Hi Lianbo, Thank you for the patch! Yet something to improve:
[auto build test ERROR on sof-driver-fuweitax/master] [also build test ERROR on v4.19-rc5 next-20180928] [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/20180930-001539 base: https://github.com/fuweitax/linux master config: i386-randconfig-x0-09300051 (attached as .config) compiler: gcc-5 (Debian 5.5.0-3) 5.4.1 20171010 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:115: undefined reference to `copy_oldmem_page_encrypted' vim +115 fs/proc/vmcore.c 88 89 /* Reads a page from the oldmem device from given offset. */ 90 static ssize_t read_from_oldmem(char *buf, size_t count, 91 u64 *ppos, int userbuf, 92 bool encrypted) 93 { 94 unsigned long pfn, offset; 95 size_t nr_bytes; 96 ssize_t read = 0, tmp; 97 98 if (!count) 99 return 0; 100 101 offset = (unsigned long)(*ppos % PAGE_SIZE); 102 pfn = (unsigned long)(*ppos / PAGE_SIZE); 103 104 do { 105 if (count > (PAGE_SIZE - offset)) 106 nr_bytes = PAGE_SIZE - offset; 107 else 108 nr_bytes = count; 109 110 /* If pfn is not ram, return zeros for sparse dump files */ 111 if (pfn_is_ram(pfn) == 0) 112 memset(buf, 0, nr_bytes); 113 else { 114 if (encrypted) > 115 tmp = copy_oldmem_page_encrypted(pfn, > buf, 116 nr_bytes, 117 offset, 118 userbuf); 119 else 120 tmp = copy_oldmem_page(pfn, buf, nr_bytes, 121 offset, userbuf); 122 123 if (tmp < 0) 124 return tmp; 125 } 126 *ppos += nr_bytes; 127 count -= nr_bytes; 128 buf += nr_bytes; 129 read += nr_bytes; 130 ++pfn; 131 offset = 0; 132 } while (count); 133 134 return read; 135 } 136 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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