q3k/linux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
linux/arch/x86_64/kernel
History
Eric W. Biederman 610142927b [PATCH] x86_64 irq: Safely cleanup an irq after moving it. 
The problem:  After moving an interrupt when is it safe to teardown
the data structures for receiving the interrupt at the old location?

With a normal pci device it is possible to issue a read to a device
to flush all posted writes.  This does not work for the oldest ioapics
because they are on a 3-wire apic bus which is a completely different
data path.  For some more modern ioapics when everything is using
front side bus delivery you can flush interrupts by simply issuing a
read to the ioapic.  For other modern ioapics emperical testing has
shown that this does not work.

So it appears the only reliable way to know the last of the irqs from an
ioapic have been received from before the ioapic was reprogrammed is to
received the first irq from the ioapic from after it was reprogrammed.

Once we know the last irq message has been received from an ioapic
into a local apic we then need to know that irq message has been
processed through the local apics.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-26 10:34:08 -08:00
..
acpi [PATCH] x86-64: Remove fastcall references in x86_64 code 2007-02-13 13:26:22 +01:00
cpufreq [CPUFREQ] select consistently 2006-12-22 22:45:41 -05:00
aperture.c [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1 2006-09-26 10:52:41 +02:00
apic.c [PATCH] time: x86_64: convert x86_64 to use GENERIC_TIME 2007-02-16 08:14:00 -08:00
asm-offsets.c [CRYPTO] all: Pass tfm instead of ctx to algorithms 2006-06-26 17:34:39 +10:00
audit.c [PATCH] audit: AUDIT_PERM support 2006-09-11 13:32:30 -04:00
crash.c [PATCH] Kexec / Kdump: Unify elf note code 2006-12-07 08:39:46 -08:00
crash_dump.c [PATCH] kdump: read previous kernel's memory 2006-01-10 08:01:28 -08:00
e820.c [PATCH] x86-64: Fix fake numa for x86_64 machines with big IO hole 2007-02-13 13:26:22 +01:00
early-quirks.c ACPI: acpi_table_parse() now returns success/fail, not count 2007-02-13 02:58:52 -05:00
early_printk.c [PATCH] x86_64: fix 'earlyprintk=...,keep' regression 2006-11-28 10:58:21 -08:00
entry.S [PATCH] x86_64 irq: Safely cleanup an irq after moving it. 2007-02-26 10:34:08 -08:00
functionlist [NET]: make skb_release_data() static 2006-06-29 16:58:30 -07:00
genapic.c ACPICA: use new ACPI headers. 2007-02-02 21:14:28 -05:00
genapic_cluster.c [PATCH] x86_64 irq: Allocate a vector across all cpus for genapic_flat. 2006-10-08 12:24:02 -07:00
genapic_flat.c [PATCH] x86-64: Put more than one cpu in TARGET_CPUS 2006-10-21 18:37:02 +02:00
head.S [PATCH] x86-64: x86_64 - Fix FS/GS registers for VT execution 2007-02-13 13:26:24 +01:00
head64.c [PATCH] Dynamic kernel command-line: fixups 2007-02-12 09:48:39 -08:00
hpet.c [PATCH] time: x86_64: re-enable vsyscall support for x86_64 2007-02-16 08:14:00 -08:00
i387.c [PATCH] x86-64: use BUILD_BUG_ON in FPU code 2006-12-07 02:14:01 +01:00
i8259.c [PATCH] x86_64 irq: Safely cleanup an irq after moving it. 2007-02-26 10:34:08 -08:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
io_apic.c [PATCH] x86_64 irq: Safely cleanup an irq after moving it. 2007-02-26 10:34:08 -08:00
ioport.c [PATCH] x86-64: Use constant instead of raw number in x86_64 ioperm.c 2007-02-13 13:26:22 +01:00
irq.c [PATCH] x86-64: survive having no irq mapping for a vector 2007-02-13 13:26:25 +01:00
k8.c [PATCH] x86_64: Clean and enhance up K8 northbridge access code 2006-06-26 10:48:15 -07:00
kprobes.c [PATCH] kprobes: enable booster on the preemptible kernel 2006-12-07 08:39:38 -08:00
ldt.c
machine_kexec.c [PATCH] Avoid overwriting the current pgd (V4, x86_64) 2006-09-26 10:52:38 +02:00
Makefile [PATCH] time: x86_64: split x86_64/kernel/time.c up 2007-02-16 08:14:00 -08:00
mce.c [PATCH] x86-64: Allow to run a program when a machine check event is detected 2007-02-13 13:26:23 +01:00
mce_amd.c [PATCH] x86-64: Allow to run a program when a machine check event is detected 2007-02-13 13:26:23 +01:00
mce_intel.c [PATCH] x86: Add a cumulative thermal throttle event counter. 2006-09-26 10:52:42 +02:00
module.c [PATCH] Generic BUG for x86-64 2006-12-08 08:28:39 -08:00
mpparse.c ACPICA: use new ACPI headers. 2007-02-02 21:14:28 -05:00
nmi.c [PATCH] x86: Enable NMI watchdog for AMD Family 0x10 CPUs 2007-02-13 13:26:25 +01:00
pci-calgary.c [PATCH] x86-64: robustify bad_dma_address handling 2007-02-13 13:26:24 +01:00
pci-dma.c [PATCH] x86-64: improved iommu documentation 2007-02-13 13:26:21 +01:00
pci-gart.c [PATCH] x86-64: Fix off by one error in IOMMU boundary checking 2007-02-13 13:26:24 +01:00
pci-nommu.c [PATCH] remove superflous BUG_ON's in nommu and gart 2006-09-26 10:52:32 +02:00
pci-swiotlb.c [IA64] swiotlb cleanup 2007-02-05 18:51:25 -08:00
pmtimer.c [PATCH] time: x86_64: convert x86_64 to use GENERIC_TIME 2007-02-16 08:14:00 -08:00
process.c [PATCH] sched: fix bad missed wakeups in the i386, x86_64, ia64, ACPI and APM idle code 2006-12-22 08:55:51 -08:00
ptrace.c [PATCH] x86-64: Check return value of putreg in PTRACE_SETREGS 2007-02-13 13:26:24 +01:00
reboot.c [PATCH] x86_64: Move export symbols to their C functions 2006-06-26 10:48:22 -07:00
relocate_kernel.S [PATCH] Avoid overwriting the current pgd (V4, x86_64) 2006-09-26 10:52:38 +02:00
setup.c [PATCH] x86: Unify pcspeaker platform device code between i386/x86-64 2007-02-13 13:26:26 +01:00
setup64.c [PATCH] x86-64: Unexport __supported_pte_mask 2007-02-13 13:26:24 +01:00
signal.c [PATCH] Remove all traces of signal number conversion 2006-09-26 10:52:41 +02:00
smp.c Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-12-07 08:59:11 -08:00
smpboot.c [PATCH] time: x86_64: convert x86_64 to use GENERIC_TIME 2007-02-16 08:14:00 -08:00
stacktrace.c [PATCH] x86-64: do not always end the stack trace with ULONG_MAX 2007-02-13 13:26:21 +01:00
suspend.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
suspend_asm.S [PATCH] Change the name of pagedir_nosave 2006-09-26 08:49:01 -07:00
sys_x86_64.c [PATCH] namespaces: utsname: switch to using uts namespaces 2006-10-02 07:57:21 -07:00
syscall.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tce.c Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
time.c Replace remaining references to "driverfs" with "sysfs". 2007-02-17 19:13:42 +01:00
trampoline.S [PATCH] Fix gdt table size in trampoline.S 2006-09-26 10:52:32 +02:00
traps.c [PATCH] x86_64: Fix dump_trace() 2007-01-03 08:49:59 -08:00
tsc.c [PATCH] time: x86_64: re-enable vsyscall support for x86_64 2007-02-16 08:14:00 -08:00
tsc_sync.c [PATCH] x86: rewrite SMP TSC sync code 2007-02-16 08:13:57 -08:00
vmlinux.lds.S [PATCH] time: x86_64: re-enable vsyscall support for x86_64 2007-02-16 08:14:00 -08:00
vsmp.c [PATCH] Fix build breakage with CONFIG_X86_VSMP 2006-10-12 12:25:27 -07:00
vsyscall.c [PATCH] time: x86_64: re-enable vsyscall support for x86_64 2007-02-16 08:14:00 -08:00
x8664_ksyms.c [PATCH] x86-64: Remove fastcall references in x86_64 code 2007-02-13 13:26:22 +01:00