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Re: [Qemu-devel] [PATCH v2 1/3] q35: set split kernel irqchip as default

From: Eduardo Habkost
Subject: Re: [Qemu-devel] [PATCH v2 1/3] q35: set split kernel irqchip as default
Date: Thu, 20 Dec 2018 10:13:08 -0200
User-agent: Mutt/1.10.1 (2018-07-13)

On Thu, Dec 20, 2018 at 01:40:35PM +0800, Peter Xu wrote:
> Starting from QEMU 4.0, let's specify "split" as the default value for
> kernel-irqchip.
> So for QEMU>=4.0 we'll have: allowed=Y,required=N,split=Y
>    for QEMU<=3.1 we'll have: allowed=Y,required=N,split=N
>    (omitting all the "kernel_irqchip_" prefix)
> Note that this will let the default q35 machine type to depend on
> Linux version 4.4 or newer because that's where split irqchip is
> introduced in kernel.  But it's fine since we're boosting supported
> Linux version for QEMU 4.0 to around Linux 4.5.  For more information
> please refer to the discussion on AMD's RDTSCP:
>   https://lore.kernel.org/lkml/address@hidden/
> Signed-off-by: Peter Xu <address@hidden>

Reviewed-by: Eduardo Habkost <address@hidden>


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