linux-kernel - Re: [PATCH v2 33/43] arm64: rme: Enable PMU support with a realm guest

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Date: Thu, 18 Apr 2024 17:06:20 +0100
From: Suzuki K Poulose <suzuki.poulose@....com>
To: kernel test robot <lkp@...el.com>, Steven Price <steven.price@....com>,
 kvm@...r.kernel.org, kvmarm@...ts.linux.dev
Cc: oe-kbuild-all@...ts.linux.dev, Catalin Marinas <catalin.marinas@....com>,
 Marc Zyngier <maz@...nel.org>, Will Deacon <will@...nel.org>,
 James Morse <james.morse@....com>, Oliver Upton <oliver.upton@...ux.dev>,
 Zenghui Yu <yuzenghui@...wei.com>, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, Joey Gouly <joey.gouly@....com>,
 Alexandru Elisei <alexandru.elisei@....com>,
 Christoffer Dall <christoffer.dall@....com>, Fuad Tabba <tabba@...gle.com>,
 linux-coco@...ts.linux.dev,
 Ganapatrao Kulkarni <gankulkarni@...amperecomputing.com>,
 Jean-Philippe Brucker <jean-philippe@...aro.org>
Subject: Re: [PATCH v2 33/43] arm64: rme: Enable PMU support with a realm
 guest

On 14/04/2024 00:44, kernel test robot wrote:
> Hi Steven,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on kvmarm/next]
> [also build test ERROR on kvm/queue arm64/for-next/core linus/master v6.9-rc3 next-20240412]
> [cannot apply to kvm/linux-next]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Steven-Price/KVM-Prepare-for-handling-only-shared-mappings-in-mmu_notifier-events/20240412-170311
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
> patch link:    https://lore.kernel.org/r/20240412084309.1733783-34-steven.price%40arm.com
> patch subject: [PATCH v2 33/43] arm64: rme: Enable PMU support with a realm guest
> config: arm64-randconfig-r064-20240414 (https://download.01.org/0day-ci/archive/20240414/202404140723.GKwnJxeZ-lkp@intel.com/config)
> compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 8b3b4a92adee40483c27f26c478a384cd69c6f05)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240414/202404140723.GKwnJxeZ-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202404140723.GKwnJxeZ-lkp@intel.com/

I guess the problem is with CONFIG_HW_PERF_EVENT not set, arm_pmu is an
empty struct, triggering all these errors.

Suzuki