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SUSE:SLE-12-SP4:Update
valgrind.3987
r15702.diff
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File r15702.diff of Package valgrind.3987
------------------------------------------------------------------------ r15702 | florian | 2015-10-12 22:35:56 +0200 (Mo, 12. Okt 2015) | 14 Zeilen On a zEC12 or z13, a glibc with lock elision enabled infers from HWCAP that the prerequisites for lock elision are met. Then it may use TBEGIN and other transactional-execution instructions which are not implemented by Valgrind. Likewise, the upcoming glibc 2.23 will exploit vector instructions if they are advertised by HWCAP; and those are currently not implemented by Valgrind either. In general, the increased use of ifunc may lead to more such cases in the future. This patch suppresses the advertising of those hardware features via HWCAP which are either not known to Valgrind or currently unsupported. Patch by Andreas Arnez (arnez@linux.vnet.ibm.com). Fixes BZ #353680. ------------------------------------------------------------------------ Index: include/vki/vki-s390x-linux.h =================================================================== --- include/vki/vki-s390x-linux.h.orig +++ include/vki/vki-s390x-linux.h @@ -800,12 +800,15 @@ typedef struct #define VKI_PTRACE_POKEUSR_AREA 0x5001 //---------------------------------------------------------------------- -// From linux-2.6.16.60/include/asm-s390/elf.h +// From linux-3.18/include/asm-s390/elf.h //---------------------------------------------------------------------- typedef vki_s390_fp_regs vki_elf_fpregset_t; typedef vki_s390_regs vki_elf_gregset_t; +#define VKI_HWCAP_S390_TE 1024 +#define VKI_HWCAP_S390_VXRS 2048 + //---------------------------------------------------------------------- // From linux-2.6.16.60/include/asm-s390/ucontext.h Index: coregrind/m_initimg/initimg-linux.c =================================================================== --- coregrind/m_initimg/initimg-linux.c.orig +++ coregrind/m_initimg/initimg-linux.c @@ -701,6 +701,12 @@ Addr setup_client_stack( void* init_sp, in syswrap-arm-linux.c rather than to base this on conditional compilation. */ } +# elif defined(VGP_s390x_linux) + { + /* Advertise hardware features "below" TE only. TE and VXRS + (and anything above) are not supported by Valgrind. */ + auxv->u.a_val &= VKI_HWCAP_S390_TE - 1; + } # endif break; # if defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) Index: README.s390 =================================================================== --- README.s390.orig +++ README.s390 @@ -22,6 +22,9 @@ Limitations - Some gcc versions use mvc to copy 4/8 byte values. This will affect certain debug messages. For example, memcheck will complain about 4 one-byte reads/writes instead of just a single read/write. +- The transactional-execution facility is not supported; it is masked + off from HWCAP. +- The vector facility is not supported; it is masked off from HWCAP. Hardware facilities
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