From: Marcelo Tosatti <mtosatti@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Eduardo Habkost" <ehabkost@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
qemu-devel@nongnu.org,
"Aleksandar Markovic" <aleksandar.qemu.devel@gmail.com>,
"Hervé Poussineau" <hpoussin@reactos.org>,
"Igor Mammedov" <imammedo@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Aurelien Jarno" <aurelien@aurel32.net>,
"Richard Henderson" <rth@twiddle.net>
Subject: Re: [PATCH-for-5.0 1/2] hw/acpi/piix4: Add 'system-hotplug-support' property
Date: Mon, 23 Mar 2020 08:04:52 -0300 [thread overview]
Message-ID: <20200323110452.GA14031@fuller.cnet> (raw)
In-Reply-To: <3f70d63d-e9ae-6676-edd5-20613b4b8856@redhat.com>
On Mon, Mar 23, 2020 at 09:05:06AM +0100, Paolo Bonzini wrote:
> On 22/03/20 17:27, Philippe Mathieu-Daudé wrote:
> >>>
> >> That 'ugly' is typically used within QEMU to deal with such things
> >> probably due to its low complexity.
> >
> > OK. Can you point me to the documentation for this feature? I can find
> > reference of GPE in the ICH9, but I can't find where this IO address on
> > the PIIX4 comes from:
> >
> > #define GPE_BASE 0xafe0
>
> It's made up. The implementation is placed in PIIX4_PM because it is
> referenced by the ACPI tables. Real hardware would probably place this
> in the ACPI embedded controller or in the BMC.
>
> Paolo
Yes, there was nothing at 0xafe0 at the time ACPI support was written.
next prev parent reply other threads:[~2020-03-23 11:19 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 22:15 [PATCH-for-5.0 0/2] hw/acpi/piix4: Restrict 'system hotplug' feature to i440fx PC machine Philippe Mathieu-Daudé
2020-03-18 22:15 ` [PATCH-for-5.0 1/2] hw/acpi/piix4: Add 'system-hotplug-support' property Philippe Mathieu-Daudé
2020-03-19 9:36 ` Paolo Bonzini
2020-03-19 9:42 ` Philippe Mathieu-Daudé
2020-03-19 10:02 ` Paolo Bonzini
2020-08-05 5:56 ` Philippe Mathieu-Daudé
2020-08-05 6:01 ` Philippe Mathieu-Daudé
2020-08-05 16:47 ` Igor Mammedov
2020-03-19 10:44 ` Igor Mammedov
2020-03-19 11:04 ` Philippe Mathieu-Daudé
2020-03-19 15:08 ` Igor Mammedov
2020-03-22 16:27 ` Philippe Mathieu-Daudé
2020-03-23 8:05 ` Paolo Bonzini
2020-03-23 11:04 ` Marcelo Tosatti [this message]
2020-08-03 17:10 ` Philippe Mathieu-Daudé
2020-08-03 17:33 ` Marcelo Tosatti
2020-08-04 18:28 ` Philippe Mathieu-Daudé
2020-03-18 22:15 ` [PATCH-for-5.0 2/2] hw/acpi/piix4: Restrict system-hotplug-support to x86 i440fx PC machine Philippe Mathieu-Daudé
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