From: Keir Fraser <keir.fraser@eu.citrix.com>
To: Tom Rotenberg <tom.rotenberg@gmail.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: Adding another GPE section to an HVM, causes the original GPE to stop functioning
Date: Sun, 18 Oct 2009 17:33:31 +0100 [thread overview]
Message-ID: <C70101EB.17DC5%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <8686c3cd0910180613la4898a0q6a4526d8d6469754@mail.gmail.com>
On 18/10/2009 14:13, "Tom Rotenberg" <tom.rotenberg@gmail.com> wrote:
> Since i have inserted this new GPE block, the outcome is, that my new
> GPE block is responding OK, however, the old GPE block (the regular
> Xen gpe0 block), isn't responding anymore - thus i can't
> hot-plugqhot-unplug PT devices.
>
> I have analyzed the qemu logs a little bit, and it looks like, since
> the addition of the new GPE block, Windows for some reason, only
> enables the new gpe block (gpe1 block), and disables the old gpe block
> (regular Xen gpe0 block).
>
> Can someone please assist me with this issue?
Since you do not set Fadt.gpe1_base, gpe1's events are precisely overlapping
with gpe0's. This is actually a bug, and Windows is interpreting the broken
tables as best it can, by assuming that GPE1 overrides GPE0. Probably you
mean to set Fadt.gpe1_base=(ACPI_GPE0_LEN/2)*8 or something like that.
-- Keir
next prev parent reply other threads:[~2009-10-18 16:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-18 13:13 Adding another GPE section to an HVM, causes the original GPE to stop functioning Tom Rotenberg
2009-10-18 16:33 ` Keir Fraser [this message]
2009-10-18 18:35 ` Tom Rotenberg
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