Re: [PATCH v3] UML: pata_cs5536: fix build for X86_32 UML with TRACEPOINTS

[Randy Dunlap]

On 4/14/23 06:55, Johannes Berg wrote:
> On Sun, 2023-04-09 at 18:13 -0700, Randy Dunlap wrote:
>> Current build of pata_cs5536 for i386 UML fails with:
>>
>> ERROR: modpost: "__tracepoint_write_msr" [drivers/ata/pata_cs5536.ko] undefined!
>> ERROR: modpost: "do_trace_write_msr" [drivers/ata/pata_cs5536.ko] undefined!
>> ERROR: modpost: "__tracepoint_read_msr" [drivers/ata/pata_cs5536.ko] undefined!
>> ERROR: modpost: "do_trace_read_msr" [drivers/ata/pata_cs5536.ko] undefined!
>>
>> Add the arch/x86/lib/msr.o binary to resolve these undefined symbols.
>>
> 
> Hm. Does this make sense? I can't see it'd work on UML to configure an
> IDE device through MSRs? Surely that can't work? IOW, that entire driver
> can't really work anyway can it?
> 
> OTOH, maybe theoretically it could work in PCI, just not with MSRs, and
> then this patch makes some sense?

Hi,
I was happy with v1, which just did "depends on !UML".
Anyway, I'll drop this part of the quest to make UML build cleanly.

Thanks.
-- 
~Randy