Messages in this thread | | | Subject | Re: [PATCH] xen: fix the check of e_pfn in xen_find_pfn_range | From | Juergen Gross <> | Date | Wed, 2 Sep 2015 13:04:26 +0200 |
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On 09/02/2015 12:51 PM, Zhenzhong Duan wrote: > On some numa system, after dom0 up, we see below warning even if there are > enough pfn ranges could be used for remapping. > "Unable to find available pfn range, not remapping identity pages" > > Fix it to avoid getting a memory region of zero size in xen_find_pfn_range. > > Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
> --- > arch/x86/xen/setup.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c > index a3a7546..c11f6b2 100644 > --- a/arch/x86/xen/setup.c > +++ b/arch/x86/xen/setup.c > @@ -178,7 +178,7 @@ static unsigned long __init xen_find_pfn_range( > e_pfn = PFN_DOWN(entry->addr + entry->size); > > /* We only care about E820 after this */ > - if (e_pfn < *min_pfn) > + if (e_pfn <= *min_pfn) > continue; > > s_pfn = PFN_UP(entry->addr);
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