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Message-ID: <201703311229.2A8sv4Z2%fengguang.wu@intel.com>
Date: Fri, 31 Mar 2017 12:59:04 +0800
From: kbuild test robot <lkp@...el.com>
To: Kees Cook <keescook@...omium.org>
Cc: kbuild-all@...org, linux-kernel@...r.kernel.org,
	Rik van Riel <riel@...hat.com>, Andy Lutomirski <luto@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
	x86@...nel.org, Paolo Bonzini <pbonzini@...hat.com>,
	Radim Krčmář <rkrcmar@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Yu-cheng Yu <yu-cheng.yu@...el.com>,
	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Borislav Petkov <bp@...e.de>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	Thomas Garnier <thgarnie@...gle.com>,
	Brian Gerst <brgerst@...il.com>, He Chen <he.chen@...ux.intel.com>,
	Mathias Krause <minipli@...glemail.com>,
	Fenghua Yu <fenghua.yu@...el.com>, Piotr Luc <piotr.luc@...el.com>,
	Kyle Huey <me@...ehuey.com>, Len Brown <len.brown@...el.com>,
	kvm@...r.kernel.org, kernel-hardening@...ts.openwall.com
Subject: Re: [PATCH] x86/fpu: move FPU state into separate cache

Hi Kees,

[auto build test ERROR on kvm/linux-next]
[also build test ERROR on v4.11-rc4 next-20170330]
[cannot apply to tip/x86/core]
[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/Kees-Cook/x86-fpu-move-FPU-state-into-separate-cache/20170331-110507
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: i386-randconfig-r0-201713 (attached as .config)
compiler: gcc-5 (Debian 5.4.1-2) 5.4.1 20160904
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   arch/x86/math-emu/fpu_entry.c: In function 'valid_prefix':
   arch/x86/math-emu/fpu_system.h:50:24: error: request for member 'soft' in something not a structure or union
    #define FPU_info  (I387->soft.info)
                           ^
   include/linux/compiler.h:178:40: note: in definition of macro 'likely'
    # define likely(x) __builtin_expect(!!(x), 1)
                                           ^
   arch/x86/include/asm/uaccess.h:100:10: note: in expansion of macro '__range_not_ok'
     likely(!__range_not_ok(addr, size, user_addr_max()));  \
             ^
   arch/x86/math-emu/fpu_system.h:80:36: note: in expansion of macro 'access_ok'
    #define FPU_access_ok(x,y,z) if ( !access_ok(x,y,z) ) \
                                       ^
   arch/x86/math-emu/fpu_system.h:95:31: note: in expansion of macro 'FPU_access_ok'
    #define FPU_code_access_ok(z) FPU_access_ok(VERIFY_READ,(void __user *)FPU_EIP,z)
                                  ^
   arch/x86/math-emu/fpu_system.h:57:20: note: in expansion of macro 'FPU_info'
    #define FPU_EIP   (FPU_info->regs->ip)
                       ^
   arch/x86/math-emu/fpu_system.h:95:72: note: in expansion of macro 'FPU_EIP'
    #define FPU_code_access_ok(z) FPU_access_ok(VERIFY_READ,(void __user *)FPU_EIP,z)
                                                                           ^
   arch/x86/math-emu/fpu_entry.c:558:2: note: in expansion of macro 'FPU_code_access_ok'
     FPU_code_access_ok(1);
     ^
   In file included from arch/x86/math-emu/fpu_entry.c:35:0:
   arch/x86/math-emu/fpu_system.h:50:24: error: request for member 'soft' in something not a structure or union
    #define FPU_info  (I387->soft.info)
                           ^
   arch/x86/math-emu/fpu_system.h:81:16: note: in expansion of macro 'FPU_info'
        math_abort(FPU_info,SIGSEGV)
                   ^
   arch/x86/math-emu/fpu_system.h:95:31: note: in expansion of macro 'FPU_access_ok'
    #define FPU_code_access_ok(z) FPU_access_ok(VERIFY_READ,(void __user *)FPU_EIP,z)
                                  ^
   arch/x86/math-emu/fpu_entry.c:558:2: note: in expansion of macro 'FPU_code_access_ok'
     FPU_code_access_ok(1);
     ^
   In file included from include/asm-generic/bug.h:4:0,
                    from arch/x86/include/asm/bug.h:35,
                    from include/linux/bug.h:4,
                    from include/linux/signal.h:4,
                    from arch/x86/math-emu/fpu_entry.c:27:
   arch/x86/math-emu/fpu_system.h:50:24: error: request for member 'soft' in something not a structure or union
    #define FPU_info  (I387->soft.info)
                           ^
   include/linux/compiler.h:178:40: note: in definition of macro 'likely'
    # define likely(x) __builtin_expect(!!(x), 1)
                                           ^
   arch/x86/include/asm/uaccess.h:100:10: note: in expansion of macro '__range_not_ok'
     likely(!__range_not_ok(addr, size, user_addr_max()));  \
             ^
   arch/x86/math-emu/fpu_system.h:80:36: note: in expansion of macro 'access_ok'
    #define FPU_access_ok(x,y,z) if ( !access_ok(x,y,z) ) \
                                       ^
   arch/x86/math-emu/fpu_system.h:95:31: note: in expansion of macro 'FPU_access_ok'
    #define FPU_code_access_ok(z) FPU_access_ok(VERIFY_READ,(void __user *)FPU_EIP,z)
                                  ^
   arch/x86/math-emu/fpu_system.h:57:20: note: in expansion of macro 'FPU_info'
    #define FPU_EIP   (FPU_info->regs->ip)
                       ^
   arch/x86/math-emu/fpu_system.h:95:72: note: in expansion of macro 'FPU_EIP'
    #define FPU_code_access_ok(z) FPU_access_ok(VERIFY_READ,(void __user *)FPU_EIP,z)
                                                                           ^
   arch/x86/math-emu/fpu_entry.c:602:4: note: in expansion of macro 'FPU_code_access_ok'
       FPU_code_access_ok(1);
       ^
   In file included from arch/x86/math-emu/fpu_entry.c:35:0:
   arch/x86/math-emu/fpu_system.h:50:24: error: request for member 'soft' in something not a structure or union
    #define FPU_info  (I387->soft.info)
                           ^
   arch/x86/math-emu/fpu_system.h:81:16: note: in expansion of macro 'FPU_info'
        math_abort(FPU_info,SIGSEGV)
                   ^
   arch/x86/math-emu/fpu_system.h:95:31: note: in expansion of macro 'FPU_access_ok'
    #define FPU_code_access_ok(z) FPU_access_ok(VERIFY_READ,(void __user *)FPU_EIP,z)
                                  ^
   arch/x86/math-emu/fpu_entry.c:602:4: note: in expansion of macro 'FPU_code_access_ok'
       FPU_code_access_ok(1);
       ^
   arch/x86/math-emu/fpu_entry.c: In function 'math_abort':
   arch/x86/math-emu/fpu_system.h:50:24: error: request for member 'soft' in something not a structure or union
    #define FPU_info  (I387->soft.info)
                           ^
   arch/x86/math-emu/fpu_system.h:57:20: note: in expansion of macro 'FPU_info'
    #define FPU_EIP   (FPU_info->regs->ip)
                       ^
   arch/x86/math-emu/fpu_entry.c:626:2: note: in expansion of macro 'FPU_EIP'
     FPU_EIP = FPU_ORIG_EIP;
     ^
   arch/x86/math-emu/fpu_system.h:50:24: error: request for member 'soft' in something not a structure or union
    #define FPU_info  (I387->soft.info)
                           ^
   arch/x86/math-emu/fpu_system.h:58:24: note: in expansion of macro 'FPU_info'
    #define FPU_ORIG_EIP  (FPU_info->___orig_eip)
                           ^
   arch/x86/math-emu/fpu_entry.c:626:12: note: in expansion of macro 'FPU_ORIG_EIP'
     FPU_EIP = FPU_ORIG_EIP;
               ^
   arch/x86/math-emu/fpu_entry.c: In function 'fpregs_soft_set':
>> arch/x86/math-emu/fpu_entry.c:646:55: error: request for member 'soft' in something not a structure or union
     struct swregs_state *s387 = &target->thread.fpu.state.soft;
                                                          ^
   arch/x86/math-emu/fpu_entry.c: In function 'fpregs_soft_get':
   arch/x86/math-emu/fpu_entry.c:698:55: error: request for member 'soft' in something not a structure or union
     struct swregs_state *s387 = &target->thread.fpu.state.soft;
                                                          ^
--
      ^
   arch/x86/math-emu/errors.c: In function 'set_precision_flag_down':
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:553:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Precision) { /* The masked response */
         ^
   arch/x86/math-emu/fpu_system.h:71:30: error: request for member 'soft' in something not a structure or union
    #define partial_status  (I387->soft.swd)
                                 ^
   arch/x86/math-emu/errors.c:554:3: note: in expansion of macro 'partial_status'
      partial_status &= ~SW_C1;
      ^
   arch/x86/math-emu/fpu_system.h:71:30: error: request for member 'soft' in something not a structure or union
    #define partial_status  (I387->soft.swd)
                                 ^
   arch/x86/math-emu/errors.c:555:3: note: in expansion of macro 'partial_status'
      partial_status |= SW_Precision;
      ^
   arch/x86/math-emu/errors.c: In function 'denormal_operand':
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:562:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Denormal) { /* The masked response */
         ^
   arch/x86/math-emu/fpu_system.h:71:30: error: request for member 'soft' in something not a structure or union
    #define partial_status  (I387->soft.swd)
                                 ^
   arch/x86/math-emu/errors.c:563:3: note: in expansion of macro 'partial_status'
      partial_status |= SW_Denorm_Op;
      ^
   arch/x86/math-emu/errors.c: In function 'arith_overflow':
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:575:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Overflow) {
         ^
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:586:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Overflow) {
         ^
   arch/x86/math-emu/errors.c: In function 'arith_underflow':
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:603:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Underflow) {
         ^
   arch/x86/math-emu/fpu_system.h:71:30: error: request for member 'soft' in something not a structure or union
    #define partial_status  (I387->soft.swd)
                                 ^
   arch/x86/math-emu/errors.c:607:4: note: in expansion of macro 'partial_status'
       partial_status &= ~SW_C1; /* Round down. */
       ^
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:618:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Underflow) {
         ^
   arch/x86/math-emu/errors.c: In function 'FPU_stack_overflow':
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:631:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Invalid) {
         ^
   arch/x86/math-emu/fpu_system.h:75:20: error: request for member 'soft' in something not a structure or union
    #define top   (I387->soft.ftop)
                       ^
   arch/x86/math-emu/errors.c:633:3: note: in expansion of macro 'top'
      top--;
      ^
   arch/x86/math-emu/errors.c: In function 'FPU_stack_underflow':
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:646:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Invalid) {
         ^
   arch/x86/math-emu/errors.c: In function 'FPU_stack_underflow_i':
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:660:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Invalid) {
         ^
   arch/x86/math-emu/errors.c: In function 'FPU_stack_underflow_pop':
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/errors.c:674:6: note: in expansion of macro 'control_word'
     if (control_word & CW_Invalid) {
         ^
   arch/x86/math-emu/errors.c: In function 'real_1op_NaN':
>> arch/x86/math-emu/errors.c:407:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^
   arch/x86/math-emu/errors.c: In function 'real_2op_NaN':
   arch/x86/math-emu/errors.c:491:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^
   arch/x86/math-emu/errors.c: In function 'arith_invalid':
   arch/x86/math-emu/errors.c:507:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^
   arch/x86/math-emu/errors.c: In function 'FPU_divide_by_zero':
   arch/x86/math-emu/errors.c:526:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^
   arch/x86/math-emu/errors.c: In function 'set_precision_flag':
   arch/x86/math-emu/errors.c:539:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^
   arch/x86/math-emu/errors.c: In function 'denormal_operand':
   arch/x86/math-emu/errors.c:569:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^
--
   In file included from arch/x86/math-emu/fpu_aux.c:13:0:
   arch/x86/math-emu/status_w.h: In function 'setcc':
   arch/x86/math-emu/fpu_system.h:71:30: error: request for member 'soft' in something not a structure or union
    #define partial_status  (I387->soft.swd)
                                 ^
   arch/x86/math-emu/status_w.h:53:2: note: in expansion of macro 'partial_status'
     partial_status &= ~(SW_C0 | SW_C1 | SW_C2 | SW_C3);
     ^
   arch/x86/math-emu/fpu_system.h:71:30: error: request for member 'soft' in something not a structure or union
    #define partial_status  (I387->soft.swd)
                                 ^
   arch/x86/math-emu/status_w.h:54:2: note: in expansion of macro 'partial_status'
     partial_status |= (cc) & (SW_C0 | SW_C1 | SW_C2 | SW_C3);
     ^
   arch/x86/math-emu/fpu_aux.c: In function 'fclex':
   arch/x86/math-emu/fpu_system.h:71:30: error: request for member 'soft' in something not a structure or union
    #define partial_status  (I387->soft.swd)
                                 ^
   arch/x86/math-emu/fpu_aux.c:25:2: note: in expansion of macro 'partial_status'
     partial_status &=
     ^
   arch/x86/math-emu/fpu_system.h:64:41: error: request for member 'soft' in something not a structure or union
    #define no_ip_update  (*(u_char *)&(I387->soft.no_update))
                                            ^
   arch/x86/math-emu/fpu_aux.c:29:2: note: in expansion of macro 'no_ip_update'
     no_ip_update = 1;
     ^
   arch/x86/math-emu/fpu_aux.c: In function 'finit':
>> arch/x86/math-emu/fpu_aux.c:55:46: error: request for member 'soft' in something not a structure or union
     fpstate_init_soft(&current->thread.fpu.state.soft);
                                                 ^
   In file included from arch/x86/math-emu/fpu_aux.c:13:0:
   arch/x86/math-emu/fpu_aux.c: In function 'finit_':
   arch/x86/math-emu/fpu_system.h:65:36: error: request for member 'soft' in something not a structure or union
    #define FPU_rm   (*(u_char *)&(I387->soft.rm))
                                       ^
   arch/x86/math-emu/fpu_aux.c:72:15: note: in expansion of macro 'FPU_rm'
     (finit_table[FPU_rm]) ();
                  ^
   arch/x86/math-emu/fpu_aux.c: In function 'fstsw_ax':
   arch/x86/math-emu/fpu_system.h:50:24: error: request for member 'soft' in something not a structure or union
    #define FPU_info  (I387->soft.info)
                           ^
   arch/x86/math-emu/fpu_system.h:55:20: note: in expansion of macro 'FPU_info'
    #define FPU_EAX   (FPU_info->regs->ax)
                       ^
   arch/x86/math-emu/fpu_aux.c:77:13: note: in expansion of macro 'FPU_EAX'
     *(short *)&FPU_EAX = status_word();
                ^
   arch/x86/math-emu/fpu_system.h:71:30: error: request for member 'soft' in something not a structure or union
    #define partial_status  (I387->soft.swd)
                                 ^
   arch/x86/math-emu/status_w.h:50:5: note: in expansion of macro 'partial_status'
      ((partial_status & ~SW_Top & 0xffff) | ((top << SW_Top_Shift) & SW_Top))
        ^
   arch/x86/math-emu/fpu_aux.c:77:23: note: in expansion of macro 'status_word'
     *(short *)&FPU_EAX = status_word();
                          ^
   arch/x86/math-emu/fpu_system.h:75:20: error: request for member 'soft' in something not a structure or union
    #define top   (I387->soft.ftop)
                       ^
   arch/x86/math-emu/status_w.h:50:44: note: in expansion of macro 'top'
      ((partial_status & ~SW_Top & 0xffff) | ((top << SW_Top_Shift) & SW_Top))
                                               ^
   arch/x86/math-emu/fpu_aux.c:77:23: note: in expansion of macro 'status_word'
     *(short *)&FPU_EAX = status_word();
                          ^
   arch/x86/math-emu/fpu_system.h:64:41: error: request for member 'soft' in something not a structure or union
    #define no_ip_update  (*(u_char *)&(I387->soft.no_update))
                                            ^
   arch/x86/math-emu/fpu_aux.c:78:2: note: in expansion of macro 'no_ip_update'
     no_ip_update = 1;
     ^
   arch/x86/math-emu/fpu_aux.c: In function 'fstsw_':
   arch/x86/math-emu/fpu_system.h:65:36: error: request for member 'soft' in something not a structure or union
    #define FPU_rm   (*(u_char *)&(I387->soft.rm))
                                       ^
   arch/x86/math-emu/fpu_aux.c:88:15: note: in expansion of macro 'FPU_rm'
     (fstsw_table[FPU_rm]) ();
                  ^
   arch/x86/math-emu/fpu_aux.c: In function 'fp_nop':
   arch/x86/math-emu/fpu_system.h:65:36: error: request for member 'soft' in something not a structure or union
    #define FPU_rm   (*(u_char *)&(I387->soft.rm))
                                       ^
   arch/x86/math-emu/fpu_aux.c:98:16: note: in expansion of macro 'FPU_rm'
     (fp_nop_table[FPU_rm]) ();
                   ^
   arch/x86/math-emu/fpu_aux.c: In function 'fld_i_':
   arch/x86/math-emu/fpu_system.h:65:36: error: request for member 'soft' in something not a structure or union
    #define FPU_rm   (*(u_char *)&(I387->soft.rm))
                                       ^
   arch/x86/math-emu/fpu_aux.c:113:6: note: in expansion of macro 'FPU_rm'
     i = FPU_rm;
         ^
   arch/x86/math-emu/fpu_system.h:74:25: error: request for member 'soft' in something not a structure or union
    #define registers  (I387->soft.st_space)
                            ^
   arch/x86/math-emu/fpu_emu.h:144:35: note: in expansion of macro 'registers'
    #define register_base ((u_char *) registers )
                                      ^
   arch/x86/math-emu/fpu_emu.h:146:38: note: in expansion of macro 'register_base'
    #define st(x)      ( * ((FPU_REG *)( register_base + 10 * ((top+x) & 7) )) )
                                         ^
   arch/x86/math-emu/fpu_aux.c:115:13: note: in expansion of macro 'st'
      reg_copy(&st(i), st_new_ptr);
                ^
   arch/x86/math-emu/fpu_system.h:75:20: error: request for member 'soft' in something not a structure or union
    #define top   (I387->soft.ftop)
                       ^
   arch/x86/math-emu/fpu_emu.h:146:61: note: in expansion of macro 'top'
    #define st(x)      ( * ((FPU_REG *)( register_base + 10 * ((top+x) & 7) )) )
                                                                ^
   arch/x86/math-emu/fpu_aux.c:115:13: note: in expansion of macro 'st'
      reg_copy(&st(i), st_new_ptr);
                ^
   arch/x86/math-emu/fpu_system.h:75:20: error: request for member 'soft' in something not a structure or union
    #define top   (I387->soft.ftop)
                       ^
   arch/x86/math-emu/fpu_emu.h:156:18: note: in expansion of macro 'top'
    #define push() { top--; }
                     ^
   arch/x86/math-emu/fpu_aux.c:117:3: note: in expansion of macro 'push'
      push();
      ^
   arch/x86/math-emu/fpu_system.h:72:28: error: request for member 'soft' in something not a structure or union
    #define control_word  (I387->soft.cwd)
                               ^
   arch/x86/math-emu/fpu_aux.c:120:7: note: in expansion of macro 'control_word'
      if (control_word & CW_Invalid) {
..

vim +/soft +646 arch/x86/math-emu/fpu_entry.c

^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  620  		}
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  621  	}
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  622  }
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  623  
ae6af41f arch/x86/math-emu/fpu_entry.c  Tejun Heo         2009-02-09  624  void math_abort(struct math_emu_info *info, unsigned int signal)
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  625  {
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16 @626  	FPU_EIP = FPU_ORIG_EIP;
51e7dc70 arch/x86/math-emu/fpu_entry.c  Srikar Dronamraju 2012-03-12  627  	current->thread.trap_nr = X86_TRAP_MF;
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  628  	current->thread.error_code = 0;
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  629  	send_sig(signal, current, 1);
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  630  	RE_ENTRANT_CHECK_OFF;
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  631        __asm__("movl %0,%%esp ; ret": :"g"(((long)info) - 4));
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  632  #ifdef PARANOID
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  633  	printk("ERROR: wm-FPU-emu math_abort failed!\n");
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  634  #endif /* PARANOID */
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  635  }
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  636  
c47ada30 arch/x86/math-emu/fpu_entry.c  Ingo Molnar       2015-04-30  637  #define S387 ((struct swregs_state *)s387)
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  638  #define sstatus_word() \
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  639    ((S387->swd & ~SW_Top & 0xffff) | ((S387->ftop << SW_Top_Shift) & SW_Top))
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  640  
ff0ebb23 arch/x86/math-emu/fpu_entry.c  Roland McGrath    2008-01-30  641  int fpregs_soft_set(struct task_struct *target,
ff0ebb23 arch/x86/math-emu/fpu_entry.c  Roland McGrath    2008-01-30  642  		    const struct user_regset *regset,
ff0ebb23 arch/x86/math-emu/fpu_entry.c  Roland McGrath    2008-01-30  643  		    unsigned int pos, unsigned int count,
ff0ebb23 arch/x86/math-emu/fpu_entry.c  Roland McGrath    2008-01-30  644  		    const void *kbuf, const void __user *ubuf)
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  645  {
c47ada30 arch/x86/math-emu/fpu_entry.c  Ingo Molnar       2015-04-30 @646  	struct swregs_state *s387 = &target->thread.fpu.state.soft;
ff0ebb23 arch/x86/math-emu/fpu_entry.c  Roland McGrath    2008-01-30  647  	void *space = s387->st_space;
ff0ebb23 arch/x86/math-emu/fpu_entry.c  Roland McGrath    2008-01-30  648  	int ret;
^1da177e arch/i386/math-emu/fpu_entry.c Linus Torvalds    2005-04-16  649  	int offset, other, i, tags, regnr, tag, newtop;

:::::: The code at line 646 was first introduced by commit
:::::: c47ada305de3803517ae64aa50686f644c5456fa x86/fpu: Harmonize FPU register state types

:::::: TO: Ingo Molnar <mingo@...nel.org>
:::::: CC: Ingo Molnar <mingo@...nel.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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