xen: disable ACPI NUMA for PV guests
Xen does not currently expose PV-NUMA information to PV guests. Therefore disable NUMA for the time being to prevent the kernel picking up on an host-level NUMA information which it might come across in the firmware. [ Added comment - Jeremy ] Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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@ -1174,6 +1174,15 @@ asmlinkage void __init xen_start_kernel(void)
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xen_smp_init();
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#ifdef CONFIG_ACPI_NUMA
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/*
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* The pages we from Xen are not related to machine pages, so
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* any NUMA information the kernel tries to get from ACPI will
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* be meaningless. Prevent it from trying.
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*/
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acpi_numa = -1;
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#endif
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pgd = (pgd_t *)xen_start_info->pt_base;
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if (!xen_initial_domain())
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