Re: 3.10 xenU memleaks

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

On Fri, Feb 07, 2014 at 01:46:07PM +0100, William Dauchy wrote:
> Hello,
> 
> I am facing random memleaks with a xenU 3.10.x pv (x86_64);
> sometimes without issue and sometimes after a reboot, the
> kernel starts to memleak a lot until OOM.
> 
> config: hypervisor xen4.1, dom0 v3.4.x (x86_32)
> 
> I got no issue with a xenU v3.12.x pv; the only difference in dmesg was
> about APIC.
> 
> I manually backported the following patch:
> 6efa20e xen: Support 64-bit PV guest receiving NMIs
> --- a/arch/x86/xen/enlighten.c
> +++ b/arch/x86/xen/enlighten.c
> @@ -427,8 +427,7 @@ static void __init xen_init_cpuid_mask(void)
>  
>         if (!xen_initial_domain())
>                 cpuid_leaf1_edx_mask &=
> -                       ~((1 << X86_FEATURE_APIC) |  /* disable local APIC */
> -                         (1 << X86_FEATURE_ACPI));  /* disable ACPI */
> +                       ~((1 << X86_FEATURE_ACPI));  /* disable ACPI */
> 
> 
> and my issue is completely fixed. Should it backported for stable?

That does not make sense. What are the leaks? What are the messages
that you see about APIC?

> 
> Thanks,
> -- 
> William