linux-kernel - Re: [PATCH 3/4] KVM: arm/arm64: Check for broadcast TLBI support

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Date:	Sat, 6 Aug 2016 15:22:57 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Matthias Brugger <mbrugger@...e.com>
Cc:	kbuild-all@...org, pbonzini@...hat.com, rkrcmar@...hat.com,
	christoffer.dall@...aro.org, marc.zyngier@....com,
	linux@...linux.org.uk, catalin.marinas@....com,
	will.deacon@....com, suzuki.poulose@....com, james.morse@....com,
	david.daney@...ium.com, rrichter@...ium.com, agraf@...e.de,
	mbrugger@...e.com, mark.rutland@....com, lorenzo.pieralisi@....com,
	dave.long@...aro.org, ard.biesheuvel@...aro.org,
	zlim.lnx@...il.com, kvm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] KVM: arm/arm64: Check for broadcast TLBI support

Hi Matthias,

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.7]
[cannot apply to next-20160805]
[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/Matthias-Brugger/arm64-insn-Do-not-disable-irqs-during-patching/20160804-172016
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/arm.c: In function 'kvm_arch_init':
>> arch/arm/kvm/arm.c:1378:6: error: implicit declaration of function 'cpus_have_cap' [-Werror=implicit-function-declaration]
     if (cpus_have_cap(ARM64_HAS_NO_BCAST_TLBI)) {
         ^
>> arch/arm/kvm/arm.c:1378:20: error: 'ARM64_HAS_NO_BCAST_TLBI' undeclared (first use in this function)
     if (cpus_have_cap(ARM64_HAS_NO_BCAST_TLBI)) {
                       ^
   arch/arm/kvm/arm.c:1378:20: note: each undeclared identifier is reported only once for each function it appears in
   cc1: some warnings being treated as errors

vim +/cpus_have_cap +1378 arch/arm/kvm/arm.c

  1372	 */
  1373	int kvm_arch_init(void *opaque)
  1374	{
  1375		int err;
  1376		int ret, cpu;
  1377	
> 1378		if (cpus_have_cap(ARM64_HAS_NO_BCAST_TLBI)) {
  1379			kvm_err("Missing broadcast TLBI support.\n");
  1380			return -ENODEV;
  1381		}

---
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