Re: [PATCH v4 1/3] powerpc/book3s64/radix/tlb: tlbie primitives for process-scoped invalidations from guests

[kernel test robot <lkp@intel.com>]

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Hi Bharata,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kvm/linux-next]
[also build test ERROR on v5.11]
[cannot apply to powerpc/next next-20210212]
[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/Bharata-B-Rao/Support-for-H_RPT_INVALIDATE-in-PowerPC-KVM/20210215-143815
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: powerpc64-randconfig-r005-20210215 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc64 cross compiling tool for clang build
        # apt-get install binutils-powerpc64-linux-gnu
        # https://github.com/0day-ci/linux/commit/2a2c1320dc2bc67ec962721c39e7639cc1abfa9d
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Bharata-B-Rao/Support-for-H_RPT_INVALIDATE-in-PowerPC-KVM/20210215-143815
        git checkout 2a2c1320dc2bc67ec962721c39e7639cc1abfa9d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 

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 >>):

>> arch/powerpc/mm/book3s64/radix_tlb.c:399:20: error: unused function '_tlbie_pid_lpid' [-Werror,-Wunused-function]
   static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid,
                      ^
>> arch/powerpc/mm/book3s64/radix_tlb.c:643:20: error: unused function '_tlbie_va_range_lpid' [-Werror,-Wunused-function]
   static inline void _tlbie_va_range_lpid(unsigned long start, unsigned long end,
                      ^
   2 errors generated.


vim +/_tlbie_pid_lpid +399 arch/powerpc/mm/book3s64/radix_tlb.c

   398	
 > 399	static inline void _tlbie_pid_lpid(unsigned long pid, unsigned long lpid,
   400					   unsigned long ric)
   401	{
   402		asm volatile("ptesync" : : : "memory");
   403	
   404		/*
   405		 * Workaround the fact that the "ric" argument to __tlbie_pid
   406		 * must be a compile-time contraint to match the "i" constraint
   407		 * in the asm statement.
   408		 */
   409		switch (ric) {
   410		case RIC_FLUSH_TLB:
   411			__tlbie_pid_lpid(pid, lpid, RIC_FLUSH_TLB);
   412			fixup_tlbie_pid_lpid(pid, lpid);
   413			break;
   414		case RIC_FLUSH_PWC:
   415			__tlbie_pid_lpid(pid, lpid, RIC_FLUSH_PWC);
   416			break;
   417		case RIC_FLUSH_ALL:
   418		default:
   419			__tlbie_pid_lpid(pid, lpid, RIC_FLUSH_ALL);
   420			fixup_tlbie_pid_lpid(pid, lpid);
   421		}
   422		asm volatile("eieio; tlbsync; ptesync" : : : "memory");
   423	}
   424	struct tlbiel_pid {
   425		unsigned long pid;
   426		unsigned long ric;
   427	};
   428	

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

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