x86, UV: Fix NMI handler for UV platforms

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This fixes problems seen on UV systems handling NMIs from the
node controller.

I isolated the "dazed..." messages that I saw earlier to a bug in
the BMC on our platform. It was sending NMIs w/o properly setting
a register that indicated the source of NMI.

So rather than _assuming_ any unhandled NMI came from the UV system
maintenance console (SMC), add a check to verify that the SMC actually
sent the NMI.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: gorcunov@gmail.com
Cc: dzickus@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

This commit is contained in:

Jack Steiner 2011-05-09 11:35:19 -05:00 • committed by Ingo Molnar

parent 693d92a1bb

commit 1d44e8288a

3 changed files with 60 additions and 6 deletions

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2

arch/x86/include/asm/uv/uv_hub.h

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16

arch/x86/include/asm/uv/uv_mmrs.h

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48

arch/x86/kernel/apic/x2apic_uv_x.c

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