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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>,
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	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>,
	Weijiang Yang <weijiang.yang@intel.com>,
	Pengfei Xu <pengfei.xu@intel.com>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Subject: [PATCH v13 22/26] binfmt_elf: Define GNU_PROPERTY_X86_FEATURE_1_AND properties
Date: Fri, 25 Sep 2020 07:56:45 -0700	[thread overview]
Message-ID: <20200925145649.5438-23-yu-cheng.yu@intel.com> (raw)
In-Reply-To: <20200925145649.5438-1-yu-cheng.yu@intel.com>

An ELF file's .note.gnu.property indicates architecture features of the
file.. Introduce feature definitions for Shadow Stack and Indirect Branch
Tracking.

Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
---
 include/uapi/linux/elf.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index 22220945a5fd..ca5875f384f6 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -454,4 +454,13 @@ typedef struct elf64_note {
 /* Bits for GNU_PROPERTY_AARCH64_FEATURE_1_BTI */
 #define GNU_PROPERTY_AARCH64_FEATURE_1_BTI	(1U << 0)
 
+/* .note.gnu.property types for x86: */
+#define GNU_PROPERTY_X86_FEATURE_1_AND		0xc0000002
+
+/* Bits for GNU_PROPERTY_X86_FEATURE_1_AND */
+#define GNU_PROPERTY_X86_FEATURE_1_IBT		0x00000001
+#define GNU_PROPERTY_X86_FEATURE_1_SHSTK	0x00000002
+#define GNU_PROPERTY_X86_FEATURE_1_INVAL ~(GNU_PROPERTY_X86_FEATURE_1_IBT | \
+					    GNU_PROPERTY_X86_FEATURE_1_SHSTK)
+
 #endif /* _UAPI_LINUX_ELF_H */
-- 
2.21.0


  parent reply	other threads:[~2020-09-25 15:11 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-25 14:56 [PATCH v13 00/26] Control-flow Enforcement: Shadow Stack Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 01/26] Documentation/x86: Add CET description Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 02/26] x86/cpufeatures: Add CET CPU feature flags for Control-flow Enforcement Technology (CET) Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 03/26] x86/fpu/xstate: Introduce CET MSR XSAVES supervisor states Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 04/26] x86/cet: Add control-protection fault handler Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 05/26] x86/cet/shstk: Add Kconfig option for user-mode Shadow Stack Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 06/26] x86/mm: Change _PAGE_DIRTY to _PAGE_DIRTY_HW Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 07/26] x86/mm: Remove _PAGE_DIRTY_HW from kernel RO pages Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 08/26] x86/mm: Introduce _PAGE_COW Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 09/26] drm/i915/gvt: Change _PAGE_DIRTY to _PAGE_DIRTY_BITS Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 10/26] x86/mm: Update pte_modify for _PAGE_COW Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 11/26] x86/mm: Update ptep_set_wrprotect() and pmdp_set_wrprotect() for transition from _PAGE_DIRTY_HW to _PAGE_COW Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 12/26] mm: Introduce VM_SHSTK for shadow stack memory Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 13/26] x86/mm: Shadow Stack page fault error checking Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 14/26] x86/mm: Update maybe_mkwrite() for shadow stack Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 15/26] mm: Fixup places that call pte_mkwrite() directly Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 16/26] mm: Add guard pages around a shadow stack Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 17/26] mm/mmap: Add shadow stack pages to memory accounting Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 18/26] mm: Update can_follow_write_pte() for shadow stack Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 19/26] mm: Re-introduce do_mmap_pgoff() Yu-cheng Yu
2020-10-02  2:06   ` Peter Collingbourne
2020-10-02  2:06     ` Peter Collingbourne
2020-10-02 15:58     ` Yu, Yu-cheng
2020-10-02 22:52       ` Peter Collingbourne
2020-10-02 22:52         ` Peter Collingbourne
2020-10-02 22:57         ` Yu, Yu-cheng
2020-09-25 14:56 ` [PATCH v13 20/26] x86/cet/shstk: User-mode shadow stack support Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 21/26] x86/cet/shstk: Handle signals for shadow stack Yu-cheng Yu
2020-09-25 14:56 ` Yu-cheng Yu [this message]
2020-09-25 14:56 ` [PATCH v13 23/26] ELF: Introduce arch_setup_elf_property() Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 24/26] x86/cet/shstk: Handle thread shadow stack Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 25/26] x86/cet/shstk: Add arch_prctl functions for " Yu-cheng Yu
2020-09-25 14:56 ` [PATCH v13 26/26] mm: Introduce PROT_SHSTK " Yu-cheng Yu

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