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Re: [net-next:master 488/665] verifier.c:undefined reference to `__multi3'
- From: Jim Wilson <jimw at sifive dot com>
- To: Fengguang Wu <fengguang dot wu at intel dot com>, GCC Development <gcc at gcc dot gnu dot org>
- Cc: Alexei Starovoitov <ast at fb dot com>, netdev at vger dot kernel dot org, kbuild-all at 01 dot org
- Date: Mon, 13 Nov 2017 21:14:15 -0800
- Subject: Re: [net-next:master 488/665] verifier.c:undefined reference to `__multi3'
- Authentication-results: sourceware.org; auth=none
- References: <20171112013345.6gfkq4xuaxdoxa2k@wfg-t540p.sh.intel.com>
On 11/11/2017 05:33 PM, Fengguang Wu wrote:
CC gcc list. According to Alexei:
This is a known issue with gcc 7 on mips that is "optimizing"
normal 64-bit multiply into 128-bit variant.
Nothing to fix on the kernel side.
I filed a bug report. This is now
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82981
I found a helpful thread at
https://www.linux-mips.org/archives/linux-mips/2017-08/msg00041.html
that had enough info for me to reproduce and file the bug report.
Jim