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Message-ID: <202404051917.mk4DoDkI-lkp@intel.com>
Date: Fri, 5 Apr 2024 19:36:17 +0800
From: kernel test robot <lkp@...el.com>
To: Ashish Kalra <Ashish.Kalra@....com>, tglx@...utronix.de,
mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
x86@...nel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev, rafael@...nel.org,
adrian.hunter@...el.com, sathyanarayanan.kuppuswamy@...ux.intel.com,
jun.nakajima@...el.com, rick.p.edgecombe@...el.com,
thomas.lendacky@....com, michael.roth@....com, seanjc@...gle.com,
kai.huang@...el.com, bhe@...hat.com,
kirill.shutemov@...ux.intel.com, bdas@...hat.com,
vkuznets@...hat.com, dionnaglaze@...gle.com, anisinha@...hat.com,
jroedel@...e.de, ardb@...nel.org, kexec@...ts.infradead.org,
linux-coco@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 4/4] x86/snp: Convert shared memory back to private on
kexec
Hi Ashish,
kernel test robot noticed the following build warnings:
[auto build test WARNING on efi/next]
[also build test WARNING on linus/master v6.9-rc2 next-20240405]
[cannot apply to tip/x86/core tip/master tip/x86/mm tip/auto-latest]
[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/Ashish-Kalra/efi-x86-skip-efi_arch_mem_reserve-in-case-of-kexec/20240405-071346
base: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next
patch link: https://lore.kernel.org/r/41db1ebbe58fb082dbe848f1c666ed23e83f1752.1712270976.git.ashish.kalra%40amd.com
patch subject: [PATCH v3 4/4] x86/snp: Convert shared memory back to private on kexec
config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20240405/202404051917.mk4DoDkI-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240405/202404051917.mk4DoDkI-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/202404051917.mk4DoDkI-lkp@intel.com/
All warnings (new ones prefixed by >>):
arch/x86/kernel/sev.c:1006:14: error: call to undeclared function 'pte_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
1006 | if (pte && pte_decrypted(*pte) && !pte_none(*pte)) {
| ^
arch/x86/kernel/sev.c:1035:16: error: call to undeclared function 'pte_decrypted'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
1035 | if (!pte || !pte_decrypted(*pte) || pte_none(*pte))
| ^
>> arch/x86/kernel/sev.c:1025:16: warning: variable 'size' set but not used [-Wunused-but-set-variable]
1025 | unsigned long size;
| ^
arch/x86/kernel/sev.c:1056:7: error: call to undeclared function 'stop_memory_enc_conversion'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
1056 | if (!stop_memory_enc_conversion(wait_for_lock))
| ^
1 warning and 3 errors generated.
vim +/size +1025 arch/x86/kernel/sev.c
1021
1022 static void unshare_all_bss_decrypted_memory(void)
1023 {
1024 unsigned long vaddr, vaddr_end;
> 1025 unsigned long size;
1026 unsigned int level;
1027 unsigned int npages;
1028 pte_t *pte;
1029
1030 vaddr = (unsigned long)__start_bss_decrypted;
1031 vaddr_end = (unsigned long)__start_bss_decrypted_unused;
1032 npages = (vaddr_end - vaddr) >> PAGE_SHIFT;
1033 for (; vaddr < vaddr_end; vaddr += PAGE_SIZE) {
1034 pte = lookup_address(vaddr, &level);
1035 if (!pte || !pte_decrypted(*pte) || pte_none(*pte))
1036 continue;
1037
1038 size = page_level_size(level);
1039 set_pte_enc(pte, level, (void *)vaddr);
1040 }
1041 vaddr = (unsigned long)__start_bss_decrypted;
1042 snp_set_memory_private(vaddr, npages);
1043 }
1044
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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