Messages in this thread | | | Date | Thu, 26 Oct 2023 20:45:12 +0800 | From | kernel test robot <> | Subject | Re: [PATCH v2 01/11] KVM: arm64: Add snap shooting the host stage-2 pagetables |
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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 akpm-mm/mm-everything linus/master v6.6-rc7 next-20231025] [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/20231019-224346 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core patch link: https://lore.kernel.org/r/20231019144032.2943044-3-sebastianene%40google.com patch subject: [PATCH v2 01/11] KVM: arm64: Add snap shooting the host stage-2 pagetables config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20231026/202310262036.TVwm0bsI-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/20231026/202310262036.TVwm0bsI-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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202310262036.TVwm0bsI-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
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