Patches 1 and 2 update the vDSO reference parser. Despite the late submission, this might be 3.16 material: it's just documentation. If I'd been more on top of this, I would have done it for 3.15. It's also probably worthwhile given that there is at least one rather buggy vDSO parser in the wild.
Patches 3 and 4 make "Hello world" as built by Go stop segfaulting. It's a performance regression for Go programs: it causes them to stop finding any symbols in the vDSO, but that's a lot better than segfaulting. Changes from v1: - Improve portability of the vdso parser. - Add an explicit ELFCLASS check in the vdso parser (why not?). - Fix x32 build. - Add a comment describing what the hack works around, why, and where the Go bug was introduced. Changes from v2: Re-add patch 1. Whoops. Andy Lutomirski (4): doc,vdso: Rename vdso_test.c to vdso_standalone_test_x86.c doc,vdso: Make vDSO examples more portable x86,vdso: Add PUT_LE to store little-endian values x86,vdso: Hack to keep 64-bit Go programs working Documentation/vDSO/parse_vdso.c | 67 ++++++++------ Documentation/vDSO/vdso_standalone_test_x86.c | 128 ++++++++++++++++++++++++++ Documentation/vDSO/vdso_test.c | 107 +++++---------------- arch/x86/vdso/Makefile | 18 ++-- arch/x86/vdso/vdso-fakesections.c | 32 +++++++ arch/x86/vdso/vdso2c.c | 19 +++- arch/x86/vdso/vdso2c.h | 23 ++++- 7 files changed, 268 insertions(+), 126 deletions(-) create mode 100644 Documentation/vDSO/vdso_standalone_test_x86.c create mode 100644 arch/x86/vdso/vdso-fakesections.c -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
