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SubjectRe: [PATCH] arm64: add the printing of tpidr_elx in __show_regs()
Hi Zhen,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on arm-perf/for-next/perf arm/for-next xilinx-xlnx/master soc/for-next kvmarm/next v5.17-rc8 next-20220315]
[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/Zhen-Lei/arm64-add-the-printing-of-tpidr_elx-in-__show_regs/20220315-191234
base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm64-randconfig-s032-20220313 (https://download.01.org/0day-ci/archive/20220316/202203160439.K5AL4Spr-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-dirty
# https://github.com/0day-ci/linux/commit/1a42e34104d70b0b90fe074ba96f2c04d33ffb23
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Zhen-Lei/arm64-add-the-printing-of-tpidr_elx-in-__show_regs/20220315-191234
git checkout 1a42e34104d70b0b90fe074ba96f2c04d33ffb23
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/

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


sparse warnings: (new ones prefixed by >>)
>> arch/arm64/kernel/process.c:220:17: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got void * @@
arch/arm64/kernel/process.c:220:17: sparse: expected void const [noderef] __percpu *__vpp_verify
arch/arm64/kernel/process.c:220:17: sparse: got void *
arch/arm64/kernel/process.c:437:1: sparse: sparse: symbol '__pcpu_scope___entry_task' was not declared. Should it be static?

vim +220 arch/arm64/kernel/process.c

200
201 void __show_regs(struct pt_regs *regs)
202 {
203 int i, top_reg;
204 u64 lr, sp;
205
206 if (compat_user_mode(regs)) {
207 lr = regs->compat_lr;
208 sp = regs->compat_sp;
209 top_reg = 12;
210 } else {
211 lr = regs->regs[30];
212 sp = regs->sp;
213 top_reg = 29;
214 }
215
216 show_regs_print_info(KERN_DEFAULT);
217 print_pstate(regs);
218
219 if (IS_ENABLED(CONFIG_SMP))
> 220 printk("tpidr : %016lx\n", this_cpu_ptr(NULL));
221
222 if (!user_mode(regs)) {
223 printk("pc : %pS\n", (void *)regs->pc);
224 printk("lr : %pS\n", (void *)ptrauth_strip_insn_pac(lr));
225 } else {
226 printk("pc : %016llx\n", regs->pc);
227 printk("lr : %016llx\n", lr);
228 }
229
230 printk("sp : %016llx\n", sp);
231
232 if (system_uses_irq_prio_masking())
233 printk("pmr_save: %08llx\n", regs->pmr_save);
234
235 i = top_reg;
236
237 while (i >= 0) {
238 printk("x%-2d: %016llx", i, regs->regs[i]);
239
240 while (i-- % 3)
241 pr_cont(" x%-2d: %016llx", i, regs->regs[i]);
242
243 pr_cont("\n");
244 }
245 }
246

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

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