This rewrites a bunch of the vdso code. After these patches, the vvar and hpet pages are mapped directly after the vdso text on all five vdso variants. The fixmaps are gone on 64-bit systems.
It would be possible to build the x32 vdso the normal way on top of these patches. I haven't touched the pvclock code. I'd want to understand why it exists, why it isn't using rdtsc, and why it has two rdtsc_barrier calls before rearranging it. This is most likely 3.16 material. Andy Lutomirski (6): x86: Clean up 32-bit vs 64-bit vdso params x86: Move syscall and sysenter setup into kernel/cpu/common.c x86: Reimplement vdso.so preparation in build-time C x86: Move the 32-bit vdso special pages after the text x86: Move the vvar and hpet mappings next to the 64-bit vDSO x86: Remove vestiges of VDSO_PRELINK and some outdated comments arch/x86/ia32/ia32_signal.c | 8 +- arch/x86/include/asm/elf.h | 35 +++--- arch/x86/include/asm/fixmap.h | 10 +- arch/x86/include/asm/mmu.h | 2 +- arch/x86/include/asm/proto.h | 2 - arch/x86/include/asm/vdso.h | 74 +++++------- arch/x86/include/asm/vdso32.h | 11 -- arch/x86/include/asm/vvar.h | 20 +--- arch/x86/include/uapi/asm/vsyscall.h | 7 +- arch/x86/kernel/cpu/common.c | 33 ++++++ arch/x86/kernel/hpet.c | 3 - arch/x86/kernel/signal.c | 6 +- arch/x86/kernel/vsyscall_64.c | 15 +-- arch/x86/mm/fault.c | 5 +- arch/x86/mm/init_64.c | 13 +- arch/x86/um/vdso/vma.c | 2 +- arch/x86/vdso/.gitignore | 5 +- arch/x86/vdso/Makefile | 91 ++++++-------- arch/x86/vdso/vclock_gettime.c | 26 ++-- arch/x86/vdso/vdso-layout.lds.S | 49 ++++---- arch/x86/vdso/vdso.S | 3 - arch/x86/vdso/vdso.lds.S | 7 +- arch/x86/vdso/vdso2c.c | 156 ++++++++++++++++++++++++ arch/x86/vdso/vdso2c.h | 154 ++++++++++++++++++++++++ arch/x86/vdso/vdso32-setup.c | 195 ++++-------------------------- arch/x86/vdso/vdso32.S | 9 -- arch/x86/vdso/vdso32/vdso32.lds.S | 15 +-- arch/x86/vdso/vdsox32.S | 3 - arch/x86/vdso/vdsox32.lds.S | 7 +- arch/x86/vdso/vma.c | 222 +++++++++++++++++++---------------- arch/x86/xen/mmu.c | 8 +- arch/x86/xen/setup.c | 11 +- kernel/sysctl.c | 5 + 33 files changed, 650 insertions(+), 562 deletions(-) delete mode 100644 arch/x86/include/asm/vdso32.h delete mode 100644 arch/x86/vdso/vdso.S create mode 100644 arch/x86/vdso/vdso2c.c create mode 100644 arch/x86/vdso/vdso2c.h delete mode 100644 arch/x86/vdso/vdso32.S delete mode 100644 arch/x86/vdso/vdsox32.S -- 1.9.0 -- 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/
