Re: [PATCH v2 19/29] x86/cpu: Use enums for TLB descriptor types
From: kernel test robot
Date: Wed Mar 19 2025 - 12:14:10 EST
Hi Ahmed,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 6d536cad0d55e71442b6d65500f74eb85544269e]
url: https://github.com/intel-lab-lkp/linux/commits/Ahmed-S-Darwish/x86-treewide-Introduce-x86_vendor_amd_or_hygon/20250318-011153
base: 6d536cad0d55e71442b6d65500f74eb85544269e
patch link: https://lore.kernel.org/r/20250317164745.4754-20-darwi%40linutronix.de
patch subject: [PATCH v2 19/29] x86/cpu: Use enums for TLB descriptor types
config: i386-randconfig-061-20250319 (https://download.01.org/0day-ci/archive/20250319/202503192339.PuCOnZaa-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250319/202503192339.PuCOnZaa-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503192339.PuCOnZaa-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
drivers/cpuidle/poll_state.c: note: in included file (through arch/x86/include/asm/cpuid/api.h, arch/x86/include/asm/cpuid.h, arch/x86/include/asm/processor.h, ...):
arch/x86/include/asm/cpuid/types.h:56:1: sparse: sparse: static assertion failed: "sizeof(enum _cache_table_type) == 1"
>> arch/x86/include/asm/cpuid/types.h:85:1: sparse: sparse: static assertion failed: "sizeof(enum _tlb_table_type) == 1"
--
drivers/cpuidle/governor.c: note: in included file (through arch/x86/include/asm/cpuid/api.h, arch/x86/include/asm/cpuid.h, arch/x86/include/asm/processor.h, ...):
arch/x86/include/asm/cpuid/types.h:56:1: sparse: sparse: static assertion failed: "sizeof(enum _cache_table_type) == 1"
>> arch/x86/include/asm/cpuid/types.h:85:1: sparse: sparse: static assertion failed: "sizeof(enum _tlb_table_type) == 1"
--
drivers/cpuidle/cpuidle-haltpoll.c: note: in included file (through arch/x86/include/asm/cpuid/api.h, arch/x86/include/asm/cpuid.h, arch/x86/include/asm/processor.h, ...):
arch/x86/include/asm/cpuid/types.h:56:1: sparse: sparse: static assertion failed: "sizeof(enum _cache_table_type) == 1"
>> arch/x86/include/asm/cpuid/types.h:85:1: sparse: sparse: static assertion failed: "sizeof(enum _tlb_table_type) == 1"
--
drivers/cpuidle/driver.c: note: in included file (through arch/x86/include/asm/cpuid/api.h, arch/x86/include/asm/cpuid.h, arch/x86/include/asm/processor.h, ...):
arch/x86/include/asm/cpuid/types.h:56:1: sparse: sparse: static assertion failed: "sizeof(enum _cache_table_type) == 1"
>> arch/x86/include/asm/cpuid/types.h:85:1: sparse: sparse: static assertion failed: "sizeof(enum _tlb_table_type) == 1"
--
drivers/cpuidle/sysfs.c: note: in included file (through arch/x86/include/asm/cpuid/api.h, arch/x86/include/asm/cpuid.h, arch/x86/include/asm/processor.h, ...):
arch/x86/include/asm/cpuid/types.h:56:1: sparse: sparse: static assertion failed: "sizeof(enum _cache_table_type) == 1"
>> arch/x86/include/asm/cpuid/types.h:85:1: sparse: sparse: static assertion failed: "sizeof(enum _tlb_table_type) == 1"
--
drivers/cpuidle/cpuidle.c: note: in included file (through arch/x86/include/asm/cpuid/api.h, arch/x86/include/asm/cpuid.h, arch/x86/include/asm/processor.h, ...):
arch/x86/include/asm/cpuid/types.h:56:1: sparse: sparse: static assertion failed: "sizeof(enum _cache_table_type) == 1"
>> arch/x86/include/asm/cpuid/types.h:85:1: sparse: sparse: static assertion failed: "sizeof(enum _tlb_table_type) == 1"
--
drivers/cpuidle/governors/menu.c: note: in included file (through arch/x86/include/asm/cpuid/api.h, arch/x86/include/asm/cpuid.h, arch/x86/include/asm/processor.h, ...):
arch/x86/include/asm/cpuid/types.h:56:1: sparse: sparse: static assertion failed: "sizeof(enum _cache_table_type) == 1"
>> arch/x86/include/asm/cpuid/types.h:85:1: sparse: sparse: static assertion failed: "sizeof(enum _tlb_table_type) == 1"
--
drivers/cpuidle/governors/haltpoll.c: note: in included file (through arch/x86/include/asm/cpuid/api.h, arch/x86/include/asm/cpuid.h, arch/x86/include/asm/processor.h, ...):
arch/x86/include/asm/cpuid/types.h:56:1: sparse: sparse: static assertion failed: "sizeof(enum _cache_table_type) == 1"
>> arch/x86/include/asm/cpuid/types.h:85:1: sparse: sparse: static assertion failed: "sizeof(enum _tlb_table_type) == 1"
vim +85 arch/x86/include/asm/cpuid/types.h
45
46 /*
47 * Leaf 0x2 1-byte descriptors' cache types
48 * To be used for their mappings at cache_table[]
49 */
50 enum _cache_table_type {
51 CACHE_L1_INST,
52 CACHE_L1_DATA,
53 CACHE_L2,
54 CACHE_L3
55 } __packed;
> 56 static_assert(sizeof(enum _cache_table_type) == 1);
57
58 /*
59 * Leaf 0x2 1-byte descriptors' TLB types
60 * To be used for their mappings at intel_tlb_table[]
61 *
62 * Start at 1 since type 0 is reserved for HW byte descriptors which are
63 * not recognized by the kernel; i.e., those without an explicit mapping.
64 */
65 enum _tlb_table_type {
66 TLB_INST_4K = 1,
67 TLB_INST_4M,
68 TLB_INST_2M_4M,
69 TLB_INST_ALL,
70
71 TLB_DATA_4K,
72 TLB_DATA_4M,
73 TLB_DATA_2M_4M,
74 TLB_DATA_4K_4M,
75 TLB_DATA_1G,
76 TLB_DATA_1G_2M_4M,
77
78 TLB_DATA0_4K,
79 TLB_DATA0_4M,
80 TLB_DATA0_2M_4M,
81
82 STLB_4K,
83 STLB_4K_2M,
84 } __packed;
> 85 static_assert(sizeof(enum _tlb_table_type) == 1);
86
--
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