- 30 Jan, 2008 40 commits
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Yinghai Lu authored
Signed-off-by:
Yinghai Lu <yinghai.lu@sun.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Mike Travis authored
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Yinghai Lu authored
Signed-off-by:
Yinghai Lu <yinghai@sun.com> Signed-off-by:
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Yinghai Lu authored
when MTRRs are not covering the whole e820 table, we need to trim the RAM and need to update e820. reuse some code on 64-bit as well. here need to add early_get_cap and use it in early_cpu_detect, and move mtrr_bp_init early. The code successfully trimmed the memory map on Justin's system: from: [ 0.000000] BIOS-e820: 0000000100000000 - 000000022c000000 (usable) to: [ 0.000000] modified: 0000000100000000 - 0000000228000000 (usable) [ 0.000000] modified: 0000000228000000 - 000000022c000000 (reserved) According to Justin it makes quite a difference: | When I boot the box without any trimming it acts like a 286 or 386, | takes about 10 minutes to boot (using raptor disks). Signed-off-by:
Justin Piszcz <jpiszcz@lucidpixels.com> Signed-off-by:
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Ingo Molnar authored
fix kconfig text and make DEBUG_RODATA default. this helps debugging quite a bit. Signed-off-by:
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Jan Engelhardt authored
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Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by:
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Eduardo Pereira Habkost authored
With this, the paravirt_ops code can be enabled on x86_64 also. Each guest implementation (Xen, VMI, lguest) now depends on X86_32. The dependencies can be dropped for each one when they start to support x86_64. Signed-off-by:
Eduardo Habkost <ehabkost@redhat.com> Signed-off-by:
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Eduardo Pereira Habkost authored
This will allow people to enable the paravirt_ops code even when no guest support is enabled, for broader testing of the paravirt_ops code. Signed-off-by:
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Andi Kleen authored
ibcs2 support has never been supported on 2.6 kernels as far as I know, and if it has it must have been an external patch. Anyways, if anybody applies an external patch they could as well readd the ibcs checking code to the ELF loader in the same patch. But there is no reason to keep this code running in all Linux kernels. This will save at least two strcmps each ELF execution. No deprecation period because it could not have been used anyway. Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Bernhard Walle authored
the previous patch in the old RTC driver. It also removes the direct rtc_interrupt() call from arch/x86/kernel/hpetc.c so that there's finally no (code) dependency to CONFIG_RTC in arch/x86/kernel/hpet.c. Because of this, it's possible to compile the drivers/char/rtc.ko driver as module and still use the HPET emulation functionality. This is also expressed in Kconfig. Signed-off-by:
Bernhard Walle <bwalle@suse.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Robert Picco <Robert.Picco@hp.com> Signed-off-by:
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Bernhard Walle authored
enabled, then interrupts don't work for the rtc-cmos driver which results in RTC_AIE*, RTC_PIE* and RTC_ALM being unusable. This affects hwclock from util-linux-ng at least on i386 since that uses RTC_PIE_ON. (For x86-64, a polling method is used for unknown reasons.) This patch series now 1. export the functions from arch/x86/kernel/hpet.c that the old char/rtc driver uses to work around that problem, 2. makes it possible to compile the old rtc driver as module, while still having CONFIG_HPET_EMULATE_RTC enabled and 3. makes use of the exported functions in (1) in the new rtc-cmos driver. This patch: This patch makes the RTC emulation functions in arch/x86/kernel/hpet.c usable for kernel modules. It - exports the functions (EXPORT_SYMBOL_GPL()), - adds an interface to register the interrupt callback function instead of using only a fixed callback function and - replaces the rtc_get_rtc_time() function which depends on CONFIG_RTC with a call to get_rtc_time() which is defined in include/asm-generic/rtc.h. The only dependency to CONFIG_RTC is the call to rtc_interrupt() which is removed by the next patch. After this, there's no (code) dependency of this functions to CONFIG_RTC=y any more. Signed-off-by: -
Sam Ravnborg authored
fix: > WARNING: vmlinux.o(.data+0x4): Section mismatch: reference to .init.text:lguest_entry (between 'subarch_entries' and 'stack_start') Signed-off-by:
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Ian Campbell authored
I am preparing to convert the boot time page table to the kernels native format. To achieve that I need to enable PAE. Enabling PSE and the no execute bit would not hurt. So this patch modifies the boot cpu path to execute all of the kernels enable code if and only if we have the proper bits set in mmu_cr4_features. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Mika Penttilä <mika.penttila@kolumbus.fi> Signed-off-by:
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Ian Campbell authored
Currently in head_32.S there are two ways we test to see if we are the boot cpu. By looking at %ebx and by looking at the static variable ready. When changing things around I have found that it gets tricky to preserve %ebx. So this patch just switches head.S over to the more reliable test of always using ready. Hopefully later we can kill these tests entirely. Signed-off-by:
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travis@sgi.com authored
Change the size of node ids for X86_64 from u8 to s16 to accomodate more than 32k nodes and allow for NUMA_NO_NODE (-1) to be sign extended to int. Cc: David Rientjes <rientjes@google.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
Mike Travis <travis@sgi.com> Reviewed-by:
Christoph Lameter <clameter@sgi.com> Signed-off-by:
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Mel Gorman authored
The FLATMEM memory model references a global mem_map and max_mapnr. This is incompatible with how memory models used for NUMA view the world. Builds fail if FLATMEM && NUMA are set on x86. This patch forbids that combination of config items. This is consistent with x86_64 enforcements. Signed-off-by:
Mel Gorman <mel@csn.ul.ie> Signed-off-by:
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Mel Gorman authored
The DISCONTIG memory model on x86 32 bit uses a remap allocator early in boot. The objective is that portions of every node are mapped in to the kernel virtual area (KVA) in place of ZONE_NORMAL so that node-local allocations can be made for pgdat and mem_map structures. With SPARSEMEM, the amount that is set aside is insufficient for all the mem_maps to be allocated. During the boot process, it falls back to using the bootmem allocator. This breaks assumptions that SPARSEMEM makes about the layout of the mem_map in memory and results in a VM_BUG_ON triggering due to pfn_to_page() returning garbage values. This patch only enables the remap allocator for use with DISCONTIG. Without SRAT support, a compile-error occurs because ACPI table parsing functions are only available in x86-64. This patch also adds no-op stubs and prints a warning message. What likely needs to be done is sharing the table parsing functions between 32 and 64 bit if they are compatible. Signed-off-by:
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Harvey Harrison authored
Small fomatting fixes to 64-bit as well, trailing whitespace and extra semicolon, also move the ifdefs for CONFIG_KALLSYMS into the function itself. Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
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Mike Travis authored
call early_cpu_to_node() since per_cpu(cpu_to_node_map) might not be setup yet. I also had to export x86_cpu_to_node_map_early_ptr because of some calls from the network code to numa_node_id(): net/ipv4/netfilter/arp_tables.c: net/ipv4/netfilter/ip_tables.c: net/ipv4/netfilter/ip_tables.c: Signed-off-by:
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Alan Cox authored
We are driving a motherboard port so use a 2uS explicit delay at this point. Signed-off-by:
Alan Cox <alan@redhat.com> Signed-off-by:
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Sam Ravnborg authored
additional section for .init.text appending a number. A side effect of this was a section mismatch warning because modpost did not recognize a .init.text section named .init.text.1: WARNING: vmlinux.o(.text.head+0x247): Section mismatch: reference to .init.text.1:start_kernel (between 'is386' and 'check_x87') Fix this by hardcoding the "ax" in the pushsection. Thanks to Torlaf for reporting this. Alan Modra provided the hint that made me able to locate the root cause of this warning. And Mike Frysinger told me how to properly fix it using __INIT/__FINIT. Fix following Section mismatch warning in addition: WARNING: vmlinux.o(.text+0x14c8): Section mismatch: reference to .init.data:vsyscall_int80_start (between 'fiddle_vdso' and 'xen_setup_features') fiddle_vdso was only used from a __init function - so declare it __init. Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: WANG Cong <xiyou.wangcong@gmail.com> Cc: Toralf Förster <toralf.foerster@gmx.de> Signed-off-by:
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Glauber de Oliveira Costa authored
export __supported_pte_mask variable as GPL symbol. lguest is a user of it. Signed-off-by:
Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by:
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Glauber de Oliveira Costa authored
Exporrt check_tsc_unstable function as GPL symbol. lguest is a user of it. Signed-off-by:
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Harvey Harrison authored
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Harvey Harrison authored
One of the generated files was missed in gitignore. Signed-off-by:
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Ingo Molnar authored
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Ingo Molnar authored
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Yinghai Lu authored
sparsemem is only one supported, so could remove FLAT_NODE_MEM related, that is only needed !SPARSEMEM Signed-off-by:
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Ingo Molnar authored
these bugs are harder to find than they seem, a stackdump helps. make it dependent on CONFIG_DEBUG_SHIRQ so that people can turn it off if it annoys them. Signed-off-by:
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Ingo Molnar authored
An older binutils bug caused us to not fix up alternatives. This problem involved mutex.c but we dont do lockdep section tricks there anymore, so this workaround is moot. Keep the printk nevertheless, just in case ... We can remove that later on. Signed-off-by:
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Ingo Molnar authored
add warning to check_tsc_warp() - if get_cycles() does not progress. Signed-off-by:
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Ingo Molnar authored
100 million max # of loops is a bit too much - reduce it to 10 million. Signed-off-by:
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Jan Engelhardt authored
x86: remove unneeded casts Signed-off-by:
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Harvey Harrison authored
Use v8086_mode inline in fault_32.c, no functional change also ifdef the section for 32-bit only and add to fault_64.c Signed-off-by:
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Ingo Molnar authored
dont crash survivable situations. Signed-off-by:
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travis@sgi.com authored
Provide a means to trap usages of per_cpu map variables before they are setup. Define CONFIG_DEBUG_PER_CPU_MAPS to activate. Signed-off-by:
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travis@sgi.com authored
Change static bios_cpu_apicid array to a per_cpu data variable. This includes using a static array used during initialization similar to the way x86_cpu_to_apicid[] is handled. There is one early use of bios_cpu_apicid in apic_is_clustered_box(). The other reference in cpu_present_to_apicid() is called after smp_set_apicids() has setup the percpu version of bios_cpu_apicid. Signed-off-by:
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Mike Travis authored
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travis@sgi.com authored
Change the following static arrays sized by NR_CPUS to per_cpu data variables: char cpu_to_node_map[NR_CPUS]; fixup: - Split cpu_to_node function into "early" and "late" versions so that x86_cpu_to_node_map_early_ptr is not EXPORT'ed and the cpu_to_node inline function is more streamlined. - This also involves setting up the percpu maps as early as possible. - Fix X86_32 NUMA build errors that previous version of this patch caused. V2->V3: - add early_cpu_to_node function to keep cpu_to_node efficient - move and rename smp_set_apicids() to setup_percpu_maps() - call setup_percpu_maps() as early as possible V1->V2: - Removed extraneous casts - Fix !NUMA builds with '#ifdef CONFIG_NUMA" Signed-off-by: -
Andi Kleen authored
Add a generic option to clear any cpuid bit. I added it because it was very easy to add with the new generic cpuid disable bitmap and perhaps it will be useful in the future. Signed-off-by:
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