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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 0/9] Add hypervisor sysfs-like support
On the 2019 Xen developer summit there was agreement that the Xen hypervisor should gain support for a hierarchical name-value store similar to the Linux kernel's sysfs. This is a first implementation of that idea adding the basic functionality to hypervisor and tools side. The interface to any user program making use of that "xen-hypfs" is a new library "libxenhypfs" with a stable interface. As a followup switching libxl to use the hypervisor file system for runtime parameter modifications is possible. This would enable removal of the XEN_SYSCTL_set_parameter sysctl operation. Changes in V3: - major rework, especially by supporting binary contents of entries - added several new patches (1, 2, 7) - full support of all runtime parameters - support of writing entries (especially runtime parameters) Changes in V2: - all comments to V1 addressed - added man-page for xenhypfs tool - added runtime parameter read access for string parameters Changes in V1: - renamed xenfs ->xenhypfs - added writable entries support at the interface level and in the xenhypfs tool - added runtime parameter read access (integer type only for now) - added docs/misc/hypfs-paths.pandoc for path descriptions Juergen Gross (9): xen: add a generic way to include binary files as variables xen: split parameter related definitions in own header file docs: add feature document for Xen hypervisor sysfs-like support xen: add basic hypervisor filesystem support libs: add libxenhypfs tools: add xenfs tool xen: provide version information in hypfs xen: add /buildinfo/config entry to hypervisor filesystem xen: add runtime parameter access support to hypfs .gitignore | 6 + docs/features/hypervisorfs.pandoc | 86 +++++ docs/man/xenhypfs.1.pod | 61 ++++ docs/misc/hypfs-paths.pandoc | 153 +++++++++ tools/Rules.mk | 6 + tools/libs/Makefile | 1 + tools/libs/hypfs/Makefile | 16 + tools/libs/hypfs/core.c | 535 +++++++++++++++++++++++++++++++ tools/libs/hypfs/include/xenhypfs.h | 75 +++++ tools/libs/hypfs/libxenhypfs.map | 10 + tools/libs/hypfs/xenhypfs.pc.in | 10 + tools/misc/Makefile | 6 + tools/misc/xenhypfs.c | 189 +++++++++++ xen/arch/arm/acpi/boot.c | 1 + xen/arch/arm/cpuerrata.c | 1 + xen/arch/arm/domain_build.c | 1 + xen/arch/arm/gic-v3-lpi.c | 1 + xen/arch/arm/setup.c | 1 + xen/arch/arm/smpboot.c | 1 + xen/arch/arm/traps.c | 2 + xen/arch/arm/xen.lds.S | 5 + xen/arch/x86/acpi/boot.c | 1 + xen/arch/x86/acpi/cpu_idle.c | 1 + xen/arch/x86/acpi/cpufreq/cpufreq.c | 1 + xen/arch/x86/acpi/power.c | 1 + xen/arch/x86/apic.c | 1 + xen/arch/x86/cpu/amd.c | 1 + xen/arch/x86/cpu/common.c | 1 + xen/arch/x86/cpu/mcheck/mce.c | 1 + xen/arch/x86/cpu/mcheck/mce_intel.c | 1 + xen/arch/x86/cpu/mtrr/generic.c | 1 + xen/arch/x86/cpu/mwait-idle.c | 1 + xen/arch/x86/cpu/vpmu.c | 1 + xen/arch/x86/cpuid.c | 1 + xen/arch/x86/dom0_build.c | 1 + xen/arch/x86/e820.c | 1 + xen/arch/x86/genapic/probe.c | 1 + xen/arch/x86/genapic/x2apic.c | 1 + xen/arch/x86/hpet.c | 1 + xen/arch/x86/hvm/asid.c | 1 + xen/arch/x86/hvm/hvm.c | 1 + xen/arch/x86/hvm/hypercall.c | 1 + xen/arch/x86/hvm/quirks.c | 1 + xen/arch/x86/hvm/viridian/viridian.c | 1 + xen/arch/x86/hvm/vmx/vmcs.c | 18 +- xen/arch/x86/hvm/vmx/vmx.c | 1 + xen/arch/x86/hypercall.c | 1 + xen/arch/x86/io_apic.c | 1 + xen/arch/x86/irq.c | 1 + xen/arch/x86/microcode.c | 1 + xen/arch/x86/mm.c | 1 + xen/arch/x86/mm/p2m.c | 1 + xen/arch/x86/msi.c | 1 + xen/arch/x86/nmi.c | 1 + xen/arch/x86/numa.c | 1 + xen/arch/x86/oprofile/nmi_int.c | 1 + xen/arch/x86/psr.c | 1 + xen/arch/x86/pv/domain.c | 8 +- xen/arch/x86/pv/hypercall.c | 1 + xen/arch/x86/pv/shim.c | 1 + xen/arch/x86/setup.c | 1 + xen/arch/x86/shutdown.c | 1 + xen/arch/x86/spec_ctrl.c | 1 + xen/arch/x86/tboot.c | 1 + xen/arch/x86/time.c | 1 + xen/arch/x86/traps.c | 1 + xen/arch/x86/tsx.c | 1 + xen/arch/x86/x86_64/mmconfig-shared.c | 1 + xen/arch/x86/xen.lds.S | 5 + xen/arch/x86/xstate.c | 1 + xen/common/Makefile | 13 + xen/common/argo.c | 1 + xen/common/core_parking.c | 1 + xen/common/cpupool.c | 1 + xen/common/debugtrace.c | 1 + xen/common/domain.c | 1 + xen/common/efi/boot.c | 1 + xen/common/gdbstub.c | 1 + xen/common/grant_table.c | 18 +- xen/common/hypfs.c | 403 +++++++++++++++++++++++ xen/common/kernel.c | 79 ++++- xen/common/kexec.c | 1 + xen/common/memory.c | 1 + xen/common/page_alloc.c | 1 + xen/common/rcupdate.c | 1 + xen/common/sched_credit.c | 1 + xen/common/sched_credit2.c | 1 + xen/common/schedule.c | 1 + xen/common/shutdown.c | 1 + xen/common/timer.c | 1 + xen/common/trace.c | 1 + xen/drivers/acpi/apei/hest.c | 1 + xen/drivers/acpi/tables.c | 1 + xen/drivers/char/arm-uart.c | 1 + xen/drivers/char/console.c | 50 ++- xen/drivers/char/ehci-dbgp.c | 1 + xen/drivers/char/ns16550.c | 1 + xen/drivers/char/serial.c | 1 + xen/drivers/cpufreq/cpufreq.c | 1 + xen/drivers/passthrough/amd/iommu_acpi.c | 1 + xen/drivers/passthrough/iommu.c | 1 + xen/drivers/passthrough/pci.c | 1 + xen/drivers/passthrough/vtd/dmar.c | 1 + xen/drivers/passthrough/vtd/quirks.c | 1 + xen/drivers/passthrough/vtd/x86/vtd.c | 1 + xen/drivers/passthrough/x86/ats.c | 1 + xen/drivers/video/vesa.c | 1 + xen/drivers/video/vga.c | 1 + xen/include/public/hypfs.h | 124 +++++++ xen/include/public/xen.h | 1 + xen/include/xen/hypercall.h | 8 + xen/include/xen/hypfs.h | 93 ++++++ xen/include/xen/init.h | 120 ------- xen/include/xen/kernel.h | 3 + xen/include/xen/param.h | 184 +++++++++++ xen/tools/binfile | 29 ++ xen/xsm/flask/Makefile | 5 +- xen/xsm/flask/flask-policy.S | 16 - xen/xsm/flask/flask_op.c | 1 + xen/xsm/xsm_core.c | 1 + 120 files changed, 2274 insertions(+), 151 deletions(-) create mode 100644 docs/features/hypervisorfs.pandoc create mode 100644 docs/man/xenhypfs.1.pod create mode 100644 docs/misc/hypfs-paths.pandoc create mode 100644 tools/libs/hypfs/Makefile create mode 100644 tools/libs/hypfs/core.c create mode 100644 tools/libs/hypfs/include/xenhypfs.h create mode 100644 tools/libs/hypfs/libxenhypfs.map create mode 100644 tools/libs/hypfs/xenhypfs.pc.in create mode 100644 tools/misc/xenhypfs.c create mode 100644 xen/common/hypfs.c create mode 100644 xen/include/public/hypfs.h create mode 100644 xen/include/xen/hypfs.h create mode 100644 xen/include/xen/param.h create mode 100755 xen/tools/binfile delete mode 100644 xen/xsm/flask/flask-policy.S -- 2.16.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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