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Date: Thu, 3 Dec 2020 09:22:52 -0600 From: Mike Travis <mike.travis@....com> To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, Hans de Goede <hdegoede@...hat.com>, Steve Wahl <steve.wahl@....com>, x86@...nel.org Cc: Mike Travis <mike.travis@....com>, Dimitri Sivanich <dimitri.sivanich@....com>, Russ Anderson <russ.anderson@....com>, "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org Subject: [PATCH] Fix UV4 Hub Revision adjustment Fix UV4 Hub Revision adjustment as Hub chip starts with revision 1. Incorrectly identifies UV4 as UV4A and UV4A as UV5. Fixes 647128f1536ef: x86/platform/uv: Update UV MMRs for UV5 Signed-off-by: Mike Travis <mike.travis@....com> Acked-by: Dimitri Sivanich <dimitri.sivanich@....com> --- arch/x86/kernel/apic/x2apic_uv_x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 1b98f8c12b96..235f5cde06fc 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -161,7 +161,7 @@ static int __init early_set_hub_type(void) /* UV4/4A only have a revision difference */ case UV4_HUB_PART_NUMBER: uv_min_hub_revision_id = node_id.s.revision - + UV4_HUB_REVISION_BASE; + + UV4_HUB_REVISION_BASE - 1; uv_hub_type_set(UV4); if (uv_min_hub_revision_id == UV4A_HUB_REVISION_BASE) uv_hub_type_set(UV4|UV4A); -- 2.21.0
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