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Remove fixed limit on number of guests, and lguests array.

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Back when we had all the Guest state in the switcher, we had a fixed
array of them.  This is no longer necessary.

If we switch the network code to using random_ether_addr (46 bits is
enough to avoid clashes), we can get rid of the concept of "guest id"
altogether.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2007-10-22 11:03:27 +10:00
parent 3c6b5bfa3c
commit 48245cc070
7 changed files with 14 additions and 45 deletions
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5
drivers/lguest/lg.h
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@@ -51,9 +51,9 @@ struct lguest_dma_info
struct list_head list;
union futex_key key;
unsigned long dmas;
struct lguest *owner;
u16 next_dma;
u16 num_dmas;
u16 guestid;
u8 interrupt; /* 0 when not registered */
};
@@ -140,7 +140,6 @@ struct lguest
struct lguest_data __user *lguest_data;
struct task_struct *tsk;
struct mm_struct *mm; /* == tsk->mm, but that becomes NULL on exit */
u16 guestid;
u32 pfn_limit;
/* This provides the offset to the base of guest-physical
* memory in the Launcher. */
@@ -195,7 +194,6 @@ struct lguest
DECLARE_BITMAP(irqs_pending, LGUEST_IRQS);
};
extern struct lguest lguests[];
extern struct mutex lguest_lock;
/* core.c: */
@@ -203,7 +201,6 @@ 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 find_free_guest(void);
int lguest_address_ok(const struct lguest *lg,
unsigned long addr, unsigned long len);
int run_guest(struct lguest *lg, unsigned long __user *user);