[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: [patch 7/8] Add a bootparameter to reserve high linear address space.
On Wed, 02 Aug 2006 17:25:17 -0700 Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx> wrote: > + /* > + * reservetop=size reserves a hole at the top of the kernel > + * address space which a hypervisor can load into later. > + * Needed for dynamically loaded hypervisors, so relocating > + * the fixmap can be done before paging initialization. > + * This hole must be a multiple of 4M. > + */ > + else if (!memcmp(from, "reservetop=", 11)) { > + unsigned long reserve = memparse(from+11, &from); > + reserve &= ~0x3fffff; > + reserve_top_address(reserve); > + } I assume that this argument will normally be passed in via the hypervisor rather than by human-entered information? In which case, perhaps a panic would be a more appropriate response to a non-multiple-of-4M. Either way, rounding the number down rather than up seems wrong... _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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