Re: [PATCH v3 2/3] swiotlb: dma: its: Enforce host page-size alignment for shared buffers
From: kernel test robot <hidden>
Date: 2026-03-09 15:45:42
Also in:
kvmarm, linux-coco, linux-iommu, lkml, oe-kbuild-all
Hi Aneesh, kernel test robot noticed the following build errors: [auto build test ERROR on arm64/for-next/core] [also build test ERROR on tip/irq/core arm/for-next arm/fixes kvmarm/next soc/for-next linus/master v7.0-rc3 next-20260306] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Aneesh-Kumar-K-V-Arm/dma-direct-swiotlb-handle-swiotlb-alloc-free-outside-__dma_direct_alloc_pages/20260309-182834 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core patch link: https://lore.kernel.org/r/20260309102625.2315725-3-aneesh.kumar%40kernel.org patch subject: [PATCH v3 2/3] swiotlb: dma: its: Enforce host page-size alignment for shared buffers config: i386-randconfig-013-20260309 (https://download.01.org/0day-ci/archive/20260309/202603092323.myqT3tXw-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260309/202603092323.myqT3tXw-lkp@intel.com/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 [off-list ref] | Closes: https://lore.kernel.org/oe-kbuild-all/202603092323.myqT3tXw-lkp@intel.com/ (local) All errors (new ones prefixed by >>): In file included from arch/x86/include/asm/processor-flags.h:6, from arch/x86/include/asm/irqflags.h:5, from include/linux/irqflags.h:18, from include/linux/spinlock.h:59, from include/linux/swait.h:7, from include/linux/completion.h:12, from include/linux/crypto.h:15, from arch/x86/kernel/asm-offsets.c:9: include/linux/mem_encrypt.h: In function 'mem_decrypt_granule_size':
quoted
include/linux/mem_encrypt.h:60:16: error: 'PAGE_SIZE' undeclared (first use in this function)
60 | return PAGE_SIZE;
| ^~~~~~~~~
include/linux/mem_encrypt.h:60:16: note: each undeclared identifier is reported only once for each function it appears in
include/linux/mem_encrypt.h: In function 'mem_decrypt_align':quoted
include/linux/mem_encrypt.h:66:16: error: implicit declaration of function 'ALIGN' [-Wimplicit-function-declaration]
66 | return ALIGN(size, mem_decrypt_granule_size());
| ^~~~~
make[3]: *** [scripts/Makefile.build:184: arch/x86/kernel/asm-offsets.s] Error 1 shuffle=4157930943
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1333: prepare0] Error 2 shuffle=4157930943
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:248: __sub-make] Error 2 shuffle=4157930943
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:248: __sub-make] Error 2 shuffle=4157930943
make: Target 'prepare' not remade because of errors.
vim +/PAGE_SIZE +60 include/linux/mem_encrypt.h
56
57 #ifndef mem_decrypt_granule_size
58 static inline size_t mem_decrypt_granule_size(void)
59 {
> 60 return PAGE_SIZE;
61 }
62 #endif
63
64 static inline size_t mem_decrypt_align(size_t size)
65 {
> 66 return ALIGN(size, mem_decrypt_granule_size());
67 }
68
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