Use of information interface to enhance output of /proc/v3vee-/v3-guests in Linux

[palacios.git] / linux_module / main.c

diff --git a/linux_module/main.c b/linux_module/main.c
index 57917e0..6996bfa 100644 (file)
--- a/linux_module/main.c
+++ b/linux_module/main.c
@@ -21,6 +21,8 @@
 
 #include <linux/proc_fs.h>
 
+#include <palacios/vmm.h>
+
 #include "palacios.h"
 #include "mm.h"
 #include "vm.h"
@@ -139,7 +141,14 @@ out_err:
        }
        case V3_FREE_GUEST: {
            unsigned long vm_idx = arg;
-           struct v3_guest * guest = guest_map[vm_idx];
+            struct v3_guest * guest;
+
+            if (vm_idx > MAX_VMS) {
+                ERROR("Invalid VM index: %ld\n", vm_idx);
+                return -1;
+            }
+
+           guest = guest_map[vm_idx];
 
            if (!guest) {
                ERROR("No VM at index %ld\n",vm_idx);
@@ -148,7 +157,11 @@ out_err:
 
            INFO("Freeing VM (%s) (%p)\n", guest->name, guest);
 
-           free_palacios_vm(guest);
+           if (free_palacios_vm(guest)<0) { 
+               ERROR("Cannot free guest at index %ld\n",vm_idx);
+               return -1;
+           }
+
            guest_map[vm_idx] = NULL;
            break;
        }
@@ -172,9 +185,25 @@ out_err:
            break;
        }
 
-       default: 
-           ERROR("\tUnhandled\n");
+        case V3_RESET_MEMORY: {
+            if (palacios_init_mm() == -1) {
+                ERROR("Error resetting Palacios memory\n");
+                return -EFAULT;
+            }
+            break;  
+        }
+
+       default: {
+           struct global_ctrl * ctrl = get_global_ctrl(ioctl);
+           
+           if (ctrl) {
+               return ctrl->handler(ioctl, arg);
+           }
+
+           WARNING("\tUnhandled global ctrl cmd: %d\n", ioctl);
+
            return -EINVAL;
+       }
     }
 
     return 0;
@@ -195,22 +224,95 @@ struct proc_dir_entry *palacios_get_procdir(void)
     return dir;
 }
 
+
+#define MAX_VCORES 32
+
 static int read_guests(char * buf, char ** start, off_t off, int count,
                       int * eof, void * data)
 {
     int len = 0;
     unsigned int i = 0;
+
+    struct v3_vm_state *s =palacios_alloc(sizeof(struct v3_vm_state)+MAX_VCORES*sizeof(struct v3_vcore_state));
+    
+    if (!s) { 
+      ERROR("No space for state structure\n");
+      goto out;
+    }
     
     for(i = 0; i < MAX_VMS; i++) {
-       if (guest_map[i] != NULL) {
-           if (len<count) { 
-               len += snprintf(buf+len, count-len,
-                               "%s\t/dev/v3-vm%d\n", 
-                               guest_map[i]->name, i);
+      if (guest_map[i] != NULL) {
+       if (len>=count) { 
+         goto out;
+       } else {
+         len += snprintf(buf+len, count-len,
+                         "%s\t/dev/v3-vm%d ", 
+                         guest_map[i]->name, i);
+         
+         if (len>=count) { 
+           *(buf+len-1)='\n';
+           goto out;
+         } else {
+           // Get extended data
+           s->num_vcores=MAX_VCORES; // max we can handle
+           if (v3_get_state_vm(guest_map[i]->v3_ctx, s)) {
+             ERROR("Cannot get VM info\n");
+             *(buf+len-1)='\n';
+             goto out;
+           } else {
+             unsigned long j;
+
+             len+=snprintf(buf+len, count-len,
+                           "%s [0x%p-0x%p] %lu vcores ",
+                           s->state==V3_VM_INVALID ? "INVALID" :
+                           s->state==V3_VM_RUNNING ? "running" :
+                           s->state==V3_VM_STOPPED ? "stopped" :
+                           s->state==V3_VM_PAUSED ? "paused" :
+                           s->state==V3_VM_ERROR ? "ERROR" :
+                           s->state==V3_VM_SIMULATING ? "simulating" : "UNKNOWN",
+                           s->mem_base_paddr, s->mem_base_paddr+s->mem_size-1,
+                           s->num_vcores);
+             if (len>=count) { 
+               *(buf+len-1)='\n';
+               goto out;
+             }
+             for (j=0;j<s->num_vcores;j++) {
+               len+=snprintf(buf+len, count-len,
+                             "[vcore %lu %s on pcore %lu %llu exits rip=0x%p %s %s %s] ",
+                             j, 
+                             s->vcore[j].state==V3_VCORE_INVALID ? "INVALID" :
+                             s->vcore[j].state==V3_VCORE_RUNNING ? "running" :
+                             s->vcore[j].state==V3_VCORE_STOPPED ? "stopped" : "UNKNOWN",
+                             s->vcore[j].pcore,
+                             s->vcore[j].num_exits,
+                             s->vcore[j].last_rip,
+                             s->vcore[j].cpu_mode==V3_VCORE_CPU_REAL ? "real" :
+                             s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED ? "protected" :
+                             s->vcore[j].cpu_mode==V3_VCORE_CPU_PROTECTED_PAE ? "protectedpae" :
+                             s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG ? "long" :
+                             s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_32_COMPAT ? "long32" :
+                             s->vcore[j].cpu_mode==V3_VCORE_CPU_LONG_16_COMPAT ? "long16" : "UNKNOWN",
+                             s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_PHYSICAL ? "physical" :
+                             s->vcore[j].mem_mode==V3_VCORE_MEM_MODE_VIRTUAL ? "virtual" : "UNKNOWN",
+                             s->vcore[j].mem_state==V3_VCORE_MEM_STATE_SHADOW ? "shadow" :
+                             s->vcore[j].mem_state==V3_VCORE_MEM_STATE_NESTED ? "nested" : "UNKNOWN");
+               if (len>=count) {
+                 *(buf+len-1)='\n';
+                 goto out;
+               }
+             }
+
+             *(buf+len-1)='\n';
+
            }
+         }
        }
+      }
     }
-    
+ 
+ out:
+    if (s) { palacios_free(s); }
+
     return len;
 }
 
@@ -316,13 +418,25 @@ static void __exit v3_exit(void) {
     extern u32 pg_frees;
     extern u32 mallocs;
     extern u32 frees;
+    int i = 0;
+    struct v3_guest * guest;
+    dev_t dev;
 
 
-    // should probably try to stop any guests
+    /* Stop and free any running VMs */ 
+    for (i = 0; i < MAX_VMS; i++) {
+       if (guest_map[i] != NULL) {
+                guest = (struct v3_guest *)guest_map[i];
 
+                if (v3_stop_vm(guest->v3_ctx) < 0) 
+                        ERROR("Couldn't stop VM %d\n", i);
 
+                free_palacios_vm(guest);
+                guest_map[i] = NULL;
+       }
+    }
 
-    dev_t dev = MKDEV(v3_major_num, MAX_VMS + 1);
+    dev = MKDEV(v3_major_num, MAX_VMS + 1);
 
     INFO("Removing V3 Control device\n");