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From:   Vitaly Kuznetsov <vkuznets@redhat.com>
To:     Thomas Gleixner <tglx@linutronix.de>
Cc:     kbuild test robot <lkp@intel.com>, kbuild-all@01.org,
        kvm@vger.kernel.org, x86@kernel.org,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        linux-kernel@vger.kernel.org, devel@linuxdriverproject.org,
        "Michael Kelley \(EOSG\)" <Michael.H.Kelley@microsoft.com>,
        Ingo Molnar <mingo@redhat.com>,
        Roman Kagan <rkagan@virtuozzo.com>,
        Andy Lutomirski <luto@kernel.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Mohammed Gamal <mmorsy@redhat.com>
Subject: Re: [PATCH v3 3/7] x86/hyper-v: reenlightenment notifications support
References: <20180116182700.1042-4-vkuznets@redhat.com>
        <201801191841.QZ26OYif%fengguang.wu@intel.com>
        <87o9lqdt15.fsf@vitty.brq.redhat.com>
        <alpine.DEB.2.20.1801200846210.1998@nanos>
Date:   Mon, 22 Jan 2018 11:41:43 +0100
In-Reply-To: <alpine.DEB.2.20.1801200846210.1998@nanos> (Thomas Gleixner's
        message of "Sat, 20 Jan 2018 08:48:07 +0100 (CET)")
Message-ID: <87shaych08.fsf@vitty.brq.redhat.com>
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Thomas Gleixner <tglx@linutronix.de> writes:

> On Fri, 19 Jan 2018, Vitaly Kuznetsov wrote:
>> kbuild test robot <lkp@intel.com> writes:
>> 
>> > Hi Vitaly,
>> >
>> > Thank you for the patch! Perhaps something to improve:
>> >
>> > [auto build test WARNING on tip/auto-latest]
>> > [also build test WARNING on v4.15-rc8 next-20180118]
>> > [cannot apply to tip/x86/core kvm/linux-next]
>> > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>> >
>> > url:    https://github.com/0day-ci/linux/commits/Vitaly-Kuznetsov/x86-kvm-hyperv-stable-clocksorce-for-L2-guests-when-running-nested-KVM-on-Hyper-V/20180119-160814
>> > config: x86_64-allmodconfig (attached as .config)
>> > compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
>> > reproduce:
>> >         # save the attached .config to linux build tree
>> >         make ARCH=x86_64 
>> >
>> > All warnings (new ones prefixed by >>):
>> >
>> >    In file included from include/linux/kasan.h:17:0,
>> >                     from include/linux/slab.h:129,
>> >                     from include/linux/irq.h:26,
>> >                     from arch/x86/include/asm/hardirq.h:6,
>> >                     from include/linux/hardirq.h:9,
>> >                     from include/linux/interrupt.h:13,
>> >                     from arch/x86/include/asm/mshyperv.h:8,
>> >                     from arch/x86//entry/vdso/vdso32/../vclock_gettime.c:20,
>> >                     from arch/x86//entry/vdso/vdso32/vclock_gettime.c:33:
>> >    arch/x86/include/asm/pgtable.h: In function 'clone_pgd_range':
>> >    arch/x86/include/asm/pgtable.h:1129:9: error: implicit declaration of function 'kernel_to_user_pgdp'; did you mean 'u64_to_user_ptr'? [-Werror=implicit-function-declaration]
>> >      memcpy(kernel_to_user_pgdp(dst), kernel_to_user_pgdp(src),
>> >             ^~~~~~~~~~~~~~~~~~~
>> 
>> Sorry but I'm failing to see how this (and all the rest) is related to
>> my patch ...
>
> You added '#include <linux/interrupt.h>' to mshyperv.h which is included in
> vclock_gettime.c and pulls in other stuff which fails to expand....
>

Oh, right, thanks! I'll see what can be done.

-- 
  Vitaly