diff options
Diffstat (limited to 'arch/s390/include/asm/kvm_host.h')
| -rw-r--r-- | arch/s390/include/asm/kvm_host.h | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index 727e7f7b33fd..3c254952d3a7 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -20,6 +20,7 @@ #include <linux/kvm_types.h> #include <linux/kvm_host.h> #include <linux/kvm.h> +#include <linux/seqlock.h> #include <asm/debug.h> #include <asm/cpu.h> #include <asm/fpu/api.h> @@ -552,6 +553,15 @@ struct kvm_vcpu_arch { unsigned long pfault_token; unsigned long pfault_select; unsigned long pfault_compare; + bool cputm_enabled; + /* + * The seqcount protects updates to cputm_start and sie_block.cputm, + * this way we can have non-blocking reads with consistent values. + * Only the owning VCPU thread (vcpu->cpu) is allowed to change these + * values and to start/stop/enable/disable cpu timer accounting. + */ + seqcount_t cputm_seqcount; + __u64 cputm_start; }; struct kvm_vm_stat { @@ -590,15 +600,11 @@ struct s390_io_adapter { #define S390_ARCH_FAC_MASK_SIZE_U64 \ (S390_ARCH_FAC_MASK_SIZE_BYTE / sizeof(u64)) -struct kvm_s390_fac { - /* facility list requested by guest */ - __u64 list[S390_ARCH_FAC_LIST_SIZE_U64]; - /* facility mask supported by kvm & hosting machine */ - __u64 mask[S390_ARCH_FAC_LIST_SIZE_U64]; -}; - struct kvm_s390_cpu_model { - struct kvm_s390_fac *fac; + /* facility mask supported by kvm & hosting machine */ + __u64 fac_mask[S390_ARCH_FAC_LIST_SIZE_U64]; + /* facility list requested by guest (in dma page) */ + __u64 *fac_list; struct cpuid cpu_id; unsigned short ibc; }; @@ -617,6 +623,16 @@ struct kvm_s390_crypto_cb { __u8 reserved80[128]; /* 0x0080 */ }; +/* + * sie_page2 has to be allocated as DMA because fac_list and crycb need + * 31bit addresses in the sie control block. + */ +struct sie_page2 { + __u64 fac_list[S390_ARCH_FAC_LIST_SIZE_U64]; /* 0x0000 */ + struct kvm_s390_crypto_cb crycb; /* 0x0800 */ + u8 reserved900[0x1000 - 0x900]; /* 0x0900 */ +} __packed; + struct kvm_arch{ void *sca; int use_esca; @@ -637,6 +653,7 @@ struct kvm_arch{ int ipte_lock_count; struct mutex ipte_mutex; spinlock_t start_stop_lock; + struct sie_page2 *sie_page2; struct kvm_s390_cpu_model model; struct kvm_s390_crypto crypto; u64 epoch; |