lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 22 Aug 2012 16:29:38 +0200 From: Arnd Bergmann <arnd@...db.de> To: Russell King <rmk+kernel@....linux.org.uk> Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>, Will Deacon <will.deacon@....com> Subject: [PATCH 2/4] ARM: allow PID_IN_CONTEXTIDR only for ARMv7 When ARMv6 is enabled, we build the kernel with -march=armv6 or -march=armv6k, which means the bfi instruction is not available. Instead, it only works with -march=armv6t2 or -march=armv7-a. Without this patch, building rand-enIHAOL results in: /tmp/ccwCsCXC.s: Assembler messages: /tmp/ccwCsCXC.s:49: Error: selected processor does not support ARM mode `bfi r3,r2,#0,#8' Signed-off-by: Arnd Bergmann <arnd@...db.de> Cc: Will Deacon <will.deacon@....com> Cc: Russell King <rmk+kernel@....linux.org.uk> --- arch/arm/Kconfig.debug | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index f15f82b..11b9ff4 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -398,6 +398,7 @@ config ARM_KPROBES_TEST config PID_IN_CONTEXTIDR bool "Write the current PID to the CONTEXTIDR register" depends on CPU_COPY_V6 + depends on CPU_V7 && !CPU_V6 help Enabling this option causes the kernel to write the current PID to the PROCID field of the CONTEXTIDR register, at the expense of some -- 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists