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Add barriers to prevent scheduling of critical code outside of the 

SPL-protected region.
This commit is contained in:
rearnsha 2004-08-07 11:08:58 +00:00
parent 0163f96e43
commit 5b0328df32
1 changed files with 6 additions and 2 deletions
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8
sys/arch/evbarm/ifpga/ifpga_intr.h
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@ -1,4 +1,4 @@
/* $NetBSD: ifpga_intr.h,v 1.2 2003/09/21 19:33:13 matt Exp $ */
/* $NetBSD: ifpga_intr.h,v 1.3 2004/08/07 11:08:58 rearnsha Exp $ */
/*
* Copyright (c) 2001, 2002 Wasabi Systems, Inc.
@ -76,6 +76,8 @@ ifpga_splx(int new)
extern void ifpga_do_pending(void);
int oldirqstate, hwpend;
__insn_barrier();
oldirqstate = disable_interrupts(I32_bit);
current_spl_level = new;
@ -99,7 +101,9 @@ ifpga_splraise(int ipl)
int old;
old = current_spl_level;
current_spl_level |= ifpga_imask[ipl];
current_spl_level = old | ifpga_imask[ipl];
__insn_barrier();
return (old);
}