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2007-07-21x86_64: arch/x86_64/kernel/aperture.c lower printk severityDan Aloni
Users that use kernel log filtering (e.g. via syslogd or a proprietry method) wouldn't like to see warning prints that are not really warnings. Signed-off-by: Dan Aloni <da-x@monatomic.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: fix iounmap's use of vm_struct's size fieldJeremy Fitzhardinge
get_vm_area always returns an area with an adjacent guard page. That guard page is included in vm_struct.size. iounmap uses vm_struct.size to determine how much address space needs to have change_page_attr applied to it, which will BUG if applied to the guard page. This patch adds a helper function - get_vm_area_size() in linux/vmalloc.h - to return the actual size of a vm area, and uses it to make iounmap do the right thing. There are probably other places which should be using get_vm_area_size(). Thanks to Dave Young <hidave.darkstar@gmail.com> for debugging the problem. [ Andi, it wasn't clear to me whether x86_64 needs the same fix. ] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Dave Young <hidave.darkstar@gmail.com> Cc: Chuck Ebbert <cebbert@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: move PIT function declarations and constants to correct header fileThomas Gleixner
setup_pit_timer is declared in asm-i386/timer.h. Move it to the pit header file, so it can be used by x86_64 as well. Move also the PIT constants. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: hpet assumes boot cpu is 0Chris Wright
I fixed this in x86_64. Looks like the kind of thing that will break voyager on i386. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: remove volatile in apic.cThomas Gleixner
Remove the volatile in apic. We have a cpu_relax() in the wait loop. Fix a coding style issue while at it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: move iommu declaration from proto to iommu.hYinghai Lu
[akpm@linux-foundation.org: build fix] Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: disable srat when numa emulation succeedsDavid Rientjes
When NUMA emulation succeeds, acpi_numa needs to be set to -1 so that srat_disabled() will always return true. We won't be calling acpi_scan_nodes() or registering the true nodes we've found. [hugh@veritas.com: Fix x86_64 CONFIG_NUMA_EMU build: acpi_numa needs CONFIG_ACPI_NUMA] Signed-off-by: David Rientjes <rientjes@google.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: fix e820_hole_size based on address rangesDavid Rientjes
e820_hole_size() now uses the newly extracted helper function, e820_find_active_region(), to determine the size of usable RAM in a range of PFN's. This was previously broken because of two reasons: - The start and end PFN's of each e820 entry were not properly rounded prior to excluding those entries in the range, and - Entries smaller than a page were not properly excluded from being accumulated. This resulted in emulated nodes being incorrectly mapped to ranges that were completely reserved and not candidates for being registered as active ranges. Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: disable the GART in shutdownYinghai Lu
For K8 system: 4G RAM with memory hole remapping enabled, or more than 4G RAM installed. when using kexec to load second kernel. In the second kernel, when mem is allocated for GART, it will do the memset for clear, it will cause restart, because some device still used that for dma. solution will be: in second kernel: disable that at first before we try to allocate mem for it. or in the first kernel: do disable that before shutdown. Andi/Eric/Alan prefer to second one for clean shutdown in first kernel. Andi also point out need to consider to AGP enable but mem less 4G case too. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: replace hard-coded constant with appropriate macro from kernel.hRobert P. J. Day
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: add cpu_relax() to cmos_lock()Andreas Mohr
Add cpu_relax() to cmos_lock() inline function for faster operation on SMT CPUs and less power consumption on others in case of lock contention (which probably doesn't happen too often, so admittedly this patch is not too exciting). [akpm@linux-foundation.org: Include the header file for cpu_relax()] Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: flush_tlb_kernel_range() warning fixAndrew Morton
mm/vmalloc.c: In function 'unmap_kernel_range': mm/vmalloc.c:75: warning: unused variable 'start' make it a C function so that the compiler thinks it used its arguments. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: change _map_single to static in pci_gart.c etcYinghai Lu
This function is called via dma_ops->.., so change it to static Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: Geode HW Random Number Generator depends on X86_32Yinghai Lu
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: fix wrong comment regarding set_fixmap()Jiri Kosina
The function name is set_fixmap(), not fixmap_set() as stated in the comment. Also fix a typo, punctuation and lower/uppercase a bit. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: lower printk severityDan Aloni
Signed-off-by: Dan Aloni <da-x@monatomic.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: fix typo in acpi_pm.cAlessio Igor Bogani
Signed-off-by: Alessio Igor Bogani <abogani@texware.it> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: use the global PIT lockThomas Gleixner
Replace the pcspkr private PIT lock by the global PIT lock to serialize the PIT access all over the place. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: During VM oom condition, kill all threads in process groupWill Schmidt
During a VM oom condition, kill all threads in the process group. We have had complaints where a threaded application is left in a bad state after one of it's threads is killed when we hit a VM: out_of_memory condition. Killing just one of the process threads can leave the application in a bad state, whereas killing the entire process group would allow for the application to restart, or otherwise handled, and makes it very obvious that something has gone wrong. This change allows the entire process group to be taken down, rather than just the one thread. Signed-off-by: Will <will_schmidt@vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: Move functions declarations to header fileGlauber de Oliveira Costa
Some interrupt entry points are currently defined in i8259.c They probably belong in a header. Right now, their only user is init_IRQ, justifying their declaration in-file. But when virtualization comes in, we may be interested in using that functions in late initializations. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: move the kernel to 16MB for NUMA-QAndy Whitcroft
We are seeing corruption of the decompressed kernel. It is suspected that this is platform specific as it has yet to be seen on any other x86. Move the kernel to the 16MB boundary. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: Remove unneeded test of 'task' in dump_trace()Jesper Juhl
Remove unneeded test of task != NULL from arch/i386/kernel/traps.c::dump_trace() At the start of the function we have this test: if (!task) task = current; so further down there's no need to test 'task'. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: divorce CONFIG_X86_PAE from CONFIG_HIGHMEM64GWilliam Lee Irwin III
PAE is useful for more than supporting more than 4GB RAM. It supports expanded swapspace and NX executable protections. Some users may want NX or expanded swapspace support without the overhead or instability of highmem. For these reasons, the following patch divorces CONFIG_X86_PAE from CONFIG_HIGHMEM64G. Cc: Mark Lord <lkml@rtr.ca> Signed-off-by: William Irwin <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: HPET, check if the counter worksThomas Gleixner
Some systems have a HPET which is not incrementing, which leads to a complete hang. Detect it during HPET setup. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: DMI_MATCH patch in reboot.c for SFF Dell OptiPlex 745 - fixes hang on ↵James Jarvis
reboot The following patch enables reboot through BIOS on the Dell Optiplex 745 Small Form Factor base, on which reboot hangs. The larger form factor does not require this, hence the match on DMI_BOARD_NAME. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: do not restore reserved memory after hibernationRafael J. Wysocki
On some systems the ACPI NVS area is located in the first 1 MB of RAM and it is overwritten by the i386 code during the restore after hibernation. This confuses the ACPI platform firmware that doesn't update the AC adapter status appropriately as a result (http://bugzilla.kernel.org/show_bug.cgi?id=7995). The solution is to register the reserved memory in the first 1 MB as 'nosave', so that swsusp doesn't touch it during the restore. Also, this has been done on x86_64 for a long time now, so this patch makes the i386 restore code behave like the x86_64 one. [akpm@linux-foundation.org: build fix] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: fix section mismatch warning in intel_cacheinfoSam Ravnborg
Fix following warning: WARNING: arch/i386/kernel/built-in.o(.init.text+0x3818): Section mismatch: reference to .exit.text:cache_remove_dev (between 'cacheinfo_cpu_callback' and 'cache_sysfs_init') It points out that a function marked __cpuexit is calling a function marked __cpuinit => oops. The call happens only in an error-condition which may explain why we have not seen it before. The offending function was not used anywhere else - so marked it __cpuexit. Note: This warning triggers only with a local copy of modpost but that version will soon be pushed out. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21i386: pgd_{c,d}tor() staticAdrian Bunk
pgd_{c,d}tor() can now become static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: Calgary - fold in redundant functionsMuli Ben-Yehuda
After the bitmap changes we can get rid of the unlocked versions of calgary_unmap_sg and iommu_free. Fold __calgary_unmap_sg and __iommu_free into their calgary_unmap_sg and iommu_free, respectively. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: Calgary - change _map_single, etc to staticYinghai Lu
there function are called via dma_ops->.., so change them to static Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: Calgary - tighten up the bitmap lockingMuli Ben-Yehuda
Currently the IOMMU table's lock protects both the bitmap and access to the hardware's TCE table. Access to the TCE table is synchronized through the bitmap; therefore, only hold the lock while modifying the bitmap. This gives a yummy 10-15% reduction in CPU utilization for netperf on a large SMP machine. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: Calgary - fix few style problems pointed out by checkpatch.plMuli Ben-Yehuda
No actual code was harmed in the production of this patch. Thanks to Andrew Morton <akpm@linux-foundation.org> for telling me about checkpatch.pl. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: tidy up debug printksMuli Ben-Yehuda
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: only reserve the first 1MB of IO space for CalIOC2Muli Ben-Yehuda
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: tabify and trim trailing whitespaceMuli Ben-Yehuda
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: cleanup of unneeded macrosGuillaume Thouvenin
Cleanup unneeded macros used for register space address calculation. Now we are using the EBDA to find the space address. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@bull.net> Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: reserve TCEs with the same address as MEM regionsMuli Ben-Yehuda
This works around a bug where DMAs that have the same addresses as some MEM regions do not go through. Not clear yet if this is due to a mis-configuration or something deeper. [akpm@linux-foundation.org: coding style fixlet] Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: grab PLSSR too when a DMA error occursMuli Ben-Yehuda
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: make dump_error_regs a chip opMuli Ben-Yehuda
Provide seperate versions for Calgary and CalIOC2 Also print out the PCIe Root Complex Status on CalIOC2 errors Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: implement CalIOC2 TCE cache flush sequenceMuli Ben-Yehuda
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: add chip_ops and a quirk function for CalIOC2Muli Ben-Yehuda
[akpm@linux-foundation.org>: make calioc2_chip_ops static] Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: introduce CalIOC2 supportMuli Ben-Yehuda
CalIOC2 is a PCI-e implementation of the Calgary logic. Most of the programming details are the same, but some differ, e.g., TCE cache flush. This patch introduces CalIOC2 support - detection and various support routines. It's not expected to work yet (but will with follow-on patches). Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: abstract how we find the iommu_table for a deviceMuli Ben-Yehuda
... in preparation for doing it differently for CalIOC2. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: introduce chipset specific opsMuli Ben-Yehuda
Calgary and CalIOC2 share most of the same logic. Introduce struct cal_chipset_ops for quirks and tce flush logic which are [akpm@linux-foundation.org: make calgary_chip_ops static] Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: introduce handle_quirks() for various chipset quirksMuli Ben-Yehuda
Move the aic94xx split completion timeout handling there. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: update copyright noticeMuli Ben-Yehuda
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: generalize calgary_increase_split_completion_timeoutMuli Ben-Yehuda
... will be used by CalIOC2 later Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86: remove support for the Rise CPUAdrian Bunk
The Rise CPUs were only very short-lived, and there are no reports of anyone both owning one and running Linux on it. Googling for the printk string "CPU: Rise iDragon" didn't find any dmesg available online. If it turns out that against all expectations there are actually users reverting this patch would be easy. This patch will make the kernel images smaller by a few bytes for all i386 users. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86_64: check remote IRR bit before migrating level triggered irqEric W. Biederman
On x86_64 kernel, level triggered irq migration gets initiated in the context of that interrupt(after executing the irq handler) and following steps are followed to do the irq migration. 1. mask IOAPIC RTE entry; // write to IOAPIC RTE 2. EOI; // processor EOI write 3. reprogram IOAPIC RTE entry // write to IOAPIC RTE with new destination and // and interrupt vector due to per cpu vector // allocation. 4. unmask IOAPIC RTE entry; // write to IOAPIC RTE Because of the per cpu vector allocation in x86_64 kernels, when the irq migrates to a different cpu, new vector(corresponding to the new cpu) will get allocated. An EOI write to local APIC has a side effect of generating an EOI write for level trigger interrupts (normally this is a broadcast to all IOAPICs). The EOI broadcast generated as a side effect of EOI write to processor may be delayed while the other IOAPIC writes (step 3 and 4) can go through. Normally, the EOI generated by local APIC for level trigger interrupt contains vector number. The IOAPIC will take this vector number and search the IOAPIC RTE entries for an entry with matching vector number and clear the remote IRR bit (indicate EOI). However, if the vector number is changed (as in step 3) the IOAPIC will not find the RTE entry when the EOI is received later. This will cause the remote IRR to get stuck causing the interrupt hang (no more interrupt from this RTE). Current x86_64 kernel assumes that remote IRR bit is cleared by the time IOAPIC RTE is reprogrammed. Fix this assumption by checking for remote IRR bit and if it still set, delay the irq migration to the next interrupt arrival event(hopefully, next time remote IRR bit will get cleared before the IOAPIC RTE is reprogrammed). Initial analysis and patch from Nanhai. Clean up patch from Suresh. Rewritten to be less intrusive, and to contain a big fat comment by Eric. [akpm@linux-foundation.org: fix comments] Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Nanhai Zou <nanhai.zou@intel.com> Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Asit Mallick <asit.k.mallick@intel.com> Cc: Keith Packard <keith.packard@intel.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-21x86: round_jiffies() for i386 and x86-64 non-critical/corrected MCE pollingVenki Pallipadi
This helps to reduce the frequency at which the CPU must be taken out of a lower-power state. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Acked-by: Tim Hockin <thockin@hockin.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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