From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B3D5B3B4EBD for ; Thu, 28 May 2026 09:45:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779961521; cv=none; b=bvH1SBGjZVQ2U7Q0n40aoglRBpsl1yJPyjxDWO0SmvKtj6og42qEfMm85nkGIRe1mbQoMdniguX2uZi3AutQQTzERiahc+I2WAVmK/frQv1lgn+uRcc/wOxcQnGq2jYji91yNU7AuURFbqLsAMf+DfwK7oHKCaV1om9+adwQWH4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779961521; c=relaxed/simple; bh=Ns+kkAR+hqqNKJDOgIZGSsgQVGWwfuFwMtfE1ObOqIo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=qdB3elw5pBETmrUnhjbZ95ar/arq2nRkvvKdzRLZhoWEx1JeSu2z5/MC0J15Gs9XzBdawmmmfalrjQoKA47xhyZCStQIGaof0SMSDrumX4VuO0uXC1LO0bvhwlQO9XheMlLIXhR5YRypxLc2e1ZGYo/1awMyqWr/kpKyr9vDVSA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Sce/SCtU; arc=none smtp.client-ip=198.175.65.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Sce/SCtU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1779961517; x=1811497517; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=Ns+kkAR+hqqNKJDOgIZGSsgQVGWwfuFwMtfE1ObOqIo=; b=Sce/SCtUPr69EZE4cX+iEKzaQ9LBIVKH4LW3bkhXIjZiwU9OUJehOINq 7Ru8L6jSRFCsM4zoPUwZ4zsRvp3/rrgM4+r0XhKrvH+zhQD2QkA5le8fJ otovD7Jjcrq7VGlsmhT+DAYSqSGXr6nAKyScpJMtdefHVVral4p8mgX5r PJRfQShwVZJDvQjAVkWm8iVhBML/8/jh4GLz/OUCXNbHscCw0aNJci1mT 4DzOSNeuGnQfTfqHhInHbIG9kpoTOwZVxmaPepD+H+IfH0z5q44muc4bE qwF9ytp4PasgUeSl625q/yUNJ5wyui1hjwNKDfw4YAl4AOLQRXdTXp/sJ Q==; X-CSE-ConnectionGUID: +MseA2o+TVaQtDx3b18jAg== X-CSE-MsgGUID: TtPrfvH1TlmKvCVpc7B3sQ== X-IronPort-AV: E=McAfee;i="6800,10657,11799"; a="91109293" X-IronPort-AV: E=Sophos;i="6.24,173,1774335600"; d="scan'208";a="91109293" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2026 02:45:12 -0700 X-CSE-ConnectionGUID: Wy6aTRKzTeeTOlrS3es8fA== X-CSE-MsgGUID: DWx78cg/R5Wh9KSanTx46g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,173,1774335600"; d="scan'208";a="246533641" Received: from lkp-server01.sh.intel.com (HELO f0d55cb201f0) ([10.239.97.150]) by orviesa003.jf.intel.com with ESMTP; 28 May 2026 02:45:09 -0700 Received: from kbuild by f0d55cb201f0 with local (Exim 4.98.2) (envelope-from ) id 1wSXIY-000000005nC-18BT; Thu, 28 May 2026 09:45:06 +0000 Date: Thu, 28 May 2026 17:44:48 +0800 From: kernel test robot To: Ashwin Gundarapu , tglx , mingo , bp , hpa , x86 , "dave.hansen" Cc: oe-kbuild-all@lists.linux.dev, linux-kernel Subject: Re: [PATCH v2] x86/vm86: Remove deprecated VM86 support Message-ID: <202605281749.4b3Hss7l-lkp@intel.com> References: <19e6858d9db.3a90532342003.5043853571553507480@zohomail.in> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <19e6858d9db.3a90532342003.5043853571553507480@zohomail.in> Hi Ashwin, kernel test robot noticed the following build errors: [auto build test ERROR on v7.1-rc5] [also build test ERROR on linus/master next-20260527] [cannot apply to tip/x86/core] [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/Ashwin-Gundarapu/x86-vm86-Remove-deprecated-VM86-support/20260527-153401 base: v7.1-rc5 patch link: https://lore.kernel.org/r/19e6858d9db.3a90532342003.5043853571553507480%40zohomail.in patch subject: [PATCH v2] x86/vm86: Remove deprecated VM86 support config: i386-allnoconfig (https://download.01.org/0day-ci/archive/20260528/202605281749.4b3Hss7l-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260528/202605281749.4b3Hss7l-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202605281749.4b3Hss7l-lkp@intel.com/ All errors (new ones prefixed by >>): arch/x86/lib/insn-eval.c: In function 'get_segment_selector': >> arch/x86/lib/insn-eval.c:380:40: error: invalid use of undefined type 'struct kernel_vm86_regs' 380 | return vm86regs->ds; | ^~ arch/x86/lib/insn-eval.c:382:40: error: invalid use of undefined type 'struct kernel_vm86_regs' 382 | return vm86regs->es; | ^~ arch/x86/lib/insn-eval.c:384:40: error: invalid use of undefined type 'struct kernel_vm86_regs' 384 | return vm86regs->fs; | ^~ arch/x86/lib/insn-eval.c:386:40: error: invalid use of undefined type 'struct kernel_vm86_regs' 386 | return vm86regs->gs; | ^~ -- arch/x86/kernel/process_32.c: In function 'release_thread': >> arch/x86/kernel/process_32.c:108:9: error: implicit declaration of function 'release_vm86_irqs' [-Wimplicit-function-declaration] 108 | release_vm86_irqs(dead_task); | ^~~~~~~~~~~~~~~~~ -- arch/x86/kernel/signal.c: In function 'handle_signal': >> arch/x86/kernel/signal.c:261:17: error: implicit declaration of function 'save_v86_state' [-Wimplicit-function-declaration] 261 | save_v86_state((struct kernel_vm86_regs *) regs, VM86_SIGNAL); | ^~~~~~~~~~~~~~ -- arch/x86/kernel/traps.c: In function 'do_trap_no_signal': >> arch/x86/kernel/traps.c:289:30: error: implicit declaration of function 'handle_vm86_trap' [-Wimplicit-function-declaration] 289 | if (!handle_vm86_trap((struct kernel_vm86_regs *) regs, | ^~~~~~~~~~~~~~~~ arch/x86/kernel/traps.c: In function '__exc_general_protection': >> arch/x86/kernel/traps.c:927:17: error: implicit declaration of function 'handle_vm86_fault'; did you mean 'handle_mm_fault'? [-Wimplicit-function-declaration] 927 | handle_vm86_fault((struct kernel_vm86_regs *) regs, error_code); | ^~~~~~~~~~~~~~~~~ | handle_mm_fault vim +380 arch/x86/lib/insn-eval.c 32d0b95300db03 Ricardo Neri 2017-10-27 323 32d0b95300db03 Ricardo Neri 2017-10-27 324 /** 32d0b95300db03 Ricardo Neri 2017-10-27 325 * get_segment_selector() - obtain segment selector 32d0b95300db03 Ricardo Neri 2017-10-27 326 * @regs: Register values as seen when entering kernel mode 32d0b95300db03 Ricardo Neri 2017-10-27 327 * @seg_reg_idx: Segment register index to use 32d0b95300db03 Ricardo Neri 2017-10-27 328 * 32d0b95300db03 Ricardo Neri 2017-10-27 329 * Obtain the segment selector from any of the CS, SS, DS, ES, FS, GS segment 32d0b95300db03 Ricardo Neri 2017-10-27 330 * registers. In CONFIG_X86_32, the segment is obtained from either pt_regs or 32d0b95300db03 Ricardo Neri 2017-10-27 331 * kernel_vm86_regs as applicable. In CONFIG_X86_64, CS and SS are obtained 32d0b95300db03 Ricardo Neri 2017-10-27 332 * from pt_regs. DS, ES, FS and GS are obtained by reading the actual CPU 32d0b95300db03 Ricardo Neri 2017-10-27 333 * registers. This done for only for completeness as in CONFIG_X86_64 segment 32d0b95300db03 Ricardo Neri 2017-10-27 334 * registers are ignored. 32d0b95300db03 Ricardo Neri 2017-10-27 335 * 32d0b95300db03 Ricardo Neri 2017-10-27 336 * Returns: 32d0b95300db03 Ricardo Neri 2017-10-27 337 * 32d0b95300db03 Ricardo Neri 2017-10-27 338 * Value of the segment selector, including null when running in 32d0b95300db03 Ricardo Neri 2017-10-27 339 * long mode. 32d0b95300db03 Ricardo Neri 2017-10-27 340 * 32d0b95300db03 Ricardo Neri 2017-10-27 341 * -EINVAL on error. 32d0b95300db03 Ricardo Neri 2017-10-27 342 */ 32d0b95300db03 Ricardo Neri 2017-10-27 343 static short get_segment_selector(struct pt_regs *regs, int seg_reg_idx) 32d0b95300db03 Ricardo Neri 2017-10-27 344 { 32d0b95300db03 Ricardo Neri 2017-10-27 345 unsigned short sel; 32d0b95300db03 Ricardo Neri 2017-10-27 346 3a24a60854d2ef Brian Gerst 2022-03-25 347 #ifdef CONFIG_X86_64 32d0b95300db03 Ricardo Neri 2017-10-27 348 switch (seg_reg_idx) { 32d0b95300db03 Ricardo Neri 2017-10-27 349 case INAT_SEG_REG_IGNORE: 32d0b95300db03 Ricardo Neri 2017-10-27 350 return 0; 32d0b95300db03 Ricardo Neri 2017-10-27 351 case INAT_SEG_REG_CS: 32d0b95300db03 Ricardo Neri 2017-10-27 352 return (unsigned short)(regs->cs & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 353 case INAT_SEG_REG_SS: 32d0b95300db03 Ricardo Neri 2017-10-27 354 return (unsigned short)(regs->ss & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 355 case INAT_SEG_REG_DS: 32d0b95300db03 Ricardo Neri 2017-10-27 356 savesegment(ds, sel); 32d0b95300db03 Ricardo Neri 2017-10-27 357 return sel; 32d0b95300db03 Ricardo Neri 2017-10-27 358 case INAT_SEG_REG_ES: 32d0b95300db03 Ricardo Neri 2017-10-27 359 savesegment(es, sel); 32d0b95300db03 Ricardo Neri 2017-10-27 360 return sel; 32d0b95300db03 Ricardo Neri 2017-10-27 361 case INAT_SEG_REG_FS: 32d0b95300db03 Ricardo Neri 2017-10-27 362 savesegment(fs, sel); 32d0b95300db03 Ricardo Neri 2017-10-27 363 return sel; 32d0b95300db03 Ricardo Neri 2017-10-27 364 case INAT_SEG_REG_GS: 32d0b95300db03 Ricardo Neri 2017-10-27 365 savesegment(gs, sel); 32d0b95300db03 Ricardo Neri 2017-10-27 366 return sel; 32d0b95300db03 Ricardo Neri 2017-10-27 367 default: 32d0b95300db03 Ricardo Neri 2017-10-27 368 return -EINVAL; 32d0b95300db03 Ricardo Neri 2017-10-27 369 } 32d0b95300db03 Ricardo Neri 2017-10-27 370 #else /* CONFIG_X86_32 */ 32d0b95300db03 Ricardo Neri 2017-10-27 371 struct kernel_vm86_regs *vm86regs = (struct kernel_vm86_regs *)regs; 32d0b95300db03 Ricardo Neri 2017-10-27 372 32d0b95300db03 Ricardo Neri 2017-10-27 373 if (v8086_mode(regs)) { 32d0b95300db03 Ricardo Neri 2017-10-27 374 switch (seg_reg_idx) { 32d0b95300db03 Ricardo Neri 2017-10-27 375 case INAT_SEG_REG_CS: 32d0b95300db03 Ricardo Neri 2017-10-27 376 return (unsigned short)(regs->cs & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 377 case INAT_SEG_REG_SS: 32d0b95300db03 Ricardo Neri 2017-10-27 378 return (unsigned short)(regs->ss & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 379 case INAT_SEG_REG_DS: 32d0b95300db03 Ricardo Neri 2017-10-27 @380 return vm86regs->ds; 32d0b95300db03 Ricardo Neri 2017-10-27 381 case INAT_SEG_REG_ES: 32d0b95300db03 Ricardo Neri 2017-10-27 382 return vm86regs->es; 32d0b95300db03 Ricardo Neri 2017-10-27 383 case INAT_SEG_REG_FS: 32d0b95300db03 Ricardo Neri 2017-10-27 384 return vm86regs->fs; 32d0b95300db03 Ricardo Neri 2017-10-27 385 case INAT_SEG_REG_GS: 32d0b95300db03 Ricardo Neri 2017-10-27 386 return vm86regs->gs; 32d0b95300db03 Ricardo Neri 2017-10-27 387 case INAT_SEG_REG_IGNORE: 32d0b95300db03 Ricardo Neri 2017-10-27 388 default: 32d0b95300db03 Ricardo Neri 2017-10-27 389 return -EINVAL; 32d0b95300db03 Ricardo Neri 2017-10-27 390 } 32d0b95300db03 Ricardo Neri 2017-10-27 391 } 32d0b95300db03 Ricardo Neri 2017-10-27 392 32d0b95300db03 Ricardo Neri 2017-10-27 393 switch (seg_reg_idx) { 32d0b95300db03 Ricardo Neri 2017-10-27 394 case INAT_SEG_REG_CS: 32d0b95300db03 Ricardo Neri 2017-10-27 395 return (unsigned short)(regs->cs & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 396 case INAT_SEG_REG_SS: 32d0b95300db03 Ricardo Neri 2017-10-27 397 return (unsigned short)(regs->ss & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 398 case INAT_SEG_REG_DS: 32d0b95300db03 Ricardo Neri 2017-10-27 399 return (unsigned short)(regs->ds & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 400 case INAT_SEG_REG_ES: 32d0b95300db03 Ricardo Neri 2017-10-27 401 return (unsigned short)(regs->es & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 402 case INAT_SEG_REG_FS: 32d0b95300db03 Ricardo Neri 2017-10-27 403 return (unsigned short)(regs->fs & 0xffff); 32d0b95300db03 Ricardo Neri 2017-10-27 404 case INAT_SEG_REG_GS: 3a24a60854d2ef Brian Gerst 2022-03-25 405 savesegment(gs, sel); 3a24a60854d2ef Brian Gerst 2022-03-25 406 return sel; 32d0b95300db03 Ricardo Neri 2017-10-27 407 case INAT_SEG_REG_IGNORE: 32d0b95300db03 Ricardo Neri 2017-10-27 408 default: 32d0b95300db03 Ricardo Neri 2017-10-27 409 return -EINVAL; 32d0b95300db03 Ricardo Neri 2017-10-27 410 } 32d0b95300db03 Ricardo Neri 2017-10-27 411 #endif /* CONFIG_X86_64 */ 32d0b95300db03 Ricardo Neri 2017-10-27 412 } 32d0b95300db03 Ricardo Neri 2017-10-27 413 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki