From: Deepak Gupta <debug@rivosinc.com>
To: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org
Cc: Deepak Gupta <debug@rivosinc.com>
Subject: [PATCH v1 RFC Zisslpcfi 01/20] sslp stubs: shadow stack and landing pad stubs
Date: Sun, 12 Feb 2023 20:53:30 -0800 [thread overview]
Message-ID: <20230213045351.3945824-2-debug@rivosinc.com> (raw)
In-Reply-To: <20230213045351.3945824-1-debug@rivosinc.com>
In absence of shadow stack config and landing pad instr config, stubs are
needed to indicate whether shadow stack & landing pad instr is supported.
In absence of config, these stubs return false (indicating no support)
In presence of config, an extern declaration is added and arch specific
implementation can choose to implement detection.
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
---
include/linux/processor.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/include/linux/processor.h b/include/linux/processor.h
index dc78bdc7079a..228aa95a7cd7 100644
--- a/include/linux/processor.h
+++ b/include/linux/processor.h
@@ -59,4 +59,21 @@ do { \
#endif
+#ifndef CONFIG_USER_SHADOW_STACK
+static inline bool arch_supports_shadow_stack(void)
+{
+ return false;
+}
+#else
+extern bool arch_supports_shadow_stack(void);
+#endif
+
+#ifndef CONFIG_USER_INDIRECT_BR_LP
+static inline bool arch_supports_indirect_br_lp_instr(void)
+{
+ return false;
+}
+#else
+extern bool arch_supports_indirect_br_lp_instr(void);
+#endif
#endif /* _LINUX_PROCESSOR_H */
--
2.25.1
next prev parent reply other threads:[~2023-02-13 4:54 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-13 4:53 [PATCH v1 RFC Zisslpcfi 00/20] riscv control-flow integrity for U mode Deepak Gupta
2023-02-13 4:53 ` Deepak Gupta [this message]
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 02/20] riscv: zisslpcfi enumeration Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 03/20] riscv: zisslpcfi extension csr and bit definitions Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 04/20] riscv: kernel enabling user code for shadow stack and landing pad Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 05/20] mmap : Introducing new protection "PROT_SHADOWSTACK" for mmap Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 06/20] riscv: Implementing "PROT_SHADOWSTACK" on riscv Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 07/20] elf: ELF header parsing in GNU property for cfi state Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 08/20] riscv: ELF header parsing in GNU property for riscv zisslpcfi Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 09/20] riscv mmu: riscv shadow stack page fault handling Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 10/20] riscv mmu: write protect and shadow stack Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 11/20] mmu: maybe_mkwrite updated to manufacture shadow stack PTEs Deepak Gupta
2023-02-13 12:05 ` David Hildenbrand
2023-02-13 14:37 ` Deepak Gupta
2023-02-13 14:56 ` David Hildenbrand
2023-02-13 20:01 ` Deepak Gupta
2023-02-14 12:10 ` David Hildenbrand
2023-02-14 18:27 ` Edgecombe, Rick P
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 12/20] riscv mm: manufacture shadow stack pte and is vma shadowstack Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 13/20] riscv: illegal instruction handler for cfi violations Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 14/20] riscv: audit mode " Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 15/20] sslp prctl: arch-agnostic prctl for shadow stack and landing pad instr Deepak Gupta
2023-05-25 17:17 ` Mark Brown
2023-06-07 20:22 ` Mark Brown
2023-10-09 21:22 ` Deepak Gupta
2023-10-10 16:17 ` Mark Brown
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 16/20] riscv: Implements sslp prctls Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 17/20] riscv ucontext: adding shadow stack pointer field in ucontext Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 18/20] riscv signal: Save and restore of shadow stack for signal Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 19/20] config: adding two new config for control flow integrity Deepak Gupta
2023-02-13 4:53 ` [PATCH v1 RFC Zisslpcfi 20/20] riscv: select config for shadow stack and landing pad instr support Deepak Gupta
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