Re: [Xen-devel] [OSSTEST PATCH 21/62] ts-kernel-build: disable host1x, which doesn't build

[Julien Grall <julien.grall@xxxxxxx>]

Hi Ian,

On 4/10/19 4:47 PM, Ian Jackson wrote:
> Julien Grall writes ("Re: [OSSTEST PATCH 21/62] ts-kernel-build: disable host1x, 
> which doesn't build"):
> > Ian are we using a different config between Jessie and Stretch?
> Not very [1], but we *are* using a different compiler (since we just
> use the one from the distro).
>
> [1] There are some changes to add some ThunderX drivers, in a patch
> that you suggested :-):
>
> +setopt CONFIG_PCI_HOST_THUNDER_PEM=y
> +setopt CONFIG_PCI_HOST_THUNDER_ECAM=y
> +setopt CONFIG_THUNDER_NIC_PF=m
> +setopt CONFIG_THUNDER_NIC_VF=m
> +setopt CONFIG_THUNDER_NIC_BGX=m
> +setopt CONFIG_THUNDER_NIC_RGX=m
> +setopt CONFIG_MDIO_THUNDER=m
> +setopt CONFIG_I2C_THUNDERX=m
> +setopt CONFIG_SPI_THUNDERX=m
>
> I doubt these are related.
Right, this should not change the selection of the host1x driver. So 
this is mostly like due to the compiler change.
> It's nice to know that it's fixed in 4.18.  I don't know how
> disruptive it would be to backport it.  I could perhaps make the
> config option to disable host1x conditional on the Linux kernel
> version but it seems easier to just leave things as they are and take
> the workaround out at some point in the distant future when all
> kernels we care about have the fix.
I agree that this is the most sensible approach for now.

Looking at [1], I guess we would need to request backport up to 3.18?

Cheers,

[1] 
http://logs.test-lab.xenproject.org/osstest/results/all-branch-statuses.txt
--
Julien Grall

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