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Date: Mon, 17 Jan 2011 16:36:47 +0200
From: "Michael S. Tsirkin" <mst@redhat.com>
Message-ID: <20110117143647.GA27919@redhat.com>
References: <20110111162037.699979125@redhat.com>
	<20110111162353.910330983@redhat.com>
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Subject: [Qemu-devel] Re: [patch 1/2] document QEMU<->ACPIBIOS PCI hotplug
	interface
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To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: qemu-devel@nongnu.org

On Tue, Jan 11, 2011 at 02:20:38PM -0200, Marcelo Tosatti wrote:
> Document how QEMU communicates with ACPI BIOS for PCI hotplug.
> 
> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

This one seems to add whitespae errors:
/scm/qemu/.git/rebase-apply/patch:5: new blank line at EOF.
+
warning: 1 line adds whitespace errors.

> Index: qemu/docs/specs/acpi_pci_hotplug.txt
> ===================================================================
> --- /dev/null
> +++ qemu/docs/specs/acpi_pci_hotplug.txt
> @@ -0,0 +1,39 @@
> +QEMU<->ACPI BIOS PCI hotplug interface
> +--------------------------------------
> +
> +QEMU supports PCI hotplug via ACPI, for PCI bus 0. This document
> +describes the interface between QEMU and the ACPI BIOS.
> +
> +ACPI GPE block (IO ports 0xafe0-0xafe3, byte access):
> +-----------------------------------------
> +
> +Generic ACPI GPE block. Bit 1 (GPE.1) used to notify PCI hotplug/eject
> +event to ACPI BIOS, via SCI interrupt.
> +
> +PCI slot injection notification pending (IO port 0xae00-0xae03, 4-byte access):
> +---------------------------------------------------------------
> +Slot injection notification pending. One bit per slot.
> +
> +Read by ACPI BIOS GPE.1 handler to notify OS of injection
> +events.
> +
> +PCI slot removal notification (IO port 0xae04-0xae07, 4-byte access):
> +-----------------------------------------------------
> +Slot removal notification pending. One bit per slot.
> +
> +Read by ACPI BIOS GPE.1 handler to notify OS of removal
> +events.
> +
> +PCI device eject (IO port 0xae08-0xae0b, 4-byte access):
> +----------------------------------------
> +
> +Used by ACPI BIOS _EJ0 method to request device removal. One bit per slot.
> +Reads return 0.
> +
> +PCI removability status (IO port 0xae0c-0xae0f, 4-byte access):
> +-----------------------------------------------
> +
> +Used by ACPI BIOS _RMV method to indicate removability status to OS. One
> +bit per slot.
> +
> +
>