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2008-02-26x86: don't use P6_NOPs if compiling with CONFIG_X86_GENERICH. Peter Anvin
P6_NOPs are definitely not supported on some VIA CPUs, and possibly (unverified) on AMD K7s. It is also the only thing that prevents a 686 kernel from running on Transmeta TM3x00/5x00 (Crusoe) series. The performance benefit over generic NOPs is very small, so when building for generic consumption, avoid using them. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-26x86: require family >= 6 if we are using P6 NOPsH. Peter Anvin
The P6 family of NOPs are only available on family >= 6 or above, so enforce that in the boot code. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-26x86: do not promote TM3x00/TM5x00 to i686-classH. Peter Anvin
We have been promoting Transmeta TM3x00/TM5x00 chips to i686-class based on the notion that they contain all the user-space visible features of an i686-class chip. However, this is not actually true: they lack the EA-taking long NOPs (0F 1F /0). Since this is a userspace-visible incompatibility, downgrade these CPUs to the manufacturer-defined i586 level. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-26x86: hpet fix docbook commentPavel Machek
Signed-off-by: Pavel Machek <Pavel@suse.cz> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-26x86: make DEBUG_PAGEALLOC and CPA more robustIngo Molnar
Use PF_MEMALLOC to prevent recursive calls in the DBEUG_PAGEALLOC case. This makes the code simpler and more robust against allocation failures. This fixes the following fallback to non-mmconfig: http://lkml.org/lkml/2008/2/20/551 http://bugzilla.kernel.org/show_bug.cgi?id=10083 Also, for DEBUG_PAGEALLOC=n reduce the pool size to one page. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-26x86/lguest: fix pgdir pmd index calculationAhmed S. Darwish
Hi all, Beginning from commits close to v2.6.25-rc2, running lguest always oopses the host kernel. Oops is at [1]. Bisection led to the following commit: commit 37cc8d7f963ba2deec29c9b68716944516a3244f x86/early_ioremap: don't assume we're using swapper_pg_dir At the early stages of boot, before the kernel pagetable has been fully initialized, a Xen kernel will still be running off the Xen-provided pagetables rather than swapper_pg_dir[]. Therefore, readback cr3 to determine the base of the pagetable rather than assuming swapper_pg_dir[]. static inline pmd_t * __init early_ioremap_pmd(unsigned long addr) { - pgd_t *pgd = &swapper_pg_dir[pgd_index(addr)]; + /* Don't assume we're using swapper_pg_dir at this point */ + pgd_t *base = __va(read_cr3()); + pgd_t *pgd = &base[pgd_index(addr)]; pud_t *pud = pud_offset(pgd, addr); pmd_t *pmd = pmd_offset(pud, addr); Trying to analyze the problem, it seems on the guest side of lguest, %cr3 has a different value from &swapper_pg-dir (which is AFAIK fine on a pravirt guest): Putting some debugging messages in early_ioremap_pmd: /* Appears 3 times */ [ 0.000000] *************************** [ 0.000000] __va(%cr3) = c0000000, &swapper_pg_dir = c02cc000 [ 0.000000] *************************** After 8 hours of debugging and staring on lguest code, I noticed something strange in paravirt_ops->set_pmd hypercall invocation: static void lguest_set_pmd(pmd_t *pmdp, pmd_t pmdval) { *pmdp = pmdval; lazy_hcall(LHCALL_SET_PMD, __pa(pmdp)&PAGE_MASK, (__pa(pmdp)&(PAGE_SIZE-1))/4, 0); } The first hcall parameter is global pgdir which looks fine. The second parameter is the pmd index in the pgdir which is suspectful. AFAIK, calculating the index of pmd does not need a divisoin over four. Removing the division made lguest work fine again . Patch is at [2]. I am not sure why the division over four existed in the first place. It seems bogus, maybe the Xen patch just made the problem appear ? [2]: The patch: [PATCH] lguest: fix pgdir pmd index cacluation Remove an error in index calculation which leads to removing a not existing shadow page table (leading to a Null dereference). Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-26lguest: fix build breakageTony Breeds
[ mingo@elte.hu: merged to Rusty's patch ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-26lguest: include function prototypesHarvey Harrison
Added a declaration to asm-x86/lguest.h and moved the extern arrays there as well. As an alternative to including asm/lguest.h directly, an include could be put in linux/lguest.h Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: "rusty@rustcorp.com.au" <rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-22Mark CC_STACKPROTECTOR as being BROKENLinus Torvalds
It's always been broken, but recent fixes actually made it do something, and now the brokenness shows up as the resulting kernel simply not working at all. So it used to be that you could enable this config option, and it just didn't do anything. Now we'd better stop people from enabling it by mistake, since it _does_ do something, but does it so badly as to be unusable. Code to actually make it work is pending, but incomplete and won't be merged into 2.6.25 in any case. Acked-by: Arjan van de Ven <arjan@infradead.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Cc: James Morris <jmorris@namei.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-22x86 ptrace: fix compat PTRACE_SETREGSRoland McGrath
Simple typo fix for regression introduced by the user_regset changes. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-21Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (26 commits) PM: Make suspend_device() static PCI ACPI: Fix comment describing acpi_pci_choose_state Hibernation: Handle DEBUG_PAGEALLOC on x86 ACPI: fix build warning ACPI: TSC breaks atkbd suspend ACPI: remove is_processor_present prototype acer-wmi: Add DMI match for mail LED on Acer TravelMate 4200 series ACPI: sparse fix, replace macro with static function ACPI: thinkpad-acpi: add tablet-mode reporting ACPI: thinkpad-acpi: minor hotkey_radio_sw fixes ACPI: thinkpad-acpi: improve thinkpad-acpi input device documentation ACPI: thinkpad-acpi: issue input events for tablet swivel events ACPI: thinkpad-acpi: make the video output feature optional ACPI: thinkpad-acpi: synchronize input device switches ACPI: thinkpad-acpi: always track input device open/close ACPI: thinkpad-acpi: trivial fix to documentation ACPI: thinkpad-acpi: trivial fix to module_desc typo intel_menlo: extract return values using PTR_ERR ACPI video: check for error from thermal_cooling_device_register ACPI thermal: extract return values using PTR_ERR ...
2008-02-21PCI: don't load acpi_php when acpi is disabledYinghai Lu
When acpi=off and pci=nomsi, don't load acpiphp. Fixes this: pci_hotplug: PCI Hot Plug PCI Core version: 0.5 acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5 ACPI Exception (utmutex-0263): AE_BAD_PARAMETER, Thread FFFF81103CC54000 could not acquire Mutex [1] [20070126] [akpm@linux-foundation.org: export acpi_pci_disabled for acpiphp.ko] [akpm@linux-foundation.org: fix return statement] Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-21PCI: irq: patch for Intel ICH10 DeviceID'sJason Gaston
This patch adds the Intel ICH10 LPC Controller DeviceID's. Signed-off-by: Jason Gaston <jason.d.gaston@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-02-21Hibernation: Handle DEBUG_PAGEALLOC on x86Rafael J. Wysocki
Make hibernation work with CONFIG_DEBUG_PAGEALLOC set on x86, by checking if the pages to be copied are marked as present in the kernel mapping and temporarily marking them as present if that's not the case. No functional modifications are introduced if CONFIG_DEBUG_PAGEALLOC is unset. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
2008-02-19Merge branch 'agp-patches' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6 * 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6: agp: fix missing casts that produced a warning. agp: add support for 662/671 to agp driver fix historic ioremap() abuse in AGP agp/sis: Suspend support for SiS AGP agp/sis: Clear bit 2 from aperture size byte as well
2008-02-19x86: fix page_is_ram() thinkoArjan van de Ven
page_is_ram() has a special case for the 640k-1M bios area, however due to a thinko the special case checks the e820 table entry and not the memory the user has asked for. This patch fixes the bug. [ mingo@elte.hu: this too is better solved in the e820 space, but those fixes are too intrusive for v2.6.25. ] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix WARN_ON() message: teach page_is_ram() about the special 4Kb bios ↵Arjan van de Ven
data page This patch teaches page_is_ram() about the fact that the first 4Kb of memory are special on x86, even though the E820 table normally doesn't exclude it. This fixes the WARN_ON() reported by Laurent Riffard who was also very helpful in diagnosing the issue. [ mingo@elte.hu: we are working on doing this properly in the e820 space, but for 2.6.25 this is the better fix. ] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: i8259A: remove redundant irq_descinitializationAhmed S. Darwish
Remove redundant irq_desc[NR_IRQS] element initialization in init_ISA_irqs(). irq_desc[NR_IRQS] is already statically initialized with the same values in kernel/irq/handle.c . besides the clean-up value this also saves some space: text data bss dec hex filename 1389 356 14 1759 6df i8259_32.o.before 1325 356 14 1695 69f i8259_32.o.after Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix vdso_install breaks user "make install"Sam Ravnborg
I suggest to make the vdso_install step independent as in following patch. This solves the issue at ahnd and still gives us the posibility to install the files should they be needed. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: change IO delay back to 0x80Ingo Molnar
change back the IO delay to 0x80. Alan says that 0xed is known to break some older boxes, and given that the get-rid-of-outb-APIs efforts are well underway we should just let them be finished. Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: lds - Use THREAD_SIZE instead of numeric constantCyrill Gorcunov
Though we use PDA for regular task stack but that is not acceptable for init_task wich is special one. We still have to allocate init_task's stack in that manner. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: lds - Use PAGE_SIZE instead of numeric constantCyrill Gorcunov
It's much better to use PAGE_SIZE then magic 4096 (though it's almost synonym in most cases on x86 but not for *all* cases ;) Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86 cleanup: suspend_asm_64.S - use X86_CR4_PGE instead of numeric valueCyrill Gorcunov
By including <asm/processor-flags.h> we're allowed to use X86_CR4_PGE instead of numeric constant. md5 sums of compiled files are differ due to this inclusion but .text section remains the same. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix printout ugliness in cpu info printkMarcin Slusarz
fix print_cpu_info, because it produced on boot: CPU: <6>AMD Athlon(tm) 64 Processor 3200+ stepping 00 instead of: CPU: AMD Athlon(tm) 64 Processor 3200+ stepping 00 (broken since 04e1ba852132c9ad006affcd5b8c8606295170b0 - x86: cleanup kernel/setup_64.c) Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: clean up csum-wrappers_64.c some moreIngo Molnar
no code changed: arch/x86/lib/csum-wrappers_64.o: text data bss dec hex filename 839 0 0 839 347 csum-wrappers_64.o.before 839 0 0 839 347 csum-wrappers_64.o.after md5: b31994226c33e0b52bef5a0e110b84b0 csum-wrappers_64.o.before.asm b31994226c33e0b52bef5a0e110b84b0 csum-wrappers_64.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: coding style fixes in arch/x86/lib/csum-wrappers_64.cPaolo Ciarrocchi
no code changed: arch/x86/lib/csum-wrappers_64.o: text data bss dec hex filename 839 0 0 839 347 csum-wrappers_64.o.before 839 0 0 839 347 csum-wrappers_64.o.after md5: b31994226c33e0b52bef5a0e110b84b0 csum-wrappers_64.o.before.asm b31994226c33e0b52bef5a0e110b84b0 csum-wrappers_64.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: coding style fixes in arch/x86/lib/io_64.cPaolo Ciarrocchi
This simple patch makes the file error free (according to checkpatch.pl) no code changed: arch/x86/lib/io_64.o: text data bss dec hex filename 308 0 0 308 134 io_64.o.before 308 0 0 308 134 io_64.o.after md5: 3c64f9ed83d091678e849b36ca27bee3 io_64.o.before.asm 3c64f9ed83d091678e849b36ca27bee3 io_64.o.after.asm Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: exclude vsyscall files from stackprotectIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: annotate pci/common.s:pci_scan_bus_with_sysdata with __devinitSam Ravnborg
Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix section mismatch in head_64.S:initial_codeSam Ravnborg
initial_code are initially used to hold a function pointer from __init and later from __cpuinit. This confuses modpost and changing initial_code to REFDATA silence the warning. (But now we do not discard the variable anymore). Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix section mismatch in srat_64.c:reserve_hotaddSam Ravnborg
reserve_hotadd() are only used by __init acpi_numa_memory_affinity_init(). Annotate reserve_hotadd() with __init is the trivial fix. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix section mismatch warning in topology.c:arch_register_cpuSam Ravnborg
arch_register_cpu() is only defined for HOTPLUG_CPU code so simple fix is to ignore references by annotating the function __ref. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix section mismatch in setup_64.c:srat_detect_nodeSam Ravnborg
srat_detect_node() is only used by __cpuinit init_intel(). So the trivial fix is to annotate srat_detect_node() with __cpuinit. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix section mismatch warning in setup_64.c:nearby_nodeSam Ravnborg
nearby_node() were only used by __cpuinit amd_detect_cmp() So annotating nearby_node() __cpuinit was the trivial fix. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: fix compile warning building without CONFIG_SYSCTLLi Zefan
arch/x86/kernel/nmi_64.c:50: warning: 'unknown_nmi_panic_callback' declared 'static' but never defined This patch also fixes nmi_32.c Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: CPA: remove BUG_ON for LRU/Compound pagesAndi Kleen
New implementation does not use lru for anything so there is no need to reject pages that are in the LRU. Similar for compound pages (which were checked because they also use page->lru) [ tglx@linutronix.de: removed unused variable ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: don't make swapper_pg_fixmap globalAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Ian Campbell <ijc@hellion.org.uk> Cc: hpa@zytor.com Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: don't make irq_return globalAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: hpa@zytor.com Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: unexport io_delay_typeAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: hpa@zytor.com Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: make mxcsr_feature_mask static againAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Roland McGrath <roland@redhat.com> Cc: hpa@zytor.com Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: sparse warning in efi.cHarvey Harrison
Yes, it should. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86: sparse error in efi_32.cHarvey Harrison
arch/x86/kernel/efi_32.c:42:6: warning: symbol 'efi_call_phys_prelog' was not declared. Should it be static? arch/x86/kernel/efi_32.c:84:6: warning: symbol 'efi_call_phys_epilog' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19x86, kprobes: remove sparse warnings from x86Harvey Harrison
arch/x86/kernel/kprobes.c:584:16: warning: symbol 'kretprobe_trampoline_holder' was not declared. Should it be static? arch/x86/kernel/kprobes.c:676:6: warning: symbol 'trampoline_handler' was not declared. Should it be static? Make them static and add the __used attribute, approach taken from the arm kprobes implementation. kretprobe_trampoline_holder uses inline assemly to define the global symbol kretprobe_trampoline, but nothing ever calls the holder explicitly. trampoline handler is only called from inline assembly in the same file, mark it used and static. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19remove mca-pentiumAdrian Bunk
This patch removes the mca-pentium boot option that was a noop. besides the source code cleanup factor, this saves some text as well: arch/x86/kernel/cpu/bugs.o: text data bss dec hex filename 651 77 4 732 2dc bugs.o.before 631 53 4 688 2b0 bugs.o.after Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-19fix historic ioremap() abuse in AGPArjan van dev Ven
Several AGP drivers right now use ioremap_nocache() on kernel ram in order to turn a page of regular memory uncached. There are two problems with this: 1) This is a total nightmare for the ioremap() implementation to keep various mappings of the same page coherent. 2) It's a total nightmare for the AGP code since it adds a ton of complexity in terms of keeping track of 2 different pointers to the same thing, in terms of error handling etc etc. This patch fixes this by making the AGP drivers use the new set_memory_XX APIs instead. Note: amd-k7-agp.c is built on Alpha too, and generic.c is built on ia64 as well, which do not yet have the set_memory_*() APIs, so for them some we have a few ugly #ifdefs - hopefully they'll be fixed soon. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-02-18x86: fix lguest build failureRusty Russell
drivers/lguest/x86/switcher_32.S:(.text+0x3815f8): undefined reference to `LGUEST_PAGES_regs_trapnum' This problem was caused by asm-offsets.c only having the offsets when lguest *guest* support was set, not lguest host (host support used to imply guest support, so now they're separate these bugs come out). Lguest guest support and host support are separate config options: they used to be tied together. Sort out which parts of asm-offsets are needed for Guest and Host. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-18x86: reenable support for system without on node0Yinghai Lu
One system doesn't have RAM for node0 installed. SRAT: PXM 0 -> APIC 0 -> Node 0 SRAT: PXM 0 -> APIC 1 -> Node 0 SRAT: PXM 1 -> APIC 2 -> Node 1 SRAT: PXM 1 -> APIC 3 -> Node 1 SRAT: Node 1 PXM 1 0-a0000 SRAT: Node 1 PXM 1 0-dd000000 SRAT: Node 1 PXM 1 0-123000000 ACPI: SLIT: nodes = 2 10 13 13 10 mapped APIC to ffffffffff5fb000 ( fee00000) Bootmem setup node 1 0000000000000000-0000000123000000 NODE_DATA [000000000000e000 - 0000000000014fff] bootmap [0000000000015000 - 00000000000395ff] pages 25 Could not find start_pfn for node 0 Pid: 0, comm: swapper Not tainted 2.6.24-smp-g5a514e21-dirty #14 Call Trace: [<ffffffff80bab498>] free_area_init_node+0x22/0x381 [<ffffffff8045ffc5>] generic_swap+0x0/0x17 [<ffffffff80bab0cc>] find_zone_movable_pfns_for_nodes+0x54/0x271 [<ffffffff80baba5f>] free_area_init_nodes+0x239/0x287 [<ffffffff80ba6311>] paging_init+0x46/0x4c [<ffffffff80b9dda5>] setup_arch+0x3c3/0x44e [<ffffffff80b978be>] start_kernel+0x6f/0x2c7 [<ffffffff80b971cc>] _sinittext+0x1cc/0x1d3 This happens because node 0 is not online, but the node state in mm/page_alloc.c has node 0 set. nodemask_t node_states[NR_NODE_STATES] __read_mostly = { [N_POSSIBLE] = NODE_MASK_ALL, [N_ONLINE] = { { [0] = 1UL } }, So we need to clear node_online_map before initializing the memory. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-18x86: CPA: avoid double checking of alias rangesThomas Gleixner
When the CPA code is called with an virtual address in the range of the direct mapping or the high alias then we do not need to run through the alias check for this range. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-18x86: CPA no alias checking for _NXThomas Gleixner
NX settings are not required to be consistent across alias mappings. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-18x86: zap invalid and unused pmds in early bootThomas Gleixner
The early boot code maps KERNEL_TEXT_SIZE (currently 40MB) starting from __START_KERNEL_map. The kernel itself only needs _text to _end mapped in the high alias. On relocatible kernels the ASM setup code adjusts the compile time created high mappings to the relocation. This creates invalid pmd entries for negative offsets: 0xffffffff80000000 -> pmd entry: ffffffffff2001e3 It points outside of the physical address space and is marked present. This starts at the virtual address __START_KERNEL_map and goes up to the point where the first valid physical address (0x0) is mapped. Zap the mappings before _text and after _end right away in early boot. This removes also the invalid entries. Furthermore it simplifies the range check for high aliases. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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