Re: tried ia64-net-20020506.iso, (rx4610) failed with map_single IO TLB kernel panic...
On Wed, May 22, 2002 at 05:36:07PM -0700, David Mosberger wrote:
> >>>>> On Wed, 22 May 2002 13:45:36 +0200, "Jiri Polach" <sprava@jh-inst.cas.cz> said:
>
> Jiri> To be more specific:
>
> Jiri> "Kernel panic: map_single: could not allocate software IO TLB
> Jiri> (1552 bytes)"
>
> Jiri> So strictly speaking I probably do not need swiotlb=32768, but
> Jiri> something like swiotlb=2048 should be sufficient. On the other
> Jiri> hand the default is too small.
>
> Yes, but I'm wondering why 1024 isn't enough. IIRC, the eepro100
> driver uses a tx/rx buffer that has at most 64 packets, so a software
> I/O TLB of 2MB should be plenty big. Also, I have never seen this
> problem myself, so I'm wondering whether this problem pops up only
> under certain circumstances.
I see this patch in the debian ia64 kernel sources, which sounds like it
might be relevant. No idea why it is there, but it is part of the hplso
diff.
Richard
diff -urN --exclude-from=/home/rh-ia64/ia64/redhat/dontdiff ../ia64/linux/drivers/net/eepro100.c linux/drivers/net/eepro100.c
--- ../ia64/linux/drivers/net/eepro100.c Fri Jan 25 13:11:22 2002
+++ linux/drivers/net/eepro100.c Wed Feb 27 15:19:22 2002
@@ -70,8 +70,8 @@
/* A few values that may be tweaked. */
/* The ring sizes should be a power of two for efficiency. */
-#define TX_RING_SIZE 32
-#define RX_RING_SIZE 32
+#define TX_RING_SIZE 64
+#define RX_RING_SIZE 1024
/* How much slots multicast filter setup may take.
Do not descrease without changing set_rx_mode() implementaion. */
#define TX_MULTICAST_SIZE 2
--
To UNSUBSCRIBE, email to debian-ia64-request@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
Reply to: