> Subject: Re: [Xen-devel] pv-grub heap exhausted?
>
> > From: Samuel Thibault [mailto:samuel.thibault@xxxxxxxxxxxx]
> > Could you send us the log?
>
> Oops sorry, it was in. Could you try the patch below?
>
> Samuel
>
>
> minios: Fix 18874 memory clipping
>
> Fix 18874's memory clipping: there are three page-sized holes between
> direct mapping, demand mapping, heap pages and the end of memory.
>
> Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
>
> diff -r f8187a343ad2 extras/mini-os/arch/x86/mm.c
> --- a/extras/mini-os/arch/x86/mm.c Fri Feb 20 17:02:36 2009 +0000
> +++ b/extras/mini-os/arch/x86/mm.c Sat Mar 07 02:33:30 2009 +0100
> @@ -599,7 +599,7 @@
> void arch_init_mm(unsigned long* start_pfn_p, unsigned long*
> max_pfn_p)
> {
>
> - unsigned long start_pfn, max_pfn, virt_pfns;
> + unsigned long start_pfn, max_pfn;
>
> printk(" _text: %p\n", &_text);
> printk(" _etext: %p\n", &_etext);
> @@ -614,9 +614,13 @@
> max_pfn = start_info.nr_pages;
>
> /* We need room for demand mapping and heap, clip available memory
> */
> - virt_pfns = DEMAND_MAP_PAGES + HEAP_PAGES;
> - if (max_pfn + virt_pfns + 1 < max_pfn)
> - max_pfn = -(virt_pfns + 1);
> +#if defined(__i386__)
> + {
> + unsigned long virt_pfns = 1 + DEMAND_MAP_PAGES + 1 +
> HEAP_PAGES;
> + if (max_pfn + virt_pfns >= 0x100000)
> + max_pfn = 0x100000 - virt_pfns - 1;
> + }
> +#endif
>
> printk(" start_pfn: %lx\n", start_pfn);
> printk(" max_pfn: %lx\n", max_pfn);
Yes, works now. Many thanks.
Anna
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