi1, struct cfi_state *cfi2);
+void set_func_state(struct cfi_state *state);
+
+extern unsigned long nr_cfi, nr_cfi_reused, nr_cfi_cache;
+extern struct cfi_init_state initial_func_cfi;
+extern struct cfi_state init_cfi;
+extern struct cfi_state func_cfi;
+
 #endif /* _OBJTOOL_CFI_H */
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: madvenka@linux.microsoft.com
To: jpoimboe@redhat.com, peterz@infradead.org,
	chenzhongjin@huawei.com, mark.rutland@arm.com,
	broonie@kernel.org, nobuta.keiya@fujitsu.com,
	sjitindarsingh@gmail.com, catalin.marinas@arm.com,
	will@kernel.org, jamorris@linux.microsoft.com,
	linux-arm-kernel@lists.infradead.org,
	live-patching@vger.kernel.org, linux-kernel@vger.kernel.org,
	madvenka@linux.microsoft.com
Subject: [RFC PATCH v2 01/20] objtool: Reorganize CFI code
Date: Mon, 23 May 2022 19:16:18 -0500	[thread overview]
Message-ID: <20220524001637.1707472-2-madvenka@linux.microsoft.com> (raw)
In-Reply-To: <20220524001637.1707472-1-madvenka@linux.microsoft.com>

From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com>

check.c implements static stack validation. But the CFI code that it
contains can be shared with other types of validation. E.g., dynamic FP
validation. Move the CFI code to its own files - cfi.h and cfi.c.

Signed-off-by: Madhavan T. Venkataraman <madvenka@linux.microsoft.com>
---
 tools/objtool/Build                 |   2 +
 tools/objtool/cfi.c                 | 108 ++++++++++++++++++++++++++++
 tools/objtool/check.c               |  96 -------------------------
 tools/objtool/include/objtool/cfi.h |  12 ++++
 4 files changed, 122 insertions(+), 96 deletions(-)
 create mode 100644 tools/objtool/cfi.c

diff --git a/tools/objtool/Build b/tools/objtool/Build
index b7222d5cc7bc..695cfee5cfde 100644
--- a/tools/objtool/Build
+++ b/tools/objtool/Build
@@ -3,8 +3,10 @@ objtool-y += arch/$(SRCARCH)/
 objtool-y += weak.o
 
 objtool-$(SUBCMD_CHECK) += check.o
+objtool-$(SUBCMD_CHECK) += cfi.o
 objtool-$(SUBCMD_CHECK) += special.o
 objtool-$(SUBCMD_ORC) += check.o
+objtool-$(SUBCMD_ORC) += cfi.o
 objtool-$(SUBCMD_ORC) += orc_gen.o
 objtool-$(SUBCMD_ORC) += orc_dump.o
 
diff --git a/tools/objtool/cfi.c b/tools/objtool/cfi.c
new file mode 100644
index 000000000000..d5de6df59d72
--- /dev/null
+++ b/tools/objtool/cfi.c
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com>
+ */
+
+#include <stdlib.h>
+#include <sys/mman.h>
+
+#include <objtool/cfi.h>
+#include <objtool/builtin.h>
+#include <objtool/warn.h>
+
+unsigned long nr_cfi, nr_cfi_reused, nr_cfi_cache;
+
+struct cfi_init_state initial_func_cfi;
+struct cfi_state init_cfi;
+struct cfi_state func_cfi;
+
+void init_cfi_state(struct cfi_state *cfi)
+{
+	int i;
+
+	for (i = 0; i < CFI_NUM_REGS; i++) {
+		cfi->regs[i].base = CFI_UNDEFINED;
+		cfi->vals[i].base = CFI_UNDEFINED;
+	}
+	cfi->cfa.base = CFI_UNDEFINED;
+	cfi->drap_reg = CFI_UNDEFINED;
+	cfi->drap_offset = -1;
+}
+
+static struct cfi_state *cfi_alloc(void)
+{
+	struct cfi_state *cfi = calloc(sizeof(struct cfi_state), 1);
+
+	if (!cfi) {
+		WARN("calloc failed");
+		exit(1);
+	}
+	nr_cfi++;
+	return cfi;
+}
+
+static int cfi_bits;
+static struct hlist_head *cfi_hash;
+
+bool cficmp(struct cfi_state *cfi1, struct cfi_state *cfi2)
+{
+	return memcmp((void *)cfi1 + sizeof(cfi1->hash),
+		      (void *)cfi2 + sizeof(cfi2->hash),
+		      sizeof(struct cfi_state) - sizeof(struct hlist_node));
+}
+
+static inline u32 cfi_key(struct cfi_state *cfi)
+{
+	return jhash((void *)cfi + sizeof(cfi->hash),
+		     sizeof(*cfi) - sizeof(cfi->hash), 0);
+}
+
+struct cfi_state *cfi_hash_find_or_add(struct cfi_state *cfi)
+{
+	struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)];
+	struct cfi_state *obj;
+
+	hlist_for_each_entry(obj, head, hash) {
+		if (!cficmp(cfi, obj)) {
+			nr_cfi_cache++;
+			return obj;
+		}
+	}
+
+	obj = cfi_alloc();
+	*obj = *cfi;
+	hlist_add_head(&obj->hash, head);
+
+	return obj;
+}
+
+void cfi_hash_add(struct cfi_state *cfi)
+{
+	struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)];
+
+	hlist_add_head(&cfi->hash, head);
+}
+
+void *cfi_hash_alloc(unsigned long size)
+{
+	cfi_bits = max(10, ilog2(size));
+	cfi_hash = mmap(NULL, sizeof(struct hlist_head) << cfi_bits,
+			PROT_READ|PROT_WRITE,
+			MAP_PRIVATE|MAP_ANON, -1, 0);
+	if (cfi_hash == (void *)-1L) {
+		WARN("mmap fail cfi_hash");
+		cfi_hash = NULL;
+	}  else if (stats) {
+		printf("cfi_bits: %d\n", cfi_bits);
+	}
+
+	return cfi_hash;
+}
+
+void set_func_state(struct cfi_state *state)
+{
+	state->cfa = initial_func_cfi.cfa;
+	memcpy(&state->regs, &initial_func_cfi.regs,
+	       CFI_NUM_REGS * sizeof(struct cfi_reg));
+	state->stack_size = initial_func_cfi.cfa.offset;
+}
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 6de5085e3e5a..12acc9d329de 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -27,12 +27,6 @@ struct alternative {
 	bool skip_orig;
 };
 
-static unsigned long nr_cfi, nr_cfi_reused, nr_cfi_cache;
-
-static struct cfi_init_state initial_func_cfi;
-static struct cfi_state init_cfi;
-static struct cfi_state func_cfi;
-
 struct instruction *find_insn(struct objtool_file *file,
 			      struct section *sec, unsigned long offset)
 {
@@ -249,19 +243,6 @@ static bool dead_end_function(struct objtool_file *file, struct symbol *func)
 	return __dead_end_function(file, func, 0);
 }
 
-static void init_cfi_state(struct cfi_state *cfi)
-{
-	int i;
-
-	for (i = 0; i < CFI_NUM_REGS; i++) {
-		cfi->regs[i].base = CFI_UNDEFINED;
-		cfi->vals[i].base = CFI_UNDEFINED;
-	}
-	cfi->cfa.base = CFI_UNDEFINED;
-	cfi->drap_reg = CFI_UNDEFINED;
-	cfi->drap_offset = -1;
-}
-
 static void init_insn_state(struct insn_state *state, struct section *sec)
 {
 	memset(state, 0, sizeof(*state));
@@ -276,75 +257,6 @@ static void init_insn_state(struct insn_state *state, struct section *sec)
 		state->noinstr = sec->noinstr;
 }
 
-static struct cfi_state *cfi_alloc(void)
-{
-	struct cfi_state *cfi = calloc(sizeof(struct cfi_state), 1);
-	if (!cfi) {
-		WARN("calloc failed");
-		exit(1);
-	}
-	nr_cfi++;
-	return cfi;
-}
-
-static int cfi_bits;
-static struct hlist_head *cfi_hash;
-
-static inline bool cficmp(struct cfi_state *cfi1, struct cfi_state *cfi2)
-{
-	return memcmp((void *)cfi1 + sizeof(cfi1->hash),
-		      (void *)cfi2 + sizeof(cfi2->hash),
-		      sizeof(struct cfi_state) - sizeof(struct hlist_node));
-}
-
-static inline u32 cfi_key(struct cfi_state *cfi)
-{
-	return jhash((void *)cfi + sizeof(cfi->hash),
-		     sizeof(*cfi) - sizeof(cfi->hash), 0);
-}
-
-static struct cfi_state *cfi_hash_find_or_add(struct cfi_state *cfi)
-{
-	struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)];
-	struct cfi_state *obj;
-
-	hlist_for_each_entry(obj, head, hash) {
-		if (!cficmp(cfi, obj)) {
-			nr_cfi_cache++;
-			return obj;
-		}
-	}
-
-	obj = cfi_alloc();
-	*obj = *cfi;
-	hlist_add_head(&obj->hash, head);
-
-	return obj;
-}
-
-static void cfi_hash_add(struct cfi_state *cfi)
-{
-	struct hlist_head *head = &cfi_hash[hash_min(cfi_key(cfi), cfi_bits)];
-
-	hlist_add_head(&cfi->hash, head);
-}
-
-static void *cfi_hash_alloc(unsigned long size)
-{
-	cfi_bits = max(10, ilog2(size));
-	cfi_hash = mmap(NULL, sizeof(struct hlist_head) << cfi_bits,
-			PROT_READ|PROT_WRITE,
-			MAP_PRIVATE|MAP_ANON, -1, 0);
-	if (cfi_hash == (void *)-1L) {
-		WARN("mmap fail cfi_hash");
-		cfi_hash = NULL;
-	}  else if (stats) {
-		printf("cfi_bits: %d\n", cfi_bits);
-	}
-
-	return cfi_hash;
-}
-
 static unsigned long nr_insns;
 static unsigned long nr_insns_visited;
 
@@ -1866,14 +1778,6 @@ static int add_jump_table_alts(struct objtool_file *file)
 	return 0;
 }
 
-static void set_func_state(struct cfi_state *state)
-{
-	state->cfa = initial_func_cfi.cfa;
-	memcpy(&state->regs, &initial_func_cfi.regs,
-	       CFI_NUM_REGS * sizeof(struct cfi_reg));
-	state->stack_size = initial_func_cfi.cfa.offset;
-}
-
 static int read_unwind_hints(struct objtool_file *file)
 {
 	struct cfi_state cfi = init_cfi;
diff --git a/tools/objtool/include/objtool/cfi.h b/tools/objtool/include/objtool/cfi.h
index f11d1ac1dadf..7d54f1058655 100644
--- a/tools/objtool/include/objtool/cfi.h
+++ b/tools/objtool/include/objtool/cfi.h
@@ -37,4 +37,16 @@ struct cfi_state {
 	bool end;
 };
 
+void init_cfi_state(struct cfi_state *cfi);
+struct cfi_state *cfi_hash_find_or_add(struct cfi_state *cfi);
+void cfi_hash_add(struct cfi_state *cfi);
+void *cfi_hash_alloc(unsigned long size);
+bool cficmp(struct cfi_state *cfi1, struct cfi_state *cfi2);
+void set_func_state(struct cfi_state *state);
+
+extern unsigned long nr_cfi, nr_cfi_reused, nr_cfi_cache;
+extern struct cfi_init_state initial_func_cfi;
+extern struct cfi_state init_cfi;
+extern struct cfi_state func_cfi;
+
 #endif /* _OBJTOOL_CFI_H */
-- 
2.25.1


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2022-05-24  0:16 ` [RFC PATCH v2 00/20] arm64: livepatch: Use ORC for dynamic frame pointer validation madvenka
2022-05-24  0:16   ` madvenka
2022-05-24  0:16   ` madvenka [this message]
2022-05-24  0:16     ` [RFC PATCH v2 01/20] objtool: Reorganize CFI code madvenka
2022-05-24  0:16   ` [RFC PATCH v2 02/20] objtool: Reorganize instruction-related code madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 03/20] objtool: Move decode_instructions() to a separate file madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 04/20] objtool: Reorganize Unwind hint code madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 05/20] objtool: Reorganize ORC types madvenka
2022-05-24  0:16     ` madvenka
2022-05-24 14:27     ` Chen Zhongjin
2022-05-24 14:27       ` Chen Zhongjin
2022-05-29 15:36       ` Madhavan T. Venkataraman
2022-05-29 15:36         ` Madhavan T. Venkataraman
2022-05-24  0:16   ` [RFC PATCH v2 06/20] objtool: Reorganize ORC code madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 07/20] objtool: Reorganize ORC kernel code madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 08/20] objtool: arm64: Implement decoder for FP validation madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 09/20] objtool: arm64: Implement command to invoke the decoder madvenka
2022-05-24  0:16     ` madvenka
2022-05-24 14:09     ` Mark Brown
2022-05-24 14:09       ` Mark Brown
2022-05-29 14:49       ` Madhavan T. Venkataraman
2022-05-29 14:49         ` Madhavan T. Venkataraman
2022-05-30  7:51         ` Peter Zijlstra
2022-05-30  7:51           ` Peter Zijlstra
2022-06-01 22:45           ` Madhavan T. Venkataraman
2022-06-01 22:45             ` Madhavan T. Venkataraman
2022-06-07 18:13             ` Madhavan T. Venkataraman
2022-06-07 18:13               ` Madhavan T. Venkataraman
2022-05-24  0:16   ` [RFC PATCH v2 10/20] objtool: arm64: Compute destinations for call and jump instructions madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 11/20] objtool: arm64: Walk instructions and compute CFI for each instruction madvenka
2022-05-24  0:16     ` madvenka
2022-05-24 13:45     ` Chen Zhongjin
2022-05-24 13:45       ` Chen Zhongjin
2022-05-29 15:18       ` Madhavan T. Venkataraman
2022-05-29 15:18         ` Madhavan T. Venkataraman
2022-05-30  1:44         ` Chen Zhongjin
2022-05-30  1:44           ` Chen Zhongjin
2022-05-24  0:16   ` [RFC PATCH v2 12/20] objtool: arm64: Generate ORC data from CFI for object files madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 13/20] objtool: arm64: Dump ORC data present in " madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 14/20] objtool: arm64: Add unwind hint support madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 15/20] arm64: Add unwind hints to specific points in code madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 16/20] arm64: Add kernel and module support for ORC madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 17/20] arm64: Build the kernel with ORC information madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 18/20] arm64: unwinder: Add a reliability check in the unwinder based on ORC madvenka
2022-05-24  0:16     ` madvenka
2022-05-24  0:16   ` [RFC PATCH v2 19/20] arm64: Miscellaneous changes required for enabling livepatch madvenka
2022-05-24  0:16     ` madvenka
2022-07-01 14:16     ` Miroslav Benes
2022-07-01 14:16       ` Miroslav Benes
2022-07-01 19:53       ` Madhavan T. Venkataraman
2022-07-01 19:53         ` Madhavan T. Venkataraman
2022-05-24  0:16   ` [RFC PATCH v2 20/20] arm64: Enable livepatch for ARM64 madvenka
2022-05-24  0:16     ` madvenka
2022-05-24 14:24   ` [RFC PATCH v2 00/20] arm64: livepatch: Use ORC for dynamic frame pointer validation Chen Zhongjin
2022-05-24 14:24     ` Chen Zhongjin
2022-05-29 15:30     ` Madhavan T. Venkataraman
2022-05-29 15:30       ` Madhavan T. Venkataraman
2022-06-15 12:18   ` Ivan T. Ivanov
2022-06-15 12:18     ` Ivan T. Ivanov
2022-06-15 13:37     ` Mark Rutland
2022-06-15 13:37       ` Mark Rutland
2022-06-15 14:18       ` Ivan T. Ivanov
2022-06-15 14:18         ` Ivan T. Ivanov
2022-06-15 20:50       ` Madhavan T. Venkataraman
2022-06-15 20:50         ` Madhavan T. Venkataraman
2022-06-15 20:47     ` Madhavan T. Venkataraman
2022-06-15 20:47       ` Madhavan T. Venkataraman

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