* Re: [PATCH v2 21/21] x86/pvlocks: Move paravirt spinlock functions into own header
[not found] <20250917145220.31064-22-jgross@suse.com>
@ 2025-09-18 2:45 ` kernel test robot
2025-09-18 5:56 ` Juergen Gross
2025-09-18 5:38 ` kernel test robot
1 sibling, 1 reply; 3+ messages in thread
From: kernel test robot @ 2025-09-18 2:45 UTC (permalink / raw)
To: Juergen Gross, linux-kernel, x86, linux-hyperv, virtualization,
kvm
Cc: llvm, oe-kbuild-all, Juergen Gross, K. Y. Srinivasan,
Haiyang Zhang, Wei Liu, Dexuan Cui, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, Dave Hansen, H. Peter Anvin, Ajay Kaher,
Alexey Makhalov, Broadcom internal kernel review list,
Paolo Bonzini, Vitaly Kuznetsov, Boris Ostrovsky, Josh Poimboeuf,
xen-devel
Hi Juergen,
kernel test robot noticed the following build warnings:
[auto build test WARNING on tip/sched/core]
[also build test WARNING on kvm/queue kvm/next linus/master v6.17-rc6 next-20250917]
[cannot apply to tip/x86/core kvm/linux-next]
[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/20250917-230321
base: tip/sched/core
patch link: https://lore.kernel.org/r/20250917145220.31064-22-jgross%40suse.com
patch subject: [PATCH v2 21/21] x86/pvlocks: Move paravirt spinlock functions into own header
config: x86_64-randconfig-003-20250918 (https://download.01.org/0day-ci/archive/20250918/202509181008.MoLd2u4e-lkp@intel.com/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/20250918/202509181008.MoLd2u4e-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/202509181008.MoLd2u4e-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> arch/x86/kernel/paravirt-spinlocks.c:13:13: warning: no previous prototype for function 'native_pv_lock_init' [-Wmissing-prototypes]
13 | void __init native_pv_lock_init(void)
| ^
arch/x86/kernel/paravirt-spinlocks.c:13:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
13 | void __init native_pv_lock_init(void)
| ^
| static
1 warning generated.
vim +/native_pv_lock_init +13 arch/x86/kernel/paravirt-spinlocks.c
12
> 13 void __init native_pv_lock_init(void)
14 {
15 if (boot_cpu_has(X86_FEATURE_HYPERVISOR))
16 static_branch_enable(&virt_spin_lock_key);
17 }
18
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH v2 21/21] x86/pvlocks: Move paravirt spinlock functions into own header
[not found] <20250917145220.31064-22-jgross@suse.com>
2025-09-18 2:45 ` [PATCH v2 21/21] x86/pvlocks: Move paravirt spinlock functions into own header kernel test robot
@ 2025-09-18 5:38 ` kernel test robot
1 sibling, 0 replies; 3+ messages in thread
From: kernel test robot @ 2025-09-18 5:38 UTC (permalink / raw)
To: Juergen Gross, linux-kernel, x86, linux-hyperv, virtualization,
kvm
Cc: llvm, oe-kbuild-all, Juergen Gross, K. Y. Srinivasan,
Haiyang Zhang, Wei Liu, Dexuan Cui, Thomas Gleixner, Ingo Molnar,
Borislav Petkov, Dave Hansen, H. Peter Anvin, Ajay Kaher,
Alexey Makhalov, Broadcom internal kernel review list,
Paolo Bonzini, Vitaly Kuznetsov, Boris Ostrovsky, Josh Poimboeuf,
Peter Zijlstra, xen-devel
Hi Juergen,
kernel test robot noticed the following build errors:
[auto build test ERROR on tip/sched/core]
[also build test ERROR on kvm/queue kvm/next linus/master v6.17-rc6 next-20250917]
[cannot apply to tip/x86/core kvm/linux-next]
[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/20250917-230321
base: tip/sched/core
patch link: https://lore.kernel.org/r/20250917145220.31064-22-jgross%40suse.com
patch subject: [PATCH v2 21/21] x86/pvlocks: Move paravirt spinlock functions into own header
config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20250918/202509181317.YubLCpdh-lkp@intel.com/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/20250918/202509181317.YubLCpdh-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/202509181317.YubLCpdh-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/x86/kernel/alternative.c:4:
In file included from include/linux/mmu_context.h:5:
arch/x86/include/asm/mmu_context.h:225:2: error: call to undeclared function 'paravirt_enter_mmap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
225 | paravirt_enter_mmap(mm);
| ^
arch/x86/include/asm/mmu_context.h:232:2: error: call to undeclared function 'paravirt_arch_exit_mmap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
232 | paravirt_arch_exit_mmap(mm);
| ^
arch/x86/include/asm/mmu_context.h:232:2: note: did you mean 'ldt_arch_exit_mmap'?
arch/x86/include/asm/mmu_context.h:61:6: note: 'ldt_arch_exit_mmap' declared here
61 | void ldt_arch_exit_mmap(struct mm_struct *mm);
| ^
In file included from arch/x86/kernel/alternative.c:5:
In file included from include/linux/perf_event.h:53:
In file included from include/linux/security.h:35:
In file included from include/linux/bpf.h:33:
In file included from arch/x86/include/asm/rqspinlock.h:5:
arch/x86/include/asm/paravirt.h:570:20: error: static declaration of 'paravirt_enter_mmap' follows non-static declaration
570 | static inline void paravirt_enter_mmap(struct mm_struct *mm)
| ^
arch/x86/include/asm/mmu_context.h:225:2: note: previous implicit declaration is here
225 | paravirt_enter_mmap(mm);
| ^
In file included from arch/x86/kernel/alternative.c:5:
In file included from include/linux/perf_event.h:53:
In file included from include/linux/security.h:35:
In file included from include/linux/bpf.h:33:
In file included from arch/x86/include/asm/rqspinlock.h:5:
arch/x86/include/asm/paravirt.h:576:20: error: static declaration of 'paravirt_arch_exit_mmap' follows non-static declaration
576 | static inline void paravirt_arch_exit_mmap(struct mm_struct *mm)
| ^
arch/x86/include/asm/mmu_context.h:232:2: note: previous implicit declaration is here
232 | paravirt_arch_exit_mmap(mm);
| ^
>> arch/x86/kernel/alternative.c:2317:2: error: call to undeclared function 'paravirt_set_cap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2317 | paravirt_set_cap();
| ^
arch/x86/kernel/alternative.c:2317:2: 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);
| ^
5 errors generated.
vim +/paravirt_set_cap +2317 arch/x86/kernel/alternative.c
270a69c4485d7d arch/x86/kernel/alternative.c Peter Zijlstra 2023-02-08 2288
9a0b5817ad97bb arch/i386/kernel/alternative.c Gerd Hoffmann 2006-03-23 2289 void __init alternative_instructions(void)
9a0b5817ad97bb arch/i386/kernel/alternative.c Gerd Hoffmann 2006-03-23 2290 {
ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2291 u64 ibt;
ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2292
7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2293 int3_selftest();
7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2294
7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2295 /*
7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2296 * The patching is not fully atomic, so try to avoid local
7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2297 * interruptions that might execute the to be patched code.
7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2298 * Other CPUs are not running.
7457c0da024b18 arch/x86/kernel/alternative.c Peter Zijlstra 2019-05-03 2299 */
8f4e956b313dcc arch/i386/kernel/alternative.c Andi Kleen 2007-07-22 2300 stop_nmi();
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2301
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2302 /*
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2303 * Don't stop machine check exceptions while patching.
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2304 * MCEs only happen when something got corrupted and in this
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2305 * case we must do something about the corruption.
32b1cbe380417f arch/x86/kernel/alternative.c Marco Ammon 2019-09-02 2306 * Ignoring it is worse than an unlikely patching race.
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2307 * Also machine checks tend to be broadcast and if one CPU
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2308 * goes into machine check the others follow quickly, so we don't
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2309 * expect a machine check to cause undue problems during to code
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2310 * patching.
123aa76ec0cab5 arch/x86/kernel/alternative.c Andi Kleen 2009-02-12 2311 */
8f4e956b313dcc arch/i386/kernel/alternative.c Andi Kleen 2007-07-22 2312
4e6292114c7412 arch/x86/kernel/alternative.c Juergen Gross 2021-03-11 2313 /*
f7af6977621a41 arch/x86/kernel/alternative.c Juergen Gross 2023-12-10 2314 * Make sure to set (artificial) features depending on used paravirt
f7af6977621a41 arch/x86/kernel/alternative.c Juergen Gross 2023-12-10 2315 * functions which can later influence alternative patching.
4e6292114c7412 arch/x86/kernel/alternative.c Juergen Gross 2021-03-11 2316 */
4e6292114c7412 arch/x86/kernel/alternative.c Juergen Gross 2021-03-11 @2317 paravirt_set_cap();
4e6292114c7412 arch/x86/kernel/alternative.c Juergen Gross 2021-03-11 2318
ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2319 /* Keep CET-IBT disabled until caller/callee are patched */
ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2320 ibt = ibt_save(/*disable*/ true);
ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2321
931ab63664f02b arch/x86/kernel/alternative.c Peter Zijlstra 2022-10-27 2322 __apply_fineibt(__retpoline_sites, __retpoline_sites_end,
1d7e707af44613 arch/x86/kernel/alternative.c Mike Rapoport (Microsoft 2025-01-26 2323) __cfi_sites, __cfi_sites_end, true);
931ab63664f02b arch/x86/kernel/alternative.c Peter Zijlstra 2022-10-27 2324
7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2325 /*
7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2326 * Rewrite the retpolines, must be done before alternatives since
7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2327 * those can rewrite the retpoline thunks.
7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2328 */
1d7e707af44613 arch/x86/kernel/alternative.c Mike Rapoport (Microsoft 2025-01-26 2329) apply_retpolines(__retpoline_sites, __retpoline_sites_end);
1d7e707af44613 arch/x86/kernel/alternative.c Mike Rapoport (Microsoft 2025-01-26 2330) apply_returns(__return_sites, __return_sites_end);
7508500900814d arch/x86/kernel/alternative.c Peter Zijlstra 2021-10-26 2331
a82b26451de126 arch/x86/kernel/alternative.c Peter Zijlstra (Intel 2025-06-03 2332) its_fini_core();
a82b26451de126 arch/x86/kernel/alternative.c Peter Zijlstra (Intel 2025-06-03 2333)
e81dc127ef6988 arch/x86/kernel/alternative.c Thomas Gleixner 2022-09-15 2334 /*
ab9fea59487d8b arch/x86/kernel/alternative.c Peter Zijlstra 2025-02-07 2335 * Adjust all CALL instructions to point to func()-10, including
ab9fea59487d8b arch/x86/kernel/alternative.c Peter Zijlstra 2025-02-07 2336 * those in .altinstr_replacement.
e81dc127ef6988 arch/x86/kernel/alternative.c Thomas Gleixner 2022-09-15 2337 */
e81dc127ef6988 arch/x86/kernel/alternative.c Thomas Gleixner 2022-09-15 2338 callthunks_patch_builtin_calls();
e81dc127ef6988 arch/x86/kernel/alternative.c Thomas Gleixner 2022-09-15 2339
ab9fea59487d8b arch/x86/kernel/alternative.c Peter Zijlstra 2025-02-07 2340 apply_alternatives(__alt_instructions, __alt_instructions_end);
ab9fea59487d8b arch/x86/kernel/alternative.c Peter Zijlstra 2025-02-07 2341
be0fffa5ca894a arch/x86/kernel/alternative.c Peter Zijlstra 2023-06-22 2342 /*
be0fffa5ca894a arch/x86/kernel/alternative.c Peter Zijlstra 2023-06-22 2343 * Seal all functions that do not have their address taken.
be0fffa5ca894a arch/x86/kernel/alternative.c Peter Zijlstra 2023-06-22 2344 */
1d7e707af44613 arch/x86/kernel/alternative.c Mike Rapoport (Microsoft 2025-01-26 2345) apply_seal_endbr(__ibt_endbr_seal, __ibt_endbr_seal_end);
ed53a0d971926e arch/x86/kernel/alternative.c Peter Zijlstra 2022-03-08 2346
ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2347 ibt_restore(ibt);
ebebe30794d38c arch/x86/kernel/alternative.c Pawan Gupta 2025-05-03 2348
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 3+ messages in thread