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xen64: define asm/xen/interface for 64-bit

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Copy 64-bit definitions of various interface structures into place.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge 2008-07-08 15:06:34 -07:00 committed by Ingo Molnar
parent 851fa3c4e7
commit 48b5db2062
5 changed files with 308 additions and 105 deletions
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12
arch/x86/xen/mmu.h
View file

@ -10,18 +10,6 @@ enum pt_level {
PT_PTE PT_PTE
}; };
/*
* Page-directory addresses above 4GB do not fit into architectural %cr3.
* When accessing %cr3, or equivalent field in vcpu_guest_context, guests
* must use the following accessor macros to pack/unpack valid MFNs.
*
* Note that Xen is using the fact that the pagetable base is always
* page-aligned, and putting the 12 MSB of the address into the 12 LSB
* of cr3.
*/
#define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20))
#define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20))
void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);

139
include/asm-x86/xen/interface.h
View file

@ -1,13 +1,13 @@
/****************************************************************************** /******************************************************************************
* arch-x86_32.h * arch-x86_32.h
* *
* Guest OS interface to x86 32-bit Xen. * Guest OS interface to x86 Xen.
* *
* Copyright (c) 2004, K A Fraser * Copyright (c) 2004, K A Fraser
*/ */
#ifndef __XEN_PUBLIC_ARCH_X86_32_H__ #ifndef __ASM_X86_XEN_INTERFACE_H
#define __XEN_PUBLIC_ARCH_X86_32_H__ #define __ASM_X86_XEN_INTERFACE_H
#ifdef __XEN__ #ifdef __XEN__
#define __DEFINE_GUEST_HANDLE(name, type) \ #define __DEFINE_GUEST_HANDLE(name, type) \
@ -57,6 +57,17 @@ DEFINE_GUEST_HANDLE(long);
DEFINE_GUEST_HANDLE(void); DEFINE_GUEST_HANDLE(void);
#endif #endif
#ifndef HYPERVISOR_VIRT_START
#define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START)
#endif
#ifndef machine_to_phys_mapping
#define machine_to_phys_mapping ((unsigned long *)HYPERVISOR_VIRT_START)
#endif
/* Maximum number of virtual CPUs in multi-processor guests. */
#define MAX_VIRT_CPUS 32
/* /*
* SEGMENT DESCRIPTOR TABLES * SEGMENT DESCRIPTOR TABLES
*/ */
@ -70,59 +81,22 @@ DEFINE_GUEST_HANDLE(void);
#define FIRST_RESERVED_GDT_BYTE (FIRST_RESERVED_GDT_PAGE * 4096) #define FIRST_RESERVED_GDT_BYTE (FIRST_RESERVED_GDT_PAGE * 4096)
#define FIRST_RESERVED_GDT_ENTRY (FIRST_RESERVED_GDT_BYTE / 8) #define FIRST_RESERVED_GDT_ENTRY (FIRST_RESERVED_GDT_BYTE / 8)
/*
* These flat segments are in the Xen-private section of every GDT. Since these
* are also present in the initial GDT, many OSes will be able to avoid
* installing their own GDT.
*/
#define FLAT_RING1_CS 0xe019 /* GDT index 259 */
#define FLAT_RING1_DS 0xe021 /* GDT index 260 */
#define FLAT_RING1_SS 0xe021 /* GDT index 260 */
#define FLAT_RING3_CS 0xe02b /* GDT index 261 */
#define FLAT_RING3_DS 0xe033 /* GDT index 262 */
#define FLAT_RING3_SS 0xe033 /* GDT index 262 */
#define FLAT_KERNEL_CS FLAT_RING1_CS
#define FLAT_KERNEL_DS FLAT_RING1_DS
#define FLAT_KERNEL_SS FLAT_RING1_SS
#define FLAT_USER_CS FLAT_RING3_CS
#define FLAT_USER_DS FLAT_RING3_DS
#define FLAT_USER_SS FLAT_RING3_SS
/* And the trap vector is... */
#define TRAP_INSTR "int $0x82"
/*
* Virtual addresses beyond this are not modifiable by guest OSes. The
* machine->physical mapping table starts at this address, read-only.
*/
#ifdef CONFIG_X86_PAE
#define __HYPERVISOR_VIRT_START 0xF5800000
#else
#define __HYPERVISOR_VIRT_START 0xFC000000
#endif
#ifndef HYPERVISOR_VIRT_START
#define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START)
#endif
#ifndef machine_to_phys_mapping
#define machine_to_phys_mapping ((unsigned long *)HYPERVISOR_VIRT_START)
#endif
/* Maximum number of virtual CPUs in multi-processor guests. */
#define MAX_VIRT_CPUS 32
#ifndef __ASSEMBLY__
/* /*
* Send an array of these to HYPERVISOR_set_trap_table() * Send an array of these to HYPERVISOR_set_trap_table()
* The privilege level specifies which modes may enter a trap via a software
* interrupt. On x86/64, since rings 1 and 2 are unavailable, we allocate
* privilege levels as follows:
* Level == 0: Noone may enter
* Level == 1: Kernel may enter
* Level == 2: Kernel may enter
* Level == 3: Everyone may enter
*/ */
#define TI_GET_DPL(_ti) ((_ti)->flags & 3) #define TI_GET_DPL(_ti) ((_ti)->flags & 3)
#define TI_GET_IF(_ti) ((_ti)->flags & 4) #define TI_GET_IF(_ti) ((_ti)->flags & 4)
#define TI_SET_DPL(_ti, _dpl) ((_ti)->flags |= (_dpl)) #define TI_SET_DPL(_ti, _dpl) ((_ti)->flags |= (_dpl))
#define TI_SET_IF(_ti, _if) ((_ti)->flags |= ((!!(_if))<<2)) #define TI_SET_IF(_ti, _if) ((_ti)->flags |= ((!!(_if))<<2))
#ifndef __ASSEMBLY__
struct trap_info { struct trap_info {
uint8_t vector; /* exception vector */ uint8_t vector; /* exception vector */
uint8_t flags; /* 0-3: privilege level; 4: clear event enable? */ uint8_t flags; /* 0-3: privilege level; 4: clear event enable? */
@ -131,32 +105,21 @@ struct trap_info {
}; };
DEFINE_GUEST_HANDLE_STRUCT(trap_info); DEFINE_GUEST_HANDLE_STRUCT(trap_info);
struct cpu_user_regs { struct arch_shared_info {
uint32_t ebx; unsigned long max_pfn; /* max pfn that appears in table */
uint32_t ecx; /* Frame containing list of mfns containing list of mfns containing p2m. */
uint32_t edx; unsigned long pfn_to_mfn_frame_list_list;
uint32_t esi; unsigned long nmi_reason;
uint32_t edi;
uint32_t ebp;
uint32_t eax;
uint16_t error_code; /* private */
uint16_t entry_vector; /* private */
uint32_t eip;
uint16_t cs;
uint8_t saved_upcall_mask;
uint8_t _pad0;
uint32_t eflags; /* eflags.IF == !saved_upcall_mask */
uint32_t esp;
uint16_t ss, _pad1;
uint16_t es, _pad2;
uint16_t ds, _pad3;
uint16_t fs, _pad4;
uint16_t gs, _pad5;
}; };
DEFINE_GUEST_HANDLE_STRUCT(cpu_user_regs); #endif /* !__ASSEMBLY__ */
typedef uint64_t tsc_timestamp_t; /* RDTSC timestamp */ #ifdef CONFIG_X86_32
#include "interface_32.h"
#else
#include "interface_64.h"
#endif
#ifndef __ASSEMBLY__
/* /*
* The following is all CPU context. Note that the fpu_ctxt block is filled * The following is all CPU context. Note that the fpu_ctxt block is filled
* in by FXSAVE if the CPU has feature FXSR; otherwise FSAVE is used. * in by FXSAVE if the CPU has feature FXSR; otherwise FSAVE is used.
@ -173,33 +136,29 @@ struct vcpu_guest_context {
unsigned long ldt_base, ldt_ents; /* LDT (linear address, # ents) */ unsigned long ldt_base, ldt_ents; /* LDT (linear address, # ents) */
unsigned long gdt_frames[16], gdt_ents; /* GDT (machine frames, # ents) */ unsigned long gdt_frames[16], gdt_ents; /* GDT (machine frames, # ents) */
unsigned long kernel_ss, kernel_sp; /* Virtual TSS (only SS1/SP1) */ unsigned long kernel_ss, kernel_sp; /* Virtual TSS (only SS1/SP1) */
/* NB. User pagetable on x86/64 is placed in ctrlreg[1]. */
unsigned long ctrlreg[8]; /* CR0-CR7 (control registers) */ unsigned long ctrlreg[8]; /* CR0-CR7 (control registers) */
unsigned long debugreg[8]; /* DB0-DB7 (debug registers) */ unsigned long debugreg[8]; /* DB0-DB7 (debug registers) */
#ifdef __i386__
unsigned long event_callback_cs; /* CS:EIP of event callback */ unsigned long event_callback_cs; /* CS:EIP of event callback */
unsigned long event_callback_eip; unsigned long event_callback_eip;
unsigned long failsafe_callback_cs; /* CS:EIP of failsafe callback */ unsigned long failsafe_callback_cs; /* CS:EIP of failsafe callback */
unsigned long failsafe_callback_eip; unsigned long failsafe_callback_eip;
#else
unsigned long event_callback_eip;
unsigned long failsafe_callback_eip;
unsigned long syscall_callback_eip;
#endif
unsigned long vm_assist; /* VMASST_TYPE_* bitmap */ unsigned long vm_assist; /* VMASST_TYPE_* bitmap */
#ifdef __x86_64__
/* Segment base addresses. */
uint64_t fs_base;
uint64_t gs_base_kernel;
uint64_t gs_base_user;
#endif
}; };
DEFINE_GUEST_HANDLE_STRUCT(vcpu_guest_context); DEFINE_GUEST_HANDLE_STRUCT(vcpu_guest_context);
#endif /* !__ASSEMBLY__ */
struct arch_shared_info {
unsigned long max_pfn; /* max pfn that appears in table */
/* Frame containing list of mfns containing list of mfns containing p2m. */
unsigned long pfn_to_mfn_frame_list_list;
unsigned long nmi_reason;
};
struct arch_vcpu_info {
unsigned long cr2;
unsigned long pad[5]; /* sizeof(struct vcpu_info) == 64 */
};
struct xen_callback {
unsigned long cs;
unsigned long eip;
};
#endif /* !__ASSEMBLY__ */
/* /*
* Prefix forces emulation of some non-trapping instructions. * Prefix forces emulation of some non-trapping instructions.
@ -213,4 +172,4 @@ struct xen_callback {
#define XEN_CPUID XEN_EMULATE_PREFIX "cpuid" #define XEN_CPUID XEN_EMULATE_PREFIX "cpuid"
#endif #endif
#endif #endif /* __ASM_X86_XEN_INTERFACE_H */

97
include/asm-x86/xen/interface_32.h Normal file
View file

@ -0,0 +1,97 @@
/******************************************************************************
* arch-x86_32.h
*
* Guest OS interface to x86 32-bit Xen.
*
* Copyright (c) 2004, K A Fraser
*/
#ifndef __ASM_X86_XEN_INTERFACE_32_H
#define __ASM_X86_XEN_INTERFACE_32_H
/*
* These flat segments are in the Xen-private section of every GDT. Since these
* are also present in the initial GDT, many OSes will be able to avoid
* installing their own GDT.
*/
#define FLAT_RING1_CS 0xe019 /* GDT index 259 */
#define FLAT_RING1_DS 0xe021 /* GDT index 260 */
#define FLAT_RING1_SS 0xe021 /* GDT index 260 */
#define FLAT_RING3_CS 0xe02b /* GDT index 261 */
#define FLAT_RING3_DS 0xe033 /* GDT index 262 */
#define FLAT_RING3_SS 0xe033 /* GDT index 262 */
#define FLAT_KERNEL_CS FLAT_RING1_CS
#define FLAT_KERNEL_DS FLAT_RING1_DS
#define FLAT_KERNEL_SS FLAT_RING1_SS
#define FLAT_USER_CS FLAT_RING3_CS
#define FLAT_USER_DS FLAT_RING3_DS
#define FLAT_USER_SS FLAT_RING3_SS
/* And the trap vector is... */
#define TRAP_INSTR "int $0x82"
/*
* Virtual addresses beyond this are not modifiable by guest OSes. The
* machine->physical mapping table starts at this address, read-only.
*/
#define __HYPERVISOR_VIRT_START 0xF5800000
#ifndef __ASSEMBLY__
struct cpu_user_regs {
uint32_t ebx;
uint32_t ecx;
uint32_t edx;
uint32_t esi;
uint32_t edi;
uint32_t ebp;
uint32_t eax;
uint16_t error_code; /* private */
uint16_t entry_vector; /* private */
uint32_t eip;
uint16_t cs;
uint8_t saved_upcall_mask;
uint8_t _pad0;
uint32_t eflags; /* eflags.IF == !saved_upcall_mask */
uint32_t esp;
uint16_t ss, _pad1;
uint16_t es, _pad2;
uint16_t ds, _pad3;
uint16_t fs, _pad4;
uint16_t gs, _pad5;
};
DEFINE_GUEST_HANDLE_STRUCT(cpu_user_regs);
typedef uint64_t tsc_timestamp_t; /* RDTSC timestamp */
struct arch_vcpu_info {
unsigned long cr2;
unsigned long pad[5]; /* sizeof(struct vcpu_info) == 64 */
};
struct xen_callback {
unsigned long cs;
unsigned long eip;
};
typedef struct xen_callback xen_callback_t;
#define XEN_CALLBACK(__cs, __eip) \
((struct xen_callback){ .cs = (__cs), .eip = (unsigned long)(__eip) })
#endif /* !__ASSEMBLY__ */
/*
* Page-directory addresses above 4GB do not fit into architectural %cr3.
* When accessing %cr3, or equivalent field in vcpu_guest_context, guests
* must use the following accessor macros to pack/unpack valid MFNs.
*
* Note that Xen is using the fact that the pagetable base is always
* page-aligned, and putting the 12 MSB of the address into the 12 LSB
* of cr3.
*/
#define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20))
#define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20))
#endif /* __ASM_X86_XEN_INTERFACE_32_H */

159
include/asm-x86/xen/interface_64.h Normal file
View file

@ -0,0 +1,159 @@
#ifndef __ASM_X86_XEN_INTERFACE_64_H
#define __ASM_X86_XEN_INTERFACE_64_H
/*
* 64-bit segment selectors
* These flat segments are in the Xen-private section of every GDT. Since these
* are also present in the initial GDT, many OSes will be able to avoid
* installing their own GDT.
*/
#define FLAT_RING3_CS32 0xe023 /* GDT index 260 */
#define FLAT_RING3_CS64 0xe033 /* GDT index 261 */
#define FLAT_RING3_DS32 0xe02b /* GDT index 262 */
#define FLAT_RING3_DS64 0x0000 /* NULL selector */
#define FLAT_RING3_SS32 0xe02b /* GDT index 262 */
#define FLAT_RING3_SS64 0xe02b /* GDT index 262 */
#define FLAT_KERNEL_DS64 FLAT_RING3_DS64
#define FLAT_KERNEL_DS32 FLAT_RING3_DS32
#define FLAT_KERNEL_DS FLAT_KERNEL_DS64
#define FLAT_KERNEL_CS64 FLAT_RING3_CS64
#define FLAT_KERNEL_CS32 FLAT_RING3_CS32
#define FLAT_KERNEL_CS FLAT_KERNEL_CS64
#define FLAT_KERNEL_SS64 FLAT_RING3_SS64
#define FLAT_KERNEL_SS32 FLAT_RING3_SS32
#define FLAT_KERNEL_SS FLAT_KERNEL_SS64
#define FLAT_USER_DS64 FLAT_RING3_DS64
#define FLAT_USER_DS32 FLAT_RING3_DS32
#define FLAT_USER_DS FLAT_USER_DS64
#define FLAT_USER_CS64 FLAT_RING3_CS64
#define FLAT_USER_CS32 FLAT_RING3_CS32
#define FLAT_USER_CS FLAT_USER_CS64
#define FLAT_USER_SS64 FLAT_RING3_SS64
#define FLAT_USER_SS32 FLAT_RING3_SS32
#define FLAT_USER_SS FLAT_USER_SS64
#define __HYPERVISOR_VIRT_START 0xFFFF800000000000
#define __HYPERVISOR_VIRT_END 0xFFFF880000000000
#define __MACH2PHYS_VIRT_START 0xFFFF800000000000
#define __MACH2PHYS_VIRT_END 0xFFFF804000000000
#ifndef HYPERVISOR_VIRT_START
#define HYPERVISOR_VIRT_START mk_unsigned_long(__HYPERVISOR_VIRT_START)
#define HYPERVISOR_VIRT_END mk_unsigned_long(__HYPERVISOR_VIRT_END)
#endif
#define MACH2PHYS_VIRT_START mk_unsigned_long(__MACH2PHYS_VIRT_START)
#define MACH2PHYS_VIRT_END mk_unsigned_long(__MACH2PHYS_VIRT_END)
#define MACH2PHYS_NR_ENTRIES ((MACH2PHYS_VIRT_END-MACH2PHYS_VIRT_START)>>3)
#ifndef machine_to_phys_mapping
#define machine_to_phys_mapping ((unsigned long *)HYPERVISOR_VIRT_START)
#endif
/*
* int HYPERVISOR_set_segment_base(unsigned int which, unsigned long base)
* @which == SEGBASE_* ; @base == 64-bit base address
* Returns 0 on success.
*/
#define SEGBASE_FS 0
#define SEGBASE_GS_USER 1
#define SEGBASE_GS_KERNEL 2
#define SEGBASE_GS_USER_SEL 3 /* Set user %gs specified in base[15:0] */
/*
* int HYPERVISOR_iret(void)
* All arguments are on the kernel stack, in the following format.
* Never returns if successful. Current kernel context is lost.
* The saved CS is mapped as follows:
* RING0 -> RING3 kernel mode.
* RING1 -> RING3 kernel mode.
* RING2 -> RING3 kernel mode.
* RING3 -> RING3 user mode.
* However RING0 indicates that the guest kernel should return to iteself
* directly with
* orb $3,1*8(%rsp)
* iretq
* If flags contains VGCF_in_syscall:
* Restore RAX, RIP, RFLAGS, RSP.
* Discard R11, RCX, CS, SS.
* Otherwise:
* Restore RAX, R11, RCX, CS:RIP, RFLAGS, SS:RSP.
* All other registers are saved on hypercall entry and restored to user.
*/
/* Guest exited in SYSCALL context? Return to guest with SYSRET? */
#define _VGCF_in_syscall 8
#define VGCF_in_syscall (1<<_VGCF_in_syscall)
#define VGCF_IN_SYSCALL VGCF_in_syscall
#ifndef __ASSEMBLY__
struct iret_context {
/* Top of stack (%rsp at point of hypercall). */
uint64_t rax, r11, rcx, flags, rip, cs, rflags, rsp, ss;
/* Bottom of iret stack frame. */
};
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
/* Anonymous union includes both 32- and 64-bit names (e.g., eax/rax). */
#define __DECL_REG(name) union { \
uint64_t r ## name, e ## name; \
uint32_t _e ## name; \
}
#else
/* Non-gcc sources must always use the proper 64-bit name (e.g., rax). */
#define __DECL_REG(name) uint64_t r ## name
#endif
struct cpu_user_regs {
uint64_t r15;
uint64_t r14;
uint64_t r13;
uint64_t r12;
__DECL_REG(bp);
__DECL_REG(bx);
uint64_t r11;
uint64_t r10;
uint64_t r9;
uint64_t r8;
__DECL_REG(ax);
__DECL_REG(cx);
__DECL_REG(dx);
__DECL_REG(si);
__DECL_REG(di);
uint32_t error_code; /* private */
uint32_t entry_vector; /* private */
__DECL_REG(ip);
uint16_t cs, _pad0[1];
uint8_t saved_upcall_mask;
uint8_t _pad1[3];
__DECL_REG(flags); /* rflags.IF == !saved_upcall_mask */
__DECL_REG(sp);
uint16_t ss, _pad2[3];
uint16_t es, _pad3[3];
uint16_t ds, _pad4[3];
uint16_t fs, _pad5[3]; /* Non-zero => takes precedence over fs_base. */
uint16_t gs, _pad6[3]; /* Non-zero => takes precedence over gs_base_usr. */
};
DEFINE_GUEST_HANDLE_STRUCT(cpu_user_regs);
#undef __DECL_REG
#define xen_pfn_to_cr3(pfn) ((unsigned long)(pfn) << 12)
#define xen_cr3_to_pfn(cr3) ((unsigned long)(cr3) >> 12)
struct arch_vcpu_info {
unsigned long cr2;
unsigned long pad; /* sizeof(vcpu_info_t) == 64 */
};
typedef unsigned long xen_callback_t;
#define XEN_CALLBACK(__cs, __rip) \
((unsigned long)(__rip))
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_X86_XEN_INTERFACE_64_H */

6
include/xen/interface/callback.h
View file

@ -82,9 +82,9 @@
*/ */
#define CALLBACKOP_register 0 #define CALLBACKOP_register 0
struct callback_register { struct callback_register {
uint16_t type; uint16_t type;
uint16_t flags; uint16_t flags;
struct xen_callback address; xen_callback_t address;
}; };
/* /*