Re: [Xen-devel] [PATCH] x86/xen: Warn when there's no mfn for pfn

2015-04-02 Thread Ross Lagerwall
On 04/02/2015 10:00 AM, David Vrabel wrote: On 02/04/15 08:28, Ross Lagerwall wrote: I recently had to debug dom0 taking a fatal page fault and it would have been useful if it warned when creating a non-present pte if there's no mfn for a pfn. This will trigger for ever PTE covering memory hot

Re: [Xen-devel] [PATCH] x86/xen: Warn when there's no mfn for pfn

2015-04-02 Thread David Vrabel
On 02/04/15 08:28, Ross Lagerwall wrote: > I recently had to debug dom0 taking a fatal page fault and it would have > been useful if it warned when creating a non-present pte if there's no > mfn for a pfn. This will trigger for ever PTE covering memory hotplugged by the balloon driver, so I don't

[Xen-devel] [PATCH] x86/xen: Warn when there's no mfn for pfn

2015-04-02 Thread Ross Lagerwall
I recently had to debug dom0 taking a fatal page fault and it would have been useful if it warned when creating a non-present pte if there's no mfn for a pfn. Signed-off-by: Ross Lagerwall --- arch/x86/xen/mmu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xe