Hi James, On Wed, Aug 05, 2015 at 04:48:48PM +0100, James Hogan wrote: > These patches extend the test_user_copy test module to handle lots more > cases of user accessors which architectures can override separately, and > in particular those which are important for checking the MIPS Enhanced > Virtual Addressing (EVA) implementations, which need to handle > overlapping user and kernel address spaces, with special instructions > for accessing user address space from kernel mode. > > - Checking that kernel pointers are accepted when user address limit is > set to KERNEL_DS, as done by the kernel when it internally invokes > system calls with kernel pointers. > - Checking of the unchecked accessors (which don't call access_ok()). > Some of the tests are special cased for EVA at the moment which has > stricter hardware guarantees for bad user accesses than other > configurations. > - Checking of other sets of user accessors, including the inatomic user > copies, copy_in_user, clear_user, the user string accessors, and the > user checksum functions, all of which need special handling in arch > code with EVA. > > Tested on MIPS with and without EVA, and on x86_64. > The series causes several build failures with other architectures. >From next-20150806: Build results: total: 152 pass: 138 fail: 14 Failed builds: alpha:allmodconfig (*) arm:allmodconfig (*) arm:omap2plus_defconfig arm64:allmodconfig i386:allyesconfig (*) i386:allmodconfig (*) m68k:defconfig (*) m68k:allmodconfig (*) m68k:sun3_defconfig (*) mips:allmodconfig parisc:allmodconfig s390:allmodconfig sparc32:allmodconfig (*) xtensa:allmodconfig (*) The builds marked with (*) fail because of your patch series. Guenter
