After applying the patch it booted all the way but the keyboard would hang.
BTW I'm trying to port this patch back to the 2.2.18 TL-Kernel. Are there anymore changes I have to
look at ?
--- arch/i386/kernel/io_apic.c.old Wed May 16 12:48:03 2001
+++ arch/i386/kernel/io_apic.c Wed May 16 12:55:30 2001
@@ -204,6 +204,8 @@
/*
* We disable IO-APIC IRQs by setting their 'destination CPU mask' to
* zero. Trick by Ramesh Nalluri.
+ * Not anymore. This causes problems on some IO-APIC's, notably AMD 760MP's
+ * So we do it a more 2.4 kind of way now which should be safer -jerdfelt
*/
DO_ACTION( mask, 0, |= 0x00010000, io_apic_sync(entry->apic))/* mask = 1 */
DO_ACTION( unmask, 0, &= 0xfffeffff, ) /* mask = 0 */
@@ -646,8 +648,8 @@
entry.delivery_mode = dest_LowestPrio;
entry.dest_mode = 1; /* logical delivery */
- entry.mask = 0; /* enable IRQ */
- entry.dest.logical.logical_dest = 0xff; /* but no route */
+ entry.mask = 1; /* disable IRQ */
+ entry.dest.logical.logical_dest = 0xff;
idx = find_irq_entry(apic,pin,mp_INT);
if (idx == -1) {
On Thu, May 24, 2001 at 03:36:54PM -0400, Johannes Erdfelt wrote:
> On Thu, May 24, 2001, Prasanna P Subash <psubash@turbolinux.com> wrote:
> > I have a dual athlon on the 760MP chipset.
> > 2.2.20pre1 and 2 dont work. I got it to work partly after applying Johannes
> > Erdfel's 760MP patch in io_apic.c. Even after applying the patch, there
> > are messages like
>
> 2.2.20pre1 and pre2 both have the patch I created already applied. If
> you had to apply them yourself then something is wrong.
>
> > hdc: IRQ probe failed(0)
> > hdd: IRQ probe failed(0)
> > hde: IRQ probe failed(0)
> >
> > hdc: lost interrupt
> > hdc: lost interrupt
> >
> > and then the machine hangs randomly. I an guessing the io_apic does not
> > route the interrupts correctly.
>
> That would be the problem.
>
> Which patch of mine did you apply? Which motherboard are you doing your
> testing with?
>
> JE
-- Prasanna Subash --- psubash@turbolinux.com --- TurboLinux, INC ------------------------------------------------------------------------ Linux, the choice | The only real advantage to punk music is of a GNU generation -o) | that nobody can whistle it. Kernel 2.4.1 /\\ | on a i686 _\\_v | | ------------------------------------------------------------------------ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/