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Diffstat (limited to 'drivers/lguest/lg.h')
-rw-r--r--drivers/lguest/lg.h258
1 files changed, 0 insertions, 258 deletions
diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h
deleted file mode 100644
index 2356a2318034..000000000000
--- a/drivers/lguest/lg.h
+++ /dev/null
@@ -1,258 +0,0 @@
-#ifndef _LGUEST_H
-#define _LGUEST_H
-
-#ifndef __ASSEMBLY__
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/stringify.h>
-#include <linux/lguest.h>
-#include <linux/lguest_launcher.h>
-#include <linux/wait.h>
-#include <linux/hrtimer.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-
-#include <asm/lguest.h>
-
-struct pgdir {
- unsigned long gpgdir;
- bool switcher_mapped;
- int last_host_cpu;
- pgd_t *pgdir;
-};
-
-/* We have two pages shared with guests, per cpu. */
-struct lguest_pages {
- /* This is the stack page mapped rw in guest */
- char spare[PAGE_SIZE - sizeof(struct lguest_regs)];
- struct lguest_regs regs;
-
- /* This is the host state & guest descriptor page, ro in guest */
- struct lguest_ro_state state;
-} __attribute__((aligned(PAGE_SIZE)));
-
-#define CHANGED_IDT 1
-#define CHANGED_GDT 2
-#define CHANGED_GDT_TLS 4 /* Actually a subset of CHANGED_GDT */
-#define CHANGED_ALL 3
-
-struct lg_cpu {
- unsigned int id;
- struct lguest *lg;
- struct task_struct *tsk;
- struct mm_struct *mm; /* == tsk->mm, but that becomes NULL on exit */
-
- u32 cr2;
- u32 esp1;
- u16 ss1;
-
- /* Bitmap of what has changed: see CHANGED_* above. */
- int changed;
-
- /* Pending operation. */
- struct lguest_pending pending;
-
- unsigned long *reg_read; /* register from LHREQ_GETREG */
-
- /* At end of a page shared mapped over lguest_pages in guest. */
- unsigned long regs_page;
- struct lguest_regs *regs;
-
- struct lguest_pages *last_pages;
-
- /* Initialization mode: linear map everything. */
- bool linear_pages;
- int cpu_pgd; /* Which pgd this cpu is currently using */
-
- /* If a hypercall was asked for, this points to the arguments. */
- struct hcall_args *hcall;
- u32 next_hcall;
-
- /* Virtual clock device */
- struct hrtimer hrt;
-
- /* Did the Guest tell us to halt? */
- int halted;
-
- /* Pending virtual interrupts */
- DECLARE_BITMAP(irqs_pending, LGUEST_IRQS);
-
- struct lg_cpu_arch arch;
-};
-
-/* The private info the thread maintains about the guest. */
-struct lguest {
- struct lguest_data __user *lguest_data;
- struct lg_cpu cpus[NR_CPUS];
- unsigned int nr_cpus;
-
- /* Valid guest memory pages must be < this. */
- u32 pfn_limit;
-
- /* Device memory is >= pfn_limit and < device_limit. */
- u32 device_limit;
-
- /*
- * This provides the offset to the base of guest-physical memory in the
- * Launcher.
- */
- void __user *mem_base;
- unsigned long kernel_address;
-
- struct pgdir pgdirs[4];
-
- unsigned long noirq_iret;
-
- unsigned int stack_pages;
- u32 tsc_khz;
-
- /* Dead? */
- const char *dead;
-};
-
-extern struct mutex lguest_lock;
-
-/* core.c: */
-bool lguest_address_ok(const struct lguest *lg,
- unsigned long addr, unsigned long len);
-void __lgread(struct lg_cpu *, void *, unsigned long, unsigned);
-void __lgwrite(struct lg_cpu *, unsigned long, const void *, unsigned);
-extern struct page **lg_switcher_pages;
-
-/*H:035
- * Using memory-copy operations like that is usually inconvient, so we
- * have the following helper macros which read and write a specific type (often
- * an unsigned long).
- *
- * This reads into a variable of the given type then returns that.
- */
-#define lgread(cpu, addr, type) \
- ({ type _v; __lgread((cpu), &_v, (addr), sizeof(_v)); _v; })
-
-/* This checks that the variable is of the given type, then writes it out. */
-#define lgwrite(cpu, addr, type, val) \
- do { \
- typecheck(type, val); \
- __lgwrite((cpu), (addr), &(val), sizeof(val)); \
- } while(0)
-/* (end of memory access helper routines) :*/
-
-int run_guest(struct lg_cpu *cpu, unsigned long __user *user);
-
-/*
- * Helper macros to obtain the first 12 or the last 20 bits, this is only the
- * first step in the migration to the kernel types. pte_pfn is already defined
- * in the kernel.
- */
-#define pgd_flags(x) (pgd_val(x) & ~PAGE_MASK)
-#define pgd_pfn(x) (pgd_val(x) >> PAGE_SHIFT)
-#define pmd_flags(x) (pmd_val(x) & ~PAGE_MASK)
-#define pmd_pfn(x) (pmd_val(x) >> PAGE_SHIFT)
-
-/* interrupts_and_traps.c: */
-unsigned int interrupt_pending(struct lg_cpu *cpu, bool *more);
-void try_deliver_interrupt(struct lg_cpu *cpu, unsigned int irq, bool more);
-void set_interrupt(struct lg_cpu *cpu, unsigned int irq);
-bool deliver_trap(struct lg_cpu *cpu, unsigned int num);
-void load_guest_idt_entry(struct lg_cpu *cpu, unsigned int i,
- u32 low, u32 hi);
-void guest_set_stack(struct lg_cpu *cpu, u32 seg, u32 esp, unsigned int pages);
-void pin_stack_pages(struct lg_cpu *cpu);
-void setup_default_idt_entries(struct lguest_ro_state *state,
- const unsigned long *def);
-void copy_traps(const struct lg_cpu *cpu, struct desc_struct *idt,
- const unsigned long *def);
-void guest_set_clockevent(struct lg_cpu *cpu, unsigned long delta);
-bool send_notify_to_eventfd(struct lg_cpu *cpu);
-void init_clockdev(struct lg_cpu *cpu);
-bool check_syscall_vector(struct lguest *lg);
-bool could_be_syscall(unsigned int num);
-int init_interrupts(void);
-void free_interrupts(void);
-
-/* segments.c: */
-void setup_default_gdt_entries(struct lguest_ro_state *state);
-void setup_guest_gdt(struct lg_cpu *cpu);
-void load_guest_gdt_entry(struct lg_cpu *cpu, unsigned int i,
- u32 low, u32 hi);
-void guest_load_tls(struct lg_cpu *cpu, unsigned long tls_array);
-void copy_gdt(const struct lg_cpu *cpu, struct desc_struct *gdt);
-void copy_gdt_tls(const struct lg_cpu *cpu, struct desc_struct *gdt);
-
-/* page_tables.c: */
-int init_guest_pagetable(struct lguest *lg);
-void free_guest_pagetable(struct lguest *lg);
-void guest_new_pagetable(struct lg_cpu *cpu, unsigned long pgtable);
-void guest_set_pgd(struct lguest *lg, unsigned long gpgdir, u32 i);
-#ifdef CONFIG_X86_PAE
-void guest_set_pmd(struct lguest *lg, unsigned long gpgdir, u32 i);
-#endif
-void guest_pagetable_clear_all(struct lg_cpu *cpu);
-void guest_pagetable_flush_user(struct lg_cpu *cpu);
-void guest_set_pte(struct lg_cpu *cpu, unsigned long gpgdir,
- unsigned long vaddr, pte_t val);
-void map_switcher_in_guest(struct lg_cpu *cpu, struct lguest_pages *pages);
-bool demand_page(struct lg_cpu *cpu, unsigned long cr2, int errcode,
- unsigned long *iomem);
-void pin_page(struct lg_cpu *cpu, unsigned long vaddr);
-bool __guest_pa(struct lg_cpu *cpu, unsigned long vaddr, unsigned long *paddr);
-unsigned long guest_pa(struct lg_cpu *cpu, unsigned long vaddr);
-void page_table_guest_data_init(struct lg_cpu *cpu);
-
-/* <arch>/core.c: */
-void lguest_arch_host_init(void);
-void lguest_arch_host_fini(void);
-void lguest_arch_run_guest(struct lg_cpu *cpu);
-void lguest_arch_handle_trap(struct lg_cpu *cpu);
-int lguest_arch_init_hypercalls(struct lg_cpu *cpu);
-int lguest_arch_do_hcall(struct lg_cpu *cpu, struct hcall_args *args);
-void lguest_arch_setup_regs(struct lg_cpu *cpu, unsigned long start);
-unsigned long *lguest_arch_regptr(struct lg_cpu *cpu, size_t reg_off, bool any);
-
-/* <arch>/switcher.S: */
-extern char start_switcher_text[], end_switcher_text[], switch_to_guest[];
-
-/* lguest_user.c: */
-int lguest_device_init(void);
-void lguest_device_remove(void);
-
-/* hypercalls.c: */
-void do_hypercalls(struct lg_cpu *cpu);
-void write_timestamp(struct lg_cpu *cpu);
-
-/*L:035
- * Let's step aside for the moment, to study one important routine that's used
- * widely in the Host code.
- *
- * There are many cases where the Guest can do something invalid, like pass crap
- * to a hypercall. Since only the Guest kernel can make hypercalls, it's quite
- * acceptable to simply terminate the Guest and give the Launcher a nicely
- * formatted reason. It's also simpler for the Guest itself, which doesn't
- * need to check most hypercalls for "success"; if you're still running, it
- * succeeded.
- *
- * Once this is called, the Guest will never run again, so most Host code can
- * call this then continue as if nothing had happened. This means many
- * functions don't have to explicitly return an error code, which keeps the
- * code simple.
- *
- * It also means that this can be called more than once: only the first one is
- * remembered. The only trick is that we still need to kill the Guest even if
- * we can't allocate memory to store the reason. Linux has a neat way of
- * packing error codes into invalid pointers, so we use that here.
- *
- * Like any macro which uses an "if", it is safely wrapped in a run-once "do {
- * } while(0)".
- */
-#define kill_guest(cpu, fmt...) \
-do { \
- if (!(cpu)->lg->dead) { \
- (cpu)->lg->dead = kasprintf(GFP_ATOMIC, fmt); \
- if (!(cpu)->lg->dead) \
- (cpu)->lg->dead = ERR_PTR(-ENOMEM); \
- } \
-} while(0)
-/* (End of aside) :*/
-
-#endif /* __ASSEMBLY__ */
-#endif /* _LGUEST_H */