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Date: Fri, 13 Jun 2014 11:48:11 +0200
From: Olivier MATZ <olivier.matz@6wind.com>
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Subject: Re: [Qemu-devel] Why I advise against using ivshmem
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To: Vincent JARDIN <vincent.jardin@6wind.com>, Markus Armbruster <armbru@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>
Cc: Henning Schild <henning.schild@siemens.com>, kvm@vger.kernel.org, qemu-devel@nongnu.org, David Marchand <david.marchand@6wind.com>, virtualization@lists.linux-foundation.org, "thomas.monjalon@6wind.com" <thomas.monjalon@6wind.com>

Hello,

On 06/13/2014 11:26 AM, Vincent JARDIN wrote:
> ivhsmem does not require hugetlbfs. It is optional.
>
>  > * it doesn't require ivshmem (it does require shared memory, which
>  > will also be added to 2.1)

Right, hugetlbfs is not required. A posix shared memory or tmpfs
can be used instead. For instance, to use /dev/shm/foobar:

   qemu-system-x86_64 -enable-kvm -cpu host [...] \
      -device ivshmem,size=16,shm=foobar


Regards,
Olivier