Re: PR/49328 CVS commit: src/sys/dev/pci/ixgbe

[christos%zoulas.com@localhost (Christos Zoulas)]

On Feb 1,  5:18pm, 6bone%6bone.informatik.uni-leipzig.de@localhost (6bone%6bone.informatik.uni-leipzig.de@localhost) wrote:
-- Subject: Re: PR/49328 CVS commit: src/sys/dev/pci/ixgbe

| On Fri, 30 Jan 2015, Christos Zoulas wrote:
| 
| > Add this to it:
| >
| > christos
| >
| > Index: uvm_map.c
| 
| The problem is not solved. The crash dump is slightly different from the 
| last one.

Yes, and my plan is to first fix the NOSLEEP allocation issues and then
fix the driver so it does not do the deallocation/allocation needlessly.
Here's the next patch for the first target...

Index: uvm_map.c
===================================================================
RCS file: /cvsroot/src/sys/uvm/uvm_map.c,v
retrieving revision 1.332
diff -u -u -r1.332 uvm_map.c
--- uvm_map.c	23 Jan 2015 16:13:53 -0000	1.332
+++ uvm_map.c	1 Feb 2015 16:29:46 -0000
@@ -1182,8 +1182,10 @@
 	 * If the kernel pmap can't map the requested space,
 	 * then allocate more resources for it.
 	 */
-	if (map == kernel_map && uvm_maxkaddr < (start + size))
-		uvm_maxkaddr = pmap_growkernel(start + size);
+	if (map == kernel_map && uvm_maxkaddr < (start + size)) {
+		if (flags & UVM_FLAG_NOWAIT == 0)
+			uvm_maxkaddr = pmap_growkernel(start + size);
+	}
 #endif
 
 	UVMMAP_EVCNT_INCR(map_call);