Hi Juergen, kernel test robot noticed the following build errors:
[auto build test ERROR on tip/x86/core] [also build test ERROR on tip/sched/core kvm/queue kvm/next linus/master v6.18-rc7] [cannot apply to kvm/linux-next next-20251127] [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/Juergen-Gross/x86-paravirt-Remove-not-needed-includes-of-paravirt-h/20251127-152054 base: tip/x86/core patch link: https://lore.kernel.org/r/20251127070844.21919-22-jgross%40suse.com patch subject: [PATCH v4 21/21] x86/pvlocks: Move paravirt spinlock functions into own header config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20251127/[email protected]/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251127/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All errors (new ones prefixed by >>): >> arch/x86/kernel/alternative.c:2373:2: error: call to undeclared function >> 'paravirt_set_cap'; ISO C99 and later do not support implicit function >> declarations [-Wimplicit-function-declaration] 2373 | paravirt_set_cap(); | ^ arch/x86/kernel/alternative.c:2373:2: note: did you mean 'paravirt_ret0'? arch/x86/include/asm/paravirt-base.h:23:15: note: 'paravirt_ret0' declared here 23 | unsigned long paravirt_ret0(void); | ^ 1 error generated. vim +/paravirt_set_cap +2373 arch/x86/kernel/alternative.c 270a69c4485d7d arch/x86/kernel/alternative.c Peter Zijlstra 2023-02-08 2344 9a0b5817ad97bb arch/i386/kernel/alternative.c Gerd Hoffmann 2006-03-23 2345 void __init alternative_instructions(void) 9a0b5817ad97bb arch/i386/kernel/alternative.c Gerd Hoffmann 2006-03-23 2346 { ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2347 u64 ibt; ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2348 7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2349 int3_selftest(); 7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2350 7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2351 /* 7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2352 * The patching is not fully atomic, so try to avoid local 7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2353 * interruptions that might execute the to be patched code. 7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2354 * Other CPUs are not running. 7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2355 */ 8f4e956b313dcc arch/i386/kernel/alternative.c Andi Kleen 2007-07-22 2356 stop_nmi(); 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2357 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2358 /* 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2359 * Don't stop machine check exceptions while patching. 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2360 * MCEs only happen when something got corrupted and in this 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2361 * case we must do something about the corruption. 32b1cbe380417f arch/x86/kernel/alternative.c Marco Ammon 2019-09-02 2362 * Ignoring it is worse than an unlikely patching race. 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2363 * Also machine checks tend to be broadcast and if one CPU 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2364 * goes into machine check the others follow quickly, so we don't 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2365 * expect a machine check to cause undue problems during to code 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2366 * patching. 123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2367 */ 8f4e956b313dcc arch/i386/kernel/alternative.c Andi Kleen 2007-07-22 2368 4e6292114c7412 arch/x86/kernel/alternative.c Juergen Gross 2021-03-11 2369 /* f7af6977621a41 arch/x86/kernel/alternative.c Juergen Gross 2023-12-10 2370 * Make sure to set (artificial) features depending on used paravirt f7af6977621a41 arch/x86/kernel/alternative.c Juergen Gross 2023-12-10 2371 * functions which can later influence alternative patching. 4e6292114c7412 arch/x86/kernel/alternative.c Juergen Gross 2021-03-11 2372 */ 4e6292114c7412 arch/x86/kernel/alternative.c Juergen Gross 2021-03-11 @2373 paravirt_set_cap(); 4e6292114c7412 arch/x86/kernel/alternative.c Juergen Gross 2021-03-11 2374 ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2375 /* Keep CET-IBT disabled until caller/callee are patched */ ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2376 ibt = ibt_save(/*disable*/ true); ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2377 931ab63664f02b arch/x86/kernel/alternative.c Peter Zijlstra 2022-10-27 2378 __apply_fineibt(__retpoline_sites, __retpoline_sites_end, 1d7e707af44613 arch/x86/kernel/alternative.c Mike Rapoport (Microsoft 2025-01-26 2379) __cfi_sites, __cfi_sites_end, true); 026211c40b0554 arch/x86/kernel/alternative.c Kees Cook 2025-09-03 2380 cfi_debug = false; 931ab63664f02b arch/x86/kernel/alternative.c Peter Zijlstra 2022-10-27 2381 7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2382 /* 7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2383 * Rewrite the retpolines, must be done before alternatives since 7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2384 * those can rewrite the retpoline thunks. 7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2385 */ 1d7e707af44613 arch/x86/kernel/alternative.c Mike Rapoport (Microsoft 2025-01-26 2386) apply_retpolines(__retpoline_sites, __retpoline_sites_end); 1d7e707af44613 arch/x86/kernel/alternative.c Mike Rapoport (Microsoft 2025-01-26 2387) apply_returns(__return_sites, __return_sites_end); 7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2388 a82b26451de126 arch/x86/kernel/alternative.c Peter Zijlstra (Intel 2025-06-03 2389) its_fini_core(); a82b26451de126 arch/x86/kernel/alternative.c Peter Zijlstra (Intel 2025-06-03 2390) e81dc127ef6988 arch/x86/kernel/alternative.c Thomas Gleixner 2022-09-15 2391 /* ab9fea59487d8b arch/x86/kernel/alternative.c Peter Zijlstra 2025-02-07 2392 * Adjust all CALL instructions to point to func()-10, including ab9fea59487d8b arch/x86/kernel/alternative.c Peter Zijlstra 2025-02-07 2393 * those in .altinstr_replacement. e81dc127ef6988 arch/x86/kernel/alternative.c Thomas Gleixner 2022-09-15 2394 */ e81dc127ef6988 arch/x86/kernel/alternative.c Thomas Gleixner 2022-09-15 2395 callthunks_patch_builtin_calls(); e81dc127ef6988 arch/x86/kernel/alternative.c Thomas Gleixner 2022-09-15 2396 ab9fea59487d8b arch/x86/kernel/alternative.c Peter Zijlstra 2025-02-07 2397 apply_alternatives(__alt_instructions, __alt_instructions_end); ab9fea59487d8b arch/x86/kernel/alternative.c Peter Zijlstra 2025-02-07 2398 be0fffa5ca894a arch/x86/kernel/alternative.c Peter Zijlstra 2023-06-22 2399 /* be0fffa5ca894a arch/x86/kernel/alternative.c Peter Zijlstra 2023-06-22 2400 * Seal all functions that do not have their address taken. be0fffa5ca894a arch/x86/kernel/alternative.c Peter Zijlstra 2023-06-22 2401 */ 1d7e707af44613 arch/x86/kernel/alternative.c Mike Rapoport (Microsoft 2025-01-26 2402) apply_seal_endbr(__ibt_endbr_seal, __ibt_endbr_seal_end); ed53a0d971926e arch/x86/kernel/alternative.c Peter Zijlstra 2022-03-08 2403 ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2404 ibt_restore(ibt); ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2405 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
