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From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-mm@kvack.org, linux-arch@vger.kernel.org,
	linux-api@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Andy Lutomirski <luto@kernel.org>,
	Balbir Singh <bsingharora@gmail.com>,
	Borislav Petkov <bp@alien8.de>,
	Cyrill Gorcunov <gorcunov@gmail.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Eugene Syromiatnikov <esyr@redhat.com>,
	Florian Weimer <fweimer@redhat.com>,
	"H.J. Lu" <hjl.tools@gmail.com>, Jann Horn <jannh@google.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Kees Cook <keescook@chromium.org>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Nadav Amit <nadav.amit@gmail.com>,
	Oleg Nesterov <oleg@redhat.com>, Pavel Machek <pavel@ucw.cz>,
	Peter Zijlstra <peterz@infradead.org>,
	Randy Dunlap <rdunlap@infradead.org>,
	"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
	Vedvyas Shanbhogue <vedvyas.shanbhogue@intel.com>,
	Dave Martin <Dave.Martin@arm.com>,
	x86-patch-review@intel.com
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [RFC PATCH v9 4/7] x86/cet/ibt: ELF header parsing for Indirect Branch Tracking
Date: Wed,  5 Feb 2020 10:23:05 -0800	[thread overview]
Message-ID: <20200205182308.4028-5-yu-cheng.yu@intel.com> (raw)
In-Reply-To: <20200205182308.4028-1-yu-cheng.yu@intel.com>

Update arch_setup_elf_property() for Indirect Branch Tracking.

v9:
- Change cpu_feature_enabled() to static_cpu_has().

Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
---
 arch/x86/Kconfig             | 2 ++
 arch/x86/kernel/process_64.c | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 563f3c81f323..5c260c047e3c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2003,6 +2003,8 @@ config X86_INTEL_BRANCH_TRACKING_USER
 	def_bool n
 	depends on CPU_SUP_INTEL && X86_64
 	select X86_INTEL_CET
+	select ARCH_USE_GNU_PROPERTY
+	select ARCH_BINFMT_ELF_STATE
 	---help---
 	  Indirect Branch Tracking (IBT) provides protection against
 	  CALL-/JMP-oriented programming attacks.  It is active when
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 99548cde0cc6..9f81b413d975 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -760,6 +760,11 @@ int arch_setup_elf_property(struct arch_elf_state *state)
 			return r;
 	}
 
+	if (static_cpu_has(X86_FEATURE_IBT)) {
+		if (state->gnu_property & GNU_PROPERTY_X86_FEATURE_1_IBT)
+			r = cet_setup_ibt();
+	}
+
 	return r;
 }
 #endif
-- 
2.21.0


WARNING: multiple messages have this Message-ID (diff)
From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-mm@kvack.org, linux-arch@vger.kernel.org,
	linux-api@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Andy Lutomirski <luto@kernel.org>,
	Balbir Singh <bsingharora@gmail.com>,
	Borislav Petkov <bp@alien8.de>,
	Cyrill Gorcunov <gorcunov@gmail.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Eugene Syromiatnikov <esyr@redhat.com>,
	Florian Weimer <fweimer@redhat.com>,
	"H.J. Lu" <hjl.tools@gmail.com>, Jann Horn <jannh@google.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Kees Cook <keescook@chromium.org>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Nadav Amit <nadav.amit@gmail.com>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [RFC PATCH v9 4/7] x86/cet/ibt: ELF header parsing for Indirect Branch Tracking
Date: Wed,  5 Feb 2020 10:23:05 -0800	[thread overview]
Message-ID: <20200205182308.4028-5-yu-cheng.yu@intel.com> (raw)
In-Reply-To: <20200205182308.4028-1-yu-cheng.yu@intel.com>

Update arch_setup_elf_property() for Indirect Branch Tracking.

v9:
- Change cpu_feature_enabled() to static_cpu_has().

Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
---
 arch/x86/Kconfig             | 2 ++
 arch/x86/kernel/process_64.c | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 563f3c81f323..5c260c047e3c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2003,6 +2003,8 @@ config X86_INTEL_BRANCH_TRACKING_USER
 	def_bool n
 	depends on CPU_SUP_INTEL && X86_64
 	select X86_INTEL_CET
+	select ARCH_USE_GNU_PROPERTY
+	select ARCH_BINFMT_ELF_STATE
 	---help---
 	  Indirect Branch Tracking (IBT) provides protection against
 	  CALL-/JMP-oriented programming attacks.  It is active when
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 99548cde0cc6..9f81b413d975 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -760,6 +760,11 @@ int arch_setup_elf_property(struct arch_elf_state *state)
 			return r;
 	}
 
+	if (static_cpu_has(X86_FEATURE_IBT)) {
+		if (state->gnu_property & GNU_PROPERTY_X86_FEATURE_1_IBT)
+			r = cet_setup_ibt();
+	}
+
 	return r;
 }
 #endif
-- 
2.21.0

WARNING: multiple messages have this Message-ID (diff)
From: Yu-cheng Yu <yu-cheng.yu@intel.com>
To: x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-mm@kvack.org, linux-arch@vger.kernel.org,
	linux-api@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Andy Lutomirski <luto@kernel.org>,
	Balbir Singh <bsingharora@gmail.com>,
	Borislav Petkov <bp@alien8.de>,
	Cyrill Gorcunov <gorcunov@gmail.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Eugene Syromiatnikov <esyr@redhat.com>,
	Florian Weimer <fweimer@redhat.com>,
	"H.J. Lu" <hjl.tools@gmail.com>, Jann Horn <jannh@google.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Kees Cook <keescook@chromium.org>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Nadav Amit <nadav.amit@gmail.com>,
	Oleg Nesterov <oleg@redhat.com>, Pavel Machek <pavel@ucw.cz>,
	Peter Zijlstra <peterz@infradead.org>,
	Randy Dunlap <rdunlap@infradead.org>,
	"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
	Vedvyas Shanbhogue <vedvyas.shanbhogue@intel.com>,
	Dave Martin <Dave.Martin@arm.com>,
	x86-patch-review@intel.com
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [RFC PATCH v9 4/7] x86/cet/ibt: ELF header parsing for Indirect Branch Tracking
Date: Wed,  5 Feb 2020 10:23:05 -0800	[thread overview]
Message-ID: <20200205182308.4028-5-yu-cheng.yu@intel.com> (raw)
Message-ID: <20200205182305.T6UlO-ctOQDH8UXsKH3-ldOKOVkfF9sSidDtXPgfGA0@z> (raw)
In-Reply-To: <20200205182308.4028-1-yu-cheng.yu@intel.com>

Update arch_setup_elf_property() for Indirect Branch Tracking.

v9:
- Change cpu_feature_enabled() to static_cpu_has().

Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
---
 arch/x86/Kconfig             | 2 ++
 arch/x86/kernel/process_64.c | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 563f3c81f323..5c260c047e3c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2003,6 +2003,8 @@ config X86_INTEL_BRANCH_TRACKING_USER
 	def_bool n
 	depends on CPU_SUP_INTEL && X86_64
 	select X86_INTEL_CET
+	select ARCH_USE_GNU_PROPERTY
+	select ARCH_BINFMT_ELF_STATE
 	---help---
 	  Indirect Branch Tracking (IBT) provides protection against
 	  CALL-/JMP-oriented programming attacks.  It is active when
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 99548cde0cc6..9f81b413d975 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -760,6 +760,11 @@ int arch_setup_elf_property(struct arch_elf_state *state)
 			return r;
 	}

+	if (static_cpu_has(X86_FEATURE_IBT)) {
+		if (state->gnu_property & GNU_PROPERTY_X86_FEATURE_1_IBT)
+			r = cet_setup_ibt();
+	}
+
 	return r;
 }
 #endif
-- 
2.21.0

  parent reply	other threads:[~2020-02-05 18:23 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-05 18:23 [RFC PATCH v9 0/7] Control-flow Enforcement: Indirect Branch Tracking Yu-cheng Yu
2020-02-05 18:23 ` Yu-cheng Yu
2020-02-05 18:23 ` [RFC PATCH v9 1/7] x86/cet/ibt: Add Kconfig option for user-mode " Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23 ` [RFC PATCH v9 2/7] x86/cet/ibt: User-mode Indirect Branch Tracking support Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23 ` [RFC PATCH v9 3/7] x86/cet/ibt: Handle signals for Indirect Branch Tracking Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23 ` Yu-cheng Yu [this message]
2020-02-05 18:23   ` [RFC PATCH v9 4/7] x86/cet/ibt: ELF header parsing " Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23 ` [RFC PATCH v9 5/7] x86/cet/ibt: Add arch_prctl functions " Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23 ` [RFC PATCH v9 6/7] mm: Update alloc_set_pte() for zero page Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23 ` [RFC PATCH v9 7/7] x86/cet/ibt: Introduce arch_prctl(ARCH_X86_CET_MARK_LEGACY_CODE) Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu
2020-02-05 18:23   ` Yu-cheng Yu

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