From: Michael Tokarev <mjt@tls.msk.ru>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: KVM list <kvm@vger.kernel.org>, qemu-devel <qemu-devel@nongnu.org>
Subject: Re: >2 serial ports?
Date: Wed, 17 Mar 2010 13:33:56 +0300 [thread overview]
Message-ID: <4BA0B014.5020307@msgid.tls.msk.ru> (raw)
In-Reply-To: <4BA09E41.7000300@redhat.com>
Gerd Hoffmann wrote:
> On 03/17/10 09:38, Michael Tokarev wrote:
>> Since 0.12, it appears that kvm does not allow more than
>> 2 serial ports for a guest:
>>
>> $ kvm \
>> -serial unix:s1,server,nowait \
>> -serial unix:s2,server,nowait \
>> -serial unix:s3,server,nowait
>> isa irq 4 already assigned
>>
>> Is there a work-around for this?
>
> Oh, well, yes, I remember. qemu is more strict on ISA irq sharing now.
> A bit too strict.
>
> /me goes dig out a old patch which never made it upstream for some
> reason I forgot. Attached.
I tried the patch, and it now appears to work. I did not try
to run various stress tests so far, but basic tests are fine.
Thank you Gerd! And I think it's time to push it finally :)
/mjt
WARNING: multiple messages have this Message-ID (diff)
From: Michael Tokarev <mjt@tls.msk.ru>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>, KVM list <kvm@vger.kernel.org>
Subject: [Qemu-devel] Re: >2 serial ports?
Date: Wed, 17 Mar 2010 13:33:56 +0300 [thread overview]
Message-ID: <4BA0B014.5020307@msgid.tls.msk.ru> (raw)
In-Reply-To: <4BA09E41.7000300@redhat.com>
Gerd Hoffmann wrote:
> On 03/17/10 09:38, Michael Tokarev wrote:
>> Since 0.12, it appears that kvm does not allow more than
>> 2 serial ports for a guest:
>>
>> $ kvm \
>> -serial unix:s1,server,nowait \
>> -serial unix:s2,server,nowait \
>> -serial unix:s3,server,nowait
>> isa irq 4 already assigned
>>
>> Is there a work-around for this?
>
> Oh, well, yes, I remember. qemu is more strict on ISA irq sharing now.
> A bit too strict.
>
> /me goes dig out a old patch which never made it upstream for some
> reason I forgot. Attached.
I tried the patch, and it now appears to work. I did not try
to run various stress tests so far, but basic tests are fine.
Thank you Gerd! And I think it's time to push it finally :)
/mjt
next prev parent reply other threads:[~2010-03-17 10:33 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-17 8:38 >2 serial ports? Michael Tokarev
2010-03-17 9:17 ` Gerd Hoffmann
2010-03-17 9:17 ` [Qemu-devel] " Gerd Hoffmann
2010-03-17 10:33 ` Michael Tokarev [this message]
2010-03-17 10:33 ` Michael Tokarev
2010-03-17 11:18 ` Paul Brook
2010-03-17 11:18 ` Paul Brook
2010-03-22 8:35 ` Michael Tokarev
2010-03-22 8:35 ` Michael Tokarev
2010-03-22 9:02 ` Avi Kivity
2010-03-22 9:02 ` Avi Kivity
2010-03-17 9:19 ` Neo Jia
2010-03-17 10:35 ` Michael Tokarev
2010-03-17 18:45 ` Neo Jia
2010-03-17 19:16 ` Michael Tokarev
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