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Date:   Sun, 17 Dec 2017 09:24:19 +0800
From:   kbuild test robot <>
To:     Andy Lutomirski <>
Cc:,,, Thomas Gleixner <>
Subject: [tip:WIP.x86/pti-upstream 38/50]
 arch/x86/include/asm/mmu_context.h:73:18: error: 'LDT_BASE_ADDR' undeclared;
 did you mean '_ASM_ADD'?

tree: WIP.x86/pti-upstream
head:   78e4da51f7c77587cc6f419af4f63a21b289bdb7
commit: 7e482cfe4a23ead21215423c4566c8516ba21025 [38/50] x86/pti: Put the LDT in its own PGD if PTI is on
config: i386-alldefconfig (attached as .config)
compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
        git checkout 7e482cfe4a23ead21215423c4566c8516ba21025
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from arch/x86/kernel/step.c:10:0:
   arch/x86/include/asm/mmu_context.h: In function 'ldt_slot_va':
>> arch/x86/include/asm/mmu_context.h:73:18: error: 'LDT_BASE_ADDR' undeclared (first use in this function); did you mean '_ASM_ADD'?
     return (void *)(LDT_BASE_ADDR + LDT_SLOT_STRIDE * slot);
   arch/x86/include/asm/mmu_context.h:73:18: note: each undeclared identifier is reported only once for each function it appears in

vim +73 arch/x86/include/asm/mmu_context.h

    71	static inline void *ldt_slot_va(int slot)
    72	{
  > 73		return (void *)(LDT_BASE_ADDR + LDT_SLOT_STRIDE * slot);
    74	}

0-DAY kernel test infrastructure                Open Source Technology Center                   Intel Corporation

Download attachment ".config.gz" of type "application/gzip" (10672 bytes)

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