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Message-ID: <202410192244.k4KFmVBy-lkp@intel.com>
Date: Sat, 19 Oct 2024 22:12:01 +0800
From: kernel test robot <lkp@...el.com>
To: Brian Gerst <brgerst@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Ingo Molnar <mingo@...nel.org>
Subject: arch/x86/xen/enlighten_pv.c:1407:28: sparse: sparse: incorrect type
in initializer (different address spaces)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 3d5ad2d4eca337e80f38df77de89614aa5aaceb9
commit: 11e36b0f7c2150a6453872b79555767b43c846d0 x86/boot/64: Load the final kernel GDT during early boot directly, remove startup_gdt[]
date: 8 months ago
config: x86_64-randconfig-122-20241019 (https://download.01.org/0day-ci/archive/20241019/202410192244.k4KFmVBy-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241019/202410192244.k4KFmVBy-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/202410192244.k4KFmVBy-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> arch/x86/xen/enlighten_pv.c:1407:28: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct gdt_page * @@
arch/x86/xen/enlighten_pv.c:1407:28: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/x86/xen/enlighten_pv.c:1407:28: sparse: got struct gdt_page *
arch/x86/xen/enlighten_pv.c: note: in included file (through arch/x86/include/asm/stackprotector.h, include/linux/stackprotector.h):
arch/x86/include/asm/desc.h:54:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct gdt_page * @@
arch/x86/include/asm/desc.h:54:16: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/x86/include/asm/desc.h:54:16: sparse: got struct gdt_page *
vim +1407 arch/x86/xen/enlighten_pv.c
8b87d8cec1b31e Peter Zijlstra 2022-03-08 1311
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1312 /* First C function to be called on Xen boot */
96e8fc5818686d Juergen Gross 2022-06-30 1313 asmlinkage __visible void __init xen_start_kernel(struct start_info *si)
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1314 {
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1315 struct physdev_set_iopl set_iopl;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1316 unsigned long initrd_start = 0;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1317 int rc;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1318
96e8fc5818686d Juergen Gross 2022-06-30 1319 if (!si)
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1320 return;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1321
96e8fc5818686d Juergen Gross 2022-06-30 1322 clear_bss();
96e8fc5818686d Juergen Gross 2022-06-30 1323
96e8fc5818686d Juergen Gross 2022-06-30 1324 xen_start_info = si;
96e8fc5818686d Juergen Gross 2022-06-30 1325
8b87d8cec1b31e Peter Zijlstra 2022-03-08 1326 __text_gen_insn(&early_xen_iret_patch,
8b87d8cec1b31e Peter Zijlstra 2022-03-08 1327 JMP32_INSN_OPCODE, &early_xen_iret_patch, &xen_iret,
8b87d8cec1b31e Peter Zijlstra 2022-03-08 1328 JMP32_INSN_SIZE);
8b87d8cec1b31e Peter Zijlstra 2022-03-08 1329
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1330 xen_domain_type = XEN_PV_DOMAIN;
1fe83888a2b776 Roger Pau Monne 2018-06-08 1331 xen_start_flags = xen_start_info->flags;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1332
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1333 xen_setup_features();
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1334
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1335 /* Install Xen paravirt ops */
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1336 pv_info = xen_info;
1462eb381b4c27 Peter Zijlstra 2021-06-24 1337 pv_ops.cpu = xen_cpu_ops.cpu;
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1338 xen_init_irq_ops();
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1339
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1340 /*
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1341 * Setup xen_vcpu early because it is needed for
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1342 * local_irq_disable(), irqs_disabled(), e.g. in printk().
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1343 *
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1344 * Don't do the full vcpu_info placement stuff until we have
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1345 * the cpu_possible_mask and a non-dummy shared_info.
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1346 */
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1347 xen_vcpu_info_reset(0);
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1348
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1349 x86_platform.get_nmi_reason = xen_get_nmi_reason;
f1e525009493cb Juergen Gross 2022-11-23 1350 x86_platform.realmode_reserve = x86_init_noop;
f1e525009493cb Juergen Gross 2022-11-23 1351 x86_platform.realmode_init = x86_init_noop;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1352
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1353 x86_init.resources.memory_setup = xen_memory_setup;
979923871f69a4 Thomas Gleixner 2020-01-23 1354 x86_init.irqs.intr_mode_select = x86_init_noop;
3b5244bef15e0e Juergen Gross 2023-08-08 1355 x86_init.irqs.intr_mode_init = x86_64_probe_apic;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1356 x86_init.oem.arch_setup = xen_arch_setup;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1357 x86_init.oem.banner = xen_banner;
7b25b9cb0dad83 Pavel Tatashin 2018-07-19 1358 x86_init.hyper.init_platform = xen_pv_init_platform;
7b25b9cb0dad83 Pavel Tatashin 2018-07-19 1359 x86_init.hyper.guest_late_init = xen_pv_guest_late_init;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1360
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1361 /*
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1362 * Set up some pagetable state before starting to set any ptes.
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1363 */
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1364
0ce0bba4e5e0eb Juergen Gross 2018-07-12 1365 xen_setup_machphys_mapping();
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1366 xen_init_mmu_ops();
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1367
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1368 /* Prevent unwanted bits from being set in PTEs. */
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1369 __supported_pte_mask &= ~_PAGE_GLOBAL;
e69b5d308da72c Juergen Gross 2018-07-02 1370 __default_kernel_pte_mask &= ~_PAGE_GLOBAL;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1371
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1372 /* Get mfn list */
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1373 xen_build_dynamic_phys_to_machine();
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1374
ae897fda4f507e Jan Beulich 2021-05-20 1375 /* Work out if we support NX */
ae897fda4f507e Jan Beulich 2021-05-20 1376 get_cpu_cap(&boot_cpu_data);
ae897fda4f507e Jan Beulich 2021-05-20 1377 x86_configure_nx();
ae897fda4f507e Jan Beulich 2021-05-20 1378
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1379 /*
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1380 * Set up kernel GDT and segment registers, mainly so that
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1381 * -fstack-protector code can be executed.
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1382 */
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1383 xen_setup_gdt(0);
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1384
405c018a25fe46 M. Vefa Bicakci 2018-07-24 1385 /* Determine virtual and physical address sizes */
405c018a25fe46 M. Vefa Bicakci 2018-07-24 1386 get_cpu_address_sizes(&boot_cpu_data);
405c018a25fe46 M. Vefa Bicakci 2018-07-24 1387
42b3a4cb5609de Juergen Gross 2017-11-24 1388 /* Let's presume PV guests always boot on vCPU with id 0. */
42b3a4cb5609de Juergen Gross 2017-11-24 1389 per_cpu(xen_vcpu_id, 0) = 0;
42b3a4cb5609de Juergen Gross 2017-11-24 1390
42b3a4cb5609de Juergen Gross 2017-11-24 1391 idt_setup_early_handler();
42b3a4cb5609de Juergen Gross 2017-11-24 1392
0808e80cb760de Juergen Gross 2017-04-13 1393 xen_init_capabilities();
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1394
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1395 /*
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1396 * set up the basic apic ops.
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1397 */
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1398 xen_init_apic();
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1399
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1400 machine_ops = xen_machine_ops;
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1401
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1402 /*
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1403 * The only reliable way to retain the initial address of the
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1404 * percpu gdt_page is to remember it here, so we can go and
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1405 * mark it RW later, when the initial percpu area is freed.
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1406 */
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 @1407 xen_initial_gdt = &per_cpu(gdt_page, 0);
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1408
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1409 xen_smp_init();
e1dab14cf68d1e Vitaly Kuznetsov 2017-03-14 1410
:::::: The code at line 1407 was first introduced by commit
:::::: e1dab14cf68d1e03950135969af3faf322f0db04 x86/xen: split off enlighten_pv.c
:::::: TO: Vitaly Kuznetsov <vkuznets@...hat.com>
:::::: CC: Juergen Gross <jgross@...e.com>
--
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