From: "H. Peter Anvin" <hpa@zytor.com>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: 2.6.24 says "serial8250: too much work for irq4" a lot.
Date: Sat, 09 Feb 2008 13:36:05 -0800 [thread overview]
Message-ID: <47AE1CC5.10700@zytor.com> (raw)
In-Reply-To: <f43fc5580802090315u3561d9a5g428d8c9c05db74ce@mail.gmail.com>
Blue Swirl wrote:
>>
>> If you look at the patch, there are no timing dependencies; the only
>> parameter is the depth of the virtual queue. The exhaustion is
>> completely controlled by target OS access patterns.
>
> Thanks, this clarified the difference. But I'll rephrase my original comment:
>
> The patch looks OK, but the simulated FIFO exhaustion should benefit
> all devices, as
> discussed here:
> http://lists.gnu.org/archive/html/qemu-devel/2007-12/msg00283.html
The difference is you *can't* do that in a general layer.
-hpa
next prev parent reply other threads:[~2008-02-09 21:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200802051455.10831.rob@landley.net>
[not found] ` <47A8D00F.9040803@zytor.com>
2008-02-06 0:43 ` [Qemu-devel] Re: 2.6.24 says "serial8250: too much work for irq4" a lot Rob Landley
[not found] ` <200802071413.45085.rob@landley.net>
[not found] ` <47AB75EB.3040405@zytor.com>
2008-02-09 5:49 ` Rob Landley
2008-02-09 7:04 ` Blue Swirl
2008-02-09 7:12 ` H. Peter Anvin
2008-02-09 11:15 ` Blue Swirl
2008-02-09 21:36 ` H. Peter Anvin [this message]
2008-02-10 8:01 ` Blue Swirl
2008-02-10 11:26 ` Paul Brook
2008-03-11 23:51 ` Aurelien Jarno
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