On Monday 25 February 2008 09:05:49 Stefan Hellermann wrote:
> Hello,
>
> I would like to try lguest, but I it doesn't work here. When I load lg it
> says: FATAL: Error inserting lg
> (/lib/modules/2.6.25-rc2-via/kernel/drivers/lguest/lg.ko): Cannot allocate
> memory
>
> dmesg says:
> allocation failed: out of vmalloc space - use vmalloc=<size> to increase
> size. lguest: could not map switcher pages high
OK, I found this one (sorry for the delay, I was away).
Does this work for you? It works for me...
Thanks very much for your report!
Rusty.
==
Robert Bragg's 5dc331852848a38ca00a2817e5b98a1d0561b116 tightened
(ie. fixed) the checking in __get_vm_area, and it broke lguest.
lguest should pass a valid "end" parameter, not some random constant.
Signed-off-by: Rusty Russell <[EMAIL PROTECTED]>
Cc: Robert Bragg <[EMAIL PROTECTED]>
diff -r f5dc1442dc61 drivers/lguest/core.c
--- a/drivers/lguest/core.c Tue Mar 04 14:21:38 2008 +1100
+++ b/drivers/lguest/core.c Tue Mar 04 21:06:41 2008 +1100
@@ -71,9 +71,11 @@ static __init int map_switcher(void)
/* Now we reserve the "virtual memory area" we want: 0xFFC00000
* (SWITCHER_ADDR). We might not get it in theory, but in practice
- * it's worked so far. */
+ * it's worked so far. The +1 is because __get_vm_area allocates a
+ * guard page, so we need space for that. */
switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE,
- VM_ALLOC, SWITCHER_ADDR, VMALLOC_END);
+ VM_ALLOC, SWITCHER_ADDR, SWITCHER_ADDR
+ + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE);
if (!switcher_vma) {
err = -ENOMEM;
printk("lguest: could not map switcher pages high\n");
_______________________________________________
Lguest mailing list
[email protected]
https://ozlabs.org/mailman/listinfo/lguest
