From: Thiago Jung Bauermann Date: Tue, 20 Aug 2019 02:13:12 +0000 (-0300) Subject: powerpc/pseries: Introduce option to build secure virtual machines X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=136bc0397ae21dbf63ca02e5775ad353a479cd2f;p=openwrt%2Fstaging%2Fblogic.git powerpc/pseries: Introduce option to build secure virtual machines Introduce CONFIG_PPC_SVM to control support for secure guests and include Ultravisor-related helpers when it is selected Signed-off-by: Thiago Jung Bauermann Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190820021326.6884-3-bauerman@linux.ibm.com --- diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h index e698f48cbc6d..49196d35e3bb 100644 --- a/arch/powerpc/include/asm/asm-prototypes.h +++ b/arch/powerpc/include/asm/asm-prototypes.h @@ -36,7 +36,7 @@ void __trace_hcall_entry(unsigned long opcode, unsigned long *args); void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf); /* Ultravisor */ -#ifdef CONFIG_PPC_POWERNV +#if defined(CONFIG_PPC_POWERNV) || defined(CONFIG_PPC_SVM) long ucall_norets(unsigned long opcode, ...); #else static inline long ucall_norets(unsigned long opcode, ...) diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 934e64b28894..c6ae0e7914bc 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -156,7 +156,9 @@ endif obj-$(CONFIG_EPAPR_PARAVIRT) += epapr_paravirt.o epapr_hcalls.o obj-$(CONFIG_KVM_GUEST) += kvm.o kvm_emul.o -obj-$(CONFIG_PPC_POWERNV) += ucall.o +ifneq ($(CONFIG_PPC_POWERNV)$(CONFIG_PPC_SVM),) +obj-y += ucall.o +endif # Disable GCOV, KCOV & sanitizers in odd or sensitive code GCOV_PROFILE_prom_init.o := n diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index f7b484f55553..d09deb05bb66 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -145,3 +145,14 @@ config PAPR_SCM tristate "Support for the PAPR Storage Class Memory interface" help Enable access to hypervisor provided storage class memory. + +config PPC_SVM + bool "Secure virtual machine (SVM) support for POWER" + depends on PPC_PSERIES + help + There are certain POWER platforms which support secure guests using + the Protected Execution Facility, with the help of an Ultravisor + executing below the hypervisor layer. This enables support for + those guests. + + If unsure, say "N".