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X-IronPort-AV: E=McAfee;i="6600,9927,10935"; a="395284842" X-IronPort-AV: E=Sophos;i="6.04,307,1695711600"; d="scan'208";a="395284842" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Dec 2023 16:53:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10935"; a="771293812" X-IronPort-AV: E=Sophos;i="6.04,307,1695711600"; d="scan'208";a="771293812" Received: from lkp-server02.sh.intel.com (HELO b07ab15da5fe) ([10.239.97.151]) by orsmga007.jf.intel.com with ESMTP; 26 Dec 2023 16:53:06 -0800 Received: from kbuild by b07ab15da5fe with local (Exim 4.96) (envelope-from ) id 1rIIAR-000Evz-0H; Wed, 27 Dec 2023 00:53:03 +0000 Date: Wed, 27 Dec 2023 08:52:23 +0800 From: kernel test robot To: Jordan Niethe Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Michael Ellerman Subject: arch/powerpc/kvm/test-guest-state-buffer.c:70:25: sparse: sparse: restricted __be64 degrades to integer Message-ID: <202312270830.t3f9Plc5-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: fbafc3e621c3f4ded43720fdb1d6ce1728ec664e commit: 6ccbbc33f06adaf79acde18571c6543ad1cb4be6 KVM: PPC: Add helper library for Guest State Buffers date: 3 months ago config: powerpc64-randconfig-r131-20231227 (https://download.01.org/0day-ci/archive/20231227/202312270830.t3f9Plc5-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20231227/202312270830.t3f9Plc5-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/202312270830.t3f9Plc5-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> arch/powerpc/kvm/test-guest-state-buffer.c:70:25: sparse: sparse: restricted __be64 degrades to integer >> arch/powerpc/kvm/test-guest-state-buffer.c:70:25: sparse: sparse: incorrect type in initializer (different base types) @@ expected long long left_value @@ got restricted __be64 const __left @@ arch/powerpc/kvm/test-guest-state-buffer.c:70:25: sparse: expected long long left_value arch/powerpc/kvm/test-guest-state-buffer.c:70:25: sparse: got restricted __be64 const __left arch/powerpc/kvm/test-guest-state-buffer.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/umh.h, include/linux/kmod.h, ...): include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false vim +70 arch/powerpc/kvm/test-guest-state-buffer.c 24 25 static void test_adding_element(struct kunit *test) 26 { 27 const struct kvmppc_gs_elem *head, *curr; 28 union { 29 __vector128 v; 30 u64 dw[2]; 31 } u; 32 int rem; 33 struct kvmppc_gs_buff *gsb; 34 size_t size = 0x1000; 35 int i, rc; 36 u64 data; 37 38 gsb = kvmppc_gsb_new(size, 0, 0, GFP_KERNEL); 39 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gsb); 40 41 /* Single elements, direct use of __kvmppc_gse_put() */ 42 data = 0xdeadbeef; 43 rc = __kvmppc_gse_put(gsb, KVMPPC_GSID_GPR(0), 8, &data); 44 KUNIT_EXPECT_GE(test, rc, 0); 45 46 head = kvmppc_gsb_data(gsb); 47 KUNIT_EXPECT_EQ(test, kvmppc_gse_iden(head), KVMPPC_GSID_GPR(0)); 48 KUNIT_EXPECT_EQ(test, kvmppc_gse_len(head), 8); 49 data = 0; 50 memcpy(&data, kvmppc_gse_data(head), 8); 51 KUNIT_EXPECT_EQ(test, data, 0xdeadbeef); 52 53 /* Multiple elements, simple wrapper */ 54 rc = kvmppc_gse_put_u64(gsb, KVMPPC_GSID_GPR(1), 0xcafef00d); 55 KUNIT_EXPECT_GE(test, rc, 0); 56 57 u.dw[0] = 0x1; 58 u.dw[1] = 0x2; 59 rc = kvmppc_gse_put_vector128(gsb, KVMPPC_GSID_VSRS(0), &u.v); 60 KUNIT_EXPECT_GE(test, rc, 0); 61 u.dw[0] = 0x0; 62 u.dw[1] = 0x0; 63 64 kvmppc_gsb_for_each_elem(i, curr, gsb, rem) { 65 switch (i) { 66 case 0: 67 KUNIT_EXPECT_EQ(test, kvmppc_gse_iden(curr), 68 KVMPPC_GSID_GPR(0)); 69 KUNIT_EXPECT_EQ(test, kvmppc_gse_len(curr), 8); > 70 KUNIT_EXPECT_EQ(test, kvmppc_gse_get_be64(curr), 71 0xdeadbeef); 72 break; 73 case 1: 74 KUNIT_EXPECT_EQ(test, kvmppc_gse_iden(curr), 75 KVMPPC_GSID_GPR(1)); 76 KUNIT_EXPECT_EQ(test, kvmppc_gse_len(curr), 8); 77 KUNIT_EXPECT_EQ(test, kvmppc_gse_get_u64(curr), 78 0xcafef00d); 79 break; 80 case 2: 81 KUNIT_EXPECT_EQ(test, kvmppc_gse_iden(curr), 82 KVMPPC_GSID_VSRS(0)); 83 KUNIT_EXPECT_EQ(test, kvmppc_gse_len(curr), 16); 84 kvmppc_gse_get_vector128(curr, &u.v); 85 KUNIT_EXPECT_EQ(test, u.dw[0], 0x1); 86 KUNIT_EXPECT_EQ(test, u.dw[1], 0x2); 87 break; 88 } 89 } 90 KUNIT_EXPECT_EQ(test, i, 3); 91 92 kvmppc_gsb_reset(gsb); 93 KUNIT_EXPECT_EQ(test, kvmppc_gsb_nelems(gsb), 0); 94 KUNIT_EXPECT_EQ(test, kvmppc_gsb_len(gsb), 95 sizeof(struct kvmppc_gs_header)); 96 97 kvmppc_gsb_free(gsb); 98 } 99 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki