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 v9 1/6] uapi: Define the aux vector AT_MINSIGSTKSZ
Date: Tue, 18 May 2021 13:03:15 -0700 [thread overview]
Message-ID: <20210518200320.17239-2-chang.seok.bae@intel.com> (raw)
In-Reply-To: <20210518200320.17239-1-chang.seok.bae@intel.com>
Define the AT_MINSIGSTKSZ in generic Linux. It is already used as generic
ABI in glibc's generic elf.h, and this define will prevent future namespace
conflicts. In particular, x86 is also using 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 v6:
* Revised the comment. (Borislav Petkov)
Change from v5:
* Reverted the arm64 change. (Dave Martin and Will Deacon)
* Massaged the changelog.
Change from v4:
* Added as a new patch (Carlos O'Donell)
---
include/uapi/linux/auxvec.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/uapi/linux/auxvec.h b/include/uapi/linux/auxvec.h
index abe5f2b6581b..c7e502bf5a6f 100644
--- a/include/uapi/linux/auxvec.h
+++ b/include/uapi/linux/auxvec.h
@@ -33,5 +33,8 @@
#define AT_EXECFN 31 /* filename of program */
+#ifndef AT_MINSIGSTKSZ
+#define AT_MINSIGSTKSZ 51 /* minimal stack size for signal delivery */
+#endif
#endif /* _UAPI_LINUX_AUXVEC_H */
--
2.17.1
next prev parent reply other threads:[~2021-05-18 20:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-18 20:03 [PATCH v9 0/6] Improve Minimum Alternate Stack Size Chang S. Bae
2021-05-18 20:03 ` Chang S. Bae [this message]
2021-05-19 14:19 ` [tip: x86/fpu] uapi/auxvec: Define the aux vector AT_MINSIGSTKSZ tip-bot2 for Chang S. Bae
2021-05-18 20:03 ` [PATCH v9 2/6] x86/signal: Introduce helpers to get the maximum signal frame size Chang S. Bae
2021-05-19 14:19 ` [tip: x86/fpu] " tip-bot2 for Chang S. Bae
2021-05-18 20:03 ` [PATCH v9 3/6] x86/elf: Support a new ELF aux vector AT_MINSIGSTKSZ Chang S. Bae
2021-05-19 14:19 ` [tip: x86/fpu] " tip-bot2 for Chang S. Bae
2021-05-18 20:03 ` [PATCH v9 4/6] selftest/sigaltstack: Use the AT_MINSIGSTKSZ aux vector if available Chang S. Bae
2021-05-19 14:19 ` [tip: x86/fpu] " tip-bot2 for Chang S. Bae
2021-05-18 20:03 ` [PATCH v9 5/6] x86/signal: Detect and prevent an alternate signal stack overflow Chang S. Bae
2021-05-19 14:19 ` [tip: x86/fpu] " tip-bot2 for Chang S. Bae
2021-05-18 20:03 ` [PATCH v9 6/6] selftest/x86/signal: Include test cases for validating sigaltstack Chang S. Bae
2021-05-19 14:19 ` [tip: x86/fpu] " tip-bot2 for Chang S. Bae
2021-05-19 9:25 ` [PATCH v9 0/6] Improve Minimum Alternate Stack Size Thomas Gleixner
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