Commit c1f5db1a authored by Ian Campbell's avatar Ian Campbell Committed by Konrad Rzeszutek Wilk
Browse files

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: default avatarIan Campbell <ian.campbell@citrix.com>
Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent d1b758eb
......@@ -1174,6 +1174,15 @@ asmlinkage void __init xen_start_kernel(void)
xen_smp_init();
#ifdef CONFIG_ACPI_NUMA
/*
* The pages we from Xen are not related to machine pages, so
* any NUMA information the kernel tries to get from ACPI will
* be meaningless. Prevent it from trying.
*/
acpi_numa = -1;
#endif
pgd = (pgd_t *)xen_start_info->pt_base;
if (!xen_initial_domain())
......
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