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* x86: make 64bit hpet_set_mapping to use ioremap too, v2Yinghai Lu2008-07-14
| | | | | | | keep the one for VSYSCALL_HPET Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: change _node_to_cpumask_ptr to return const ptrMike Travis2008-07-13
| | | | | | | | | | | | * Strengthen the return type for the _node_to_cpumask_ptr to be a const pointer. This adds compiler checking to insure that node_to_cpumask_map[] is not changed inadvertently. Signed-off-by: Mike Travis <travis@sgi.com> Cc: "akpm@linux-foundation.org" <akpm@linux-foundation.org> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Acked-by: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: I/O APIC: remove an IRQ2-mask hackMaciej W. Rozycki2008-07-13
| | | | | | | | | | | | | Now that IRQ2 is never made available to the I/O APIC, there is no need to special-case it and mask as a workaround for broken systems. Actually, because of the former, mask_IO_APIC_irq(2) is a no-op already. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix numaq_tsc_disable callingYinghai Lu2008-07-13
| | | | | | | | | | | | | | | | got this on a test-system: calling numaq_tsc_disable+0x0/0x39 NUMAQ: disabling TSC initcall numaq_tsc_disable+0x0/0x39 returned 0 after 0 msecs that's because we should not be using arch_initcall to call numaq_tsc_disable. need to call it in setup_arch before time_init()/tsc_init() and call it in init_intel() to make the cpu feature bits right. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'x86/generalize-visws' into x86/coreIngo Molnar2008-07-11
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| * x86, VisWS: turn into generic arch, add NR_IRQS quirkIngo Molnar2008-07-10
| | | | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, VisWS: turn into generic arch, update asm-x86/mach-visws/mach_apicdef.hIngo Molnar2008-07-10
| | | | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: add early quirk supportIngo Molnar2008-07-10
| | | | | | | | | | | | | | | | | | | | 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>
* | x86: merge dwarf2 headersGlauber Costa2008-07-11
| | | | | | | | | | | | | | Merge dwarf2_32.h and dwarf2_64.h into dwarf2.h. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | x86: use AS_CFI instead of UNWIND_INFOGlauber Costa2008-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In dwarf2_32.h, test for CONFIG_AS_CFI instead of CONFIG_UNWIND_INFO. Turns out that searching for UNWIND_INFO returns no match in any Kconfig or Makefile, so we're really just throwing everything away regarding dwarf frames for i386. The test that generates CONFIG_AS_CFI does not have anything x86_64-specific, and right now, checking V=1 builds shows me that the flags is there anyway, although unused. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | x86: use ignore macro instead of hash commentGlauber Costa2008-07-11
| | | | | | | | | | | | | | | | In dwarf_64.h header, use the "ignore" macro the way i386 does. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | x86: fix savesegment() bug causing crashes on 64-bitIngo Molnar2008-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | i spent a fair amount of time chasing a 64-bit bootup crash that manifested itself as bootup segfaults: S10network[1825]: segfault at 7f3e2b5d16b8 ip 00000031108748c9 sp 00007fffb9c14c70 error 4 in libc-2.7.so[3110800000+14d000] eventually causing init to die and panic the system: Kernel panic - not syncing: Attempted to kill init! Pid: 1, comm: init Not tainted 2.6.26-rc9-tip #13878 after a maratonic bisection session, the bad commit turned out to be: | b7675791859075418199c7af86a116ea34eaf5bd is first bad commit | commit b7675791859075418199c7af86a116ea34eaf5bd | Author: Jeremy Fitzhardinge <jeremy@goop.org> | Date: Wed Jun 25 00:19:00 2008 -0400 | | x86: remove open-coded save/load segment operations | | This removes a pile of buggy open-coded implementations of savesegment | and loadsegment. after some more bisection of this patch itself, it turns out that what makes the difference are the savesegment() changes to __switch_to(). Taking a look at this portion of arch/x86/kernel/process_64.o revealed this crutial difference: | good: 99c: 8c e0 mov %fs,%eax | 99e: 89 45 cc mov %eax,-0x34(%rbp) | | bad: 99c: 8c 65 cc mov %fs,-0x34(%rbp) which is due to: | unsigned fsindex; | - asm volatile("movl %%fs,%0" : "=r" (fsindex)); | + savesegment(fs, fsindex); savesegment() is implemented as: #define savesegment(seg, value) \ asm("mov %%" #seg ",%0":"=rm" (value) : : "memory") note the "m" modifier - it allows GCC to generate the segment move into a memory operand as well. But regarding segment operands there's a subtle detail in the x86 instruction set: the above 16-bit moves are zero-extend, but only if it goes to a register. If it goes to a memory operand, -0x34(%rbp) in the above case, there's no zero-extend to 32-bit and the instruction will only save 16 bits instead of the intended 32-bit. The other 16 bits is random data - which can cause problems when that value is used later on. The solution is to only allow segment operands to go to registers. This fix allows my test-system to boot up without crashing. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | x86_64: add pseudo-features for 32-bit compat syscallJeremy Fitzhardinge2008-07-11
| | | | | | | | | | | | | | | | | | Add pseudo-feature bits to describe whether the CPU supports sysenter and/or syscall from ia32-compat userspace. This removes a hardcoded test in vdso32-setup. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | x86: introduce max_low_pfn_mapped for 64-bitYinghai Lu2008-07-11
|/ | | | | | | | when more than 4g memory is installed, don't map the big hole below 4g. 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: clean up iommu.h and gart.hFUJITA Tomonori2008-07-10
| | | | | | | | | | | | | | | 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 Molnar2008-07-10
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| * x86, iommu: replace CONFIG_IOMMU with CONFIG_GART_IOMMU in iommu.hFUJITA Tomonori2008-07-09
| | | | | | | | | | | | | | | | 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 Lu2008-07-10
| | | | | | | | | | | | | | | | 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 Molnar2008-07-10
| | | | | | | | | | | | | | | | | | 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 Mayatskikh2008-07-09
| | | | | | | | | | | | | | | | | | 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 Molnar2008-07-09
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| * | x86: define architectural characteristics in uaccess.h.Glauber Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Costa2008-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
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