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From: Matthew Hall <mhall@mhcomputing.net>
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Date: Sun, 28 Jun 2015 10:59:53 -0700
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Subject: Re: [dpdk-dev] RTM instruction compile failure for XABORT when AVX
is active
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It would appear there is some bug in the new lock elision patches that =
is preventing it from compiling with clang. Any suggestions?
On Jun 28, 2015, at 10:16 AM, Matthew Hall <mhall@mhcomputing.net> =
wrote:
> Hi all,
>=20
> I am getting a strange error compiling some RTM instructions when I =
upgraded my VM environment from VirtualBox 4 to VirtualBox 5 and AVX =
instructions from the host CPU became available. However when I am =
reading the opcode description for XABORT it supposedly allows an =
immediate operand for the argument so I can't understand why this code =
would not compile. Any advice?
>=20
> CC test_hash_scaling.o
> In file included from =
/vagrant/external/dpdk/app/test/test_hash_scaling.c:37:
> In file included from =
/vagrant/external/dpdk/build/include/rte_spinlock.h:42:
> /vagrant/external/dpdk/build/include/rte_rtm.h:56:15: error: invalid =
operand for inline asm constraint 'i'
> asm volatile(".byte 0xc6,0xf8,%P0" :: "i" (status) : "memory");
>=20
> Matthew.