#include <linux/types.h>
#include <linux/init.h>
#include <linux/stringify.h>
-#include <linux/futex.h>
#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>
void free_pagetables(void);
int init_pagetables(struct page **switcher_page, unsigned int pages);
-struct lguest_dma_info
-{
- struct list_head list;
- union futex_key key;
- unsigned long dmas;
- struct lguest *owner;
- u16 next_dma;
- u16 num_dmas;
- u8 interrupt; /* 0 when not registered */
-};
-
struct pgdir
{
unsigned long gpgdir;
#define CHANGED_GDT_TLS 4 /* Actually a subset of CHANGED_GDT */
#define CHANGED_ALL 3
-/* The private info the thread maintains about the guest. */
-struct lguest
-{
- /* At end of a page shared mapped over lguest_pages in guest. */
- unsigned long regs_page;
- struct lguest_regs *regs;
- struct lguest_data __user *lguest_data;
+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 */
- u32 pfn_limit;
- /* This provides the offset to the base of guest-physical
- * memory in the Launcher. */
- void __user *mem_base;
- u32 page_offset;
+
u32 cr2;
- int halted;
int ts;
- u32 next_hcall;
u32 esp1;
u8 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;
+ int halted;
- /* Bitmap of what has changed: see CHANGED_* above. */
- int changed;
- struct lguest_pages *last_pages;
+ /* Pending virtual interrupts */
+ DECLARE_BITMAP(irqs_pending, LGUEST_IRQS);
- /* We keep a small number of these. */
- u32 pgdidx;
- struct pgdir pgdirs[4];
+ struct lg_cpu_arch arch;
+};
- /* Cached wakeup: we hold a reference to this task. */
- struct task_struct *wake;
+/* 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;
+
+ u32 pfn_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_start, noirq_end;
- int dma_is_pending;
- unsigned long pending_dma; /* struct lguest_dma */
- unsigned long pending_key; /* address they're sending to */
unsigned int stack_pages;
u32 tsc_khz;
- struct lguest_dma_info dma[LGUEST_MAX_DMA];
-
/* Dead? */
const char *dead;
-
- struct lguest_arch arch;
-
- /* Virtual clock device */
- struct hrtimer hrt;
-
- /* Pending virtual interrupts */
- DECLARE_BITMAP(irqs_pending, LGUEST_IRQS);
};
extern struct mutex lguest_lock;
/* core.c: */
-u32 lgread_u32(struct lguest *lg, unsigned long addr);
-void lgwrite_u32(struct lguest *lg, unsigned long addr, u32 val);
-void lgread(struct lguest *lg, void *buf, unsigned long addr, unsigned len);
-void lgwrite(struct lguest *lg, unsigned long, const void *buf, unsigned len);
int lguest_address_ok(const struct lguest *lg,
unsigned long addr, unsigned long len);
-int run_guest(struct lguest *lg, unsigned long __user *user);
+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
+ * 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
#define pgd_pfn(x) (pgd_val(x) >> PAGE_SHIFT)
/* interrupts_and_traps.c: */
-void maybe_do_interrupt(struct lguest *lg);
-int deliver_trap(struct lguest *lg, unsigned int num);
-void load_guest_idt_entry(struct lguest *lg, 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 maybe_do_interrupt(struct lg_cpu *cpu);
+int 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 lguest *lg, struct desc_struct *idt,
+void copy_traps(const struct lg_cpu *cpu, struct desc_struct *idt,
const unsigned long *def);
-void guest_set_clockevent(struct lguest *lg, unsigned long delta);
-void init_clockdev(struct lguest *lg);
+void guest_set_clockevent(struct lg_cpu *cpu, unsigned long delta);
+void init_clockdev(struct lg_cpu *cpu);
+bool check_syscall_vector(struct lguest *lg);
+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 lguest *lg);
-void load_guest_gdt(struct lguest *lg, unsigned long table, u32 num);
-void guest_load_tls(struct lguest *lg, unsigned long tls_array);
-void copy_gdt(const struct lguest *lg, struct desc_struct *gdt);
-void copy_gdt_tls(const struct lguest *lg, struct desc_struct *gdt);
+void setup_guest_gdt(struct lg_cpu *cpu);
+void load_guest_gdt(struct lg_cpu *cpu, unsigned long table, u32 num);
+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);
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_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,
+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 lguest *lg, struct lguest_pages *pages);
-int demand_page(struct lguest *info, unsigned long cr2, int errcode);
-void pin_page(struct lguest *lg, unsigned long vaddr);
+void map_switcher_in_guest(struct lg_cpu *cpu, struct lguest_pages *pages);
+int 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);
void lguest_arch_host_fini(void);
-void lguest_arch_run_guest(struct lguest *lg);
-void lguest_arch_handle_trap(struct lguest *lg);
-int lguest_arch_init_hypercalls(struct lguest *lg);
-int lguest_arch_do_hcall(struct lguest *lg, struct hcall_args *args);
-void lguest_arch_setup_regs(struct lguest *lg, unsigned long start);
+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);
/* <arch>/switcher.S: */
extern char start_switcher_text[], end_switcher_text[], switch_to_guest[];
int lguest_device_init(void);
void lguest_device_remove(void);
-/* io.c: */
-void lguest_io_init(void);
-int bind_dma(struct lguest *lg,
- unsigned long key, unsigned long udma, u16 numdmas, u8 interrupt);
-void send_dma(struct lguest *info, unsigned long key, unsigned long udma);
-void release_all_dma(struct lguest *lg);
-unsigned long get_dma_buffer(struct lguest *lg, unsigned long key,
- unsigned long *interrupt);
-
/* hypercalls.c: */
-void do_hypercalls(struct lguest *lg);
-void write_timestamp(struct lguest *lg);
+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 does something invalid, like pass crap
+ * 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
* 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) :*/
-static inline unsigned long guest_pa(struct lguest *lg, unsigned long vaddr)
-{
- return vaddr - lg->page_offset;
-}
#endif /* __ASSEMBLY__ */
#endif /* _LGUEST_H */
projects / linux-2.6 / blobdiff