arch/loongarch/kvm/main.c

File Facts

System

Linux kernel

Corpus path

arch/loongarch/kvm/main.c

Extension

.c

Size

13265 bytes

Lines

449

Domain

Architecture Layer

Bucket

arch/loongarch

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/err.h
• linux/module.h
• linux/kvm_host.h
• asm/cacheflush.h
• asm/cpufeature.h
• asm/kvm_csr.h
• asm/kvm_eiointc.h
• asm/kvm_pch_pic.h
• trace.h

Detected Declarations

• function get_gcsr_flag
• function set_gcsr_sw_flag
• function set_gcsr_hw_flag
• function kvm_init_gcsr_flag
• function kvm_update_vpid
• function kvm_check_vpid
• function kvm_init_vmcs
• function kvm_arch_dev_ioctl
• function kvm_arch_enable_virtualization_cpu
• function kvm_arch_disable_virtualization_cpu
• function kvm_loongarch_env_init
• function for_each_possible_cpu
• function kvm_loongarch_env_exit
• function kvm_loongarch_init
• function kvm_loongarch_exit
• module init kvm_loongarch_init

Annotated Snippet

module_init(kvm_loongarch_init);
module_exit(kvm_loongarch_exit);

#ifdef MODULE
static const struct cpu_feature kvm_feature[] = {
	{ .feature = cpu_feature(LOONGARCH_LVZ) },
	{},
};
MODULE_DEVICE_TABLE(cpu, kvm_feature);
#endif

Annotation

• Immediate include surface: `linux/err.h`, `linux/module.h`, `linux/kvm_host.h`, `asm/cacheflush.h`, `asm/cpufeature.h`, `asm/kvm_csr.h`, `asm/kvm_eiointc.h`, `asm/kvm_pch_pic.h`.
• Detected declarations: `function get_gcsr_flag`, `function set_gcsr_sw_flag`, `function set_gcsr_hw_flag`, `function kvm_init_gcsr_flag`, `function kvm_update_vpid`, `function kvm_check_vpid`, `function kvm_init_vmcs`, `function kvm_arch_dev_ioctl`, `function kvm_arch_enable_virtualization_cpu`, `function kvm_arch_disable_virtualization_cpu`.
• Atlas domain: Architecture Layer / arch/loongarch.
• Implementation status: integration implementation candidate.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.