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* [SPARC64]: Add CONFIG_DEBUG_PAGEALLOC support.David S. Miller2005-09-25
| | | | | | | | | | | | | | | | | | | | | | The trick is that we do the kernel linear mapping TLB miss starting with an instruction sequence like this: ba,pt %xcc, kvmap_load xor %g2, %g4, %g5 succeeded by an instruction sequence which performs a full page table walk starting at swapper_pg_dir. We first take over the trap table from the firmware. Then, using this constant PTE generation for the linear mapping area above, we build the kernel page tables for the linear mapping. After this is setup, we patch that branch above into a "nop", which will cause TLB misses to fall through to the full page table walk. With this, the page unmapping for CONFIG_DEBUG_PAGEALLOC is trivial. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix mask formation in tomatillo_wsync_handler()David S. Miller2005-09-25
| | | | | | "1" needs to be "1UL", this is a 64-bit mask we're creating. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Mark functions called by paging_init() as __init.David S. Miller2005-09-23
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill unused variable in setup_arch()David S. Miller2005-09-23
| | | | | | 'highest_paddr' is set, but never actually used. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Fix comment typo in head.SDavid S. Miller2005-09-22
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Rewrite bootup sequence.David S. Miller2005-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of all of this cpu-specific code to remap the kernel to the correct location, use portable firmware calls to do this instead. What we do now is the following in position independant assembler: chosen_node = prom_finddevice("/chosen"); prom_mmu_ihandle_cache = prom_getint(chosen_node, "mmu"); vaddr = 4MB_ALIGN(current_text_addr()); prom_translate(vaddr, &paddr_high, &paddr_low, &mode); prom_boot_mapping_mode = mode; prom_boot_mapping_phys_high = paddr_high; prom_boot_mapping_phys_low = paddr_low; prom_map(-1, 8 * 1024 * 1024, KERNBASE, paddr_low); and that replaces the massive amount of by-hand TLB probing and programming we used to do here. The new code should also handle properly the case where the kernel is mapped at the correct address already (think: future kexec support). Consequently, the bulk of remap_kernel() dies as does the entirety of arch/sparc64/prom/map.S We try to share some strings in the PROM library with the ones used at bootup, and while we're here mark input strings to oplib.h routines with "const" when appropriate. There are many more simplifications now possible. For one thing, we can consolidate the two copies we now have of a lot of cpu setup code sitting in head.S and trampoline.S. This is a significant step towards CONFIG_DEBUG_PAGEALLOC support. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill readjust_prom_translations()David S. Miller2005-09-22
| | | | | | | Testing shows that the prom_unmap() calls do absolutely nothing. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Remove unnecessary paging_init() cruft.David S. Miller2005-09-22
| | | | | | | | | | | | | | | Because we don't access the PAGE_OFFSET linear mappings any longer before we take over the trap table from the firmware, we don't need to load dummy mappings there into the TLB and we don't need the bootmap_base hack any longer either. While we are here, check for a larger than 8MB kernel and halt the boot with an error message. We know that doesn't work, so instead of failing mysteriously we should let the user know exactly what's wrong. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Do not allocate OBP page tables using bootmemDavid S. Miller2005-09-22
| | | | | | | | | | | | | Just allocate them physically starting from the end of the kernel image. This incredibly simplifies our MM bootstrap in that we don't need any mappings in the linear PAGE_OFFSET area working in order to bootstrap ourselves and take over the trap table from the firmware. Many further simplifications are possible now, and this also sets the stage for CONFIG_DEBUG_PAGEALLOC support. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Break up inherit_prom_mappings() into it's constituent parts.David S. Miller2005-09-22
| | | | | | This thing was just a huge monolithic mess, so chop it up. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Do not allocate prom translations using bootmem.David S. Miller2005-09-22
| | | | | | Use __initdata instead. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Remove ktlb.S instruction patching.David S. Miller2005-09-22
| | | | | | | | | | | | | | This was kind of ugly, and actually buggy. The bug was that we didn't handle a machine with memory starting > 4GB. If the 'prompmd' was allocated in physical memory > 4GB we'd croak because the obp_iaddr_patch and obp_daddr_patch things only supported a 32-bit physical address. So fix this by just loading the appropriate values from two variables in the kernel image, which is locked into the TLB and thus accesses to them can't cause a recursive TLB miss. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Kill SZ_BITS define from dtlb_backend.SDavid S. Miller2005-09-21
| | | | | | | This is just a replica of the existing _PAGE_SZBITS, and thus unnecessary. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Move kernel TLB miss handling into a seperate file.David S. Miller2005-09-21
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] uml: fix compile warning after consolidation patchPaolo 'Blaisorblade' Giarrusso2005-09-21
| | | | | | | | | | | | | | The header declaring this function wasn't included, so the function declaration was totally bogus wrt. the proto - even if this wasn't going to fail at all. It was so bad that the compile warning I got was "control reaches end of non-void function", i.e. missing return. Actually, this has been there for ages, the consolidation patch just added the warning which was needed to clean it up. Nice. Really. Cc: Allan Graves <allan.graves@gmail.com> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: comment about cast build fixPaolo 'Blaisorblade' Giarrusso2005-09-21
| | | | | | | | | | Explain why the casting we do to silence this warning is indeed safe. It is because the field we're casting from, though being 64-bit wide, was filled with a pointer in first place by ourselves. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: readd removed unistd.h inclusionPaolo 'Blaisorblade' Giarrusso2005-09-21
| | | | | | | | Readd this header (deleted in 60d339f6fe0831060600c62418b71a62ad26c281). A warning is spit out here about undeclared getpgrp(). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix bogus HOST_ELF_CLASS symbol namePaolo 'Blaisorblade' Giarrusso2005-09-21
| | | | | | | | | | | | | | | | Even if with a bit of misunderstanding, Al fixed this in commit 95608261dae863bc43292e6fbd946a3abd3aa49f. Well, the symbol was intended to come from userspace (it exists there on normal host), but since some hosts may miss that, using the kernel one is just as fine. However, rename it to be named consistently with the rest. Actually, he missed converting ELFCLASS32 to coming from kernel headers. For consistence, add ELFCLASS64 too. Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: Fix conflict between libc and ipv6Paolo 'Blaisorblade' Giarrusso2005-09-21
| | | | | | | | gcc is now complaining during link on some hosts - fix it as for other things. Reported by Antoine Martin <antoine@nagafix.co.uk>. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix uname output on 32-bit binary on 64-bit hostPaolo 'Blaisorblade' Giarrusso2005-09-21
| | | | | | | Translate uname output taken from the host if needed. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix modify_ldt - missing break in switchPaolo 'Blaisorblade' Giarrusso2005-09-21
| | | | | | | | | | | | | I am a lamer :-(. Luckily, Luo Xin performed LTP testing and found this failure. Btw, the fact that the patch in which I introduced this was merged shows that: a) I'm really trusted by people b) sometimes they're wrong about point a). c) lack of time for reviewers. CC: Luo Xin <luothing@sina.com> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: remove verify_area_{tt,skas}Paolo 'Blaisorblade' Giarrusso2005-09-21
| | | | | | | When removing verify_area, verify_area_{tt,skas} were forgotten. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-09-21
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| * [ARM] 2932/1: Avoid the "noreturn" warning in arch/arm/kernel/traps.cCatalin Marinas2005-09-21
| | | | | | | | | | | | | | | | | | | | Patch from Catalin Marinas This patch prevents the "noreturn function does return" warning in the __bug() function in arch/arm/kernel/traps.c Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] Prevent deadlock in page fault handlerRussell King2005-09-20
| | | | | | | | | | | | | | | | As per x86, we may deadlock while trying to get the mmap semaphore. Implement the same fix, which allows (eg) recursive faults to cause an oops instead of deadlocking. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 2928/1: S3C2410 - make machine init code staticBen Dooks2005-09-20
| | | | | | | | | | | | | | | | | | Patch from Ben Dooks This code is not being exported, declare it static Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 2927/1: .arch.info - postfix section with .init for `make buildcheck`Ben Dooks2005-09-20
| | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks The `make buildcheck` is erroneously reporting that the .arch.info list is referencing items in the .init section as it is not itself postfixed with .init Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 2926/1: .proc.info - postfix section with .init for `make buildcheck`Ben Dooks2005-09-20
| | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks The `make buildcheck` is erroneously reporting that the .proc.info list is referencing items in the .init section as it is not itself postfixed with .init Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 2925/3: earlyparam - postfix section with .init for `make buildcheck`Ben Dooks2005-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks The `make buildcheck` is erroneously reporting that the earlyparam list is referencing items in the .init section as it is not itself postfixed with .init Also, as per rmk's suggestion, rename the __early_param to .early_param to bring it into line with everything else Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 2922/1: compile fix for sharkVincent Sanders2005-09-20
| | | | | | | | | | | | | | | | | | Patch from Vincent Sanders Shark platform fails to build with gcc 4 because of a bad lvalue assignement Signed-off-by: Vincent Sanders <vince@arm.linux.org.uk> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 2924/3: taglist - postfix section with .init for `make buildcheck`Ben Dooks2005-09-20
| | | | | | | | | | | | | | | | | | | | | | Patch from Ben Dooks The `make buildcheck` is erroneously reporting that the taglist is referencing items in the .init section as it is not itself postfixed with .init Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] update URL for HPET spec.Randy Dunlap2005-09-21
| | | | | | | | | | | | | | | | | | Correct URL for HPET spec. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ppc64: Build zImage.vmode for G5Benjamin Herrenschmidt2005-09-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | zImage.vmode was recently added. It's a version of zImage in which the ELF note section used by open firmware indicates that it requires a virtual mode instance of OF instead of real mode. This allows it to work with Apple OF, and thus is directly bootable (or netbootable) from OF command line. (Unfortunately, pSeries OF sort-of requires real mode and Apple OF sort-of requires virtual mode, and both tend to be unhappy if no notes section specifies the mode at all). However, we forgot to add zImage.vmode to the default G5 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 issue with non zero boot cpuAnton Blanchard2005-09-21
| | | | | | | | | | | | | | | | | | | | | | | | The new version of the flattened device tree passes the boot cpuid in the header instead of via a linux,boot-cpu property. We need to update the in kernel OF parsing code to do this, otherwise machines with a non zero boot cpuid fail to come up. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] PPC64: Fix boot for some pre-POWER4 systemsOlof Johansson2005-09-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some RS64 systems (such as F80) have non-python host bridges with EADS. However, they have two EADS with 4 buses each under them, so the old logic that assumed no more than 7 busses per PHB failed miserably. Big thanks to Olaf Hering for helping me test this, he's got one of the few machines that broke from the previous logic. Also, to be a bit smarter at detecting the need for a PHB-level IOMMU table by checking for the presence of an ISA bus. Only PHBs with ISA bridges should need the PHB-level table. Signed-off-by: Olof Johansson <olof@lixom.net> Cc: Anton Blanchard <anton@samba.org> 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] ppc64: Fix PCI flags when using OF device treePaul Mackerras2005-09-21
| | | | | | | | | | | | | | | | | | | | | | My code to set up the PCI tree from the Open Firmware device tree was setting IORESOURCE_* flags on the resources for the devices, but not the PCI_BASE_ADDRESS_* flags. This meant that some drivers misbehaved, and /proc/pci showed the wrong types for the resources. This fixes it. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [SPARC64]: Verify vmalloc TLB misses more strictly.David S. Miller2005-09-20
| | | | | | | | | | | | | | Arrange the modules, OBP, and vmalloc areas such that a range verification can be done quite minimally. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SPARC64]: Move DCACHE_ALIASING_POSSIBLE define to asm/page.hDavid S. Miller2005-09-19
| | | | | | | | | | | | | | | | This showed that arch/sparc64/kernel/ptrace.c was not getting the define properly, and thus the code protected by this ifdef was never actually compiled before. So fix that too. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SPARC64]: Handle little-endian unaligned loads/stores correctly.David S. Miller2005-09-19
|/ | | | | | | | | | | | | | | | | Because we use byte loads/stores to cons up the value in and out of registers, we can't expect the ASI endianness setting to take care of this for us. So do it by hand. This case is triggered by drivers/block/aoe/aoecmd.c in the ataid_complete() function where it goes: /* word 100: number lba48 sectors */ ssize = le64_to_cpup((__le64 *) &id[100<<1]); This &id[100<<1] address is 4 byte, rather than 8 byte aligned, thus triggering the unaligned exception. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Alpha: ISA IRQs fixup for dp264Ivan Kokshaysky2005-09-19
| | | | | | | | | | | | | | | Basically, this extends original dp264 fixup to all dp264 variations. Here is one minor change: mask out bits 4-7 of a value assigned by SRM, because - newer consoles report ISA IRQs with offset 0xe0; - even if console IRQ value is bogus, we'll have a value < 16 so it should be harmless as it won't clash with native IRQs. Particularly this fixes USB interrupt problem on xp1000 and es40. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [ARM] Fix warning in arch/arm/mach-sa1100/generic.cRussell King2005-09-18
| | | | | | | | | | Fix: arch/arm/mach-sa1100/generic.c:224: warning: 'struct mcp_plat_data' declared inside parameter list caused by mussing structure and function declaration. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] Fix warning in arch/arm/kernel/semaphore.cRussell King2005-09-18
| | | | | | | | | Newer binutils complains: /tmp/cc07pbI9.s:146: Warning: ignoring changed section type for .sched.text Fix this warning by adding %progbits to the .section. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [ARM] 2917/1: Make IXP4xx mach_desc's depend on config optionsDeepak Saxena2005-09-18
| | | | | | | | | | | | | | | | | Patch from Deepak Saxena Building a kernel for IXDP425 currently includes the machine descriptors for IXDP465 and PRPMC1100 even if those machines are not configured. This means we can build a kernel that boots on those machines even though the machine_is_xxx() macro will always return 0 and other bits such as PCI won't be compiled in. This can lead to many wasted hours wondering what you have done to your kernel to make it randomly crash thus requireing large quantities of beer to be consumed. While I am all for consumption of large quantities of beer, there are better reasons to do so then stupid kernel bugs. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* x86-64/smp: fix random SIGSEGV issuesLinus Torvalds2005-09-17
| | | | | | | | | | | | They seem to have been due to AMD errata 63/122; the fix is to disable TLB flush filtering in SMP configurations. Confirmed to fix the problem by Andrew Walrond <andrew@walrond.org> [ Let's see if we'll have a better fix eventually, this is the Q&D "let's get this fixed and out there" version ] Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] files: fix preemption issuesDipankar Sarma2005-09-17
| | | | | | | | | | With the new fdtable locking rules, you have to protect fdtable with either ->file_lock or rcu_read_lock/unlock(). There are some places where we aren't doing either. This patch fixes those places. Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: UML/i386 cmpxchg fixJeff Dike2005-09-17
| | | | | | | | Using native cmpxchg offers a slight performance improvement in uml/i386. Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc32: Add ppc_sys descriptions for PowerQUICC I devicesVitaly Bordug2005-09-17
| | | | | | | | | | | | | | Added ppc_sys device and system definitions for PowerQUICC I devices. This will allow drivers for PQI to be proper platform device drivers. Currently sys section contains only MPC885 and MPC866. Identification should be done with identify_ppc_sys_by_name call, with board-specific "name" string passed, since PQI do not have any register that could identify the SOC. Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: build fixAnton Blanchard2005-09-17
| | | | | | | | | I forgot to include siginfo.h when I added data breakpoint support. We must include it in a round-a-bout way in mainline. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: e820.c needs module.hAndrew Morton2005-09-17
| | | | | | | | For EXPORT_SYMBOL. Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix up some pm_message_t typesRichard Purdie2005-09-17
| | | | | | | | Fix up some pm_message_t types Signed-Off-By: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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