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When handling a defered event, unmasking it isn't enouth, we also need to check 

if the corresponding bit needs to be set in evtchn_pending_sel, and eventually
force an upcall (if we got a second event when this one what being handled).
For now to this by calling hypervisor_enable_irq(), this could be rewritten
in inline assembly by someone knowing enouth about i386 assembly :)
This commit is contained in:
bouyer 2005-03-17 15:30:45 +00:00
parent 02e969d512
commit 3307398997
1 changed files with 11 additions and 1 deletions
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12
sys/arch/xen/i386/vector.S
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@ -1,4 +1,4 @@
/* $NetBSD: vector.S,v 1.6 2005/03/11 15:45:54 bouyer Exp $ */
/* $NetBSD: vector.S,v 1.7 2005/03/17 15:30:45 bouyer Exp $ */
/* NetBSD: 1.13 2004/03/11 11:39:26 yamt Exp */
/*
@ -334,6 +334,7 @@ IDTVEC(intr_/**/name/**/num) ;\
unmask(num) ;\
jmp 6b
#if 0
#ifdef DOM0OPS
#define hypervisor_asm_unmask(num) \
movl irq_to_evtchn + (num) * 4,%ecx ;\
@ -352,6 +353,15 @@ IDTVEC(intr_/**/name/**/num) ;\
lock ;\
btrl %ecx,EVENTS_MASK(%eax)
#endif
#else
# Just unmasking the event isn't enouth, we also need to
# reassert the event pending bit if needed. For now just call
# the C function doing it, maybe rewrite in inline assembly ?
#define hypervisor_asm_unmask(num) \
pushl $num ;\
call _C_LABEL(hypervisor_enable_irq) ;\
addl $4,%esp
#endif
XENINTRSTUB(xenev,0,voidop,voidop,voidop,hypervisor_asm_unmask,voidop)
XENINTRSTUB(xenev,1,voidop,voidop,voidop,hypervisor_asm_unmask,voidop)