Re: [Xen-devel] [PATCH] Balloon driver crash

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Tue, Jun 08, 2010 at 10:25:35AM +0100, M A Young wrote:
> This patch fixes an error in commit f4685d0ed041523d1bd5124c5872459681aca876
> "Add hugepage support to balloon driver" that was causing the balloon  
> driver to crash when shrinking the memory used by Domain-0.
>

Should this be applied to both xen/stable-2.6.31.x and xen/stable-2.6.32.x ? 

-- Pasi

> Signed-off-by: Michael Young <m.a.young@xxxxxxxxxxxx>
>
> --- linux-2.6.32.x86_64/drivers/xen/balloon.c.orig    2010-06-05 
> 22:43:11.000000000 +0100
> +++ linux-2.6.32.x86_64/drivers/xen/balloon.c 2010-06-05 22:47:03.000000000 
> +0100
> @@ -340,7 +340,7 @@
>                               discontig_free = 1;
>
>                       set_phys_to_machine(lpfn, INVALID_P2M_ENTRY);
> -                     if (!PageHighMem(page)) {
> +                     if (!PageHighMem(pfn_to_page(lpfn))) {
>                               ret = HYPERVISOR_update_va_mapping(
>                                       (unsigned long)__va(lpfn << PAGE_SHIFT),
>                                       __pte_ma(0), 0);
>
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