arch/riscv/include/asm/kvm_vcpu_fp.h

Source file repositories/reference/linux-study-clean/arch/riscv/include/asm/kvm_vcpu_fp.h

File Facts

System: Linux kernel
Corpus path: arch/riscv/include/asm/kvm_vcpu_fp.h
Extension: .h
Size: 1728 bytes
Lines: 60
Domain: Architecture Layer
Bucket: arch/riscv
Inferred role: Architecture Layer: implementation source
Status: source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

linux/types.h

Detected Declarations

struct kvm_cpu_context
function kvm_riscv_vcpu_fp_reset

Annotated Snippet

#ifndef __KVM_VCPU_RISCV_FP_H
#define __KVM_VCPU_RISCV_FP_H

#include <linux/types.h>

struct kvm_cpu_context;

#ifdef CONFIG_FPU
void __kvm_riscv_fp_f_save(struct kvm_cpu_context *context);
void __kvm_riscv_fp_f_restore(struct kvm_cpu_context *context);
void __kvm_riscv_fp_d_save(struct kvm_cpu_context *context);
void __kvm_riscv_fp_d_restore(struct kvm_cpu_context *context);

void kvm_riscv_vcpu_fp_reset(struct kvm_vcpu *vcpu);
void kvm_riscv_vcpu_guest_fp_save(struct kvm_cpu_context *cntx,
				  const unsigned long *isa);
void kvm_riscv_vcpu_guest_fp_restore(struct kvm_cpu_context *cntx,
				     const unsigned long *isa);
void kvm_riscv_vcpu_host_fp_save(struct kvm_cpu_context *cntx);
void kvm_riscv_vcpu_host_fp_restore(struct kvm_cpu_context *cntx);
#else
static inline void kvm_riscv_vcpu_fp_reset(struct kvm_vcpu *vcpu)
{
}
static inline void kvm_riscv_vcpu_guest_fp_save(struct kvm_cpu_context *cntx,
						const unsigned long *isa)
{
}
static inline void kvm_riscv_vcpu_guest_fp_restore(
					struct kvm_cpu_context *cntx,
					const unsigned long *isa)
{
}
static inline void kvm_riscv_vcpu_host_fp_save(struct kvm_cpu_context *cntx)
{
}
static inline void kvm_riscv_vcpu_host_fp_restore(
					struct kvm_cpu_context *cntx)
{
}
#endif

int kvm_riscv_vcpu_get_reg_fp(struct kvm_vcpu *vcpu,
			      const struct kvm_one_reg *reg,
			      unsigned long rtype);
int kvm_riscv_vcpu_set_reg_fp(struct kvm_vcpu *vcpu,
			      const struct kvm_one_reg *reg,
			      unsigned long rtype);

#endif

Annotation

Immediate include surface: `linux/types.h`.
Detected declarations: `struct kvm_cpu_context`, `function kvm_riscv_vcpu_fp_reset`.
Atlas domain: Architecture Layer / arch/riscv.
Implementation status: source implementation candidate.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.