linux/arch
Eric W. Biederman fcfd636a72 [PATCH] i386 io_apic.c: Memorize at bootup where the i8259 is connected
Currently we attempt to restore virtual wire mode on reboot, which only
works if we can figure out where the i8259 is connected.  This is very
useful when we kexec another kernel and likely helpful when dealing with a
BIOS that make assumptions about how the system is setup.

Since the acpi MADT table does not provide the location where the i8259 is
connected we have to look at the hardware to figure it out.

Most systems have the i8259 connected the local apic of the cpu so won't be
affected but people running Opteron and some serverworks chipsets should be
able to use kexec now.

In addition this patch removes the hard coded assumption that the io_apic
that delivers isa interrups is always known to the kernel as io_apic 0.  As
there does not appear to be anything to guarantee that assumption is true.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:12 -08:00
..
alpha [PATCH] memory hotplug locking: node_size_lock 2005-10-29 21:40:44 -07:00
arm [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
arm26 [PATCH] mm: arches skip ptlock 2005-10-29 21:40:40 -07:00
cris [PATCH] mm: cris v32 mmu_context_lock 2005-10-29 21:40:42 -07:00
frv [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
h8300 kbuild: h8300,m68knommu,sh,sh64 use generic asm-offsets.h support 2005-09-09 20:28:49 +02:00
i386 [PATCH] i386 io_apic.c: Memorize at bootup where the i8259 is connected 2005-10-30 17:37:12 -08:00
ia64 [PATCH] memory hotplug locking: node_size_lock 2005-10-29 21:40:44 -07:00
m32r [PATCH] memory hotplug locking: node_size_lock 2005-10-29 21:40:44 -07:00
m68k [PATCH] mm: init_mm without ptlock 2005-10-29 21:40:40 -07:00
m68knommu [PATCH] m68knommu: startup code for the Drangen Engine 68328 based board 2005-09-12 20:04:15 -07:00
mips [PATCH] mm: init_mm without ptlock 2005-10-29 21:40:40 -07:00
parisc [PATCH] memory hotplug locking: node_size_lock 2005-10-29 21:40:44 -07:00
ppc [PATCH] mm: init_mm without ptlock 2005-10-29 21:40:40 -07:00
ppc64 [PATCH] memory hotplug: ppc64 specific hot-add functions 2005-10-29 21:40:45 -07:00
s390 [PATCH] mm: init_mm without ptlock 2005-10-29 21:40:40 -07:00
sh [PATCH] mm: i386 sh sh64 ready for split ptlock 2005-10-29 21:40:41 -07:00
sh64 [PATCH] mm: i386 sh sh64 ready for split ptlock 2005-10-29 21:40:41 -07:00
sparc [PATCH] mm: arches skip ptlock 2005-10-29 21:40:40 -07:00
sparc64 [PATCH] mm: arches skip ptlock 2005-10-29 21:40:40 -07:00
um [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
v850 [PATCH] V850: C99 initializers for hw_interrupt_type structures 2005-09-10 10:06:27 -07:00
x86_64 [PATCH] FPU context corrupted after resume 2005-10-30 17:37:11 -08:00
xtensa [PATCH] gfp_t: dma-mapping (xtensa) 2005-10-28 08:16:49 -07:00