diff options
| author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-01-17 19:13:26 -0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-01-30 22:50:16 +1100 |
| commit | f34f8c5fea079065671163c37d98328cff31980b (patch) | |
| tree | 73a97cb67c1450b21587cbadde7a7dad6c58d46d | |
| parent | c40a9f4719d36841a2d7ff4fe866dce7bfb454b7 (diff) | |
lguest: move last_pages to lg_cpu
in our new model, pages are assigned to a virtual cpu, not to a guest.
We move it to the lg_cpu structure.
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| -rw-r--r-- | drivers/lguest/lg.h | 3 | ||||
| -rw-r--r-- | drivers/lguest/lguest_user.c | 8 | ||||
| -rw-r--r-- | drivers/lguest/x86/core.c | 4 |
3 files changed, 8 insertions, 7 deletions
diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h index 94e518da9aa8..f1c4c33e4153 100644 --- a/drivers/lguest/lg.h +++ b/drivers/lguest/lg.h @@ -57,6 +57,8 @@ struct lg_cpu { 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. */ @@ -92,7 +94,6 @@ struct lguest /* Bitmap of what has changed: see CHANGED_* above. */ int changed; - struct lguest_pages *last_pages; struct pgdir pgdirs[4]; diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c index f4f6df85bece..a87fca678c6b 100644 --- a/drivers/lguest/lguest_user.c +++ b/drivers/lguest/lguest_user.c @@ -131,6 +131,10 @@ static int lg_cpu_start(struct lg_cpu *cpu, unsigned id, unsigned long start_ip) * reference, it is destroyed before close() is called. */ cpu->mm = get_task_mm(cpu->tsk); + /* We remember which CPU's pages this Guest used last, for optimization + * when the same Guest runs on the same CPU twice. */ + cpu->last_pages = NULL; + return 0; } @@ -192,10 +196,6 @@ static int initialize(struct file *file, const unsigned long __user *input) if (err) goto free_regs; - /* We remember which CPU's pages this Guest used last, for optimization - * when the same Guest runs on the same CPU twice. */ - lg->last_pages = NULL; - /* We keep our "struct lguest" in the file's private_data. */ file->private_data = lg; diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c index 10eab6748d84..f8dfdc9a3e5b 100644 --- a/drivers/lguest/x86/core.c +++ b/drivers/lguest/x86/core.c @@ -80,9 +80,9 @@ static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages) * same Guest we ran last time (and that Guest hasn't run anywhere else * meanwhile). If that's not the case, we pretend everything in the * Guest has changed. */ - if (__get_cpu_var(last_cpu) != cpu || lg->last_pages != pages) { + if (__get_cpu_var(last_cpu) != cpu || cpu->last_pages != pages) { __get_cpu_var(last_cpu) = cpu; - lg->last_pages = pages; + cpu->last_pages = pages; lg->changed = CHANGED_ALL; } |