/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __SVM_H #define __SVM_H #include #include /* * 32-bit intercept words in the VMCB Control Area, starting * at Byte offset 000h. */ enum intercept_words { INTERCEPT_CR = 0, INTERCEPT_DR, INTERCEPT_EXCEPTION, MAX_INTERCEPT, }; enum { /* Byte offset 000h (word 0) */ INTERCEPT_CR0_READ = 0, INTERCEPT_CR3_READ = 3, INTERCEPT_CR4_READ = 4, INTERCEPT_CR8_READ = 8, INTERCEPT_CR0_WRITE = 16, INTERCEPT_CR3_WRITE = 16 + 3, INTERCEPT_CR4_WRITE = 16 + 4, INTERCEPT_CR8_WRITE = 16 + 8, /* Byte offset 004h (word 1) */ INTERCEPT_DR0_READ = 32, INTERCEPT_DR1_READ, INTERCEPT_DR2_READ, INTERCEPT_DR3_READ, INTERCEPT_DR4_READ, INTERCEPT_DR5_READ, INTERCEPT_DR6_READ, INTERCEPT_DR7_READ, INTERCEPT_DR0_WRITE = 48, INTERCEPT_DR1_WRITE, INTERCEPT_DR2_WRITE, INTERCEPT_DR3_WRITE, INTERCEPT_DR4_WRITE, INTERCEPT_DR5_WRITE, INTERCEPT_DR6_WRITE, INTERCEPT_DR7_WRITE, /* Byte offset 008h (word 2) */ INTERCEPT_EXCEPTION_OFFSET = 64, }; enum { INTERCEPT_INTR, INTERCEPT_NMI, INTERCEPT_SMI, INTERCEPT_INIT, INTERCEPT_VINTR, INTERCEPT_SELECTIVE_CR0, INTERCEPT_STORE_IDTR, INTERCEPT_STORE_GDTR, INTERCEPT_STORE_LDTR, INTERCEPT_STORE_TR, INTERCEPT_LOAD_IDTR, INTERCEPT_LOAD_GDTR, INTERCEPT_LOAD_LDTR, INTERCEPT_LOAD_TR, INTERCEPT_RDTSC, INTERCEPT_RDPMC, INTERCEPT_PUSHF, INTERCEPT_POPF, INTERCEPT_CPUID, INTERCEPT_RSM, INTERCEPT_IRET, INTERCEPT_INTn, INTERCEPT_INVD, INTERCEPT_PAUSE, INTERCEPT_HLT, INTERCEPT_INVLPG, INTERCEPT_INVLPGA, INTERCEPT_IOIO_PROT, INTERCEPT_MSR_PROT, INTERCEPT_TASK_SWITCH, INTERCEPT_FERR_FREEZE, INTERCEPT_SHUTDOWN, INTERCEPT_VMRUN, INTERCEPT_VMMCALL, INTERCEPT_VMLOAD, INTERCEPT_VMSAVE, INTERCEPT_STGI, INTERCEPT_CLGI, INTERCEPT_SKINIT, INTERCEPT_RDTSCP, INTERCEPT_ICEBP, INTERCEPT_WBINVD, INTERCEPT_MONITOR, INTERCEPT_MWAIT, INTERCEPT_MWAIT_COND, INTERCEPT_XSETBV, INTERCEPT_RDPRU, }; struct __attribute__ ((__packed__)) vmcb_control_area { u32 intercepts[MAX_INTERCEPT]; u64 intercept; u8 reserved_1[40]; u16 pause_filter_thresh; u16 pause_filter_count; u64 iopm_base_pa; u64 msrpm_base_pa; u64 tsc_offset; u32 asid; u8 tlb_ctl; u8 reserved_2[3]; u32 int_ctl; u32 int_vector; u32 int_state; u8 reserved_3[4]; u32 exit_code; u32 exit_code_hi; u64 exit_info_1; u64 exit_info_2; u32 exit_int_info; u32 exit_int_info_err; u64 nested_ctl; u64 avic_vapic_bar; u8 reserved_4[8]; u32 event_inj; u32 event_inj_err; u64 nested_cr3; u64 virt_ext; u32 clean; u32 reserved_5; u64 next_rip; u8 insn_len; u8 insn_bytes[15]; u64 avic_backing_page; /* Offset 0xe0 */ u8 reserved_6[8]; /* Offset 0xe8 */ u64 avic_logical_id; /* Offset 0xf0 */ u64 avic_physical_id; /* Offset 0xf8 */ }; #define TLB_CONTROL_DO_NOTHING 0 #define TLB_CONTROL_FLUSH_ALL_ASID 1 #define TLB_CONTROL_FLUSH_ASID 3 #define TLB_CONTROL_FLUSH_ASID_LOCAL 7 #define V_TPR_MASK 0x0f #define V_IRQ_SHIFT 8 #define V_IRQ_MASK (1 << V_IRQ_SHIFT) #define V_GIF_SHIFT 9 #define V_GIF_MASK (1 << V_GIF_SHIFT) #define V_INTR_PRIO_SHIFT 16 #define V_INTR_PRIO_MASK (0x0f << V_INTR_PRIO_SHIFT) #define V_IGN_TPR_SHIFT 20 #define V_IGN_TPR_MASK (1 << V_IGN_TPR_SHIFT) #define V_INTR_MASKING_SHIFT 24 #define V_INTR_MASKING_MASK (1 << V_INTR_MASKING_SHIFT) #define V_GIF_ENABLE_SHIFT 25 #define V_GIF_ENABLE_MASK (1 << V_GIF_ENABLE_SHIFT) #define AVIC_ENABLE_SHIFT 31 #define AVIC_ENABLE_MASK (1 << AVIC_ENABLE_SHIFT) #define LBR_CTL_ENABLE_MASK BIT_ULL(0) #define VIRTUAL_VMLOAD_VMSAVE_ENABLE_MASK BIT_ULL(1) #define SVM_INTERRUPT_SHADOW_MASK 1 #define SVM_IOIO_STR_SHIFT 2 #define SVM_IOIO_REP_SHIFT 3 #define SVM_IOIO_SIZE_SHIFT 4 #define SVM_IOIO_ASIZE_SHIFT 7 #define SVM_IOIO_TYPE_MASK 1 #define SVM_IOIO_STR_MASK (1 << SVM_IOIO_STR_SHIFT) #define SVM_IOIO_REP_MASK (1 << SVM_IOIO_REP_SHIFT) #define SVM_IOIO_SIZE_MASK (7 << SVM_IOIO_SIZE_SHIFT) #define SVM_IOIO_ASIZE_MASK (7 << SVM_IOIO_ASIZE_SHIFT) #define SVM_VM_CR_VALID_MASK 0x001fULL #define SVM_VM_CR_SVM_LOCK_MASK 0x0008ULL #define SVM_VM_CR_SVM_DIS_MASK 0x0010ULL #define SVM_NESTED_CTL_NP_ENABLE BIT(0) #define SVM_NESTED_CTL_SEV_ENABLE BIT(1) struct vmcb_seg { u16 selector; u16 attrib; u32 limit; u64 base; } __packed; struct vmcb_save_area { struct vmcb_seg es; struct vmcb_seg cs; struct vmcb_seg ss; struct vmcb_seg ds; struct vmcb_seg fs; struct vmcb_seg gs; struct vmcb_seg gdtr; struct vmcb_seg ldtr; struct vmcb_seg idtr; struct vmcb_seg tr; u8 reserved_1[43]; u8 cpl; u8 reserved_2[4]; u64 efer; u8 reserved_3[112]; u64 cr4; u64 cr3; u64 cr0; u64 dr7; u64 dr6; u64 rflags; u64 rip; u8 reserved_4[88]; u64 rsp; u8 reserved_5[24]; u64 rax; u64 star; u64 lstar; u64 cstar; u64 sfmask; u64 kernel_gs_base; u64 sysenter_cs; u64 sysenter_esp; u64 sysenter_eip; u64 cr2; u8 reserved_6[32]; u64 g_pat; u64 dbgctl; u64 br_from; u64 br_to; u64 last_excp_from; u64 last_excp_to; /* * The following part of the save area is valid only for * SEV-ES guests when referenced through the GHCB. */ u8 reserved_7[104]; u64 reserved_8; /* rax already available at 0x01f8 */ u64 rcx; u64 rdx; u64 rbx; u64 reserved_9; /* rsp already available at 0x01d8 */ u64 rbp; u64 rsi; u64 rdi; u64 r8; u64 r9; u64 r10; u64 r11; u64 r12; u64 r13; u64 r14; u64 r15; u8 reserved_10[16]; u64 sw_exit_code; u64 sw_exit_info_1; u64 sw_exit_info_2; u64 sw_scratch; u8 reserved_11[56]; u64 xcr0; u8 valid_bitmap[16]; u64 x87_state_gpa; } __packed; struct ghcb { struct vmcb_save_area save; u8 reserved_save[2048 - sizeof(struct vmcb_save_area)]; u8 shared_buffer[2032]; u8 reserved_1[10]; u16 protocol_version; /* negotiated SEV-ES/GHCB protocol version */ u32 ghcb_usage; } __packed; #define EXPECTED_VMCB_SAVE_AREA_SIZE 1032 #define EXPECTED_VMCB_CONTROL_AREA_SIZE 256 #define EXPECTED_GHCB_SIZE PAGE_SIZE static inline void __unused_size_checks(void) { BUILD_BUG_ON(sizeof(struct vmcb_save_area) != EXPECTED_VMCB_SAVE_AREA_SIZE); BUILD_BUG_ON(sizeof(struct vmcb_control_area) != EXPECTED_VMCB_CONTROL_AREA_SIZE); BUILD_BUG_ON(sizeof(struct ghcb) != EXPECTED_GHCB_SIZE); } struct vmcb { struct vmcb_control_area control; u8 reserved_control[1024 - sizeof(struct vmcb_control_area)]; struct vmcb_save_area save; } __packed; #define SVM_CPUID_FUNC 0x8000000a #define SVM_VM_CR_SVM_DISABLE 4 #define SVM_SELECTOR_S_SHIFT 4 #define SVM_SELECTOR_DPL_SHIFT 5 #define SVM_SELECTOR_P_SHIFT 7 #define SVM_SELECTOR_AVL_SHIFT 8 #define SVM_SELECTOR_L_SHIFT 9 #define SVM_SELECTOR_DB_SHIFT 10 #define SVM_SELECTOR_G_SHIFT 11 #define SVM_SELECTOR_TYPE_MASK (0xf) #define SVM_SELECTOR_S_MASK (1 << SVM_SELECTOR_S_SHIFT) #define SVM_SELECTOR_DPL_MASK (3 << SVM_SELECTOR_DPL_SHIFT) #define SVM_SELECTOR_P_MASK (1 << SVM_SELECTOR_P_SHIFT) #define SVM_SELECTOR_AVL_MASK (1 << SVM_SELECTOR_AVL_SHIFT) #define SVM_SELECTOR_L_MASK (1 << SVM_SELECTOR_L_SHIFT) #define SVM_SELECTOR_DB_MASK (1 << SVM_SELECTOR_DB_SHIFT) #define SVM_SELECTOR_G_MASK (1 << SVM_SELECTOR_G_SHIFT) #define SVM_SELECTOR_WRITE_MASK (1 << 1) #define SVM_SELECTOR_READ_MASK SVM_SELECTOR_WRITE_MASK #define SVM_SELECTOR_CODE_MASK (1 << 3) #define SVM_EVTINJ_VEC_MASK 0xff #define SVM_EVTINJ_TYPE_SHIFT 8 #define SVM_EVTINJ_TYPE_MASK (7 << SVM_EVTINJ_TYPE_SHIFT) #define SVM_EVTINJ_TYPE_INTR (0 << SVM_EVTINJ_TYPE_SHIFT) #define SVM_EVTINJ_TYPE_NMI (2 << SVM_EVTINJ_TYPE_SHIFT) #define SVM_EVTINJ_TYPE_EXEPT (3 << SVM_EVTINJ_TYPE_SHIFT) #define SVM_EVTINJ_TYPE_SOFT (4 << SVM_EVTINJ_TYPE_SHIFT) #define SVM_EVTINJ_VALID (1 << 31) #define SVM_EVTINJ_VALID_ERR (1 << 11) #define SVM_EXITINTINFO_VEC_MASK SVM_EVTINJ_VEC_MASK #define SVM_EXITINTINFO_TYPE_MASK SVM_EVTINJ_TYPE_MASK #define SVM_EXITINTINFO_TYPE_INTR SVM_EVTINJ_TYPE_INTR #define SVM_EXITINTINFO_TYPE_NMI SVM_EVTINJ_TYPE_NMI #define SVM_EXITINTINFO_TYPE_EXEPT SVM_EVTINJ_TYPE_EXEPT #define SVM_EXITINTINFO_TYPE_SOFT SVM_EVTINJ_TYPE_SOFT #define SVM_EXITINTINFO_VALID SVM_EVTINJ_VALID #define SVM_EXITINTINFO_VALID_ERR SVM_EVTINJ_VALID_ERR #define SVM_EXITINFOSHIFT_TS_REASON_IRET 36 #define SVM_EXITINFOSHIFT_TS_REASON_JMP 38 #define SVM_EXITINFOSHIFT_TS_HAS_ERROR_CODE 44 #define SVM_EXITINFO_REG_MASK 0x0F #define SVM_CR0_SELECTIVE_MASK (X86_CR0_TS | X86_CR0_MP) /* GHCB Accessor functions */ #define GHCB_BITMAP_IDX(field) \ (offsetof(struct vmcb_save_area, field) / sizeof(u64)) #define DEFINE_GHCB_ACCESSORS(field) \ static inline bool ghcb_##field##_is_valid(const struct ghcb *ghcb) \ { \ return test_bit(GHCB_BITMAP_IDX(field), \ (unsigned long *)&ghcb->save.valid_bitmap); \ } \ \ static inline void ghcb_set_##field(struct ghcb *ghcb, u64 value) \ { \ __set_bit(GHCB_BITMAP_IDX(field), \ (unsigned long *)&ghcb->save.valid_bitmap); \ ghcb->save.field = value; \ } DEFINE_GHCB_ACCESSORS(cpl) DEFINE_GHCB_ACCESSORS(rip) DEFINE_GHCB_ACCESSORS(rsp) DEFINE_GHCB_ACCESSORS(rax) DEFINE_GHCB_ACCESSORS(rcx) DEFINE_GHCB_ACCESSORS(rdx) DEFINE_GHCB_ACCESSORS(rbx) DEFINE_GHCB_ACCESSORS(rbp) DEFINE_GHCB_ACCESSORS(rsi) DEFINE_GHCB_ACCESSORS(rdi) DEFINE_GHCB_ACCESSORS(r8) DEFINE_GHCB_ACCESSORS(r9) DEFINE_GHCB_ACCESSORS(r10) DEFINE_GHCB_ACCESSORS(r11) DEFINE_GHCB_ACCESSORS(r12) DEFINE_GHCB_ACCESSORS(r13) DEFINE_GHCB_ACCESSORS(r14) DEFINE_GHCB_ACCESSORS(r15) DEFINE_GHCB_ACCESSORS(sw_exit_code) DEFINE_GHCB_ACCESSORS(sw_exit_info_1) DEFINE_GHCB_ACCESSORS(sw_exit_info_2) DEFINE_GHCB_ACCESSORS(sw_scratch) DEFINE_GHCB_ACCESSORS(xcr0) #endif