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Commit c0346379 authored by Russ Anderson's avatar Russ Anderson Committed by Tony Luck
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[IA64] Force error to surface in nofault code 



Montecito behaves slightly differently than previous processors,
resulting in the MCA due to a failed PIO read to sometimes surfacing
outside the nofault code.  Adding an additional or and stop bits
ensures the MCA surfaces in the nofault code.

Signed-off-by: default avatarRuss Anderson <rja@sgi.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent eaf6c766

arch/ia64/sn/kernel/xp_nofault.S

+2 −1
Original line number Diff line number Diff line
@@ -21,7 +21,8 @@ 
xp_nofault_PIOR:

	mov	r8=r0			// Stage a success return value

	ld8.acq	r9=[r32];;		// PIO Read the specified register

	adds	r9=1,r9			// Add to force a consume

	adds	r9=1,r9;;		// Add to force consumption

	or	r9=r9,r9;;		// Or to force consumption

	br.ret.sptk.many b0;;		// Return success



	.global xp_error_PIOR