2026-07-28 12:00:02 +08:00
|
|
|
|
#ifndef UTSM_VMM_H
|
|
|
|
|
|
#define UTSM_VMM_H
|
|
|
|
|
|
|
|
|
|
|
|
#include <utsm/types.h>
|
|
|
|
|
|
|
|
|
|
|
|
/* VMM 顶层 API：协调 VMX/EPT/VMCS/VMEXIT，启动 guest。
|
|
|
|
|
|
*
|
|
|
|
|
|
* Phase 1.1（当前）：vmm_init() 完成 VMX root 启用 + EPT 初始化，
|
|
|
|
|
|
* vmm_self_test() 启动一个最小 guest（HLT 指令）验证 VMEXIT 路径。
|
|
|
|
|
|
*
|
|
|
|
|
|
* Phase 1.2+：vmm_launch_linux() 加载并启动 Linux 6.6 LTS guest。
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
/* ===== Guest register save area =====
|
|
|
|
|
|
*
|
|
|
|
|
|
* VMCS does NOT save guest GPRs (RAX-R15) on VM-Exit. The assembly VM-Exit
|
|
|
|
|
|
* handler (vmexit_asm.S) saves all 16 GPRs into this structure before
|
|
|
|
|
|
* calling the C dispatcher, and restores them before vmresume.
|
|
|
|
|
|
*
|
|
|
|
|
|
* C handlers (e.g. hypercall.c) can read guest arguments from this structure
|
|
|
|
|
|
* and write return values (e.g. g_guest_regs.rax = retval) which will be
|
|
|
|
|
|
* loaded into the CPU before vmresume resumes the guest. */
|
|
|
|
|
|
struct vmexit_guest_regs {
|
|
|
|
|
|
u64 rax;
|
|
|
|
|
|
u64 rbx;
|
|
|
|
|
|
u64 rcx;
|
|
|
|
|
|
u64 rdx;
|
|
|
|
|
|
u64 rsi;
|
|
|
|
|
|
u64 rdi;
|
|
|
|
|
|
u64 rbp;
|
|
|
|
|
|
u64 r8;
|
|
|
|
|
|
u64 r9;
|
|
|
|
|
|
u64 r10;
|
|
|
|
|
|
u64 r11;
|
|
|
|
|
|
u64 r12;
|
|
|
|
|
|
u64 r13;
|
|
|
|
|
|
u64 r14;
|
|
|
|
|
|
u64 r15;
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/* Global guest register save area (referenced by vmexit_asm.S).
|
|
|
|
|
|
* Non-static: shared between vmm.c, vmexit.c, hypercall.c, and vmexit_asm.S. */
|
|
|
|
|
|
extern volatile struct vmexit_guest_regs g_guest_regs;
|
|
|
|
|
|
|
2026-07-28 14:35:14 +08:00
|
|
|
|
/* ===== Linux guest park-and-resume 状态 =====
|
|
|
|
|
|
*
|
|
|
|
|
|
* g_linux_guest_active: 1 = 当前运行的 guest 是 Linux guest。
|
|
|
|
|
|
* handle_hlt 检查此标志：Linux guest HLT 时 park（推进 RIP，exit-to-host），
|
|
|
|
|
|
* self-test guest HLT 时 terminate。
|
|
|
|
|
|
* g_guest_parked: 1 = Linux guest 已 HLT 驻留，可被 linux_resume() 唤醒。
|
2026-08-09 22:14:01 +08:00
|
|
|
|
* linux_compat_service 通过此标志判断 guest 是否就绪。
|
|
|
|
|
|
*
|
|
|
|
|
|
* g_xj380_guest_active: 1 = 当前运行的 guest 是 OpenXJ380 guest。
|
|
|
|
|
|
* handle_hlt 检查此标志：XJ380 guest HLT 时推进 RIP 并立即 vmresume
|
|
|
|
|
|
* （继续执行，不 park 不 terminate）。同一时刻只有一个 guest active。 */
|
2026-07-28 14:35:14 +08:00
|
|
|
|
extern volatile int g_linux_guest_active;
|
|
|
|
|
|
extern volatile int g_guest_parked;
|
2026-08-09 22:14:01 +08:00
|
|
|
|
extern volatile int g_xj380_guest_active;
|
2026-07-28 14:35:14 +08:00
|
|
|
|
|
|
|
|
|
|
/* ===== VM-Exit host 恢复点（vmm.c 定义，vmm.c / linux_boot.c / linux_resume.c 共用） =====
|
|
|
|
|
|
*
|
|
|
|
|
|
* g_saved_host_rsp: vmlaunch/vmresume 前保存的 host RSP。VM-Exit 处理器
|
|
|
|
|
|
* 终止 guest 时恢复此 RSP 并 jmp 到 g_saved_return_rip。
|
|
|
|
|
|
* g_saved_return_rip: vmlaunch/vmresume 后的返回地址（post_guest / post_resume 标签）。
|
|
|
|
|
|
* g_guest_terminated: 1 = guest 已终止（不再 vmresume）。dispatch 返回 0 时置位。
|
|
|
|
|
|
* g_last_exit_reason: 最近一次 VM-Exit 的 reason（vmexit_asm.S 路径写入）。
|
|
|
|
|
|
*
|
|
|
|
|
|
* 这些符号必须是非 static 全局变量，因为 vmexit_asm.S 通过 RIP 相对寻址引用。 */
|
|
|
|
|
|
extern volatile u64 g_saved_host_rsp;
|
|
|
|
|
|
extern volatile u64 g_saved_return_rip;
|
|
|
|
|
|
extern volatile int g_guest_terminated;
|
|
|
|
|
|
extern volatile u64 g_last_exit_reason;
|
|
|
|
|
|
|
2026-07-28 12:00:02 +08:00
|
|
|
|
/* ===== VMM API ===== */
|
|
|
|
|
|
|
|
|
|
|
|
/* 初始化 VMM：VMX root 模式 + EPT 表 + 分配 VMCS。
|
|
|
|
|
|
* 返回 0 成功，负值失败。 */
|
|
|
|
|
|
int vmm_init(void);
|
|
|
|
|
|
|
|
|
|
|
|
/* 关闭 VMM：vmxoff。 */
|
|
|
|
|
|
void vmm_shutdown(void);
|
|
|
|
|
|
|
|
|
|
|
|
/* Phase 1.1 自检：启动最小 guest 验证 VMX 路径。
|
|
|
|
|
|
* guest 代码为内嵌的 HLT 指令，预期触发 HLT VMEXIT。
|
|
|
|
|
|
* 返回 0 成功。 */
|
|
|
|
|
|
int vmm_self_test(void);
|
|
|
|
|
|
|
|
|
|
|
|
/* VMM 状态查询 */
|
|
|
|
|
|
int vmm_is_ready(void);
|
|
|
|
|
|
u64 vmm_get_eptp(void);
|
2026-09-06 10:48:07 +08:00
|
|
|
|
/* P8.5: VMCS 物理地址（linux_launch 前 VMCLEAR+VMPTRLD 用） */
|
|
|
|
|
|
u64 vmm_get_vmcs_phys(void);
|
2026-07-28 12:00:02 +08:00
|
|
|
|
|
2026-10-01 23:13:42 +08:00
|
|
|
|
/* Walk the current guest CR3 to translate GVA→GPA. Returns 0 if unmapped. */
|
|
|
|
|
|
u64 vmx_guest_gva_to_gpa(u64 gva);
|
|
|
|
|
|
|
2026-07-28 12:00:02 +08:00
|
|
|
|
#endif
|
