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Message-ID: <5e27ba9e-69a1-bf70-941e-88637b4f5a3c@infradead.org>
Date:   Tue, 22 Nov 2022 08:57:52 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Johannes Berg <johannes@...solutions.net>,
        Alex Deucher <alexdeucher@...il.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        linux-staging@...ts.linux.dev, linux-um@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org
Subject: Re: Build regressions/improvements in v6.1-rc6



On 11/22/22 07:00, Johannes Berg wrote:
> On Tue, 2022-11-22 at 08:55 -0500, Alex Deucher wrote:
>>>
>>>    + /kisskb/src/arch/um/include/asm/processor-generic.h: error: called object is not a function or function pointer:  => 94:18
>>>    + /kisskb/src/drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c: error: control reaches end of non-void function [-Werror=return-type]:  => 1934:1
>>>
>>> um-x86_64/um-all{mod,yes}config (in kfd_cpumask_to_apic_id())
>>
>> Presumably cpu_data is not defined on um-x86_64?  Does it even make
>> sense to build drivers on um-x86_64?
> 
> Drivers in general yes ;-)
> 
> This driver, probably not.
> 
> But the issue is that a lot of drivers "depends on X86_64" or such,
> where only "X86" is the arch symbol. You could add "X86 && X86_64" to
> really build on x86 64-bit only.
> 
> I didn't check this driver, but this has mostly popped up since UM got
> PCI support some time ago (which I added.)

I have patches for lots of these issues, but some people said that they
would want to build DRM drivers for use with KUNIT (i.e. UML), so I thought
that meant my patches were not needed.

-- 
~Randy

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