- 22 Jul, 2007 40 commits
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David Rientjes authored
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>
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Yinghai Lu authored
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:
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Robert P. J. Day authored
Signed-off-by:
Robert P. J. Day <rpjday@mindspring.com> Signed-off-by:
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Andreas Mohr authored
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:
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Andrew Morton authored
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:
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Yinghai Lu authored
This function is called via dma_ops->.., so change it to static Signed-off-by:
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Yinghai Lu authored
Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Jiri Kosina authored
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:
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Dan Aloni authored
Signed-off-by:
Dan Aloni <da-x@monatomic.org> Signed-off-by:
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Alessio Igor Bogani authored
Signed-off-by:
Alessio Igor Bogani <abogani@texware.it> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by:
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Thomas Gleixner authored
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:
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Will Schmidt authored
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:
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Glauber de Oliveira Costa authored
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:
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Andy Whitcroft authored
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:
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Jesper Juhl authored
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:
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William Lee Irwin III authored
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:
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Thomas Gleixner authored
Some systems have a HPET which is not incrementing, which leads to a complete hang. Detect it during HPET setup. Signed-off-by:
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James Jarvis authored
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:
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Rafael J. Wysocki authored
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:
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Sam Ravnborg authored
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:
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Adrian Bunk authored
pgd_{c,d}tor() can now become static. Signed-off-by:Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Muli Ben-Yehuda authored
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:
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Yinghai Lu authored
there function are called via dma_ops->.., so change them to static Signed-off-by:
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Muli Ben-Yehuda authored
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:
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Muli Ben-Yehuda authored
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:
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Muli Ben-Yehuda authored
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Muli Ben-Yehuda authored
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Muli Ben-Yehuda authored
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Guillaume Thouvenin authored
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:
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Muli Ben-Yehuda authored
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:
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Muli Ben-Yehuda authored
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Muli Ben-Yehuda authored
Provide seperate versions for Calgary and CalIOC2 Also print out the PCIe Root Complex Status on CalIOC2 errors Signed-off-by:
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Muli Ben-Yehuda authored
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Muli Ben-Yehuda authored
[akpm@linux-foundation.org>: make calioc2_chip_ops static] Signed-off-by:
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Muli Ben-Yehuda authored
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:
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Muli Ben-Yehuda authored
... in preparation for doing it differently for CalIOC2. Signed-off-by:
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Muli Ben-Yehuda authored
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:
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Muli Ben-Yehuda authored
Move the aic94xx split completion timeout handling there. Signed-off-by:
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Muli Ben-Yehuda authored
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Muli Ben-Yehuda authored
... will be used by CalIOC2 later Signed-off-by:
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