[spyre] Update memlock ulimit for sentient group based on card count

Multi-card Spyre containers can eventually exhaust locked memory,
causing the containers to exit unexpectedly.

Update the memlock configuration to scale based on the number of
Spyre cards present in the system. This sets the memlock limit to
the maximum value containers may consume, preventing exits due to
locked memory exhaustion.

The memlimit value was determined experimentally using:
memlimit = (number_of_spyre_cards) * (128GB + 16MB)

Signed-off-by: Sahithi Ravindranath <Sahithi.Ravindranath@ibm.com>

Author: sahithiRavindranath

servicereportpkg/validate/plugins/spyre.py

@@ -30,10 +30,21 @@ def __init__(self):
         self.name = Spyre.__name__
         self.description = Spyre.__doc__
 
+    """
+    This helper function identifies spyre cards among the existing pci cards
+    and gets the number of spyre cards available in the system.
+
+    Args:
+        None
+
+    Returns:
+        int: number of spyre cards in the system.
+    """
     @classmethod
-    def is_spyre_card_exists(cls):
-        """Return True if spyre exists in the system otherwise False"""
+    def get_number_of_spyre_cards(cls):
+        """Returns number of spyre cards in the device"""
 
+        number_of_cards = 0
         context = pyudev.Context()
         # IBM vendor ID
         spyre_vendor_ids = ["0x1014"]
@@ -49,15 +60,15 @@ def is_spyre_card_exists(cls):
             if device_id not in spyre_device_ids:
                 continue
 
-            return True
+            number_of_cards += 1
 
-        return False
+        return number_of_cards
 
     @classmethod
     def is_applicable(cls):
         """Returns True if plugin is applicable otherwise False"""
 
-        return Spyre.is_spyre_card_exists()
+        return (Spyre.get_number_of_spyre_cards())>0
 
     def check_driver_config(self):
         """VFIO Driver configuration"""
@@ -185,7 +196,8 @@ def validate_mem_limit_config(self, conf_check,
     def check_memlock_conf(self):
         """User memlock configuration"""
 
-        memlimit = 134217728
+        num_cards = Spyre.get_number_of_spyre_cards()
+        memlimit = num_cards * 134234112
         vfio_mem_conf = [f"@sentient - memlock {memlimit}"]
         config_file = "/etc/security/limits.d/memlock.conf"