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Re: [Xen-devel] Re: [Xen-changelog] Indirect hypercalls through ahyperca

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-changelog] Indirect hypercalls through ahypercall transfer page.
From: Ulrich Drepper <drepper@xxxxxxxxxx>
Date: Wed, 08 Feb 2006 17:15:17 -0800
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Ian Pratt wrote:

> The vsyscall
> page lives within the fixaddr region, and its virtual address needs to
> be known at *compile* time as it gets built into various elf objects.

That's not necessarily the case.

The FC x86 kernel has random vdso address support.  I don't know why
this isn't also enabled for x86-64 but there is no real reason for that.
   These are, after all, DSOs which need little fixup for a new location.

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖

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