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2008-07-08x86: clean up using max_low_pfn on 32-bitYinghai Lu
so that max_low_pfn is not changed after it is set. so we can move that early and out of initmem_init. could call find_low_pfn_range just after max_pfn is set. also could move reserve_initrd out of setup_bootmem_allocator so 32bit is more like 64bit. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce reserve_initrdYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce initmem_init for 32 bitYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce initmem_init for 64 bitYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move reserve_standard_io_resource to setup.cYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: seperate probe_roms into another fileYinghai Lu
it is only needed for 32bit Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: add e820_remove_rangeYinghai Lu
... so could add real hole in e820 agp check is using request_mem_region, and could fail if e820 is reserved... Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: change identify_cpu to staticYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: seperate funcs from setup_64 to cpu common_64.cYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@mail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: check command line when CONFIG_X86_MPPARSE is not set, v2Yinghai Lu
if acpi=off, acpi=noirq and pci=noacpi, we need to disable apic. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move cpu_exit_clear to process_32.cGlauber Costa
Take it out of smpboot.c, and move it to process_32.c, closer to its only user. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: change __setup_vector_irq with setup_vector_irqGlauber Costa
We create a version of it for i386, and then take the CONFIG_X86_64 ifdef out of the game. We could create a __setup_vector_irq for i386, but it would incur in an unnecessary lock taking. Moreover, it is better practice to only export setup_vector_irq anyway. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move x86_64 gdt closer to i386Glauber Costa
i386 and x86_64 used two different schemes for maintaining the gdt. With this patch, x86_64 initial gdt table is defined in a .c file, same way as i386 is now. Also, we call it "gdt_page", and the descriptor, "early_gdt_descr". This way we achieve common naming, which can allow for more code integration. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: unify crashkernel reservation for 32 and 64 bitBernhard Walle
This patch moves the reserve_crashkernel() to setup.c and removes the architecture-specific version. Both versions were more or less the same. I tested it on both x86-64 and i386, with CONFIG_KEXEC on and off (so that it compiles). Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'x86/fixmap' into x86/develIngo Molnar
Conflicts: arch/x86/mm/init_64.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'x86/uv' into x86/develIngo Molnar
2008-07-08x86: increase MAX_APICS for very large x86-64 configsJack Steiner
Increase the maximum number of apics when running very large configurations. This patch has no affect on most systems. The patch has no effect on any 32-bit kernel. It adds ~4k to the size of 64-bit kernels but only if NR_CPUS > 255. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: fix stack overflow for large values of MAX_APICSJack Steiner
physid_mask_of_physid() causes a huge stack (12k) to be created if the number of APICS is large. Replace physid_mask_of_physid() with a new function that does not create large stacks. This is a problem only on large x86_64 systems. this paves the way to increase MAX_APICS. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: linux-mm@kvack.org Cc: mingo@elte.hu Cc: tglx@linutronix.de Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08SGI UV: TLB shootdown using broadcast assist unitIngo Molnar
TLB shootdown for SGI UV. v5: 6/12 corrections/improvements per Ingo's second review Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08SGI UV: TLB shootdown using broadcast assist unit, cleanupsCliff Wickman
TLB shootdown for SGI UV. v1: 6/2 original v2: 6/3 corrections/improvements per Ingo's review v3: 6/4 split atomic operations off to a separate patch (Jeremy's review) v4: 6/12 include <mach_apic.h> rather than <asm/mach-bigsmp/mach_apic.h> (fixes a !SMP build problem that Ingo found) fix the index on uv_table_bases[blade] Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86 atomic operations: atomic_or_long() atomic_inc_short()Cliff Wickman
Provide atomic operations for increment of a 16-bit integer and logical OR into a 64-bit integer. Signed-off-by: Cliff Wickman <cpw@sgi.com> Reviewed-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, SGI UV: TLB shootdown using broadcast assist unitCliff Wickman
TLB shootdown for SGI UV. Depends on patch (in tip/x86/irq): x86-update-macros-used-by-uv-platform.patch Jack Steiner May 29 This patch provides the ability to flush TLB's in cpu's that are not on the local node. The hardware mechanism for distributing the flush messages is the UV's "broadcast assist unit". The hook to intercept TLB shootdown requests is a 2-line change to native_flush_tlb_others() (arch/x86/kernel/tlb_64.c). This code has been tested on a hardware simulator. The real hardware is not yet available. The shootdown statistics are provided through /proc/sgi_uv/ptc_statistics. The use of /sys was considered, but would have required the use of many /sys files. The debugfs was also considered, but these statistics should be available on an ongoing basis, not just for debugging. Issues to be fixed later: - The IRQ for the messaging interrupt is currently hardcoded as 200 (see UV_BAU_MESSAGE). It should be dynamically assigned in the future. - The use of appropriate udelay()'s is untested, as they are a problem in the simulator. Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'linus' into x86/irqIngo Molnar
2008-07-08Merge branch 'x86/nmi' into x86/develIngo Molnar
Conflicts: arch/x86/kernel/nmi.c arch/x86/kernel/nmi_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'x86/numa' into x86/develIngo Molnar
Conflicts: arch/x86/Kconfig arch/x86/kernel/e820.c arch/x86/kernel/efi_64.c arch/x86/kernel/mpparse.c arch/x86/kernel/setup.c arch/x86/kernel/setup_32.c arch/x86/mm/init_64.c include/asm-x86/proto.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: add flags parameter to reserve_bootmem_generic()Bernhard Walle
This patch adds a 'flags' parameter to reserve_bootmem_generic() like it already has been added in reserve_bootmem() with commit 72a7fe3967dbf86cb34e24fbf1d957fe24d2f246. It also changes all users to use BOOTMEM_DEFAULT, which doesn't effectively change the behaviour. Since the change is x86-specific, I don't think it's necessary to add a new API for migration. There are only 4 users of that function. The change is necessary for the next patch, using reserve_bootmem_generic() for crashkernel reservation. Signed-off-by: Bernhard Walle <bwalle@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: remove static boot_cpu_pda array v2Mike Travis
* Remove the boot_cpu_pda array and pointer table from the data section. Allocate the pointer table and array during init. do_boot_cpu() will reallocate the pda in node local memory and if the cpu is being brought up before the bootmem array is released (after_bootmem = 0), then it will free the initial pda. This will happen for all cpus present at system startup. This removes 512k + 32k bytes from the data section. For inclusion into sched-devel/latest tree. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-08x86: remove the static 256k node_to_cpumask_mapMike Travis
* Consolidate node_to_cpumask operations and remove the 256k byte node_to_cpumask_map. This is done by allocating the node_to_cpumask_map array after the number of possible nodes (nr_node_ids) is known. * Debug printouts when CONFIG_DEBUG_PER_CPU_MAPS is active have been increased. It now shows faults when calling node_to_cpumask() and node_to_cpumask_ptr(). For inclusion into sched-devel/latest tree. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-08x86: restore pda nodenumber fieldMike Travis
* Restore the nodenumber field in the x86_64 pda. This field is slightly different than the x86_cpu_to_node_map mainly because it's a static indication of which node the cpu is on while the cpu to node map is a dyanamic mapping that may get reset if the cpu goes offline. This also simplifies the numa_node_id() macro. For inclusion into sched-devel/latest tree. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-08x86: cleanup early per cpu variables/accesses v4Mike Travis
* Introduce a new PER_CPU macro called "EARLY_PER_CPU". This is used by some per_cpu variables that are initialized and accessed before there are per_cpu areas allocated. ["Early" in respect to per_cpu variables is "earlier than the per_cpu areas have been setup".] This patchset adds these new macros: DEFINE_EARLY_PER_CPU(_type, _name, _initvalue) EXPORT_EARLY_PER_CPU_SYMBOL(_name) DECLARE_EARLY_PER_CPU(_type, _name) early_per_cpu_ptr(_name) early_per_cpu_map(_name, _idx) early_per_cpu(_name, _cpu) The DEFINE macro defines the per_cpu variable as well as the early map and pointer. It also initializes the per_cpu variable and map elements to "_initvalue". The early_* macros provide access to the initial map (usually setup during system init) and the early pointer. This pointer is initialized to point to the early map but is then NULL'ed when the actual per_cpu areas are setup. After that the per_cpu variable is the correct access to the variable. The early_per_cpu() macro is not very efficient but does show how to access the variable if you have a function that can be called both "early" and "late". It tests the early ptr to be NULL, and if not then it's still valid. Otherwise, the per_cpu variable is used instead: #define early_per_cpu(_name, _cpu) \ (early_per_cpu_ptr(_name) ? \ early_per_cpu_ptr(_name)[_cpu] : \ per_cpu(_name, _cpu)) A better method is to actually check the pointer manually. In the case below, numa_set_node can be called both "early" and "late": void __cpuinit numa_set_node(int cpu, int node) { int *cpu_to_node_map = early_per_cpu_ptr(x86_cpu_to_node_map); if (cpu_to_node_map) cpu_to_node_map[cpu] = node; else per_cpu(x86_cpu_to_node_map, cpu) = node; } * Add a flag "arch_provides_topology_pointers" that indicates pointers to topology cpumask_t maps are available. Otherwise, use the function returning the cpumask_t value. This is useful if cpumask_t set size is very large to avoid copying data on to/off of the stack. * The coverage of CONFIG_DEBUG_PER_CPU_MAPS has been increased while the non-debug case has been optimized a bit. * Remove an unreferenced compiler warning in drivers/base/topology.c * Clean up #ifdef in setup.c For inclusion into sched-devel/latest tree. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-08Merge branch 'x86/mpparse' into x86/develIngo Molnar
Conflicts: arch/x86/Kconfig arch/x86/kernel/io_apic_32.c arch/x86/kernel/setup_64.c arch/x86/mm/init_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: update mptable fix with no ioapic v2Yinghai Lu
if the system doesn't have ioapic, we don't need to store entries for mptable update also let mp_config_acpi_gsi not call func in mpparse so later could decouple mpparse with acpi more easily Reported-by: Daniel Exner <dex@dragonslave.de> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Daniel Exner <dex@dragonslave.de> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: cleanup machine_specific_memory_setup, v2Yinghai Lu
1. let 64bit support 88 and e801 too 2. introduce default_machine_specific_memory_setup, and reuse it for voyager v2: fix 64 bit compiling Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: remove unused file after numaq etc depends on genericarchYinghai Lu
we don't need those mach_mpspec.h files now. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: use acpi_numa_init to parse on 32-bit numaYinghai Lu
seperate SRAT finding and parsing from get_memcfg_from_srat, and let getmemcfg_from_srat only handle array from previous step. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: merge setup_memory_map with e820Yinghai Lu
... and kill e820_32/64.c and e820_32/64.h Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: kill bad_pproYinghai Lu
so don't punish all other cpus without that problem when init highmem Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move e820_resource_resources to e820.cYinghai Lu
and make 32-bit resource registration more like 64 bit. also move probe_roms back to setup_32.c Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86 boot: pass E820 memory map entries more than 128 via linked list of ↵Huang, Ying
setup data Because of the size limits of struct boot_params (zero page), the maximum number of E820 memory map entries can be passed to kernel is 128. As pointed by Paul Jackson, there is some machine produced by SGI with so many nodes that the number of E820 memory map entries is more than 128. To enabling Linux kernel on these system, a new setup data type named SETUP_E820_EXT is defined to pass additional memory map entries to Linux kernel. This patch is based on x86/auto-latest branch of git-x86 tree and has been tested on x86_64 and i386 platform. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, mm: use add_highpages_with_active_regions() for high pages init v2Yinghai Lu
use early_node_map to init high pages, so we can remove page_is_ram() and page_is_reserved_early() in the big loop with add_one_highpage also remove page_is_reserved_early(), it is not needed anymore. v2: fix the build of other platforms Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: rename two e820 related functionsYinghai Lu
rename update_memory_range to e820_update_range rename add_memory_region to e820_add_region to make it more clear that they are about e820 map operations. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: keep MP_intsrc_info untouched if we do not update mptableYinghai Lu
Daniel Exner reported IO-APIC enumeration breakage in linux-next. Alexey Starikovskiy found out that it might be related to commit 2944e16b25 "x86: update mptable". use enable_update_mptable to decide if need check before add mp_irqs array. Reported-by: Daniel Exner <webmaster@dragonslave.de> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: clean up reserve_bootmem_generic() and port it to 32-bitYinghai Lu
1. add reserve_bootmem_generic for 32bit 2. change len to unsigned long 3. make early_res_to_bootmem to use it Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: e820 merge parsing of the mem=/memmap= boot parametersYinghai Lu
since we now have 32-bit support for e820_register_active_regions(), we can merge the parsing of the mem=/memmap= boot parameters. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: add flags parameter to reserve_bootmem_generic()Bernhard Walle
This patch adds a 'flags' parameter to reserve_bootmem_generic() like it already has been added in reserve_bootmem() with commit 72a7fe3967dbf86cb34e24fbf1d957fe24d2f246. It also changes all users to use BOOTMEM_DEFAULT, which doesn't effectively change the behaviour. Since the change is x86-specific, I don't think it's necessary to add a new API for migration. There are only 4 users of that function. The change is necessary for the next patch, using reserve_bootmem_generic() for crashkernel reservation. Signed-off-by: Bernhard Walle <bwalle@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branch 'linus' into tmp.x86.mpparse.newIngo Molnar
2008-07-08Merge branch 'x86/irq' into x86/develIngo Molnar
Conflicts: arch/x86/kernel/i8259.c arch/x86/kernel/irqinit_64.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08Merge branches 'x86/mmio', 'x86/delay', 'x86/idle', 'x86/oprofile', ↵Ingo Molnar
'x86/debug', 'x86/ptrace' and 'x86/amd-iommu' into x86/devel
2008-07-08Merge branch 'x86/setup' into x86/develIngo Molnar
2008-07-08Merge branches 'x86/numa-fixes', 'x86/apic', 'x86/apm', 'x86/bitops', ↵Ingo Molnar
'x86/build', 'x86/cleanups', 'x86/cpa', 'x86/cpu', 'x86/defconfig', 'x86/gart', 'x86/i8259', 'x86/intel', 'x86/irqstats', 'x86/kconfig', 'x86/ldt', 'x86/mce', 'x86/memtest', 'x86/pat', 'x86/ptemask', 'x86/resumetrace', 'x86/threadinfo', 'x86/timers', 'x86/vdso' and 'x86/xen' into x86/devel
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