diff options
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/Kconfig | 18 | ||||
| -rw-r--r-- | arch/powerpc/kvm/Makefile | 12 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_exports.c | 5 |
3 files changed, 28 insertions, 7 deletions
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index d0665f231e6f..a96d7c32f785 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -39,6 +39,9 @@ config KVM_BOOK3S_PR_POSSIBLE select KVM_MMIO select MMU_NOTIFIER +config KVM_BOOK3S_HV_POSSIBLE + bool + config KVM_BOOK3S_32 tristate "KVM support for PowerPC book3s_32 processors" depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT @@ -59,6 +62,7 @@ config KVM_BOOK3S_64 depends on PPC_BOOK3S_64 select KVM_BOOK3S_64_HANDLER select KVM + select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE ---help--- Support running unmodified book3s_64 and book3s_32 guest kernels in virtual machines on book3s_64 host processors. @@ -71,6 +75,7 @@ config KVM_BOOK3S_64 config KVM_BOOK3S_64_HV bool "KVM support for POWER7 and PPC970 using hypervisor mode in host" depends on KVM_BOOK3S_64 + select KVM_BOOK3S_HV_POSSIBLE select MMU_NOTIFIER select CMA ---help--- @@ -89,9 +94,20 @@ config KVM_BOOK3S_64_HV If unsure, say N. config KVM_BOOK3S_64_PR - def_bool y + bool "KVM support without using hypervisor mode in host" depends on KVM_BOOK3S_64 && !KVM_BOOK3S_64_HV select KVM_BOOK3S_PR_POSSIBLE + ---help--- + Support running guest kernels in virtual machines on processors + without using hypervisor mode in the host, by running the + guest in user mode (problem state) and emulating all + privileged instructions and registers. + + This is not as fast as using hypervisor mode, but works on + machines where hypervisor mode is not available or not usable, + and can emulate processors that are different from the host + processor, including emulating 32-bit processors on a 64-bit + host. config KVM_BOOKE_HV bool diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 104e8dcf4336..fa17b337bb96 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -57,7 +57,6 @@ kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_HANDLER) := \ book3s_64_vio_hv.o kvm-book3s_64-objs-$(CONFIG_KVM_BOOK3S_64_PR) := \ - $(KVM)/coalesced_mmio.o \ fpu.o \ book3s_paired_singles.o \ book3s_pr.o \ @@ -69,10 +68,15 @@ kvm-book3s_64-objs-$(CONFIG_KVM_BOOK3S_64_PR) := \ book3s_64_mmu.o \ book3s_32_mmu.o -kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_PR) += \ +ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE +kvm-book3s_64-module-objs := \ + $(KVM)/coalesced_mmio.o + +kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_HANDLER) += \ book3s_rmhandlers.o +endif -kvm-book3s_64-objs-$(CONFIG_KVM_BOOK3S_64_HV) := \ +kvm-book3s_64-objs-$(CONFIG_KVM_BOOK3S_64_HV) += \ book3s_hv.o \ book3s_hv_interrupts.o \ book3s_64_mmu_hv.o @@ -91,7 +95,7 @@ kvm-book3s_64-builtin-objs-$(CONFIG_KVM_BOOK3S_64_HV) += \ kvm-book3s_64-objs-$(CONFIG_KVM_XICS) += \ book3s_xics.o -kvm-book3s_64-module-objs := \ +kvm-book3s_64-module-objs += \ $(KVM)/kvm_main.o \ $(KVM)/eventfd.o \ powerpc.o \ diff --git a/arch/powerpc/kvm/book3s_exports.c b/arch/powerpc/kvm/book3s_exports.c index 7057a02f0906..852989a9bad3 100644 --- a/arch/powerpc/kvm/book3s_exports.c +++ b/arch/powerpc/kvm/book3s_exports.c @@ -20,9 +20,10 @@ #include <linux/export.h> #include <asm/kvm_book3s.h> -#ifdef CONFIG_KVM_BOOK3S_64_HV +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE EXPORT_SYMBOL_GPL(kvmppc_hv_entry_trampoline); -#else +#endif +#ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE EXPORT_SYMBOL_GPL(kvmppc_entry_trampoline); EXPORT_SYMBOL_GPL(kvmppc_load_up_fpu); #ifdef CONFIG_ALTIVEC |
