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[PATCH v3] x86/hvm: add HVM-specific Kconfig

Add a separate menu for configuring HVM build-time settings to better organize HVM-specific options. HVM options will now appear in a dedicated sub-menu in the menuconfig tool. Also, make AMD_SVM config dependent on AMD config and INTEL_VMX on INTEL respectively. Signed-off-by: Denis Mukhin <dmukhin@xxxxxxxx> --- Changes v2->v3: - dropped menu around AMD_SVM and INTEL_VMX - rebased, resolved merge conflict for MEM_PAGING - it depends on VM_EVENT --- xen/arch/x86/Kconfig | 75 +--------------------------------------- xen/arch/x86/hvm/Kconfig | 73 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 74 insertions(+), 74 deletions(-) create mode 100644 xen/arch/x86/hvm/Kconfig diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig index f086799594..18efdb2e31 100644 --- a/xen/arch/x86/Kconfig +++ b/xen/arch/x86/Kconfig @@ -107,42 +107,7 @@ config PV_LINEAR_PT If unsure, say Y. -config HVM - bool "HVM support" - depends on !PV_SHIM_EXCLUSIVE - default !PV_SHIM - select COMPAT - select IOREQ_SERVER - select MEM_ACCESS_ALWAYS_ON - help - Interfaces to support HVM domains. HVM domains require hardware - virtualisation extensions (e.g. Intel VT-x, AMD SVM), but can boot - guests which have no specific Xen knowledge. - - This option is needed if you want to run HVM or PVH domains. - - If unsure, say Y. - -config AMD_SVM - bool "AMD-V" if EXPERT - depends on HVM - default y - help - Enables virtual machine extensions on platforms that implement the - AMD Virtualization Technology (AMD-V). - If your system includes a processor with AMD-V support, say Y. - If in doubt, say Y. - -config INTEL_VMX - bool "Intel VT-x" if EXPERT - depends on HVM - default y - select ARCH_VCPU_IOREQ_COMPLETION - help - Enables virtual machine extensions on platforms that implement the - Intel Virtualization Technology (Intel VT-x). - If your system includes a processor with Intel VT-x support, say Y. - If in doubt, say Y. +source "arch/x86/hvm/Kconfig" config XEN_SHSTK bool "Supervisor Shadow Stacks" @@ -201,25 +166,6 @@ config BIGMEM If unsure, say N. -config HVM_FEP - bool "HVM Forced Emulation Prefix support (UNSUPPORTED)" if UNSUPPORTED - default DEBUG - depends on HVM - help - - Compiles in a feature that allows HVM guest to arbitrarily - exercise the instruction emulator. - - This feature can only be enabled during boot time with - appropriate hypervisor command line option. Please read - hypervisor command line documentation before trying to use - this feature. - - This is strictly for testing purposes, and not appropriate - for use in production. - - If unsure, say N. - config TBOOT bool "Xen tboot support (UNSUPPORTED)" depends on INTEL && UNSUPPORTED @@ -348,14 +294,6 @@ config HYPERV_GUEST endif -config MEM_PAGING - bool "Xen memory paging support (UNSUPPORTED)" if UNSUPPORTED - depends on HVM && VM_EVENT - -config MEM_SHARING - bool "Xen memory sharing support (UNSUPPORTED)" if UNSUPPORTED - depends on HVM - config REQUIRE_NX bool "Require NX (No eXecute) support" help @@ -372,17 +310,6 @@ config REQUIRE_NX was unavailable. However, if enabled, Xen will no longer boot on any CPU which is lacking NX support. -config ALTP2M - bool "Alternate P2M support" if EXPERT - depends on INTEL_VMX - default y - help - Alternate-p2m allows a guest to manage multiple p2m guest physical - "memory views" (as opposed to a single p2m). - Useful for memory introspection. - - If unsure, stay with defaults. - config UCODE_SCAN_DEFAULT bool "Scan for microcode by default" help diff --git a/xen/arch/x86/hvm/Kconfig b/xen/arch/x86/hvm/Kconfig new file mode 100644 index 0000000000..2def0f98e2 --- /dev/null +++ b/xen/arch/x86/hvm/Kconfig @@ -0,0 +1,73 @@ +menuconfig HVM + bool "HVM support" + depends on !PV_SHIM_EXCLUSIVE + default !PV_SHIM + select COMPAT + select IOREQ_SERVER + select MEM_ACCESS_ALWAYS_ON + help + Interfaces to support HVM domains. HVM domains require hardware + virtualisation extensions (e.g. Intel VT-x, AMD SVM), but can boot + guests which have no specific Xen knowledge. + + This option is needed if you want to run HVM or PVH domains. + + If unsure, say Y. + +if HVM + +config AMD_SVM + bool "AMD-V" if AMD && EXPERT + default y + help + Enables virtual machine extensions on platforms that implement the + AMD Virtualization Technology (AMD-V). + If your system includes a processor with AMD-V support, say Y. + If in doubt, say Y. + +config INTEL_VMX + bool "Intel VT-x" if INTEL && EXPERT + default y + select ARCH_VCPU_IOREQ_COMPLETION + help + Enables virtual machine extensions on platforms that implement the + Intel Virtualization Technology (Intel VT-x). + If your system includes a processor with Intel VT-x support, say Y. + If in doubt, say Y. + +config HVM_FEP + bool "HVM Forced Emulation Prefix support (UNSUPPORTED)" if UNSUPPORTED + default DEBUG + help + Compiles in a feature that allows HVM guest to arbitrarily + exercise the instruction emulator. + + This feature can only be enabled during boot time with + appropriate hypervisor command line option. Please read + hypervisor command line documentation before trying to use + this feature. + + This is strictly for testing purposes, and not appropriate + for use in production. + + If unsure, say N. + +config ALTP2M + bool "Alternate P2M support" if EXPERT + depends on INTEL_VMX + default y + help + Alternate-p2m allows a guest to manage multiple p2m guest physical + "memory views" (as opposed to a single p2m). + Useful for memory introspection. + + If unsure, stay with defaults. + +config MEM_PAGING + bool "Xen memory paging support (UNSUPPORTED)" if UNSUPPORTED + depends on VM_EVENT + +config MEM_SHARING + bool "Xen memory sharing support (UNSUPPORTED)" if UNSUPPORTED + +endif -- 2.34.1

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