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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH v4 18/29] hostmem: add file-based HostMemoryBackend |
Date: | Tue, 10 Jun 2014 10:56:42 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 |
Il 10/06/2014 10:30, Hu Tao ha scritto:
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?
That you can use shared memory, for example together with vhost-user.
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?
Yes, I think it should be compiled on all POSIX systems. But it can be done later.
Paolo
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