mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
2f921b5bb0
The last patch reduced our interrupt-suppression region to one address, so simplify the code somewhat. Also, remove the obsolete undefined instruction ranges and the comment which refers to lguest_guest.S instead of head_32.S. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
#ifndef _ASM_X86_LGUEST_H
|
|
#define _ASM_X86_LGUEST_H
|
|
|
|
#define GDT_ENTRY_LGUEST_CS 10
|
|
#define GDT_ENTRY_LGUEST_DS 11
|
|
#define LGUEST_CS (GDT_ENTRY_LGUEST_CS * 8)
|
|
#define LGUEST_DS (GDT_ENTRY_LGUEST_DS * 8)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <asm/desc.h>
|
|
|
|
#define GUEST_PL 1
|
|
|
|
/* Page for Switcher text itself, then two pages per cpu */
|
|
#define TOTAL_SWITCHER_PAGES (1 + 2 * nr_cpu_ids)
|
|
|
|
/* Where we map the Switcher, in both Host and Guest. */
|
|
extern unsigned long switcher_addr;
|
|
|
|
/* Found in switcher.S */
|
|
extern unsigned long default_idt_entries[];
|
|
|
|
/* Declarations for definitions in arch/x86/lguest/head_32.S */
|
|
extern char lguest_noirq_iret[];
|
|
extern const char lgstart_cli[], lgend_cli[];
|
|
extern const char lgstart_pushf[], lgend_pushf[];
|
|
|
|
extern void lguest_iret(void);
|
|
extern void lguest_init(void);
|
|
|
|
struct lguest_regs {
|
|
/* Manually saved part. */
|
|
unsigned long eax, ebx, ecx, edx;
|
|
unsigned long esi, edi, ebp;
|
|
unsigned long gs;
|
|
unsigned long fs, ds, es;
|
|
unsigned long trapnum, errcode;
|
|
/* Trap pushed part */
|
|
unsigned long eip;
|
|
unsigned long cs;
|
|
unsigned long eflags;
|
|
unsigned long esp;
|
|
unsigned long ss;
|
|
};
|
|
|
|
/* This is a guest-specific page (mapped ro) into the guest. */
|
|
struct lguest_ro_state {
|
|
/* Host information we need to restore when we switch back. */
|
|
u32 host_cr3;
|
|
struct desc_ptr host_idt_desc;
|
|
struct desc_ptr host_gdt_desc;
|
|
u32 host_sp;
|
|
|
|
/* Fields which are used when guest is running. */
|
|
struct desc_ptr guest_idt_desc;
|
|
struct desc_ptr guest_gdt_desc;
|
|
struct x86_hw_tss guest_tss;
|
|
struct desc_struct guest_idt[IDT_ENTRIES];
|
|
struct desc_struct guest_gdt[GDT_ENTRIES];
|
|
};
|
|
|
|
struct lg_cpu_arch {
|
|
/* The GDT entries copied into lguest_ro_state when running. */
|
|
struct desc_struct gdt[GDT_ENTRIES];
|
|
|
|
/* The IDT entries: some copied into lguest_ro_state when running. */
|
|
struct desc_struct idt[IDT_ENTRIES];
|
|
|
|
/* The address of the last guest-visible pagefault (ie. cr2). */
|
|
unsigned long last_pagefault;
|
|
};
|
|
|
|
static inline void lguest_set_ts(void)
|
|
{
|
|
u32 cr0;
|
|
|
|
cr0 = read_cr0();
|
|
if (!(cr0 & 8))
|
|
write_cr0(cr0 | 8);
|
|
}
|
|
|
|
/* Full 4G segment descriptors, suitable for CS and DS. */
|
|
#define FULL_EXEC_SEGMENT \
|
|
((struct desc_struct)GDT_ENTRY_INIT(0xc09b, 0, 0xfffff))
|
|
#define FULL_SEGMENT ((struct desc_struct)GDT_ENTRY_INIT(0xc093, 0, 0xfffff))
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_X86_LGUEST_H */
|