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xen-devel
Re: [Xen-devel] [PATCH] don't use mlock() with Solaris tools
On Fri, Oct 20, 2006 at 04:42:47AM +0100, John Levon wrote:
> on solaris: mlock requires a page aligned address and mlock doesn't ensure
> the pages won't minor page fault; so don't use it on solaris.
[...]
> -/* NB: arr must be mlock'ed */
> +int lock_pages(void *addr, size_t len)
> +{
> + int e = 0;
> +#ifndef __sun__
> + e = mlock(addr, len);
> +#endif
> + return (e);
> +}
> +
> +void unlock_pages(void *addr, size_t len)
> +{
> +#ifndef __sun__
> + safe_munlock(addr, len);
> +#endif
> +}
> +
So on Solaris you don't pin down the memory used for hypercall parameters
and results at all ? Is there really no risk associated with this strategy ?
surprised,
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
veillard@xxxxxxxxxx | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/
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