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xen-devel
Re: [Xen-devel] Re: Partial workaround for probs with 3ware Controller
Ian Pratt wrote:
Can xen hackers confirm if the acpi code is up-to-date?
The current acpi/apic code is around 2.4.22 vintage, which is
after most of the nasty bios table parsing problems.
It probably wouldn't hurt to freshen it, though.
Any volunteers?
Not me. I can't (won't) ruin a good project like xen :-)
(ehehehehe)
Anyway, maybe if all the cpus are detected the current code will work
(an upgrade is still the better way...).
Just edit xeno-unstable.bk/xen/include/asm-x86/config.h and change:
"#define NR_CPUS 16" to
"#define NR_CPUS 160".
This will waste some memory for some structs but it shouldn't hurt, YMMV.
Doing a diff from mpparse.c in xen and 2.6 demonstrates that the method
to find if the processor is invalid or not has changed:
@@ -987,7 +836,7 @@
struct mpc_config_processor processor;
int boot_cpu = 0;
- if (id >= MAX_APICS) {
+ if (MAX_APICS - id <= 0) {
printk(KERN_WARNING "Processor #%d invalid (max %d)\n",
id, MAX_APICS);
return;
Also, 2.6 acpi code works better in some boxen. Maybe because it's more
bleeding edge?
Regards,
Nuno Silva
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