#include <linux/lguest.h>
#include <linux/lguest_launcher.h>
#include <linux/wait.h>
+#include <linux/hrtimer.h>
#include <linux/err.h>
-#include <asm/semaphore.h>
+#include <linux/slab.h>
#include <asm/lguest.h>
void free_pagetables(void);
int init_pagetables(struct page **switcher_page, unsigned int pages);
-struct pgdir
-{
+struct pgdir {
unsigned long gpgdir;
pgd_t *pgdir;
};
/* We have two pages shared with guests, per cpu. */
-struct lguest_pages
-{
+struct lguest_pages {
/* This is the stack page mapped rw in guest */
char spare[PAGE_SIZE - sizeof(struct lguest_regs)];
struct lguest_regs regs;
#define CHANGED_GDT_TLS 4 /* Actually a subset of CHANGED_GDT */
#define CHANGED_ALL 3
-struct lguest;
-
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 */
- /* At end of a page shared mapped over lguest_pages in guest. */
+ u32 cr2;
+ int ts;
+ u32 esp1;
+ u16 ss1;
+
+ /* Bitmap of what has changed: see CHANGED_* above. */
+ int changed;
+
+ unsigned long pending_notify; /* pfn from LHCALL_NOTIFY */
+
+ /* 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;
+
+ 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;
- /* Do we need to stop what we're doing and return to userspace? */
- int break_out;
- wait_queue_head_t break_wq;
+ /* Did the Guest tell us to halt? */
int halted;
/* Pending virtual interrupts */
struct lg_cpu_arch arch;
};
+struct lg_eventfd {
+ unsigned long addr;
+ struct eventfd_ctx *event;
+};
+
+struct lg_eventfd_map {
+ unsigned int num;
+ struct lg_eventfd map[];
+};
+
/* The private info the thread maintains about the guest. */
-struct lguest
-{
+struct lguest {
struct lguest_data __user *lguest_data;
struct lg_cpu cpus[NR_CPUS];
unsigned int nr_cpus;
u32 pfn_limit;
- /* This provides the offset to the base of guest-physical
- * memory in the Launcher. */
+
+ /*
+ * This provides the offset to the base of guest-physical memory in the
+ * Launcher.
+ */
void __user *mem_base;
unsigned long kernel_address;
- u32 cr2;
- int ts;
- u32 esp1;
- u8 ss1;
- /* Bitmap of what has changed: see CHANGED_* above. */
- int changed;
- struct lguest_pages *last_pages;
-
- /* We keep a small number of these. */
- u32 pgdidx;
struct pgdir pgdirs[4];
unsigned long noirq_start, noirq_end;
- unsigned long pending_notify; /* pfn from LHCALL_NOTIFY */
unsigned int stack_pages;
u32 tsc_khz;
+ struct lg_eventfd_map *eventfds;
+
/* Dead? */
const char *dead;
};
extern struct mutex lguest_lock;
/* core.c: */
-int lguest_address_ok(const struct lguest *lg,
- unsigned long addr, unsigned long len);
-void __lgread(struct lguest *, void *, unsigned long, unsigned);
-void __lgwrite(struct lguest *, unsigned long, const void *, unsigned);
+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);
-/*H:035 Using memory-copy operations like that is usually inconvient, so we
+/*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(lg, addr, type) \
- ({ type _v; __lgread((lg), &_v, (addr), sizeof(_v)); _v; })
+ * 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(lg, addr, type, val) \
+#define lgwrite(cpu, addr, type, val) \
do { \
typecheck(type, val); \
- __lgwrite((lg), (addr), &(val), sizeof(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
+/*
+ * 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. */
+ * in the kernel.
+ */
#define pgd_flags(x) (pgd_val(x) & ~PAGE_MASK)
-#define pte_flags(x) (pte_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: */
-void maybe_do_interrupt(struct lg_cpu *cpu);
-int deliver_trap(struct lg_cpu *cpu, unsigned int num);
+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 lguest *lg, u32 seg, u32 esp, unsigned int pages);
-void pin_stack_pages(struct lguest *lg);
+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);
int init_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(struct lg_cpu *cpu, unsigned long table, u32 num);
+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, unsigned long pgtable);
+int init_guest_pagetable(struct lguest *lg);
void free_guest_pagetable(struct lguest *lg);
-void guest_new_pagetable(struct lguest *lg, unsigned long pgtable);
+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);
-void guest_pagetable_clear_all(struct lguest *lg);
-void guest_pagetable_flush_user(struct lguest *lg);
-void guest_set_pte(struct lguest *lg, unsigned long gpgdir,
+#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);
-int demand_page(struct lguest *info, unsigned long cr2, int errcode);
-void pin_page(struct lguest *lg, unsigned long vaddr);
-unsigned long guest_pa(struct lguest *lg, unsigned long vaddr);
-void page_table_guest_data_init(struct lguest *lg);
+bool demand_page(struct lg_cpu *cpu, unsigned long cr2, int errcode);
+void pin_page(struct lg_cpu *cpu, unsigned long vaddr);
+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);
/* hypercalls.c: */
void do_hypercalls(struct lg_cpu *cpu);
-void write_timestamp(struct lguest *lg);
+void write_timestamp(struct lg_cpu *cpu);
/*L:035
* Let's step aside for the moment, to study one important routine that's used
* Like any macro which uses an "if", it is safely wrapped in a run-once "do {
* } while(0)".
*/
-#define kill_guest(lg, fmt...) \
+#define kill_guest(cpu, fmt...) \
do { \
- if (!(lg)->dead) { \
- (lg)->dead = kasprintf(GFP_ATOMIC, fmt); \
- if (!(lg)->dead) \
- (lg)->dead = ERR_PTR(-ENOMEM); \
+ 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) :*/
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff