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Re: [Xen-devel] Size limit on extra argument to xm create
| To: | "Mick.Jordan@xxxxxxx" <Mick.Jordan@xxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Size limit on extra argument to xm create |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Fri, 09 Oct 2009 21:31:19 +0100 |
| Cc: | |
| Delivery-date: | Fri, 09 Oct 2009 13:31:47 -0700 |
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| Thread-topic: | [Xen-devel] Size limit on extra argument to xm create |
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On 09/10/2009 20:57, "Mick Jordan" <Mick.Jordan@xxxxxxx> wrote: >> Before I dig in to the code, I'm thought I'd check if this a limit in >> xm or a more fundamental limit in the Xen guest interface. I can >> imagine a hard limit of a page in the latter case, but that would be a >> lot better than 1024. > I was too hasty in attributing this to problems with shell variable > length limits. There does seem to be a Xen limit of 1024 characters for > the "extra" argument to "xm create", as shown below. The cmd_line value > passed to the guest is truncated at 1024. So my question above holds. xen/include/public/xen.h:MAX_GUEST_CMDLINE should answer your question. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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