From c034637967881830979b5415e55578e42f806659 Mon Sep 17 00:00:00 2001 From: Russ Anderson Date: Thu, 14 Jun 2007 16:01:24 -0500 Subject: [PATCH] [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: Russ Anderson Signed-off-by: Tony Luck --- arch/ia64/sn/kernel/xp_nofault.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/ia64/sn/kernel/xp_nofault.S b/arch/ia64/sn/kernel/xp_nofault.S index b772543053..54e8973b6e 100644 --- a/arch/ia64/sn/kernel/xp_nofault.S +++ b/arch/ia64/sn/kernel/xp_nofault.S @@ -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 -- 2.39.5