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Re: [Qemu-devel] [PATCH v4 18/29] hostmem: add file-based HostMemoryBack


From: Hu Tao
Subject: Re: [Qemu-devel] [PATCH v4 18/29] hostmem: add file-based HostMemoryBackend
Date: Tue, 10 Jun 2014 16:30:06 +0800
User-agent: Mutt/1.5.21 (2010-09-15)

On Tue, Jun 10, 2014 at 01:09:32AM -0400, Paolo Bonzini wrote:
> 
> > > > +#define TYPE_MEMORY_BACKEND_FILE "memory-backend-file"
> > > how about naming it after what it really is? "memory-backend-hugepage"
> > > Later we could split it into generic superclass mmap-ed
> > > "memory-backend-file" and have TPH specific code moved into this backend.
> > 
> > OK.
> 
> Actually I don't think there's anything hugepage-specific in this backend
> (except perhaps passing a path instead of a filename).  It could be used
> with a tmpfs backing storage like /dev/shm.

What's the point compared to memory-backend-ram?

Igor suggested memory-backend-file be compiled only for Linux. Does this mean
memory-backend-file shuold be compiled also for systems supporting tmpfs
or like?

Regards,
Hu



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