Hi Lianbo, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.17 next-20180614] [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/Lianbo-Jiang/Support-kdump-for-AMD-secure-memory-encryption-sme/20180614-164938 config: i386-randconfig-c0-06141337 (attached as .config) compiler: gcc-7 (Debian 7.3.0-16) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): fs/proc/vmcore.o: In function `read_from_oldmem': >> fs/proc/vmcore.c:127: undefined reference to `copy_oldmem_page_encrypted' vim +127 fs/proc/vmcore.c 100 101 /* Reads a page from the oldmem device from given offset. */ 102 static ssize_t read_from_oldmem(char *buf, size_t count, 103 u64 *ppos, int userbuf, 104 bool encrypted) 105 { 106 unsigned long pfn, offset; 107 size_t nr_bytes; 108 ssize_t read = 0, tmp; 109 110 if (!count) 111 return 0; 112 113 offset = (unsigned long)(*ppos % PAGE_SIZE); 114 pfn = (unsigned long)(*ppos / PAGE_SIZE); 115 116 do { 117 if (count > (PAGE_SIZE - offset)) 118 nr_bytes = PAGE_SIZE - offset; 119 else 120 nr_bytes = count; 121 122 /* If pfn is not ram, return zeros for sparse dump files */ 123 if (pfn_is_ram(pfn) == 0) 124 memset(buf, 0, nr_bytes); 125 else { 126 if (encrypted) > 127 tmp = copy_oldmem_page_encrypted(pfn, buf, 128 nr_bytes, offset, userbuf); 129 else 130 tmp = copy_oldmem_page(pfn, buf, nr_bytes, 131 offset, userbuf); 132 133 if (tmp < 0) 134 return tmp; 135 } 136 *ppos += nr_bytes; 137 count -= nr_bytes; 138 buf += nr_bytes; 139 read += nr_bytes; 140 ++pfn; 141 offset = 0; 142 } while (count); 143 144 return read; 145 } 146 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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