diff options
Diffstat (limited to 'include/asm-generic/mshyperv.h')
| -rw-r--r-- | include/asm-generic/mshyperv.h | 79 |
1 files changed, 71 insertions, 8 deletions
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index 8fe7aaab2599..ccccb1cbf7df 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -6,9 +6,8 @@ * independent. See arch/<arch>/include/asm/mshyperv.h for definitions * that are specific to architecture <arch>. * - * Definitions that are specified in the Hyper-V Top Level Functional - * Spec (TLFS) should not go in this file, but should instead go in - * hyperv-tlfs.h. + * Definitions that are derived from Hyper-V code or headers should not go in + * this file, but should instead go in the relevant files in include/hyperv. * * Copyright (C) 2019, Microsoft, Inc. * @@ -25,13 +24,19 @@ #include <linux/cpumask.h> #include <linux/nmi.h> #include <asm/ptrace.h> -#include <asm/hyperv-tlfs.h> +#include <hyperv/hvhdk.h> #define VTPM_BASE_ADDRESS 0xfed40000 +enum hv_partition_type { + HV_PARTITION_TYPE_GUEST, + HV_PARTITION_TYPE_ROOT, +}; + struct ms_hyperv_info { u32 features; u32 priv_high; + u32 ext_features; u32 misc_features; u32 hints; u32 nested_features; @@ -59,15 +64,32 @@ struct ms_hyperv_info { }; extern struct ms_hyperv_info ms_hyperv; extern bool hv_nested; +extern u64 hv_current_partition_id; +extern enum hv_partition_type hv_curr_partition_type; extern void * __percpu *hyperv_pcpu_input_arg; extern void * __percpu *hyperv_pcpu_output_arg; -extern u64 hv_do_hypercall(u64 control, void *inputaddr, void *outputaddr); -extern u64 hv_do_fast_hypercall8(u16 control, u64 input8); +u64 hv_do_hypercall(u64 control, void *inputaddr, void *outputaddr); +u64 hv_do_fast_hypercall8(u16 control, u64 input8); +u64 hv_do_fast_hypercall16(u16 control, u64 input1, u64 input2); + bool hv_isolation_type_snp(void); bool hv_isolation_type_tdx(void); +/* + * On architectures where Hyper-V doesn't support AEOI (e.g., ARM64), + * it doesn't provide a recommendation flag and AEOI must be disabled. + */ +static inline bool hv_recommend_using_aeoi(void) +{ +#ifdef HV_DEPRECATING_AEOI_RECOMMENDED + return !(ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED); +#else + return false; +#endif +} + static inline struct hv_proximity_domain_info hv_numa_node_to_pxm_info(int node) { struct hv_proximity_domain_info pxm_info = {}; @@ -186,12 +208,11 @@ void hv_setup_kexec_handler(void (*handler)(void)); void hv_remove_kexec_handler(void); void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs)); void hv_remove_crash_handler(void); +void hv_setup_mshv_handler(void (*handler)(void)); extern int vmbus_interrupt; extern int vmbus_irq; -extern bool hv_root_partition; - #if IS_ENABLED(CONFIG_HYPERV) /* * Hypervisor's notion of virtual processor ID is different from @@ -208,10 +229,12 @@ extern u64 (*hv_read_reference_counter)(void); #define VP_INVAL U32_MAX int __init hv_common_init(void); +void __init hv_get_partition_id(void); void __init hv_common_free(void); void __init ms_hyperv_late_init(void); int hv_common_cpu_init(unsigned int cpu); int hv_common_cpu_die(unsigned int cpu); +void hv_identify_partition_type(void); void *hv_alloc_hyperv_page(void); void *hv_alloc_hyperv_zeroed_page(void); @@ -292,6 +315,20 @@ static inline int cpumask_to_vpset_skip(struct hv_vpset *vpset, return __cpumask_to_vpset(vpset, cpus, func); } +#define _hv_status_fmt(fmt) "%s: Hyper-V status: %#x = %s: " fmt +#define hv_status_printk(level, status, fmt, ...) \ +do { \ + u64 __status = (status); \ + pr_##level(_hv_status_fmt(fmt), __func__, hv_result(__status), \ + hv_result_to_string(__status), ##__VA_ARGS__); \ +} while (0) +#define hv_status_err(status, fmt, ...) \ + hv_status_printk(err, status, fmt, ##__VA_ARGS__) +#define hv_status_debug(status, fmt, ...) \ + hv_status_printk(debug, status, fmt, ##__VA_ARGS__) + +const char *hv_result_to_string(u64 hv_status); +int hv_result_to_errno(u64 status); void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die); bool hv_is_hyperv_initialized(void); bool hv_is_hibernation_supported(void); @@ -304,6 +341,7 @@ void hyperv_cleanup(void); bool hv_query_ext_cap(u64 cap_query); void hv_setup_dma_ops(struct device *dev, bool coherent); #else /* CONFIG_HYPERV */ +static inline void hv_identify_partition_type(void) {} static inline bool hv_is_hyperv_initialized(void) { return false; } static inline bool hv_is_hibernation_supported(void) { return false; } static inline void hyperv_cleanup(void) {} @@ -315,4 +353,29 @@ static inline enum hv_isolation_type hv_get_isolation_type(void) } #endif /* CONFIG_HYPERV */ +#if IS_ENABLED(CONFIG_MSHV_ROOT) +static inline bool hv_root_partition(void) +{ + return hv_curr_partition_type == HV_PARTITION_TYPE_ROOT; +} +int hv_call_deposit_pages(int node, u64 partition_id, u32 num_pages); +int hv_call_add_logical_proc(int node, u32 lp_index, u32 acpi_id); +int hv_call_create_vp(int node, u64 partition_id, u32 vp_index, u32 flags); + +#else /* CONFIG_MSHV_ROOT */ +static inline bool hv_root_partition(void) { return false; } +static inline int hv_call_deposit_pages(int node, u64 partition_id, u32 num_pages) +{ + return -EOPNOTSUPP; +} +static inline int hv_call_add_logical_proc(int node, u32 lp_index, u32 acpi_id) +{ + return -EOPNOTSUPP; +} +static inline int hv_call_create_vp(int node, u64 partition_id, u32 vp_index, u32 flags) +{ + return -EOPNOTSUPP; +} +#endif /* CONFIG_MSHV_ROOT */ + #endif |