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* [PATCH] cris: printk() duplicate declarationArthur Othieno2005-11-07
| | | | | | | | | | printk() already declared in include/linux/kernel.h so squish the duplication. Besides, no printk() usage here. Bye bye. Signed-off-by: Arthur Othieno <a.othieno@bluewin.ch> Cc: Mikael Starvik <starvik@axis.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86: add MCE resumeShaohua Li2005-11-07
| | | | | | | | | | It's widely seen a MCE non-fatal error reported after resume. It seems MCE resume is lacked under ia32. This patch tries to fix the gap. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] swsusp: remove unused variablePavel Machek2005-11-07
| | | | | | | | | Remove unused variable, and make code less evil that way. Fix whitespace around for-loop-like macro. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] swsusp cleanupsPavel Machek2005-11-07
| | | | | | | | | This cleans spaces between * and pointer up, and adds "int" in "unsigned int". Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] suspend-to-ram: update docsPavel Machek2005-11-07
| | | | | | | | This adds few more working systems. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cpu hoptlug: avoid usage of smp_processor_id() in preemptible codeHeiko Carstens2005-11-07
| | | | | | | | | | | | | | | | | | | | Replace smp_processor_id() with any_online_cpu(cpu_online_map) in order to avoid lots of "BUG: using smp_processor_id() in preemptible [00000001] code:..." messages in case taking a cpu online fails. All the traces start at the last notifier_call_chain(...) in kernel/cpu.c. Since we hold the cpu_control semaphore it shouldn't be any problem to access cpu_online_map. The reason why cpu_up failed is simply that the cpu that was supposed to be taken online wasn't even there. That is because on s390 we never know when a new cpu comes and therefore cpu_possible_map consists of only ones and doesn't reflect reality. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] arch/i386/kernel/scx200.c should #include <linux/scx200_gpio.h>Adrian Bunk2005-11-07
| | | | | | | | | Every file should #include the header files containing the prototypes of its global functions Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] arch/i386/kernel/reboot_fixups.c should #include <linux/reboot_fixups.h>Adrian Bunk2005-11-07
| | | | | | | | | Every file should #include the header files containing the prototypes of its global functions Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] arch/i386/kernel/ldt.c should #include <asm/mmu_context.h>Adrian Bunk2005-11-07
| | | | | | | | | Every file should #include the header files containing the prototypes of its global functions Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386: LVT entries remaining unmasked on rebootZwane Mwaikambo2005-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Excerpt from bugzilla entry http://bugzilla.kernel.org/show_bug.cgi?id=5518 "i386 version of Reboot-through-BIOS is unsafe: it forgets to mask APIC LVT interrupts before jumping to a BIOS entry point. As a result, BIOS ends up bombarded with interrupts early on boot. The BIOS does not expect it since following a "normal" hardware cpu reset, all APIC LVT registers have the Mask bit (16) set and can't generate interrupts. For example, the version of Phoenix BIOS used by VMware enables interrupts for the first time before masking/clearing APIC LVT. The APIC Timer LVT register is still set up for a timer interrupt delivery with a high vector from the previous Linux incarnation (0xef in our case). The BIOS has not fully initialized its IDT at this point and the real mode gate for 0xef remains all zeros. Vector 0xef dispatches BIOS to address 0:0, BIOS takes a #GP and eventually hangs. machine_shutdown() does attempt to shut down APIC before jumping to BIOS, but it is ineffective" Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk> Cc: "Seth, Rohit" <rohit.seth@intel.com> Cc: Zachary Amsden <zach@vmware.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] arch/i386: Use ARRAY_SIZE macroTobias Klauser2005-11-07
| | | | | | | | Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sh: Use pfn_valid() for lazy dcache write-back on SH7705Paul Mundt2005-11-07
| | | | | | | | | | | | | SH7705 in extended cache mode has some left-over VALID_PAGE() cruft that it checks when doing lazy dcache write-back. This has been gone for some time (the last bits were in the discontig code, which should now also be gone -- this also fixes up a build error in the non-discontig case). pfn_valid() gives the desired behaviour, so we switch to that. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sh: Drop hp690 discontig supportPaul Mundt2005-11-07
| | | | | | | | | | | | | | | | There was only one board using this (hp690 specifically), and it just so happens that it's only physically discontiguous at the "normal" P1 offset. If we bump up the P1 offset, it's possible to hit a shadowed region of memory where we suddenly become magically contiguous. As people have been using this shadowed region workaround for quite some time (and without any adverse effects), it's time to drop the left over discontig bits that no longer have any practical use (it was always very much hp690-centric to begin with). Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sh: pte_mkhuge() compile fix for !CONFIG_HUGETLB_PAGEPaul Mundt2005-11-07
| | | | | | | | | | | | Presently it is bogus to call pte_mkhuge() outside of the CONFIG_HUGETLB_PAGE context, as the only processors that support _PAGE_SZHUGE do so in the hugetlbpage context only (and this is the only time that _PAGE_SZHUGE is even defined). SH-2 and SH-3 do not support huge pages at all, and so it is not possible to enable this. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sh: SuperHyway support for SH4-202Paul Mundt2005-11-07
| | | | | | | | | | | This adds support for the relatively quirky (ie, not in line with any known documentation, and amazed it works at all) SuperHyway implementation on SH4-202. This depends on the earlier SuperHyway patch for multiple block support and VCR refactoring. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] superhyway: multiple block support and VCR reworkPaul Mundt2005-11-07
| | | | | | | | | | | | | | | | | This extends the API somewhat to allow for platform-specific VCR reading and writing. Some platforms (like SH4-202) implement the VCR in a split VCRL and VCRH, but end up being in reverse order or have other quirks that need to be dealt with, so we add a set of superhyway_ops per-bus to accomodate this. We also have to extend the per-device resources somewhat, as some devices now conveniently split control and data blocks. So we allow a platform to register its set of SuperHyway devices via superhyway_add_devices() with the control block always ordered as the first resource (as this is the one that userspace cares about). Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sh: Drop deprecated support for custom ramdisk embeddingPaul Mundt2005-11-07
| | | | | | | | | sh had its own support for embedding ramdisk images in to the kernel binary, but people are using initramfs for this now, so we drop the ramdisk embedding. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sh: Re-add sh to drivers/MakefilePaul Mundt2005-11-07
| | | | | | | | drivers/sh/ got dropped from drivers/Makefile, so add it back in.. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add CPM1 config optionPantelis Antoniou2005-11-07
| | | | | | | | | | Kconfig patch needed by fs_enet to work. Works like CONFIG_CPM2. Cc: Kumar <kumar.gala@freescale.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add missing initrd header on ppc440Matt Porter2005-11-07
| | | | | | | | | This missing initrd header slipped though last time. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Remove internal PCI arbiter check on PPC40xMatt Porter2005-11-07
| | | | | | | | | | | | On PPC405GP/GPR it should be possible to enable PCI support, even when the internal PCI arbiter is disabled (e.g. when using an external PCI arbiter). The removed code didn't allow this, and also generated a warning on PPC405EP platforms. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: cleanup AMCC PPC40x eval boards to support U-BootMatt Porter2005-11-07
| | | | | | | | | | | | | | Cleanup PPC40x eval boards (bubinga, walnut and sycamore) to support U-Boot as bootloader. The OpenBIOS bd_info struct is not used in the kernel anymore (only U-Boot now). uImage (U-Boot) tested on walnut, sycamore and bubinga zImage (OpenBIOS) tested on sycamore, bubinga and ebony Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add Yucca (440SPe eval board) platformRoland Dreier2005-11-07
| | | | | | | | | Add support for AMCC PowerPC 440SPe "Yucca" eval board platform. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add 440SPe supportRoland Dreier2005-11-07
| | | | | | | | | | Add support for the AMCC PowerPC 440SPe SoC, including PCI Express in root port mode. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Dump error status for both PLB segments on 440SPRoland Dreier2005-11-07
| | | | | | | | | | | | The PowerPC 440SP SoC has two Processor Local Bus (PLB) segments (a high-throughput segment and a low-latency segment). Fix our PLB register definitions to cope with this, and add code to dump the status of both segments when a machine check occurs. Signed-off-by: Roland Dreier <rolandd@cisco.com> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Allow ERPN for early serial to depend on CPU typeRoland Dreier2005-11-07
| | | | | | | | | | | | | The PowerPC 440SPe supports up to 16 GB of RAM, and therefore its IO registers are at 0x4_xxxx_xxxx instead of being at 0x1_xxxx_xxxx like most other PPC 440 chips. To allow for this, this patch moves the definition of the ERPN used for mapping UART0 from being hard-coded in the head_44x.S assembly code to being defined in ibm44x.h. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: add watchdog & RTC support for Marvell EV64360BP boardLee Nicks2005-11-07
| | | | | | | | This patch adds watchdog, RTC support for Marvell EV64360BP board. Signed-off-by: Lee Nicks <allinux@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: don't enable scatter/gather w/o checksum supportStephen Hemminger2005-11-07
| | | | | | | | | It is not valid to enable scatter/gather without hardware checksum support of some kind. (akpm: applies only to the old boomerang cards). Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: enable use of memory-mapped PCI I/OJohn W. Linville2005-11-07
| | | | | | | | | | | | | | Add capability for 3c59x driver to use memory-mapped PCI I/O resources. This may improve performance for those devices so equipped. This will be the default behaviour for IS_CYCLONE and IS_TORNADO devices. Additionally, it can be enabled/disabled individually for up to MAX_UNITS number of devices via the use_mmio module option or for all units via the global_use_mmio option. The use_mmio option overrides the global_use_mmio option for those devices specified. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: correct rx_dropped countingJohn W. Linville2005-11-07
| | | | | | | | | Only increment rx_dropped in case of lack of resources (i.e. not for frames with errors). Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: support ETHTOOL_GPERMADDRJohn W. Linville2005-11-07
| | | | | | | | Add support for ETHTOOL_GPERMADDR to 3c59x. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: fix some grammar in module parameter descriptionsJohn W. Linville2005-11-07
| | | | | | | | | | Correct several (apparently cut & paste) grammatical typos in module parameter descriptions. They seem to have originated as copies of the description for "global_options". Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: cleanup init of module parameter arraysJohn W. Linville2005-11-07
| | | | | | | | Beautify the array initilizations for the module parameters. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: bounds checking for hw_checksumsJohn W. Linville2005-11-07
| | | | | | | | Add bounds checking to usage of hw_checksums module parameter array. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: avoid blindly reading link status twiceTommy Christensen2005-11-07
| | | | | | | | | | | In order to spare some I/O operations, be more intelligent about when to read from the PHY. Pointed out by Bogdan Costescu. Signed-off-by: Tommy S. Christensen <tommy.christensen@tpack.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: cleanup of mdio_read routines to use MII_* macrosNeil Horman2005-11-07
| | | | | | | | | Clean up mdio_read routines in 3c59x.c to use the MII_* macros defined in include/linux/mii.h Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] 3c59x: convert to use of pci_iomap APIJohn W. Linville2005-11-07
| | | | | | | | | Convert 3c59x driver to use pci_iomap API. This makes it easier to enable the use of memory-mapped PCI I/O resources. Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: Use same schedule timeout for all cpus in cache_reapManfred Spraul2005-11-07
| | | | | | | | | | | | | | | Chen noticed that cache_reap uses REAPTIMEOUT_CPUC+smp_processor_id() as the timeout for rescheduling. The "+smp_processor_id()" part is wrong, the timeout should be identical for all cpus: start_cpu_timer already adds a cpu dependant offset to avoid any clustering. The attached patch removes smp_processor_id(). Signed-Off-By: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: rename kmem_cache_s to kmem_cachePekka J Enberg2005-11-07
| | | | | | | | | This patch renames struct kmem_cache_s to kmem_cache so we can start using it instead of kmem_cache_t typedef. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] slab: don't BUG on duplicated cacheAndrew Morton2005-11-07
| | | | | | | | | | | | | | | | | | | | | slab presently goes BUG if someone tries to register an already-registered cache. But this can happen if the user accidentally loads a module which is already statically linked into the kernel. Nuking the kernel is rather a harsh reaction. Change it into a warning, and just fail the kmem_cache_alloc() attempt. If the module is well-behaved, the modprobe will fail and all is well. Notes: - Swaps the ranking of cache_chain_sem and lock_cpu_hotplug(). Doesn't seem important. Acked-by: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] posix-timers `unlikely' rejigAndrew Morton2005-11-07
| | | | | | | !unlikely(expr) hurts my brain. likely(!expr) is more straightforward. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc: Fix ppc32 build after 64K pagesBenjamin Herrenschmidt2005-11-07
| | | | | | | | | Oops, some last minute changes caused the 64K pages patch to break ppc32 build, this fixes it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: Fix zImage bootBenjamin Herrenschmidt2005-11-07
| | | | | | | | | | | The zImage wrapper has a bug where it doesn't claim() the memory for the kernel properly, it forgets to take into account the offset between the ELF header and the kernel itself. This results on some machines, like G5s, into a kernel that crashes at boot when clearing the BSS. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Suppress split ptlock on arches which may use one page for multiple ↵Hugh Dickins2005-11-07
| | | | | | | | | | | page tables Suppress split ptlock on arches which may use one page for multiple page tables. Reconsider what better to do (particularly on ppc64) later on. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] POWERPC/PPC64: Fix CONFIG_SMP=n build for ppc64Olof Johansson2005-11-07
| | | | | | | | | | Two CONFIG_SMP=n build fixes due to missing <asm/smp.h> includes. Signed-off-by: Olof Johansson <olof@lixom.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ia64: re-implement dma_get_cache_alignment to avoid EXPORT_SYMBOLJohn W. Linville2005-11-07
| | | | | | | | | | | | | The current ia64 implementation of dma_get_cache_alignment does not work for modules because it relies on a symbol which is not exported. Direct access to a global is a little ugly anyway, so this patch re-implements dma_get_cache_alignment in a manner similar to what is currently used for x86_64. Signed-off-by: John W. Linville <linville@tuxdriver.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] typo correction for fix-build-on-nls-free-systemsYuri Vasilevski2005-11-07
| | | | | | | | | A typo fix for fix-build-on-nls-free-systems.patch that caused all systems to be detected as not having NLS. Signed-off-by: Yuri Vasilevski <yvasilev@duke.math.cinvestav.mx> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: Fix bug in SLB miss handler for hugepagesDavid Gibson2005-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch, however, should be applied on top of the 64k-page-size patch to fix some problems with hugepage (some pre-existing, another introduced by this patch). The patch fixes a bug in the SLB miss handler for hugepages on ppc64 introduced by the dynamic hugepage patch (commit id c594adad5653491813959277fb87a2fef54c4e05) due to a misunderstanding of the srd instruction's behaviour (mea culpa). The problem arises when a 64-bit process maps some hugepages in the low 4GB of the address space (unusual). In this case, as well as the 256M segment in question being marked for hugepages, other segments at 32G intervals will be incorrectly marked for hugepages. In the process, this patch tweaks the semantics of the hugepage bitmaps to be more sensible. Previously, an address below 4G was marked for hugepages if the appropriate segment bit in the "low areas" bitmask was set *or* if the low bit in the "high areas" bitmap was set (which would mark all addresses below 1TB for hugepage). With this patch, any given address is governed by a single bitmap. Addresses below 4GB are marked for hugepage if and only if their bit is set in the "low areas" bitmap (256M granularity). Addresses between 4GB and 1TB are marked for hugepage iff the low bit in the "high areas" bitmap is set. Higher addresses are marked for hugepage iff their bit in the "high areas" bitmap is set (1TB granularity). To avoid conflicts, this patch must be applied on top of BenH's pending patch for 64k base page size [0]. As such, this patch also addresses a hugepage problem introduced by that patch. That patch allows hugepages of 1MB in size on hardware which supports it, however, that won't work when using 4k pages (4 level pagetable), because in that case hugepage PTEs are stored at the PMD level, and each PMD entry maps 2MB. This patch simply disallows hugepages in that case (we can do something cleverer to re-enable them some other day). Built, booted, and a handful of hugepage related tests passed on POWER5 LPAR (both ARCH=powerpc and ARCH=ppc64). [0] http://gate.crashing.org/~benh/ppc64-64k-pages.diff Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds2005-11-06
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| * kconfig: fix xconfig on fedora 2 & 3 (x86_64)Sam Ravnborg2005-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Than Ngo <than@redhat.com> qt as installed on fedora core (2 and 3) does not work with vanilla kernel. The linker fails to locate the qt lib: Actual Results: # make xconfig HOSTLD scripts/kconfig/qconf /usr/bin/ld: cannot find -lqt collect2: ld returned 1 exit status Than Ngo has provided following fix for the bug. Cc: Than Ngo <than@redhat.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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