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Re: [Qemu-devel] [PATCH v2 7/8] pc: port 92 reset requires a low->high t

From: Andreas Färber
Subject: Re: [Qemu-devel] [PATCH v2 7/8] pc: port 92 reset requires a low->high transition
Date: Mon, 12 May 2014 09:48:49 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0

Am 02.05.2014 16:33, schrieb Paolo Bonzini:
> The PIIX datasheet says that "before another INIT pulse can be
> generated via [port 92h], [bit 0] must be written back to a
> zero.
> This bug is masked right now because a full reset will clear the
> value of port 92h.  But once we implement soft reset correctly,
> the next attempt to enable the A20 line by setting bit 1 (and
> leaving the others untouched) will cause another reset.
> Reviewed-by: Anthony Liguori <address@hidden>
> Signed-off-by: Paolo Bonzini <address@hidden>

Reviewed-by: Andreas Färber <address@hidden>


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