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2008-07-08x86: move reservetop and vmalloc parsing to pgtable_32.cYinghai Lu
also change reserve_top_address to __init attibute Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move find_max_low_pfn to init_32.cYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move boot_params declaring to setup.cYinghai Lu
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 elfcorehdr parsing to setup.cYinghai 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: remove two duplicated funcs in setup_32.cYinghai Lu
early_cpu_init is declared in processor.h memory_setup is defined in e820.c Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: merge setup64.c into common_64.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: remove some acpi ifdefs in setup_32/64Yinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: clean up init_amd()Yinghai Lu
1. move out calling of check_enable_amd_mmconf_dmi out of setup_64.c put it into init_amd(), so don't need to make extra dmi check for system with other cpus. 2. 15 --> 0xf Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.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>
2008-07-08xen: set max_pfn_mappedJeremy Fitzhardinge
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: the arch/x86 maintainers <x86@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08xen: reserve ISA space in e820 mapJeremy Fitzhardinge
[ TODO: release the underlying memory back to Xen. ] Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: the arch/x86 maintainers <x86@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08xen: reserve Xen-specific memory in e820 mapJeremy Fitzhardinge
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: the arch/x86 maintainers <x86@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08RFC x86: try to remove arch_get_ram_rangeYinghai Lu
want to remove arch_get_ram_range, and use early_node_map instead. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: fix sleep.c build errorIngo Molnar
fix: arch/x86/kernel/acpi/sleep.c: In function ‘acpi_save_state_mem': arch/x86/kernel/acpi/sleep.c:75: error: ‘stack_start' undeclared (first use in this function) arch/x86/kernel/acpi/sleep.c:75: error: (Each undeclared identifier is reported only once arch/x86/kernel/acpi/sleep.c:75: error: for each function it appears in.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: take load_sp0 out of smpboot.cGlauber Costa
there's no particular reason to do load_sp0 in different places for i386 and x86_64. They should all be in cpu_init. Right now, cpu_init itself is not integrated, but with this patch, the code becomes closer to each other, making in easier to integrate when the time comes. Furthermore, although doing it in do_boot_cpu for x86_64 is fine, since it's only a copy, load_sp0 should be executed in the cpu it refers to anyway. Signed-off-by: Glauber Costa <gcosta@redhat.com> 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: remove cpu from mapsGlauber Costa
during cpu disable, take cpus out of all maps in i386, instead of just the online map. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: change naming to match x86_64Glauber Costa
Change unmap_cpu_to_logical_apicid to numa_remove_cpu. Besides being shorter, it is the same name x86_64 uses. We can save an ifdef in the code this way. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: provide connect_bsp_APIC for x86_64Glauber Costa
Although it is not really needed, we provide it to get closer to i386. ifdefs around it are removed in smpboot.c 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: remove ifdef from steppingGlauber Costa
The stepping won't affect x86_64, since there are not x86_64 k7's or pentiums. So, although it adds to the binary size, remove the ifdef for smoother integration Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: clearing io_apic harmless for x86_64Glauber Costa
so remove ifdef. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: boot secondary cpus through initial_codeGlauber Costa
remove "initialize_secondary". Boot both architectures via initial_code. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: use initial_code for i386Glauber Costa
x86_64 jumps to whatever is written in "initial_code" symbol, instead of a fixed address. Do it for i386 too. It will allow us to integrate more of the smp boot code. 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: don't use gdt_page openly.Glauber Costa
There's a macro available for that. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: use stack_start in x86_64Glauber Costa
call x86_64's init_rsp stack_start, just as i386 does. Put a zeroed stack segment for consistency. With this, we can eliminate one ugly ifdef in smpboot.c. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08build: add __page_aligned_data and __page_aligned_bssJeremy Fitzhardinge
Making a variable page-aligned by using __attribute__((section(".data.page_aligned"))) is fragile because if sizeof(variable) is not also a multiple of page size, it leaves variables in the remainder of the section unaligned. This patch introduces two new qualifiers, __page_aligned_data and __page_aligned_bss to set the section *and* the alignment of variables. This makes page-aligned variables more robust because the linker will make sure they're aligned properly. Unfortunately it requires *all* page-aligned data to use these macros... 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, SGI UV: uv_ptc_proc_write fixCliff Wickman
Someone could write 0 bytes to /proc/sgi_uv/ptc_statistics, causing optstr[count - 1] = '\0'; to write to who-knows-where. (Andi Kleen noticed this need from a patch I sent for similar code in the ia64 world (sn2_ptc_proc_write()).) (count less than zero is not possible here, as count is unsigned) Signed-off-by: Cliff Wickman <cpw@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, SGI UV: TLB shootdown using broadcast assist unit, v6Cliff Wickman
v6: 6/19 close the security hole in uv_ptc_proc_write()) > Found a potential security hole while doing that: > static ssize_t uv_ptc_proc_write(struct file *file, const char __user *user, > size_t count, loff_t *data) > if (copy_from_user(optstr, user, count)) > return -EFAULT; > > is count guaranteed to never be larger than 64? is fixed below. It adds tlb_uv.o to the Makefile. Signed-off-by: Cliff Wickman <cpw@sgi.com> Cc: mingo@elte.hu Signed-off-by: Ingo Molnar <mingo@elte.hu>
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 unit, fixIngo Molnar
fix: arch/x86/kernel/tlb_uv.c: In function ‘uv_table_bases_init': arch/x86/kernel/tlb_uv.c:612: error: ‘bau_tabsp' undeclared (first use in this function) arch/x86/kernel/tlb_uv.c:612: error: (Each undeclared identifier is reported only once arch/x86/kernel/tlb_uv.c:612: error: for each function it appears in.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08SGI UV: clean up arch/x86/kernel/tlb_uv.cIngo Molnar
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
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