diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 1 | ||||
| -rw-r--r-- | arch/s390/mm/init.c | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 34371539a9b9..4a2a12be04c9 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -810,6 +810,7 @@ menu "Virtualization" config PROTECTED_VIRTUALIZATION_GUEST def_bool n prompt "Protected virtualization guest support" + select ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS help Select this option, if you want to be able to run this kernel as a protected virtualization KVM guest. diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index d3ddb4361361..284939f9661c 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -46,6 +46,7 @@ #include <asm/kasan.h> #include <asm/dma-mapping.h> #include <asm/uv.h> +#include <linux/virtio_config.h> pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); @@ -162,6 +163,16 @@ bool force_dma_unencrypted(struct device *dev) return is_prot_virt_guest(); } +#ifdef CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS + +int arch_has_restricted_virtio_memory_access(void) +{ + return is_prot_virt_guest(); +} +EXPORT_SYMBOL(arch_has_restricted_virtio_memory_access); + +#endif + /* protected virtualization */ static void pv_init(void) { |