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SubjectRe: [PATCH v6 1/4] x86: kdump: move reserve_crashkernel_low() into crash_core.c
Hi Chen,

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/Chen-Zhou/support-reserving-crashkernel-above-4G-on-arm64-kdump/20190901-053351
config: um-i386_defconfig (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=um SUBARCH=i386

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

All errors (new ones prefixed by >>):

In file included from include/linux/crash_core.h:9:0,
from kernel//printk/printk.c:37:
arch/x86/include/asm/kexec.h: In function 'crash_setup_regs':
arch/x86/include/asm/kexec.h:88:46: error: 'struct pt_regs' has no member named 'bx'
asm volatile("movl %%ebx,%0" : "=m"(newregs->bx));
^~
arch/x86/include/asm/kexec.h:89:46: error: 'struct pt_regs' has no member named 'cx'
asm volatile("movl %%ecx,%0" : "=m"(newregs->cx));
^~
arch/x86/include/asm/kexec.h:90:46: error: 'struct pt_regs' has no member named 'dx'
asm volatile("movl %%edx,%0" : "=m"(newregs->dx));
^~
arch/x86/include/asm/kexec.h:91:46: error: 'struct pt_regs' has no member named 'si'
asm volatile("movl %%esi,%0" : "=m"(newregs->si));
^~
arch/x86/include/asm/kexec.h:92:46: error: 'struct pt_regs' has no member named 'di'
asm volatile("movl %%edi,%0" : "=m"(newregs->di));
^~
arch/x86/include/asm/kexec.h:93:46: error: 'struct pt_regs' has no member named 'bp'
asm volatile("movl %%ebp,%0" : "=m"(newregs->bp));
^~
arch/x86/include/asm/kexec.h:94:46: error: 'struct pt_regs' has no member named 'ax'
asm volatile("movl %%eax,%0" : "=m"(newregs->ax));
^~
arch/x86/include/asm/kexec.h:95:46: error: 'struct pt_regs' has no member named 'sp'
asm volatile("movl %%esp,%0" : "=m"(newregs->sp));
^~
arch/x86/include/asm/kexec.h:96:49: error: 'struct pt_regs' has no member named 'ss'
asm volatile("movl %%ss, %%eax;" :"=a"(newregs->ss));
^~
arch/x86/include/asm/kexec.h:97:49: error: 'struct pt_regs' has no member named 'cs'
asm volatile("movl %%cs, %%eax;" :"=a"(newregs->cs));
^~
>> arch/x86/include/asm/kexec.h:98:49: error: 'struct pt_regs' has no member named 'ds'
asm volatile("movl %%ds, %%eax;" :"=a"(newregs->ds));
^~
>> arch/x86/include/asm/kexec.h:99:51: error: 'struct pt_regs' has no member named 'es'; did you mean 'regs'?
asm volatile("movl %%es, %%eax;" :"=a"(newregs->es));
^~
regs
arch/x86/include/asm/kexec.h:100:47: error: 'struct pt_regs' has no member named 'flags'
asm volatile("pushfl; popl %0" :"=m"(newregs->flags));
^~
arch/x86/include/asm/kexec.h:122:10: error: 'struct pt_regs' has no member named 'ip'
newregs->ip = _THIS_IP_;
^~

vim +98 arch/x86/include/asm/kexec.h

dd5f726076cc76 arch/x86/include/asm/kexec.h Vivek Goyal 2014-08-08 75
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 76 /*
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 77 * This function is responsible for capturing register states if coming
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 78 * via panic otherwise just fix up the ss and sp if coming via kernel
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 79 * mode exception.
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 80 */
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 81 static inline void crash_setup_regs(struct pt_regs *newregs,
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 82 struct pt_regs *oldregs)
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 83 {
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 84 if (oldregs) {
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 85 memcpy(newregs, oldregs, sizeof(*newregs));
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 86 } else {
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 87 #ifdef CONFIG_X86_32
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 88 asm volatile("movl %%ebx,%0" : "=m"(newregs->bx));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 89 asm volatile("movl %%ecx,%0" : "=m"(newregs->cx));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 90 asm volatile("movl %%edx,%0" : "=m"(newregs->dx));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 91 asm volatile("movl %%esi,%0" : "=m"(newregs->si));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 92 asm volatile("movl %%edi,%0" : "=m"(newregs->di));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 93 asm volatile("movl %%ebp,%0" : "=m"(newregs->bp));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 94 asm volatile("movl %%eax,%0" : "=m"(newregs->ax));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 @95 asm volatile("movl %%esp,%0" : "=m"(newregs->sp));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 @96 asm volatile("movl %%ss, %%eax;" :"=a"(newregs->ss));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 97 asm volatile("movl %%cs, %%eax;" :"=a"(newregs->cs));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 @98 asm volatile("movl %%ds, %%eax;" :"=a"(newregs->ds));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 @99 asm volatile("movl %%es, %%eax;" :"=a"(newregs->es));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 100 asm volatile("pushfl; popl %0" :"=m"(newregs->flags));
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 101 #else
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 102 asm volatile("movq %%rbx,%0" : "=m"(newregs->bx));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 103 asm volatile("movq %%rcx,%0" : "=m"(newregs->cx));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 104 asm volatile("movq %%rdx,%0" : "=m"(newregs->dx));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 105 asm volatile("movq %%rsi,%0" : "=m"(newregs->si));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 106 asm volatile("movq %%rdi,%0" : "=m"(newregs->di));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 107 asm volatile("movq %%rbp,%0" : "=m"(newregs->bp));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 108 asm volatile("movq %%rax,%0" : "=m"(newregs->ax));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 109 asm volatile("movq %%rsp,%0" : "=m"(newregs->sp));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 110 asm volatile("movq %%r8,%0" : "=m"(newregs->r8));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 111 asm volatile("movq %%r9,%0" : "=m"(newregs->r9));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 112 asm volatile("movq %%r10,%0" : "=m"(newregs->r10));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 113 asm volatile("movq %%r11,%0" : "=m"(newregs->r11));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 114 asm volatile("movq %%r12,%0" : "=m"(newregs->r12));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 115 asm volatile("movq %%r13,%0" : "=m"(newregs->r13));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 116 asm volatile("movq %%r14,%0" : "=m"(newregs->r14));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 117 asm volatile("movq %%r15,%0" : "=m"(newregs->r15));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 118 asm volatile("movl %%ss, %%eax;" :"=a"(newregs->ss));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 119 asm volatile("movl %%cs, %%eax;" :"=a"(newregs->cs));
b69a3f9dc0bbdb include/asm-x86/kexec.h Joe Perches 2008-03-23 120 asm volatile("pushfq; popq %0" :"=m"(newregs->flags));
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 121 #endif
de0d22e50cd3d5 arch/x86/include/asm/kexec.h Nick Desaulniers 2018-10-30 122 newregs->ip = _THIS_IP_;
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 123 }
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 124 }
3c233d1334ffc8 include/asm-x86/kexec.h Harvey Harrison 2008-01-30 125

:::::: The code at line 98 was first introduced by commit
:::::: b69a3f9dc0bbdbf9278ac5bc8d4b6347c11a701b include/asm-x86/kexec.h: checkpatch cleanups - formatting only

:::::: TO: Joe Perches <joe@perches.com>
:::::: CC: Ingo Molnar <mingo@elte.hu>

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