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Re: [Qemu-arm] [PATCH] virt-acpi-build: add always-on property for timer

From: Peter Maydell
Subject: Re: [Qemu-arm] [PATCH] virt-acpi-build: add always-on property for timer
Date: Mon, 25 Jan 2016 11:56:18 +0000

On 21 January 2016 at 12:54, Andrew Jones <address@hidden> wrote:
> This patch is the ACPI equivalent of "hw/arm/virt: Add always-on
> property to the virt board timer". The timer is always on, and
> thus setting this informs Linux that it may switch off the periodic
> timer. Switching off the periodic timer substantially reduces the
> number of interrupts the host needs to inject.
> Testing note: AArch64 guests (the only ones currently booting with
> ACPI) do not actually need this patch to determine it can turn the
> periodic timer off. I therefore used a hacked guest kernel to ensure
> this patch works as the equivalent DT patch does.
> Signed-off-by: Andrew Jones <address@hidden>

Applied to target-arm.next, thanks.

-- PMM

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