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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v4 00/24] Disable domctl-op via CONFIG_MGMT_HYPERCALLS
It can be beneficial for some dom0less systems to further reduce Xen footprint via disabling some hypercalls handling code, which may not to be used & required in such systems. We are introducing a new single Kconfig CONFIG_MGMT_HYPERCALLS to manage such hypercalls. We are trying to disable hypercalls in the following aspects: - sysctl - domctl - hvm - physdev - platform This patch serie is only focusing on domctl-op. Different aspects will be covered in different patch serie. Features, like VM event, or paging log-dirty support, which fully rely on domctl-op, will be wrapped with CONFIG_MGMT_HYPERCALLS, to reduce Xen footprint as much as possible. It is derived from Stefano Stabellini's commit "xen: introduce kconfig options to disable hypercalls"( https://lore.kernel.org/xen-devel/20241219092917.3006174-1-Sergiy_Kibrik@xxxxxxxx) --- This patch serie is based on two patch serie, one is "[XEN][PATCH v4] xen: make VMTRACE support optional" and " [PATCH v3 0/7] consolidate vm event subsystem" --- Penny Zheng (24): xen/xsm: remove redundant xsm_iomem_mapping() xen: consolidate cpuid library xen/sysctl: replace CONFIG_SYSCTL with CONFIG_MGMT_HYPERCALLS xen/domctl: make MGMT_HYPERCALLS transiently def_bool xen/vm_event: make VM_EVENT depend on CONFIG_MGMT_HYPERCALLS xen/domctl: consolidate domain.c with MGMT_HYPERCALLS xen/mem_sharing: make memory sharing depend on MGMT_HYPERCALLS xen/domctl: wrap domain_kill() with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap vcpu_affinity_domctl() with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap sched_adjust() with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap xsm_irq_permission with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap arch-specific domain_set_time_offset() with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap xsm_set_target() with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap pci-subset iommu-related domctl op with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap device-tree-subset iommu-related domctl op with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap iommu-related domctl op with CONFIG_MGMT_HYPERCALLS xen/domctl: wrap arch_{get,set}_paging_mempool_size() with CONFIG_MGMT_HYPERCALLS xen/domctl: make CONFIG_X86_PSR depend on CONFIG_MGMT_HYPERCALLS xen/domctl: wrap hvm_save{,load} with CONFIG_MGMT_HYPERCALLS xen/x86: wrap x86-specific domctl-op with CONFIG_MGMT_HYPERCALLS xen/arm: wrap arm-specific domctl-op with CONFIG_MGMT_HYPERCALLS xen/domctl: domctl_lock synchronization only when MGMT_HYPERCALLS=y xen/domctl: wrap common/domctl.c with CONFIG_MGMT_HYPERCALLS xen: move MGMT_HYPERCALLS out of PV_SHIM_EXCLUSIVE tools/fuzz/cpu-policy/Makefile | 2 +- tools/fuzz/x86_instruction_emulator/Makefile | 10 +- tools/libs/guest/Makefile.common | 2 +- tools/tests/cpu-policy/Makefile | 2 +- tools/tests/x86_emulator/Makefile | 2 +- xen/Kconfig.debug | 3 +- xen/arch/arm/Kconfig | 2 +- xen/arch/arm/Makefile | 4 +- xen/arch/arm/arm32/Makefile | 2 +- xen/arch/arm/arm64/Makefile | 2 +- xen/arch/arm/domain.c | 3 + xen/arch/arm/include/asm/tee/tee.h | 2 + xen/arch/arm/mmu/p2m.c | 8 + xen/arch/arm/mpu/p2m.c | 2 + xen/arch/arm/tee/ffa.c | 4 + xen/arch/arm/tee/optee.c | 4 + xen/arch/arm/tee/tee.c | 2 + xen/arch/arm/time.c | 2 + xen/arch/ppc/stubs.c | 2 + xen/arch/riscv/stubs.c | 8 +- xen/arch/x86/Kconfig | 3 +- xen/arch/x86/Makefile | 4 +- xen/arch/x86/configs/pvshim_defconfig | 2 +- xen/arch/x86/domain.c | 2 + xen/arch/x86/emul-i8254.c | 2 + xen/arch/x86/hvm/Kconfig | 3 +- xen/arch/x86/hvm/hvm.c | 7 +- xen/arch/x86/hvm/pmtimer.c | 2 + xen/arch/x86/hvm/save.c | 154 +++++------ xen/arch/x86/include/asm/p2m.h | 2 +- xen/arch/x86/include/asm/paging.h | 2 +- xen/arch/x86/mm/p2m-pod.c | 2 + xen/arch/x86/mm/p2m.c | 2 + xen/arch/x86/mm/paging.c | 4 + xen/arch/x86/psr.c | 18 -- xen/arch/x86/time.c | 2 + xen/common/Kconfig | 28 +- xen/common/Makefile | 7 +- xen/common/device-tree/device-tree.c | 2 + xen/common/domain.c | 116 ++++---- xen/common/domctl.c | 2 +- xen/common/page_alloc.c | 8 +- xen/common/perfc.c | 4 +- xen/common/sched/arinc653.c | 11 +- xen/common/sched/core.c | 8 +- xen/common/sched/cpupool.c | 16 +- xen/common/sched/credit.c | 10 +- xen/common/sched/credit2.c | 10 +- xen/common/sched/private.h | 10 +- xen/common/sched/rt.c | 4 + xen/common/spinlock.c | 4 +- xen/drivers/char/console.c | 4 +- xen/drivers/passthrough/amd/pci_amd_iommu.c | 20 +- xen/drivers/passthrough/arm/ipmmu-vmsa.c | 26 +- xen/drivers/passthrough/arm/smmu-v3.c | 4 + xen/drivers/passthrough/arm/smmu.c | 55 ++-- xen/drivers/passthrough/device_tree.c | 108 ++++---- xen/drivers/passthrough/iommu.c | 2 + xen/drivers/passthrough/pci.c | 52 ++-- xen/drivers/passthrough/vtd/iommu.c | 6 +- xen/drivers/vpci/header.c | 2 +- xen/include/hypercall-defs.c | 14 +- xen/include/xen/domain.h | 4 - xen/include/xsm/dummy.h | 29 +- xen/include/xsm/xsm.h | 60 ++-- xen/lib/x86/Makefile | 7 +- xen/lib/x86/cpuid-generic.c | 273 +++++++++++++++++++ xen/lib/x86/cpuid.c | 260 ------------------ xen/xsm/dummy.c | 21 +- xen/xsm/flask/hooks.c | 54 ++-- 70 files changed, 812 insertions(+), 708 deletions(-) create mode 100644 xen/lib/x86/cpuid-generic.c -- 2.34.1
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