From: Marc Zyngier <maz@kernel.org>
To: kernel test robot <lkp@intel.com>
Cc: clang-built-linux@googlegroups.com, kbuild-all@lists.01.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [arm-platforms:kvm-arm64/pmu-undef-fixes 29/30] arch/arm64/kvm/sys_regs.c:1544:13: warning: initializer overrides prior initialization of this subobject
Date: Fri, 08 Jan 2021 14:29:53 +0000 [thread overview]
Message-ID: <074e77e62c94400da4bac17e1aa137e9@kernel.org> (raw)
In-Reply-To: <202101082253.LtrQbZvn-lkp@intel.com>
On 2021-01-08 14:18, kernel test robot wrote:
> tree:
> https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
> kvm-arm64/pmu-undef-fixes
> head: 248735e2001115f36e70105cb9dadff95a9fdb42
> commit: 9bde3c476c881793f310f38a5f705b0394283f8b [29/30] KVM: arm64:
> Hide PMU registers from userspace when not available
> config: arm64-randconfig-r012-20210108 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project
> 5c951623bc8965fa1e89660f2f5f4a2944e4981a)
> reproduce (this is a W=1 build):
> wget
> https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross
> -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install arm64 cross compiling tool for clang build
> # apt-get install binutils-aarch64-linux-gnu
> #
> https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/commit/?id=9bde3c476c881793f310f38a5f705b0394283f8b
> git remote add arm-platforms
> https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
> git fetch --no-tags arm-platforms kvm-arm64/pmu-undef-fixes
> git checkout 9bde3c476c881793f310f38a5f705b0394283f8b
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross
> ARCH=arm64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
>>> arch/arm64/kvm/sys_regs.c:1544:13: warning: initializer overrides
>>> prior initialization of this subobject [-Winitializer-overrides]
> .reset = reset_pmcr, .reg = PMCR_EL0 },
> ^~~~~~~~~~
> arch/arm64/kvm/sys_regs.c:1543:4: note: previous initialization is
> here
> { PMU_SYS_REG(SYS_PMCR_EL0), .access = access_pmcr,
> ^~~~~~~~~~~~~~~~~~~~~~~~~
> arch/arm64/kvm/sys_regs.c:949:24: note: expanded from macro
> 'PMU_SYS_REG'
> SYS_DESC(r), .reset = reset_unknown, .visibility =
> pmu_visibility
> ^~~~~~~~~~~~~
[...]
No, this is correct and done on purpose. There is a default
initialisation,
and some structures do override the default.
M.
--
Jazz is not dead. It just smells funny...
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linux-arm-kernel@lists.infradead.org
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WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: kbuild-all@lists.01.org
Subject: Re: [arm-platforms:kvm-arm64/pmu-undef-fixes 29/30] arch/arm64/kvm/sys_regs.c:1544:13: warning: initializer overrides prior initialization of this subobject
Date: Fri, 08 Jan 2021 14:29:53 +0000 [thread overview]
Message-ID: <074e77e62c94400da4bac17e1aa137e9@kernel.org> (raw)
In-Reply-To: <202101082253.LtrQbZvn-lkp@intel.com>
[-- Attachment #1: Type: text/plain, Size: 2367 bytes --]
On 2021-01-08 14:18, kernel test robot wrote:
> tree:
> https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
> kvm-arm64/pmu-undef-fixes
> head: 248735e2001115f36e70105cb9dadff95a9fdb42
> commit: 9bde3c476c881793f310f38a5f705b0394283f8b [29/30] KVM: arm64:
> Hide PMU registers from userspace when not available
> config: arm64-randconfig-r012-20210108 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project
> 5c951623bc8965fa1e89660f2f5f4a2944e4981a)
> reproduce (this is a W=1 build):
> wget
> https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross
> -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install arm64 cross compiling tool for clang build
> # apt-get install binutils-aarch64-linux-gnu
> #
> https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/commit/?id=9bde3c476c881793f310f38a5f705b0394283f8b
> git remote add arm-platforms
> https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
> git fetch --no-tags arm-platforms kvm-arm64/pmu-undef-fixes
> git checkout 9bde3c476c881793f310f38a5f705b0394283f8b
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross
> ARCH=arm64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
>>> arch/arm64/kvm/sys_regs.c:1544:13: warning: initializer overrides
>>> prior initialization of this subobject [-Winitializer-overrides]
> .reset = reset_pmcr, .reg = PMCR_EL0 },
> ^~~~~~~~~~
> arch/arm64/kvm/sys_regs.c:1543:4: note: previous initialization is
> here
> { PMU_SYS_REG(SYS_PMCR_EL0), .access = access_pmcr,
> ^~~~~~~~~~~~~~~~~~~~~~~~~
> arch/arm64/kvm/sys_regs.c:949:24: note: expanded from macro
> 'PMU_SYS_REG'
> SYS_DESC(r), .reset = reset_unknown, .visibility =
> pmu_visibility
> ^~~~~~~~~~~~~
[...]
No, this is correct and done on purpose. There is a default
initialisation,
and some structures do override the default.
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2021-01-08 14:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-08 14:18 [arm-platforms:kvm-arm64/pmu-undef-fixes 29/30] arch/arm64/kvm/sys_regs.c:1544:13: warning: initializer overrides prior initialization of this subobject kernel test robot
2021-01-08 14:18 ` kernel test robot
2021-01-08 14:29 ` Marc Zyngier [this message]
2021-01-08 14:29 ` Marc Zyngier
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