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Move a CLI() after .Lspllower_resume; because on Xen .Lspllower_resume

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may be called from Xdoreti via iret, so with interrupts enabled.
This commit is contained in:
bouyer 2008-01-09 23:45:34 +00:00
parent 829ba69fd1
commit 0b075efe67
1 changed files with 5 additions and 2 deletions
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7
sys/arch/xen/i386/spl.S
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@ -1,4 +1,4 @@
/* $NetBSD: spl.S,v 1.12 2007/10/18 15:28:39 yamt Exp $ */
/* $NetBSD: spl.S,v 1.13 2008/01/09 23:45:34 bouyer Exp $ */
/* NetBSD: spl.S,v 1.11 2004/02/20 17:35:01 yamt Exp */
/*
@ -107,8 +107,11 @@ IDTVEC(spllower)
#endif /* defined(DDB) || defined(GPROF) */
movl $.Lspllower_resume,%esi # address to resume loop at
1:
CLI(%eax)
# because of the way Xen interrupts works *%esi will in fact be called
# from Xdoreti via iret. So we have to always disable interrupts here
# for Xen
.Lspllower_resume:
CLI(%eax)
movl %ebx,%eax # get cpl
movl CPUVAR(IUNMASK)(,%eax,4),%eax
andl CPUVAR(IPENDING),%eax # any non-masked bits left?