linux-kernel - Re: [PATCH RFC v4 00/13] virtio-mem: paravirtualized memory

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Date:   Tue, 24 Dec 2019 10:28:20 +0100
From:   David Hildenbrand <david@...hat.com>
To:     teawater <teawaterz@...ux.alibaba.com>
Cc:     David Hildenbrand <david@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>, virtio-dev@...ts.oasis-open.org,
        virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
        Michal Hocko <mhocko@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Sebastien Boeuf <sebastien.boeuf@...el.com>,
        Samuel Ortiz <samuel.ortiz@...el.com>,
        Robert Bradford <robert.bradford@...el.com>,
        Luiz Capitulino <lcapitulino@...hat.com>,
        Alexander Duyck <alexander.h.duyck@...ux.intel.com>,
        Alexander Potapenko <glider@...gle.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Anthony Yznaga <anthony.yznaga@...cle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Young <dyoung@...hat.com>,
        Igor Mammedov <imammedo@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Juergen Gross <jgross@...e.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Len Brown <lenb@...nel.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Michal Hocko <mhocko@...e.com>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Oscar Salvador <osalvador@...e.com>,
        Oscar Salvador <osalvador@...e.de>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Pavel Tatashin <pavel.tatashin@...rosoft.com>,
        Pingfan Liu <kernelfans@...il.com>, Qian Cai <cai@....pw>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Wei Yang <richard.weiyang@...il.com>
Subject: Re: [PATCH RFC v4 00/13] virtio-mem: paravirtualized memory



> Am 24.12.2019 um 08:04 schrieb teawater <teawaterz@...ux.alibaba.com>:
> 
> Hi David,
> 
> Thanks for your work.
> 
> I Got following build fail if X86_64_ACPI_NUMA is n with rfc3 and rfc4:
> make -j8 bzImage
>  GEN     Makefile
>  DESCEND  objtool
>  CALL    /home/teawater/kernel/linux-upstream3/scripts/atomic/check-atomics.sh
>  CALL    /home/teawater/kernel/linux-upstream3/scripts/checksyscalls.sh
>  CHK     include/generated/compile.h
>  CC      drivers/virtio/virtio_mem.o
> /home/teawater/kernel/linux-upstream3/drivers/virtio/virtio_mem.c: In function ‘virtio_mem_translate_node_id’:
> /home/teawater/kernel/linux-upstream3/drivers/virtio/virtio_mem.c:478:10: error: implicit declaration of function ‘pxm_to_node’ [-Werror=implicit-function-declaration]
>   node = pxm_to_node(node_id);
>          ^~~~~~~~~~~
> cc1: some warnings being treated as errors
> /home/teawater/kernel/linux-upstream3/scripts/Makefile.build:265: recipe for target 'drivers/virtio/virtio_mem.o' failed
> make[3]: *** [drivers/virtio/virtio_mem.o] Error 1
> /home/teawater/kernel/linux-upstream3/scripts/Makefile.build:503: recipe for target 'drivers/virtio' failed
> make[2]: *** [drivers/virtio] Error 2
> /home/teawater/kernel/linux-upstream3/Makefile:1649: recipe for target 'drivers' failed
> make[1]: *** [drivers] Error 2
> /home/teawater/kernel/linux-upstream3/Makefile:179: recipe for target 'sub-make' failed
> make: *** [sub-make] Error 2
> 

Thanks Hui,

So it has to be wrapped in an ifdef, thanks!

Cheers!