linux-kernel - Re: [PATCH V4 2/3] Revert "ACPI,PCI,IRQ: remove SCI penalize function"

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Message-ID: <2a824792-486a-6251-4931-c5cc6fd67978@codeaurora.org>
Date:   Fri, 21 Oct 2016 09:13:06 -0700
From:   Sinan Kaya <okaya@...eaurora.org>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     linux-acpi@...r.kernel.org, rjw@...ysocki.net, bhelgaas@...gle.com,
        ravikanth.nalla@....com, linux@...nbow-software.org,
        timur@...eaurora.org, cov@...eaurora.org, jcm@...hat.com,
        alex.williamson@...hat.com, Len Brown <len.brown@...el.com>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        linux-pm@...r.kernel.org, linux-pci@...r.kernel.org,
        agross@...eaurora.org, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...hat.com>, Pavel Machek <pavel@....cz>,
        linux-arm-msm@...r.kernel.org, wim@....tudelft.nl,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH V4 2/3] Revert "ACPI,PCI,IRQ: remove SCI penalize
 function"

On 10/21/2016 7:45 AM, Bjorn Helgaas wrote:
> [1] http://marc.info/?l=linux-acpi&m=145580159209240&w=2)
> 
>> > Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>
> Wait a minute, I still have a question here: what about other ACPI
> arches (ia64, arm64)?  Don't they need to call acpi_penalize_sci_irq()
> somewhere?
> 

ACPI ARM64 architecture implements reduced ACPI profile which doesn't
have GED object. Instead, ARM64 architecture uses onchip peripherals
for similar functionality. If there is a need to signal interrupts,
this is done by ACPI Notify in ASL or if absolutely needed using
ACPI Generic Event Device (GED).

-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.