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Message-ID: <202109021635.SNhQi24U-lkp@intel.com>
Date: Thu, 2 Sep 2021 16:54:38 +0800
From: kernel test robot <lkp@...el.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>
Subject: arch/x86/kvm/mmu/mmu.c:227:1: error: unused function 'is_cr4_la57'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 4ac6d90867a4de2e12117e755dbd76e08d88697f
commit: 6066772455f21ce1e90f003243c9864091621773 KVM: x86/mmu: Add accessors to query mmu_role bits
date: 10 weeks ago
config: i386-randconfig-r005-20210901 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4b1fde8a2b681dad2ce0c082a5d6422caa06b0bc)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6066772455f21ce1e90f003243c9864091621773
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 6066772455f21ce1e90f003243c9864091621773
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
arch/x86/kvm/mmu/mmu.c:220:1: error: unused function 'is_cr0_pg' [-Werror,-Wunused-function]
BUILD_MMU_ROLE_ACCESSOR(ext, cr0, pg);
^
arch/x86/kvm/mmu/mmu.c:216:20: note: expanded from macro 'BUILD_MMU_ROLE_ACCESSOR'
static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
^
<scratch space>:95:1: note: expanded from here
is_cr0_pg
^
arch/x86/kvm/mmu/mmu.c:221:1: error: unused function 'is_cr0_wp' [-Werror,-Wunused-function]
BUILD_MMU_ROLE_ACCESSOR(base, cr0, wp);
^
arch/x86/kvm/mmu/mmu.c:216:20: note: expanded from macro 'BUILD_MMU_ROLE_ACCESSOR'
static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
^
<scratch space>:100:1: note: expanded from here
is_cr0_wp
^
arch/x86/kvm/mmu/mmu.c:222:1: error: unused function 'is_cr4_pse' [-Werror,-Wunused-function]
BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pse);
^
arch/x86/kvm/mmu/mmu.c:216:20: note: expanded from macro 'BUILD_MMU_ROLE_ACCESSOR'
static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
^
<scratch space>:105:1: note: expanded from here
is_cr4_pse
^
arch/x86/kvm/mmu/mmu.c:223:1: error: unused function 'is_cr4_pae' [-Werror,-Wunused-function]
BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pae);
^
arch/x86/kvm/mmu/mmu.c:216:20: note: expanded from macro 'BUILD_MMU_ROLE_ACCESSOR'
static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
^
<scratch space>:110:1: note: expanded from here
is_cr4_pae
^
arch/x86/kvm/mmu/mmu.c:225:1: error: unused function 'is_cr4_smap' [-Werror,-Wunused-function]
BUILD_MMU_ROLE_ACCESSOR(ext, cr4, smap);
^
arch/x86/kvm/mmu/mmu.c:216:20: note: expanded from macro 'BUILD_MMU_ROLE_ACCESSOR'
static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
^
<scratch space>:120:1: note: expanded from here
is_cr4_smap
^
arch/x86/kvm/mmu/mmu.c:226:1: error: unused function 'is_cr4_pke' [-Werror,-Wunused-function]
BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pke);
^
arch/x86/kvm/mmu/mmu.c:216:20: note: expanded from macro 'BUILD_MMU_ROLE_ACCESSOR'
static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
^
<scratch space>:125:1: note: expanded from here
is_cr4_pke
^
>> arch/x86/kvm/mmu/mmu.c:227:1: error: unused function 'is_cr4_la57' [-Werror,-Wunused-function]
BUILD_MMU_ROLE_ACCESSOR(ext, cr4, la57);
^
arch/x86/kvm/mmu/mmu.c:216:20: note: expanded from macro 'BUILD_MMU_ROLE_ACCESSOR'
static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
^
<scratch space>:130:1: note: expanded from here
is_cr4_la57
^
arch/x86/kvm/mmu/mmu.c:228:1: error: unused function 'is_efer_nx' [-Werror,-Wunused-function]
BUILD_MMU_ROLE_ACCESSOR(base, efer, nx);
^
arch/x86/kvm/mmu/mmu.c:216:20: note: expanded from macro 'BUILD_MMU_ROLE_ACCESSOR'
static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
^
<scratch space>:135:1: note: expanded from here
is_efer_nx
^
8 errors generated.
vim +/is_cr4_la57 +227 arch/x86/kvm/mmu/mmu.c
208
209 /*
210 * The MMU itself (with a valid role) is the single source of truth for the
211 * MMU. Do not use the regs used to build the MMU/role, nor the vCPU. The
212 * regs don't account for dependencies, e.g. clearing CR4 bits if CR0.PG=1,
213 * and the vCPU may be incorrect/irrelevant.
214 */
215 #define BUILD_MMU_ROLE_ACCESSOR(base_or_ext, reg, name) \
216 static inline bool is_##reg##_##name(struct kvm_mmu *mmu) \
217 { \
218 return !!(mmu->mmu_role. base_or_ext . reg##_##name); \
219 }
220 BUILD_MMU_ROLE_ACCESSOR(ext, cr0, pg);
221 BUILD_MMU_ROLE_ACCESSOR(base, cr0, wp);
222 BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pse);
223 BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pae);
224 BUILD_MMU_ROLE_ACCESSOR(ext, cr4, smep);
225 BUILD_MMU_ROLE_ACCESSOR(ext, cr4, smap);
226 BUILD_MMU_ROLE_ACCESSOR(ext, cr4, pke);
> 227 BUILD_MMU_ROLE_ACCESSOR(ext, cr4, la57);
228 BUILD_MMU_ROLE_ACCESSOR(base, efer, nx);
229
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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