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Re: [Qemu-devel] Re: >2 serial ports?
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] Re: >2 serial ports? |
Date: |
Wed, 17 Mar 2010 11:18:09 +0000 |
User-agent: |
KMail/1.12.4 (Linux/2.6.32-trunk-amd64; KDE/4.3.4; x86_64; ; ) |
> 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.
This is wrong. Two devices should never be manipulating the same qemu_irq
object. If you want multiple devices connected to the same IRQ then you need
an explicit multiplexer. e.g. arm_timer.c:sp804_set_irq.
Paul