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* x86, VisWS: turn into generic arch, add NR_IRQS quirkIngo Molnar2008-07-101-2/+2
| | | | | | | | | NR_IRQS: let VISWS be just a sub-case of the generic code. This can create a somewhat larger irq_desc[] array if NR_CPUS is high but that should not worry VisWS which has 4 CPUs at most. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, eliminate ↵Ingo Molnar2008-07-101-3/+1
| | | | | | | | include/asm-x86/mach-visws/setup_arch.h use the generic version of setup_arch.h - it's the same. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, move definitionsIngo Molnar2008-07-102-3/+5
| | | | | | | | move the SGIVW definitions from setup_arch.h into its own header file. preparation for turning VISWS into a generic PC architecture. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, create include/asm-x86/visws/Ingo Molnar2008-07-103-0/+0
| | | | | | | | | | move the include/asm-x86/mach-visws/ VISWS specific hardware details include files into include/asm-x86/visws, to be used from generic code. No code changed. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, eliminate asm-x86/mach-visws/mach_apicdef.hIngo Molnar2008-07-101-24/+1
| | | | Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, update asm-x86/mach-visws/mach_apicdef.hIngo Molnar2008-07-101-5/+17
| | | | | | | | | update asm-x86/mach-visws/mach_apicdef.h to the generic version. This should work fine as VISWS has a standard local APIC and thus its mach_apicdef.h copy is just an ancient version of the generic code. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, eliminate ↵Ingo Molnar2008-07-101-59/+1
| | | | | | | | | | include/asm-x86/mach-visws/smpboot_hooks.h now that include/asm-x86/mach-visws/smpboot_hooks.h equals to the default file in ../mach-default/smpboot_hooks.h, simply include it instead of maintaining a copy. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, update ↵Ingo Molnar2008-07-101-7/+38
| | | | | | | | | | | | include/asm-x86/mach-visws/smpboot_hooks.h update include/asm-x86/mach-visws/smpboot_hooks.h to include/asm-x86/mach-default/smpboot_hooks.h (the generic version). this _should_ work, because VISWS sets skip_ioapic_setup, but it should be tested on a real VISWS to make sure. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, enhance ↵Ingo Molnar2008-07-101-0/+6
| | | | | | | | | | include/asm-x86/mach-default/smpboot_hooks.h Allow the generic smpboot quirks code to be built with ONFIG_X86_IO_APIC disabled. This way VISWS will be able to use it as-is. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, eliminate ↵Ingo Molnar2008-07-101-141/+1
| | | | | | | | | | include/asm-x86/mach-visws/mach_apic.h now that include/asm-x86/mach-visws/mach_apic.h equals to include/asm-x86/mach-default/mach_apic.h, simply start using the generic one. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, update asm-x86/mach-visws/mach_apic.hIngo Molnar2008-07-101-33/+71
| | | | | | update asm-x86/mach-visws/mach_apic.h to the generic version. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, VisWS: turn into generic arch, install proper PCI quirkIngo Molnar2008-07-101-0/+2
| | | | Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add early quirk supportIngo Molnar2008-07-101-0/+17
| | | | | | | | | | Add early quirks support. In preparation of enabling the generic architecture to boot on a VISWS. This will allow us to remove the VISWS subarch and all its complications. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'x86/unify-pci' into x86/coreIngo Molnar2008-07-104-7/+29
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| * Merge branch 'x86/core' into x86/unify-pciIngo Molnar2008-07-09145-2212/+4031
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| * \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds2008-07-081-0/+15
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: it8213: fix return value in it8213_init_one() palm_bk3710: fix IDECLK period calculation ide: add __ide_default_irq() inline helper
| | * | ide: add __ide_default_irq() inline helperBartlomiej Zolnierkiewicz2008-07-081-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add __ide_default_irq() inline helper and use it instead of ide_default_irq() in ide-probe.c and ns87415.c (all host drivers except IDE PCI ones always setup hwif->irq so it is enough to check only for I/O bases 0x1f0 and 0x170). This fixes post-2.6.25 regression since ide_default_irq() define could shadow ide_default_irq() inline. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds2008-07-081-1/+4
| |\ \ \ | | |/ / | |/| | | | | | | | | | * 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] protect _PAGE_SPECIAL bit against mprotect
| | * | [S390] protect _PAGE_SPECIAL bit against mprotectNick Piggin2008-07-081-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Stop mprotect's pte_modify from wiping out the s390 pte_special bit, which caused oops thereafter when vm_normal_page thought X's abnormal was normal. Debugged-by: Ryan Hope <rmh3093@gmail.com> Debugged-by: Zan Lynx <zlynx@acm.org> Acked-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | Correct hash flushing from huge_ptep_set_wrprotect()David Gibson2008-07-082-6/+10
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As Andy Whitcroft recently pointed out, the current powerpc version of huge_ptep_set_wrprotect() has a bug. It just calls ptep_set_wrprotect() which in turn calls pte_update() then hpte_need_flush() with the 'huge' argument set to 0. This will cause hpte_need_flush() to flush the wrong hash entries (of any). Andy's fix for this is already in the powerpc tree as commit 016b33c4958681c24056abed8ec95844a0da80a3. I have confirmed this is a real bug, not masked by some other synchronization, with a new testcase for libhugetlbfs. A process write a (MAP_PRIVATE) hugepage mapping, fork(), then alter the mapping and have the child incorrectly see the second write. Therefore, this should be fixed for 2.6.26, and for the stable tree. Here is a suitable patch for 2.6.26, which I think will also be suitable for the stable tree (neither of the headers in question has been changed much recently). It is cut down slighlty from Andy's original version, in that it does not include a 32-bit version of huge_ptep_set_wrprotect(). Currently, hugepages are not supported on any 32-bit powerpc platform. When they are, a suitable 32-bit version can be added - the only 32-bit hardware which supports hugepages does not use the conventional hashtable MMU and so will have different needs anyway. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | x86: clean up iommu.h and gart.hFUJITA Tomonori2008-07-102-42/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This remove lots of duplications in iommu.h and gart.h. The end result of this patch is: - iommu.h is a header file for everyone related with IOMMUs. - gart.h is the private header file. Only pci-gart_64.c and its friends include it. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: fujita.tomonori@lab.ntt.co.jp Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'x86/gart' into x86/coreIngo Molnar2008-07-101-1/+1
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| * | | x86, iommu: replace CONFIG_IOMMU with CONFIG_GART_IOMMU in iommu.hFUJITA Tomonori2008-07-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hmm, looks like it would be nice to have more cleanups of iommu.h and gart.h. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | x86, acpi: merge __acpi_map_tableYinghai Lu2008-07-101-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | and let 64-bit to fall back to use fixmap too. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | x86: build fix for "x86: fix C1E && nx6325 stability problem"Ingo Molnar2008-07-102-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix: arch/x86/kernel/built-in.o: In function `dmi_ignore_irq0_timer_override': boot.c:(.init.text+0x3ea4): undefined reference to `force_mask_ioapic_irq_2' Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | x86: introduce copy_user_handle_tail() routineVitaly Mayatskikh2008-07-091-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce generic C routine for handling necessary tail operations after protection fault in copy_*_user on x86. Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | Merge branch 'x86/unify-lib' into x86/coreIngo Molnar2008-07-095-687/+456
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| * | | x86: define architectural characteristics in uaccess.h.Glauber Costa2008-07-093-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove them from the arch-specific file. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: put movsl_mask into uaccess.h.Glauber Costa2008-07-092-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | x86_64 does not need it, but it won't have X86_INTEL_USERCOPY defined either. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: move __get_user and __put_user into uaccess.h.Glauber Costa2008-07-093-54/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We also carry the unaligned version with us. Only x86_64 uses it, but there's no problem in defining it. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: merge put_user.Glauber Costa2008-07-093-115/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move both versions, which are highly similar, to uaccess.h. Note that, for x86_64, X86_WP_WORKS_OK is always defined. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: turn __put_user_check directly into put_user.Glauber Costa2008-07-091-5/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We also check user pointer in x86_64 put_user, the way i386 does. In a separate patch for bisecting purposes. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: be more explicit in __put_user_x.Glauber Costa2008-07-091-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For both __put_user_x and __put_user_8 macros, pass the error variable explicitly. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: merge __get_user_asm and its users.Glauber Costa2008-07-093-85/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move __get_user_asm and __get_user_size and __get_user_nocheck to uaccess.h. This requires us to define a macro at __get_user_size for the 64-bit access case. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: don't always use EFAULT on __get_user_size.Glauber Costa2008-07-091-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Let the user of the macro specify the desired return. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: merge __put_user_asm and its user.Glauber Costa2008-07-093-128/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move both __put_user_asm and __put_user_size to uaccess.h. i386 already had a special function for 64-bit access, so for x86_64, we just define a macro with the same name. Note that for X86_64, CONFIG_X86_WP_WORKS_OK will always be defined, so the #else part will never be even compiled in. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: don't always use EFAULT on __put_user_size.Glauber Costa2008-07-091-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Let the user of the macro specify the desired return. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: use k modifier for 4-byte access.Glauber Costa2008-07-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do it in a separate patch for bisectability. Goal is to have put_user_size integrated. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: move __addr_ok to uaccess.h.Glauber Costa2008-07-093-7/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take it out of uaccess_32.h. Since it seems that no users of the x86_64 exists, we simply pick the i386 version. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: merge getuser.Glauber Costa2008-07-093-72/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge versions of getuser from uaccess_32.h and uaccess_64.h into uaccess.h. There is a part which is 64-bit only (for now), and for that, we use a __get_user_8 macro. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: merge common parts of uaccess.Glauber Costa2008-07-093-193/+124
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Common parts of uaccess_32.h and uaccess_64.h are put in uaccess.h. Bits in uaccess_32.h and uaccess_64.h that come to this file are equal except for comments and whitespaces differences. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: use something common for both architectures.Glauber Costa2008-07-092-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using explicit hexa (0xFFFFFFUL) introduces an unnecessary difference between i386 and x86_64 because of the size of their long. Use -1UL instead. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: use long instead of int.Glauber Costa2008-07-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not refer to the processor word-size with int, as it won't work with x86_64. Use long instead. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: introduce likely in macro.Glauber Costa2008-07-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Put the likely hint in access_ok. Just for bisectability. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: change asm constraint.Glauber Costa2008-07-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Our integration efforts broke a build with this function being used with i386. Reason is "g" can put the operand in an imm32, which according to The Book (tm), is invalid as the second operand. This is actually a bug in x86_64 too, since the x86_64 instruction set reference does not list it as valid. We probably didn't trigger this before due to the ammount of registers available for 64-bit platforms. But that's just my guess. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: commonize __range_not_ok.Glauber Costa2008-07-092-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For i386, __range_not_ok is a better name than __range_ok, since it returns 0 when it is in fact okay. Other than that, both versions does not need the word size specifiers, and we remove them. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: use macros from asm.h.Glauber Costa2008-07-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In putuser_32.S and putuser_64.S, replace things like .quad, .long, and explicit references to [r|e]ax for the apropriate macros in asm/asm.h. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: pass argument to putuser_64 functions in ax register.Glauber Costa2008-07-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is consistent with i386 usage. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: clobber rbx in putuser_64.S.Glauber Costa2008-07-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of clobbering r8, clobber rbx, which is the i386 way. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | x86: user put_user_x instead of all variants.Glauber Costa2008-07-091-18/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Follow the pattern, and define a single put_user_x, instead of defining macros for all available sizes. Exception is put_user_8, since the "A" constraint does not give us enough power to specify which register (a or d) to use in the 32-bit common case. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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