在 2018年06月14日 20:55, kbuild test robot 写道: > 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' > It is strange, it doesn't have this error in my test. I will look for another environment to test and see whether it can be reproduced. Maybe the compile error will be fixed in the patch V3. Thanks. Lianbo > 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 > _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
