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Message-ID: <021efb6c9295402cf05406bb319c441c0b0229b3.camel@sipsolutions.net>
Date:   Tue, 22 Nov 2022 16:00:34 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     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 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.)

johannes


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