From: ard.biesheuvel@linaro.org (Ard Biesheuvel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/5] arm64: add AT_HWCAP2 support for 32-bit compat
Date: Mon, 23 Dec 2013 15:06:30 +0100 [thread overview]
Message-ID: <1387807592-26375-4-git-send-email-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <1387807592-26375-1-git-send-email-ard.biesheuvel@linaro.org>
Add support for the ELF auxv entry AT_HWCAP2 when running 32-bit
ELF binaries in compat mode.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
arch/arm64/include/asm/hwcap.h | 3 ++-
arch/arm64/kernel/setup.c | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h
index 6cddbb0..9a4cbd6 100644
--- a/arch/arm64/include/asm/hwcap.h
+++ b/arch/arm64/include/asm/hwcap.h
@@ -41,7 +41,8 @@
#ifdef CONFIG_COMPAT
#define COMPAT_ELF_HWCAP (compat_elf_hwcap)
-extern unsigned int compat_elf_hwcap;
+#define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2)
+extern unsigned int compat_elf_hwcap, compat_elf_hwcap2;
#endif
extern unsigned long elf_hwcap;
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index bb33fff..15f3bd2 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -69,6 +69,7 @@ EXPORT_SYMBOL_GPL(elf_hwcap);
COMPAT_HWCAP_VFPv3|COMPAT_HWCAP_VFPv4|\
COMPAT_HWCAP_NEON|COMPAT_HWCAP_IDIV)
unsigned int compat_elf_hwcap __read_mostly = COMPAT_ELF_HWCAP_DEFAULT;
+unsigned int compat_elf_hwcap2 __read_mostly;
#endif
static const char *cpu_name;
--
1.8.3.2
next prev parent reply other threads:[~2013-12-23 14:06 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-23 14:06 [PATCH v2 0/5] arm64: advertise availability of CRC and crypto instructions Ard Biesheuvel
2013-12-23 14:06 ` [PATCH v2 1/5] ARM: add support for AT_HWCAP2 ELF auxv entry Ard Biesheuvel
2014-01-20 17:39 ` Catalin Marinas
2013-12-23 14:06 ` [PATCH v2 2/5] binfmt_elf: add ELF_HWCAP2 to compat auxv entries Ard Biesheuvel
2014-01-20 17:40 ` Catalin Marinas
2014-02-05 14:08 ` Ard Biesheuvel
2013-12-23 14:06 ` Ard Biesheuvel [this message]
2013-12-23 14:06 ` [PATCH v2 4/5] ARM: introduce HWCAP2 feature bits for ARMv8 Crypto Extensions Ard Biesheuvel
2014-01-20 17:41 ` Catalin Marinas
2013-12-23 14:06 ` [PATCH v2 5/5] arm64: advertise ARMv8 extensions to 32-bit compat ELF binaries Ard Biesheuvel
2014-01-20 17:43 ` Catalin Marinas
2014-01-07 9:22 ` [PATCH v2 0/5] arm64: advertise availability of CRC and crypto instructions Ard Biesheuvel
2014-01-20 17:38 ` Catalin Marinas
2014-01-20 17:44 ` Nicolas Pitre
2014-01-20 18:03 ` Ard Biesheuvel
2014-01-20 18:17 ` Nicolas Pitre
2014-01-20 18:32 ` Ard Biesheuvel
2014-01-20 18:55 ` Nicolas Pitre
2014-01-20 19:01 ` Ard Biesheuvel
2014-01-20 19:42 ` Nicolas Pitre
2014-01-21 15:12 ` Catalin Marinas
2014-01-21 8:55 ` Ard Biesheuvel
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