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SubjectRe: APIC lockup in 2.4.x-x
Martin Josefsson wrote:
>
> Hi
>
> I saw your patch for the APIC lockup and I saw that it was included in
> 2.4.1-ac2 so I tried that one.. but it didn't help..
>
> I can begin with describing my machine:
>
> dual pIII 800 (133MHz FSB)
> Asus P3C-D mainboard with i820 chipset
> 256MB rimm (rambus)
> Dlink DFE570TX (4 port tulip card)
> Adaptec 29160 scsicard and 18GB scsidisk.
>

Could you apply the attached patch, enable sysrq, compile & install the
kernel, reboot and press sysrq-q after ifup?

We assumed that only the old io apic for 440 BX boards is affected, but
your board contains a newer apic intrated in the ICH.

But probably you ran into another bug - the tulip driver doesn't use
disable_irq()

--
Manfred// $Header$
// Kernel Version:
// VERSION = 2
// PATCHLEVEL = 4
// SUBLEVEL = 1
// EXTRAVERSION =
--- 2.4/drivers/net/tulip/tulip_core.c Sat Feb 3 14:02:54 2001
+++ build-2.4/drivers/net/tulip/tulip_core.c Sat Feb 3 14:04:58 2001
@@ -421,6 +421,24 @@

tulip_up (dev);

+ disable_irq(dev->irq);
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(10);
+
+{
+ long ioaddr = dev->base_addr;
+ long csr7 = inl(ioaddr + CSR7);
+ outl(NormalIntr|AbnormalIntr|TPLnkPass|TPLnkFail, ioaddr + CSR7);
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(10);
+ enable_irq(dev->irq);
+
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(10);
+ outl(csr7, ioaddr + CSR7);
+
+}
+
netif_start_queue (dev);

return 0;
--- 2.4/arch/i386/kernel/io_apic.c Sat Feb 3 14:02:24 2001
+++ build-2.4/arch/i386/kernel/io_apic.c Sat Feb 3 14:54:14 2001
@@ -693,7 +693,7 @@
printk(KERN_WARNING " to linux-smp@vger.kernel.org\n");
}

-void __init print_IO_APIC(void)
+void print_IO_APIC(void)
{
int apic, i;
struct IO_APIC_reg_00 reg_00;
@@ -1189,14 +1189,22 @@

#define shutdown_level_ioapic_irq mask_IO_APIC_irq
#define enable_level_ioapic_irq unmask_IO_APIC_irq
-#define disable_level_ioapic_irq mask_IO_APIC_irq
+static void disable_level_ioapic_irq(unsigned int i)
+{
+ /* delayed. */
+}

static void end_level_ioapic_irq (unsigned int i)
{
ack_APIC_irq();
}

-static void mask_and_ack_level_ioapic_irq (unsigned int i) { /* nothing */ }
+static void mask_and_ack_level_ioapic_irq (unsigned int i)
+{
+ if (irq_desc[i].status & IRQ_DISABLED) {
+ mask_IO_APIC_irq(i);
+ }
+}

static void set_ioapic_affinity (unsigned int irq, unsigned long mask)
{
--- 2.4/arch/i386/kernel/apic.c Sat Feb 3 14:02:24 2001
+++ build-2.4/arch/i386/kernel/apic.c Sat Feb 3 14:42:47 2001
@@ -270,7 +270,7 @@
* PCI Ne2000 networking cards and PII/PIII processors, dual
* BX chipset. ]
*/
-#if 0
+#if 1
/* Enable focus processor (bit==0) */
value &= ~(1<<9);
#else
--- 2.4/drivers/char/sysrq.c Mon Dec 4 02:48:19 2000
+++ build-2.4/drivers/char/sysrq.c Sat Feb 3 14:33:51 2001
@@ -137,6 +137,10 @@
send_sig_all(SIGKILL, 1);
orig_log_level = 8;
break;
+ case 'q':
+ print_all_local_APICs();
+ print_IO_APIC();
+ break;
default: /* Unknown: help */
if (kbd)
printk("unRaw ");







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