From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 980B4CE7B08 for ; Thu, 28 Sep 2023 18:39:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232142AbjI1SjC (ORCPT ); Thu, 28 Sep 2023 14:39:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59896 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230239AbjI1SjA (ORCPT ); Thu, 28 Sep 2023 14:39:00 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8257BF for ; Thu, 28 Sep 2023 11:38:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695926339; x=1727462339; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=SRt0ApsPLAejTe4DqWKL3dO8veOZGbj20kTrfbpeBR0=; b=d05n0hM9nKavEDGIUh+YOI9ANOrBjiq8S+gSadardZWW8/kHA58JHD2h 1ADia9jwrVDfnx+4ZfZaWdemcf2xZtgV/RyfGlu0ncpKUAI8gqCqtOVGn eGI25Vu0dVPv1r68IAqUE7wVh4JDMsIaDLXEwZ1l2Z7WEKqvR9NCvYpu/ oHjK7a++fKH4uKRpx9SPj6iQxPECnjKk/IpkgBY1hghNIE59GfGHm2ZYq EyaTlVngWMOoRdjV/OXxe57o6etoGTIbnb5QfopSqGioZtESCWFE+81H5 3/0F4ebNxbTC6HshTSPIDlXGgg4OSXW6Ev6yt8jPK6xREUH2Q3F8Omq4K Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10847"; a="468427171" X-IronPort-AV: E=Sophos;i="6.03,184,1694761200"; d="scan'208";a="468427171" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Sep 2023 11:34:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10847"; a="840005518" X-IronPort-AV: E=Sophos;i="6.03,184,1694761200"; d="scan'208";a="840005518" Received: from lkp-server02.sh.intel.com (HELO c3b01524d57c) ([10.239.97.151]) by FMSMGA003.fm.intel.com with ESMTP; 28 Sep 2023 11:34:21 -0700 Received: from kbuild by c3b01524d57c with local (Exim 4.96) (envelope-from ) id 1qlvq6-0001nx-2p; Thu, 28 Sep 2023 18:34:18 +0000 Date: Fri, 29 Sep 2023 02:33:50 +0800 From: kernel test robot To: Sebastian Ene , linux-kernel@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, kernel-team@android.com, will@kernel.org, ryan.roberts@arm.com, mark.rutland@arm.com, maz@kernel.org, vdonnefort@google.com, Sebastian Ene Subject: Re: [PATCH 01/11] KVM: arm64: Add snap shooting the host stage-2 pagetables Message-ID: <202309290210.m6jkiTXx-lkp@intel.com> References: <20230927112517.2631674-2-sebastianene@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230927112517.2631674-2-sebastianene@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sebastian, kernel test robot noticed the following build warnings: [auto build test WARNING on arm64/for-next/core] [also build test WARNING on kvmarm/next linus/master v6.6-rc3 next-20230928] [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/Sebastian-Ene/KVM-arm64-Add-snap-shooting-the-host-stage-2-pagetables/20230927-192734 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core patch link: https://lore.kernel.org/r/20230927112517.2631674-2-sebastianene%40google.com patch subject: [PATCH 01/11] KVM: arm64: Add snap shooting the host stage-2 pagetables config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20230929/202309290210.m6jkiTXx-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230929/202309290210.m6jkiTXx-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202309290210.m6jkiTXx-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/arm64/kvm/hyp/nvhe/mem_protect.c: In function '__pkvm_host_stage2_prepare_copy': >> arch/arm64/kvm/hyp/nvhe/mem_protect.c:335:13: warning: variable 'nr_pages' set but not used [-Wunused-but-set-variable] 335 | u64 nr_pages; | ^~~~~~~~ vim +/nr_pages +335 arch/arm64/kvm/hyp/nvhe/mem_protect.c 326 327 int __pkvm_host_stage2_prepare_copy(struct kvm_pgtable_snapshot *snapshot) 328 { 329 size_t required_pgd_len; 330 struct kvm_pgtable_mm_ops mm_ops = {0}; 331 struct kvm_pgtable *to_pgt, *from_pgt = &host_mmu.pgt; 332 struct kvm_hyp_memcache *memcache = &snapshot->mc; 333 int ret; 334 void *pgd; > 335 u64 nr_pages; 336 337 required_pgd_len = kvm_pgtable_stage2_pgd_size(host_mmu.arch.vtcr); 338 if (snapshot->pgd_len < required_pgd_len) 339 return -ENOMEM; 340 341 to_pgt = &snapshot->pgtable; 342 nr_pages = snapshot->pgd_len / PAGE_SIZE; 343 pgd = kern_hyp_va(snapshot->pgd_hva); 344 345 hyp_spin_lock(&snapshot_pool_lock); 346 hyp_pool_init(&snapshot_pool, hyp_virt_to_pfn(pgd), 347 required_pgd_len / PAGE_SIZE, 0); 348 349 mm_ops.zalloc_pages_exact = snapshot_zalloc_pages_exact; 350 mm_ops.zalloc_page = snapshot_zalloc_page; 351 mm_ops.free_pages_exact = snapshot_s2_free_pages_exact; 352 mm_ops.get_page = snapshot_get_page; 353 mm_ops.phys_to_virt = hyp_phys_to_virt; 354 mm_ops.virt_to_phys = hyp_virt_to_phys; 355 mm_ops.page_count = hyp_page_count; 356 357 to_pgt->ia_bits = from_pgt->ia_bits; 358 to_pgt->start_level = from_pgt->start_level; 359 to_pgt->flags = from_pgt->flags; 360 to_pgt->mm_ops = &mm_ops; 361 362 host_lock_component(); 363 ret = kvm_pgtable_stage2_copy(to_pgt, from_pgt, memcache); 364 host_unlock_component(); 365 366 hyp_spin_unlock(&snapshot_pool_lock); 367 368 return ret; 369 } 370 #endif /* CONFIG_NVHE_EL2_DEBUG */ 371 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki