Re: SMP Kernel 2.4.32

On Mon, 06 Feb 2006, Rainer Wiener wrote:

> System:
>
> CPU: Pentium 4
> RAM: 2GB
> Netzwerkkarte: VIA-VT6102 [Rhine-II]
> IDE interface: VT82C586A/B/VT82C686/A/B/VT823x/A/C
>

So es tut nun diesen Patch etwas auf den 2.4.32 umgebogen und es tut.
Ist ein Patch für den Patch. Denn um den 2.4.22 haben die da was
geändert, da die Probs mit einigen Mainboards hatten. (Ja das Leben
schlägt immer wieder zu ;))

--- linux-2.4.24.old/arch/i386/kernel/io_apic.c Mon Jan 5 15:10:33 2004
+++ linux-2.4.24/arch/i386/kernel/io_apic.c Thu Jan 8 14:40:03 2004
@@ -125,7 +125,7 @@
                        break;
\
                reg = io_apic_read(entry->apic, 0x10 + R + pin*2);
\
                reg ACTION;
\
- io_apic_write(entry->apic, 0x10 + R + pin*2, reg);
                \
+ io_apic_modify(entry->apic, reg); \
                if (!entry->next)
\
                        break;
\
                entry = irq_2_pin + entry->next;
\
--- linux-2.4.24.old/include/asm-i386/io_apic.h Mon Jan 5 15:34:34 2004
+++ linux-2.4.24/include/asm-i386/io_apic.h Fri Jan 9 10:04:33 2004
@@ -123,6 +123,15 @@
 }

 /*
+ * Re-write a value: to be used for read-modify-write
+ * cycles where the read already set up the index register.
+ */
+static inline void io_apic_modify(unsigned int apic, unsigned int
value)
+{
+ *(IO_APIC_BASE(apic)+4) = value;
+}
+
+/*
  * Synchronize the IO-APIC and the CPU by doing
  * a dummy read from the IO-APIC
  */

cu
Rainer

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