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Date: Sun, 15 Mar 2015 20:49:38 +0800
From: Weidong Huang <hwd@huawei.com>
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Subject: [Qemu-devel] IO port 0x61 is multiple used
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To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Cc: arei.gonglei@huawei.com, peter.huangpeng@huawei.com

Hi ALL:

IO port 0x61 is used by pc speaker and NMI reason port.

This is ambiguous. How to distinguish in QEMU?

I see that NMI reason port is not realized in QEMU.

But linux guest will access this port to determine what the NMI reason code means.

It will access pc speaker's io port. Is this a bug?