Hi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/x86/core]
[also build test ERROR on pm/linux-next v5.10-rc2 next-20201103]
[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]

url:    https://github.com/0day-ci/linux/commits/yaoaili126-163-com/Dump-cper-error-table-in-mce_panic/20201104-150937
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 238c91115cd05c71447ea071624a4c9fe661f970
config: x86_64-randconfig-s021-20201104 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-76-gf680124b-dirty
        # https://github.com/0day-ci/linux/commit/b11831c841cb8046a9e01300f5d91985c293e045
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review yaoaili126-163-com/Dump-cper-error-table-in-mce_panic/20201104-150937
        git checkout b11831c841cb8046a9e01300f5d91985c293e045
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   ld: arch/x86/kernel/cpu/mce/core.o: in function `mce_panic':
>> arch/x86/kernel/cpu/mce/core.c:346: undefined reference to `ghes_in_mce_cper_entry_check'

vim +346 arch/x86/kernel/cpu/mce/core.c

   297	
   298	static void mce_panic(const char *msg, struct mce *final, char *exp)
   299	{
   300		int apei_err = 0;
   301		struct llist_node *pending;
   302		struct mce_evt_llist *l;
   303	
   304		if (!fake_panic) {
   305			/*
   306			 * Make sure only one CPU runs in machine check panic
   307			 */
   308			if (atomic_inc_return(&mce_panicked) > 1)
   309				wait_for_panic();
   310			barrier();
   311	
   312			bust_spinlocks(1);
   313			console_verbose();
   314		} else {
   315			/* Don't log too much for fake panic */
   316			if (atomic_inc_return(&mce_fake_panicked) > 1)
   317				return;
   318		}
   319		pending = mce_gen_pool_prepare_records();
   320		/* First print corrected ones that are still unlogged */
   321		llist_for_each_entry(l, pending, llnode) {
   322			struct mce *m = &l->mce;
   323			if (!(m->status & MCI_STATUS_UC)) {
   324				print_mce(m);
   325				if (!apei_err)
   326					apei_err = apei_write_mce(m);
   327			}
   328		}
   329		/* Now print uncorrected but with the final one last */
   330		llist_for_each_entry(l, pending, llnode) {
   331			struct mce *m = &l->mce;
   332			if (!(m->status & MCI_STATUS_UC))
   333				continue;
   334			if (!final || mce_cmp(m, final)) {
   335				print_mce(m);
   336				if (!apei_err)
   337					apei_err = apei_write_mce(m);
   338			}
   339		}
   340		if (final) {
   341			print_mce(final);
   342			if (!apei_err)
   343				apei_err = apei_write_mce(final);
   344		}
   345		/* Print possible additional cper error info, get cper cleared */
 > 346		ghes_in_mce_cper_entry_check();
   347		if (cpu_missing)
   348			pr_emerg(HW_ERR "Some CPUs didn't answer in synchronization\n");
   349		if (exp)
   350			pr_emerg(HW_ERR "Machine check: %s\n", exp);
   351		if (!fake_panic) {
   352			if (panic_timeout == 0)
   353				panic_timeout = mca_cfg.panic_timeout;
   354			panic(msg);
   355		} else
   356			pr_emerg(HW_ERR "Fake kernel panic: %s\n", msg);
   357	}
   358	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org