From: "Chang S. Bae" <chang.seok.bae@intel.com>
To: bp@suse.de, tglx@linutronix.de, mingo@kernel.org,
luto@kernel.org, x86@kernel.org
Cc: len.brown@intel.com, dave.hansen@intel.com, hjl.tools@gmail.com,
Dave.Martin@arm.com, jannh@google.com, mpe@ellerman.id.au,
carlos@redhat.com, tony.luck@intel.com, ravi.v.shankar@intel.com,
libc-alpha@sourceware.org, linux-arch@vger.kernel.org,
linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
chang.seok.bae@intel.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 1/5] uapi: Move the aux vector AT_MINSIGSTKSZ define to uapi
Date: Wed, 3 Feb 2021 09:22:38 -0800 [thread overview]
Message-ID: <20210203172242.29644-2-chang.seok.bae@intel.com> (raw)
In-Reply-To: <20210203172242.29644-1-chang.seok.bae@intel.com>
Move the AT_MINSIGSTKSZ definition to generic Linux from arm64. It is
already used as generic ABI in glibc's generic elf.h, and this move will
prevent future namespace conflicts. In particular, x86 will re-use this
generic definition.
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Cc: Carlos O'Donell <carlos@redhat.com>
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: libc-alpha@sourceware.org
Cc: linux-arch@vger.kernel.org
Cc: linux-api@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
Change from v4:
* Added as a new patch (Carlos O'Donell)
---
arch/arm64/include/uapi/asm/auxvec.h | 1 -
include/uapi/linux/auxvec.h | 1 +
2 files changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/include/uapi/asm/auxvec.h b/arch/arm64/include/uapi/asm/auxvec.h
index 743c0b84fd30..767d710c92aa 100644
--- a/arch/arm64/include/uapi/asm/auxvec.h
+++ b/arch/arm64/include/uapi/asm/auxvec.h
@@ -19,7 +19,6 @@
/* vDSO location */
#define AT_SYSINFO_EHDR 33
-#define AT_MINSIGSTKSZ 51 /* stack needed for signal delivery */
#define AT_VECTOR_SIZE_ARCH 2 /* entries in ARCH_DLINFO */
diff --git a/include/uapi/linux/auxvec.h b/include/uapi/linux/auxvec.h
index abe5f2b6581b..cc4fa77bd2a7 100644
--- a/include/uapi/linux/auxvec.h
+++ b/include/uapi/linux/auxvec.h
@@ -33,5 +33,6 @@
#define AT_EXECFN 31 /* filename of program */
+#define AT_MINSIGSTKSZ 51 /* stack needed for signal delivery */
#endif /* _UAPI_LINUX_AUXVEC_H */
--
2.17.1
next prev parent reply other threads:[~2021-02-03 17:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-03 17:22 [PATCH v5 0/5] x86: Improve Minimum Alternate Stack Size Chang S. Bae
2021-02-03 17:22 ` Chang S. Bae [this message]
2021-02-04 15:55 ` [PATCH v5 1/5] uapi: Move the aux vector AT_MINSIGSTKSZ define to uapi Dave Martin
2021-02-12 18:46 ` Will Deacon
2021-02-03 17:22 ` [PATCH v5 2/5] x86/signal: Introduce helpers to get the maximum signal frame size Chang S. Bae
2021-02-03 17:22 ` [PATCH v5 3/5] x86/elf: Support a new ELF aux vector AT_MINSIGSTKSZ Chang S. Bae
2021-02-03 17:22 ` [PATCH v5 4/5] x86/signal: Detect and prevent an alternate signal stack overflow Chang S. Bae
2021-02-09 2:50 ` [x86/signal] dc8df6e85d: kernel-selftests.sigaltstack.sas.fail kernel test robot
2021-02-09 3:11 ` Bae, Chang Seok
2021-02-19 1:25 ` [PATCH v5 4/5] x86/signal: Detect and prevent an alternate signal stack overflow Andy Lutomirski
2021-02-03 17:22 ` [PATCH v5 5/5] selftest/x86/signal: Include test cases for validating sigaltstack Chang S. Bae
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