Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f34f8c5fea079065671163c37d98328cff31980b
Commit: f34f8c5fea079065671163c37d98328cff31980b
Parent: c40a9f4719d36841a2d7ff4fe866dce7bfb454b7
Author: Glauber de Oliveira Costa <[EMAIL PROTECTED]>
AuthorDate: Thu Jan 17 19:13:26 2008 -0200
Committer: Rusty Russell <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 22:50:16 2008 +1100
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 <[EMAIL PROTECTED]>
Signed-off-by: Rusty Russell <[EMAIL PROTECTED]>
---
drivers/lguest/lg.h | 3 ++-
drivers/lguest/lguest_user.c | 8 ++++----
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 94e518d..f1c4c33 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 f4f6df8..a87fca6 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 10eab67..f8dfdc9 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;
}
-
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