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Re: [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris perfor
From: |
Artyom Tarasenko |
Subject: |
Re: [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix |
Date: |
Mon, 16 Nov 2009 23:44:07 +0100 |
2009/11/16 Jamie Lokier <address@hidden>:
> Artyom Tarasenko wrote:
>> I don't know, how the real sun4m reacts in the case where irq stays
>> on, not being cleared.
>> It can not be though that it would try to process irq for every next
>> tick. The CPU must have some time to clear the pending irq, so it must
>> be edge triggered too, at least in a way.
>
> In general, most CPUs have a "disable interrupts" flag which is set at
> the same time as calling the irq handler.
I see. The handler has enough time to clear pending irq then. Maybe
there is really no latch.
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, (continued)
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Blue Swirl, 2009/11/14
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Artyom Tarasenko, 2009/11/14
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Blue Swirl, 2009/11/15
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Artyom Tarasenko, 2009/11/16
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Blue Swirl, 2009/11/16
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Artyom Tarasenko, 2009/11/16
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Blue Swirl, 2009/11/16
- Re: [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Jamie Lokier, 2009/11/16
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Artyom Tarasenko, 2009/11/16
- Re: [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Jamie Lokier, 2009/11/16
- Re: [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix,
Artyom Tarasenko <=
- Re: [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Blue Swirl, 2009/11/17
- [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Artyom Tarasenko, 2009/11/16
- Re: [Qemu-devel] Re: [PATCH] sparc32 irq clearing (guest Solaris performance+NetBSD) fix, Jamie Lokier, 2009/11/16