lguest: per-vcpu lguest task management

lguest uses tasks to control its running behaviour (like sending
breaks, controlling halted state, etc). In a per-vcpu environment,
each vcpu will have its own underlying task. So this patch
makes the infrastructure for that possible

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h
index d08b85342b92..e7123fa6127f 100644
--- a/drivers/lguest/lg.h
+++ b/drivers/lguest/lg.h
@@ -43,6 +43,8 @@ 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.  */
         unsigned long regs_page;
@@ -55,6 +57,11 @@ struct lg_cpu {
         /* 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;
+
         /* Pending virtual interrupts */
         DECLARE_BITMAP(irqs_pending, LGUEST_IRQS);
 
@@ -65,8 +72,6 @@ struct lg_cpu {
 struct lguest
 {
         struct lguest_data __user *lguest_data;
-        struct task_struct *tsk;
-        struct mm_struct *mm;   /* == tsk->mm, but that becomes NULL on exit */
         struct lg_cpu cpus[NR_CPUS];
         unsigned int nr_cpus;
 
@@ -76,15 +81,10 @@ struct lguest
         void __user *mem_base;
         unsigned long kernel_address;
         u32 cr2;
-        int halted;
         int ts;
         u32 esp1;
         u8 ss1;
 
-        /* Do we need to stop what we're doing and return to userspace? */
-        int break_out;
-        wait_queue_head_t break_wq;
-
         /* Bitmap of what has changed: see CHANGED_* above. */
         int changed;
         struct lguest_pages *last_pages;