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Re: [Xen-devel] Re: [PATCH] make ballooning up to maxmem work
| To: | Glauber de Oliveira Costa <gcosta@xxxxxxxxxx>, Rik van Riel <riel@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Re: [PATCH] make ballooning up to maxmem work |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Wed, 22 Nov 2006 11:18:39 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 22 Nov 2006 03:18:51 -0800 |
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| Thread-topic: | [Xen-devel] Re: [PATCH] make ballooning up to maxmem work |
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On 22/11/06 10:40, "Glauber de Oliveira Costa" <gcosta@xxxxxxxxxx> wrote: >> case XENMEM_current_reservation: >> case XENMEM_maximum_reservation: >> + case XENMEM_maximum_memory: >> if ( copy_from_guest(&domid, arg, 1) ) >> return -EFAULT; > > This still makes use of d->max_pages in return. Isn't it supposed to > change in the future too? IIRC, according to Keir, max_pages will track > the _current_ number of pages, differing from tot_pages only in a brief > timeframe in which you balloon, but tot_pages was not yet updated. This adds a level of indirection at least, but really we may as well implement the XENMEM_memory_map hypercall. Then there is no guest modification required. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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