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linux-2.6/arch/i386/kernel
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Natalie Protasevich c434b7a6ae [PATCH] x86: avoid wasting IRQs for PCI devices 
I have submitted the patch for x86_64, this is submission for i386.

The patch changes the way IRQs are handed out to PCI devices.  Currently,
each I/O APIC pin gets associated with an IRQ, no matter if the pin is used
or not.  This imposes severe limitation on systems that have designs that
employ many I/O APICs, only utilizing couple lines of each, such as P64H2
chipset.  It is used in ES7000, and currently, there is no way to boot the
system with more that 9 I/O APICs.

The simple change below allows to boot a system with say 64 (or more) I/O
APICs, each providing 1 slot, which otherwise impossible because of the IRQ
gaps created for unused lines on each I/O APIC.  It does not resolve the
problem with number of devices that exceeds number of possible IRQs, but
eases up a tension for IRQs on any large system with potentually large
number of devices.

Signed-off-by: Natalie Protasevich <Natalie.Protasevich@unisys.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2005-06-23 09:45:10 -07:00
..
acpi Fix acpi_find_rsdp() - acpi_scan_rsdp takes length, not end 2005-05-06 15:39:23 -07:00
cpu [CPUFREQ] Typos. 2005-05-31 19:03:52 -07:00
timers [PATCH] Platform SMIs and their interferance with tsc based delay calibration 2005-06-23 09:45:08 -07:00
Makefile [PATCH] Stop arch/i386/kernel/vsyscall-note.o being rebuilt every time 2005-06-08 16:21:13 -07:00
apic.c [PATCH] check nmi watchdog is broken 2005-05-01 08:58:48 -07:00
apm.c [PATCH] apm.c: ignore_normal_resume is set a bit too late 2005-06-14 07:19:35 -07:00
asm-offsets.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bootflag.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpuid.c [PATCH] class: convert arch/* to use the new class api instead of class_simple 2005-06-20 15:15:09 -07:00
dmi_scan.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
doublefault.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
early_printk.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
efi.c [PATCH] efi: eliminate bad section references 2005-04-16 15:25:53 -07:00
efi_stub.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
entry.S [PATCH] uml: fix syscall table by including $(SUBARCH)'s one, for i386 2005-05-01 08:58:55 -07:00
head.S [PATCH] clean up kernel messages 2005-05-01 08:59:02 -07:00
i386_ksyms.c [PATCH] x86_64: make string func definition work as intended 2005-05-05 16:36:33 -07:00
i387.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
i8259.c [PATCH] pm_message_t: more fixes in common and i386 2005-04-16 15:25:24 -07:00
init_task.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
io_apic.c [PATCH] Do not enforce unique IO_APIC_ID check for xAPIC systems (i386) 2005-06-23 09:45:09 -07:00
ioport.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kprobes.c [PATCH] Kprobes: Incorrect handling of probes on ret/lret instruction 2005-05-05 16:36:39 -07:00
ldt.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mca.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
microcode.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mpparse.c [PATCH] x86: avoid wasting IRQs for PCI devices 2005-06-23 09:45:10 -07:00
msr.c [PATCH] class: convert arch/* to use the new class api instead of class_simple 2005-06-20 15:15:09 -07:00
nmi.c [PATCH] adjust i386 watchdog tick calculation 2005-06-23 09:45:09 -07:00
numaq.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci-dma.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
process.c [PATCH] x86 stack initialisation fix 2005-05-05 16:36:30 -07:00
ptrace.c Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git 2005-05-03 08:14:09 +01:00
quirks.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
reboot.c [PATCH] x86 reboot: Add reboot fixup for gx1/cs5530a 2005-05-01 08:58:49 -07:00
reboot_fixups.c [PATCH] x86 reboot: Add reboot fixup for gx1/cs5530a 2005-05-01 08:58:49 -07:00
scx200.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.c [PATCH] sparsemem memory model for i386 2005-06-23 09:45:05 -07:00
sigframe.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
signal.c [PATCH] i386: never block forced SIGSEGV 2005-06-23 09:45:09 -07:00
smp.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
smpboot.c [PATCH] x86: fix smp_num_siblings on buggy BIOSes 2005-05-28 11:14:00 -07:00
srat.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
summit.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sys_i386.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
syscall_table.S [PATCH] VM: early zone reclaim 2005-06-21 18:46:14 -07:00
sysenter.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
time.c [PATCH] i386: fix hpet for systems that don't support legacy replacement 2005-05-01 08:58:50 -07:00
time_hpet.c [PATCH] i386: fix hpet for systems that don't support legacy replacement 2005-05-01 08:58:50 -07:00
trampoline.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
traps.c [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
vm86.c [PATCH] misc verify_area cleanups 2005-05-01 08:59:08 -07:00
vmlinux.lds.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vsyscall-int80.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vsyscall-note.S [PATCH] i386 vDSO: add PT_NOTE segment 2005-04-16 15:24:48 -07:00
vsyscall-sigreturn.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vsyscall-sysenter.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vsyscall.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vsyscall.lds.S [PATCH] i386 vDSO: add PT_NOTE segment 2005-04-16 15:24:48 -07:00