/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/arch/x86/include/asm
Edit: /usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/arch/x86/include/asm/mshyperv.h (10142B)
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_MSHYPER_H
#define _ASM_X86_MSHYPER_H
#include
#include
#include
#include
#include
#include
#include
#include
/*
* Hyper-V always provides a single IO-APIC at this MMIO address.
* Ideally, the value should be looked up in ACPI tables, but it
* is needed for mapping the IO-APIC early in boot on Confidential
* VMs, before ACPI functions can be used.
*/
#define HV_IOAPIC_BASE_ADDRESS 0xfec00000
union hv_ghcb;
DECLARE_STATIC_KEY_FALSE(isolation_type_snp);
DECLARE_STATIC_KEY_FALSE(isolation_type_tdx);
typedef int (*hyperv_fill_flush_list_func)(
struct hv_guest_mapping_flush_list *flush,
void *data);
#define hv_get_raw_timer() rdtsc_ordered()
void hyperv_callback_vector(void);
void hyperv_reenlightenment_vector(void);
#ifdef CONFIG_TRACING
#define trace_hyperv_callback_vector hyperv_callback_vector
#endif
void hyperv_vector_handler(struct pt_regs *regs);
/*
* Routines for stimer0 Direct Mode handling.
* On x86/x64, there are no percpu actions to take.
*/
void hv_stimer0_vector_handler(struct pt_regs *regs);
void hv_stimer0_callback_vector(void);
#if IS_ENABLED(CONFIG_HYPERV)
extern int hyperv_init_cpuhp;
extern bool hyperv_paravisor_present;
extern void *hv_hypercall_pg;
extern u64 hv_current_partition_id;
extern union hv_ghcb * __percpu *hv_ghcb_pg;
bool hv_isolation_type_snp(void);
bool hv_isolation_type_tdx(void);
u64 hv_tdx_hypercall(u64 control, u64 param1, u64 param2);
/*
* DEFAULT INIT GPAT and SEGMENT LIMIT value in struct VMSA
* to start AP in enlightened SEV guest.
*/
#define HV_AP_INIT_GPAT_DEFAULT 0x0007040600070406ULL
#define HV_AP_SEGMENT_LIMIT 0xffffffff
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);
/*
* If the hypercall involves no input or output parameters, the hypervisor
* ignores the corresponding GPA pointer.
*/
static inline u64 hv_do_hypercall(u64 control, void *input, void *output)
{
u64 input_address = input ? virt_to_phys(input) : 0;
u64 output_address = output ? virt_to_phys(output) : 0;
u64 hv_status;
#ifdef CONFIG_X86_64
if (hv_isolation_type_tdx() && !hyperv_paravisor_present)
return hv_tdx_hypercall(control, input_address, output_address);
if (hv_isolation_type_snp() && !hyperv_paravisor_present) {
__asm__ __volatile__("mov %4, %%r8\n"
"vmmcall"
: "=a" (hv_status), ASM_CALL_CONSTRAINT,
"+c" (control), "+d" (input_address)
: "r" (output_address)
: "cc", "memory", "r8", "r9", "r10", "r11");
return hv_status;
}
if (!hv_hypercall_pg)
return U64_MAX;
__asm__ __volatile__("mov %4, %%r8\n"
CALL_NOSPEC
: "=a" (hv_status), ASM_CALL_CONSTRAINT,
"+c" (control), "+d" (input_address)
: "r" (output_address),
THUNK_TARGET(hv_hypercall_pg)
: "cc", "memory", "r8", "r9", "r10", "r11");
#else
u32 input_address_hi = upper_32_bits(input_address);
u32 input_address_lo = lower_32_bits(input_address);
u32 output_address_hi = upper_32_bits(output_address);
u32 output_address_lo = lower_32_bits(output_address);
if (!hv_hypercall_pg)
return U64_MAX;
__asm__ __volatile__(CALL_NOSPEC
: "=A" (hv_status),
"+c" (input_address_lo), ASM_CALL_CONSTRAINT
: "A" (control),
"b" (input_address_hi),
"D"(output_address_hi), "S"(output_address_lo),
THUNK_TARGET(hv_hypercall_pg)
: "cc", "memory");
#endif /* !x86_64 */
return hv_status;
}
/* Hypercall to the L0 hypervisor */
static inline u64 hv_do_nested_hypercall(u64 control, void *input, void *output)
{
return hv_do_hypercall(control | HV_HYPERCALL_NESTED, input, output);
}
/* Fast hypercall with 8 bytes of input and no output */
static inline u64 _hv_do_fast_hypercall8(u64 control, u64 input1)
{
u64 hv_status;
#ifdef CONFIG_X86_64
if (hv_isolation_type_tdx() && !hyperv_paravisor_present)
return hv_tdx_hypercall(control, input1, 0);
if (hv_isolation_type_snp() && !hyperv_paravisor_present) {
__asm__ __volatile__(
"vmmcall"
: "=a" (hv_status), ASM_CALL_CONSTRAINT,
"+c" (control), "+d" (input1)
:: "cc", "r8", "r9", "r10", "r11");
} else {
__asm__ __volatile__(CALL_NOSPEC
: "=a" (hv_status), ASM_CALL_CONSTRAINT,
"+c" (control), "+d" (input1)
: THUNK_TARGET(hv_hypercall_pg)
: "cc", "r8", "r9", "r10", "r11");
}
#else
{
u32 input1_hi = upper_32_bits(input1);
u32 input1_lo = lower_32_bits(input1);
__asm__ __volatile__ (CALL_NOSPEC
: "=A"(hv_status),
"+c"(input1_lo),
ASM_CALL_CONSTRAINT
: "A" (control),
"b" (input1_hi),
THUNK_TARGET(hv_hypercall_pg)
: "cc", "edi", "esi");
}
#endif
return hv_status;
}
static inline u64 hv_do_fast_hypercall8(u16 code, u64 input1)
{
u64 control = (u64)code | HV_HYPERCALL_FAST_BIT;
return _hv_do_fast_hypercall8(control, input1);
}
static inline u64 hv_do_fast_nested_hypercall8(u16 code, u64 input1)
{
u64 control = (u64)code | HV_HYPERCALL_FAST_BIT | HV_HYPERCALL_NESTED;
return _hv_do_fast_hypercall8(control, input1);
}
/* Fast hypercall with 16 bytes of input */
static inline u64 _hv_do_fast_hypercall16(u64 control, u64 input1, u64 input2)
{
u64 hv_status;
#ifdef CONFIG_X86_64
if (hv_isolation_type_tdx() && !hyperv_paravisor_present)
return hv_tdx_hypercall(control, input1, input2);
if (hv_isolation_type_snp() && !hyperv_paravisor_present) {
__asm__ __volatile__("mov %4, %%r8\n"
"vmmcall"
: "=a" (hv_status), ASM_CALL_CONSTRAINT,
"+c" (control), "+d" (input1)
: "r" (input2)
: "cc", "r8", "r9", "r10", "r11");
} else {
__asm__ __volatile__("mov %4, %%r8\n"
CALL_NOSPEC
: "=a" (hv_status), ASM_CALL_CONSTRAINT,
"+c" (control), "+d" (input1)
: "r" (input2),
THUNK_TARGET(hv_hypercall_pg)
: "cc", "r8", "r9", "r10", "r11");
}
#else
{
u32 input1_hi = upper_32_bits(input1);
u32 input1_lo = lower_32_bits(input1);
u32 input2_hi = upper_32_bits(input2);
u32 input2_lo = lower_32_bits(input2);
__asm__ __volatile__ (CALL_NOSPEC
: "=A"(hv_status),
"+c"(input1_lo), ASM_CALL_CONSTRAINT
: "A" (control), "b" (input1_hi),
"D"(input2_hi), "S"(input2_lo),
THUNK_TARGET(hv_hypercall_pg)
: "cc");
}
#endif
return hv_status;
}
static inline u64 hv_do_fast_hypercall16(u16 code, u64 input1, u64 input2)
{
u64 control = (u64)code | HV_HYPERCALL_FAST_BIT;
return _hv_do_fast_hypercall16(control, input1, input2);
}
static inline u64 hv_do_fast_nested_hypercall16(u16 code, u64 input1, u64 input2)
{
u64 control = (u64)code | HV_HYPERCALL_FAST_BIT | HV_HYPERCALL_NESTED;
return _hv_do_fast_hypercall16(control, input1, input2);
}
extern struct hv_vp_assist_page **hv_vp_assist_page;
static inline struct hv_vp_assist_page *hv_get_vp_assist_page(unsigned int cpu)
{
if (!hv_vp_assist_page)
return NULL;
return hv_vp_assist_page[cpu];
}
void __init hyperv_init(void);
void hyperv_setup_mmu_ops(void);
void set_hv_tscchange_cb(void (*cb)(void));
void clear_hv_tscchange_cb(void);
void hyperv_stop_tsc_emulation(void);
int hyperv_flush_guest_mapping(u64 as);
int hyperv_flush_guest_mapping_range(u64 as,
hyperv_fill_flush_list_func fill_func, void *data);
int hyperv_fill_flush_guest_mapping_list(
struct hv_guest_mapping_flush_list *flush,
u64 start_gfn, u64 end_gfn);
#ifdef CONFIG_X86_64
void hv_apic_init(void);
void __init hv_init_spinlocks(void);
bool hv_vcpu_is_preempted(int vcpu);
#else
static inline void hv_apic_init(void) {}
#endif
struct irq_domain *hv_create_pci_msi_domain(void);
#ifdef CONFIG_AMD_MEM_ENCRYPT
bool hv_ghcb_negotiate_protocol(void);
void __noreturn hv_ghcb_terminate(unsigned int set, unsigned int reason);
int hv_snp_boot_ap(int cpu, unsigned long start_ip);
#else
static inline bool hv_ghcb_negotiate_protocol(void) { return false; }
static inline void hv_ghcb_terminate(unsigned int set, unsigned int reason) {}
static inline int hv_snp_boot_ap(int cpu, unsigned long start_ip) { return 0; }
#endif
#if defined(CONFIG_AMD_MEM_ENCRYPT) || defined(CONFIG_INTEL_TDX_GUEST)
void hv_vtom_init(void);
void hv_ivm_msr_write(u64 msr, u64 value);
void hv_ivm_msr_read(u64 msr, u64 *value);
#else
static inline void hv_vtom_init(void) {}
static inline void hv_ivm_msr_write(u64 msr, u64 value) {}
static inline void hv_ivm_msr_read(u64 msr, u64 *value) {}
#endif
static inline bool hv_is_synic_reg(unsigned int reg)
{
return (reg >= HV_REGISTER_SCONTROL) &&
(reg <= HV_REGISTER_SINT15);
}
static inline bool hv_is_sint_reg(unsigned int reg)
{
return (reg >= HV_REGISTER_SINT0) &&
(reg <= HV_REGISTER_SINT15);
}
u64 hv_get_register(unsigned int reg);
void hv_set_register(unsigned int reg, u64 value);
u64 hv_get_non_nested_register(unsigned int reg);
void hv_set_non_nested_register(unsigned int reg, u64 value);
#else /* CONFIG_HYPERV */
static inline void hyperv_init(void) {}
static inline void hyperv_setup_mmu_ops(void) {}
static inline void set_hv_tscchange_cb(void (*cb)(void)) {}
static inline void clear_hv_tscchange_cb(void) {}
static inline void hyperv_stop_tsc_emulation(void) {};
static inline struct hv_vp_assist_page *hv_get_vp_assist_page(unsigned int cpu)
{
return NULL;
}
static inline int hyperv_flush_guest_mapping(u64 as) { return -1; }
static inline int hyperv_flush_guest_mapping_range(u64 as,
hyperv_fill_flush_list_func fill_func, void *data)
{
return -1;
}
static inline void hv_set_register(unsigned int reg, u64 value) { }
static inline u64 hv_get_register(unsigned int reg) { return 0; }
static inline void hv_set_non_nested_register(unsigned int reg, u64 value) { }
static inline u64 hv_get_non_nested_register(unsigned int reg) { return 0; }
#endif /* CONFIG_HYPERV */
#include
#endif