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When a vSMP Foundation box is detected, the function apic_cluster_num() counts the number of APIC clusters found. If more than one found, a multi board configuration is assumed, and TSC marked as unstable. This behavior is incorrect as vSMP Foundation may use processors from single node only, attached to memory of other nodes - and such node may have more than one APIC cluster (typically any recent intel box has more than single APIC_CLUSTERID(x)). To fix this, we simply remove the code which detects a vSMP Foundation box and affects apic_is_clusted_box() return value. This can be done because later the kernel checks by itself if the TSC is stable using the check_tsc_sync_[source|target]() functions and marks TSC as unstable if needed. Acked-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Oren Twaig <oren@scalemp.com> Link: http://lkml.kernel.org/r/1404036068-11674-1-git-send-email-oren@scalemp.com Signed-off-by: H. Peter Anvin <hpa@zytor.com> |
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| .. | ||
| apic_flat_64.c | ||
| apic_noop.c | ||
| apic_numachip.c | ||
| apic.c | ||
| bigsmp_32.c | ||
| hw_nmi.c | ||
| io_apic.c | ||
| ipi.c | ||
| Makefile | ||
| probe_32.c | ||
| probe_64.c | ||
| x2apic_cluster.c | ||
| x2apic_phys.c | ||
| x2apic_uv_x.c | ||