From: Kevin Hao <haokexin@gmail.com>
To: Kumar Gala <galak@kernel.crashing.org>,
Scott Wood <scottwood@freescale.com>
Cc: linuxppc <linuxppc-dev@lists.ozlabs.org>
Subject: [PATCH] powerpc/85xx: enable the math emulation for the corenet64_smp_defconfig
Date: Wed, 10 Jul 2013 09:49:52 +0800 [thread overview]
Message-ID: <1373420992-25167-1-git-send-email-haokexin@gmail.com> (raw)
I got the following error on my t4240qds board.
ntpd[2713]: unhandled signal 4 at 0fd5b448 nip 0fd5b448 lr 0fd5b424 code 30001
The root cause is that the float point instruction 'fsqrt' is used.
But this instruction is not implemented on e6500 core. Even this
does seem a gcc bug, I would like to enable the math emulation
in the kernel to workaround this kind of issue.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
---
arch/powerpc/configs/corenet64_smp_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/configs/corenet64_smp_defconfig b/arch/powerpc/configs/corenet64_smp_defconfig
index 6c8b020..b5408dc 100644
--- a/arch/powerpc/configs/corenet64_smp_defconfig
+++ b/arch/powerpc/configs/corenet64_smp_defconfig
@@ -27,6 +27,7 @@ CONFIG_P5040_DS=y
CONFIG_T4240_QDS=y
# CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
CONFIG_BINFMT_MISC=m
+CONFIG_MATH_EMULATION=y
CONFIG_FSL_IFC=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCI_MSI=y
--
1.8.1.4
next reply other threads:[~2013-07-10 1:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-10 1:49 Kevin Hao [this message]
2013-07-10 21:40 ` [PATCH] powerpc/85xx: enable the math emulation for the corenet64_smp_defconfig Scott Wood
2013-07-11 9:21 ` Kevin Hao
2013-07-11 10:04 ` David Laight
2013-07-11 10:14 ` Kevin Hao
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