Hi Steven, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [cannot apply to v5.3-rc6 next-20190830] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Steven-Price/arm64-Stolen-time-support/20190901-185152 config: i386-randconfig-a002-201935 (attached as .config) compiler: gcc-7 (Debian 7.4.0-11) 7.4.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): In file included from include/kvm/arm_hypercalls.h:7:0, from <command-line>:0: >> arch/x86/include/asm/kvm_emulate.h:349:22: error: 'NR_VCPU_REGS' undeclared here (not in a function) unsigned long _regs[NR_VCPU_REGS]; ^~~~~~~~~~~~ In file included from <command-line>:0:0: >> include/kvm/arm_hypercalls.h:9:33: warning: 'struct kvm_vcpu' declared inside parameter list will not be visible outside of this definition or declaration int kvm_hvc_call_handler(struct kvm_vcpu *vcpu); ^~~~~~~~ include/kvm/arm_hypercalls.h:11:45: warning: 'struct kvm_vcpu' declared inside parameter list will not be visible outside of this definition or declaration static inline u32 smccc_get_function(struct kvm_vcpu *vcpu) ^~~~~~~~ include/kvm/arm_hypercalls.h: In function 'smccc_get_function': >> include/kvm/arm_hypercalls.h:13:9: error: implicit declaration of function 'vcpu_get_reg' [-Werror=implicit-function-declaration] return vcpu_get_reg(vcpu, 0); ^~~~~~~~~~~~ include/kvm/arm_hypercalls.h: At top level: include/kvm/arm_hypercalls.h:16:51: warning: 'struct kvm_vcpu' declared inside parameter list will not be visible outside of this definition or declaration static inline unsigned long smccc_get_arg1(struct kvm_vcpu *vcpu) ^~~~~~~~ include/kvm/arm_hypercalls.h:21:51: warning: 'struct kvm_vcpu' declared inside parameter list will not be visible outside of this definition or declaration static inline unsigned long smccc_get_arg2(struct kvm_vcpu *vcpu) ^~~~~~~~ include/kvm/arm_hypercalls.h:26:51: warning: 'struct kvm_vcpu' declared inside parameter list will not be visible outside of this definition or declaration static inline unsigned long smccc_get_arg3(struct kvm_vcpu *vcpu) ^~~~~~~~ include/kvm/arm_hypercalls.h:31:44: warning: 'struct kvm_vcpu' declared inside parameter list will not be visible outside of this definition or declaration static inline void smccc_set_retval(struct kvm_vcpu *vcpu, ^~~~~~~~ include/kvm/arm_hypercalls.h: In function 'smccc_set_retval': >> include/kvm/arm_hypercalls.h:37:2: error: implicit declaration of function 'vcpu_set_reg'; did you mean 'smccc_set_retval'? [-Werror=implicit-function-declaration] vcpu_set_reg(vcpu, 0, a0); ^~~~~~~~~~~~ smccc_set_retval cc1: some warnings being treated as errors vim +/NR_VCPU_REGS +349 arch/x86/include/asm/kvm_emulate.h a584539b24b87d arch/x86/include/asm/kvm_emulate.h Paolo Bonzini 2015-04-01 290 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 291 struct x86_emulate_ctxt { 0225fb509d51fc arch/x86/include/asm/kvm_emulate.h Mathias Krause 2012-08-30 292 const struct x86_emulate_ops *ops; 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 293 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 294 /* Register state before/after emulation. */ 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 295 unsigned long eflags; 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 296 unsigned long eip; /* eip before instruction emulation */ 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 297 /* Emulated execution mode, represented by an X86EMUL_MODE value. */ 9d1b39a967871b arch/x86/include/asm/kvm_emulate.h Gleb Natapov 2012-09-03 298 enum x86emul_mode mode; 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 299 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 300 /* interruptibility state, as a result of execution of STI or MOV SS */ 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 301 int interruptibility; 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 302 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 303 bool perm_ok; /* do not check permissions if true */ b51e974fcdabd0 arch/x86/include/asm/kvm_emulate.h Borislav Petkov 2013-09-22 304 bool ud; /* inject an #UD if host doesn't support insn */ c8401dda2f0a00 arch/x86/include/asm/kvm_emulate.h Paolo Bonzini 2017-06-07 305 bool tf; /* TF value before instruction (after for syscall/sysret) */ 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 306 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 307 bool have_exception; 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 308 struct x86_exception exception; 9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 309 1ce19dc16ce913 arch/x86/include/asm/kvm_emulate.h Borislav Petkov 2013-09-22 310 /* 1ce19dc16ce913 arch/x86/include/asm/kvm_emulate.h Borislav Petkov 2013-09-22 311 * decode cache 1ce19dc16ce913 arch/x86/include/asm/kvm_emulate.h Borislav Petkov 2013-09-22 312 */ 1ce19dc16ce913 arch/x86/include/asm/kvm_emulate.h Borislav Petkov 2013-09-22 313 1ce19dc16ce913 arch/x86/include/asm/kvm_emulate.h Borislav Petkov 2013-09-22 314 /* current opcode length in bytes */ 1ce19dc16ce913 arch/x86/include/asm/kvm_emulate.h Borislav Petkov 2013-09-22 315 u8 opcode_len; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 316 u8 b; c4f035c60dad45 arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-04-04 317 u8 intercept; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 318 u8 op_bytes; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 319 u8 ad_bytes; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 320 struct operand src; 0dc8d10f7d848b arch/x86/include/asm/kvm_x86_emulate.h Guillaume Thouvenin 2008-12-04 321 struct operand src2; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 322 struct operand dst; ef65c88912cafe arch/x86/include/asm/kvm_emulate.h Avi Kivity 2010-07-29 323 int (*execute)(struct x86_emulate_ctxt *ctxt); d09beabd7cd4cf arch/x86/include/asm/kvm_emulate.h Joerg Roedel 2011-04-04 324 int (*check_perm)(struct x86_emulate_ctxt *ctxt); 41061cdb98a0be arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 325 /* 41061cdb98a0be arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 326 * The following six fields are cleared together, 41061cdb98a0be arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 327 * the rest are initialized unconditionally in x86_decode_insn 41061cdb98a0be arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 328 * or elsewhere 41061cdb98a0be arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 329 */ c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 330 bool rip_relative; c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 331 u8 rex_prefix; c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 332 u8 lock_prefix; c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 333 u8 rep_prefix; c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 334 /* bitmaps of registers in _regs[] that can be read */ c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 335 u32 regs_valid; c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 336 /* bitmaps of registers in _regs[] that have been written */ c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 337 u32 regs_dirty; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 338 /* modrm */ e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 339 u8 modrm; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 340 u8 modrm_mod; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 341 u8 modrm_reg; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 342 u8 modrm_rm; 09ee57cdae3156 arch/x86/include/asm/kvm_emulate.h Avi Kivity 2010-08-01 343 u8 modrm_seg; 573e80fe04db1a arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 344 u8 seg_override; c44b4c6ab80eef arch/x86/include/asm/kvm_emulate.h Bandan Das 2014-04-16 345 u64 d; 36dd9bb5ce32bc arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-06-01 346 unsigned long _eip; cbd27ee783f1e5 arch/x86/include/asm/kvm_emulate.h Avi Kivity 2012-06-10 347 struct operand memop; b5c9ff731f3cee arch/x86/include/asm/kvm_emulate.h Takuya Yoshikawa 2011-05-25 348 /* Fields above regs are cleared together. */ dd856efafe6097 arch/x86/include/asm/kvm_emulate.h Avi Kivity 2012-08-27 @349 unsigned long _regs[NR_VCPU_REGS]; f09ed83e211d25 arch/x86/include/asm/kvm_emulate.h Avi Kivity 2011-09-13 350 struct operand *memopp; 6226686954c4cc drivers/kvm/x86_emulate.h Avi Kivity 2007-11-20 351 struct fetch_cache fetch; 7b262e90fc20a4 arch/x86/include/asm/kvm_emulate.h Gleb Natapov 2010-03-18 352 struct read_cache io_read; 9de41573675cba arch/x86/include/asm/kvm_emulate.h Gleb Natapov 2010-04-28 353 struct read_cache mem_read; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 354 }; e4e03deda83b1f drivers/kvm/x86_emulate.h Laurent Vivier 2007-09-18 355 :::::: The code at line 349 was first introduced by commit :::::: dd856efafe6097a5c9104725c2bca74430423db8 KVM: x86 emulator: access GPRs on demand :::::: TO: Avi Kivity <avi@xxxxxxxxxx> :::::: CC: Marcelo Tosatti <mtosatti@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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