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2008-07-22x86: fix pte_flags() to only return flags, fix lguest (updated)Rusty Russell
(Jeremy said: rusty: use PTE_MASK rusty: use PTE_MASK rusty: use PTE_MASK When I asked: jsgf: does that include the NX flag? He responded eloquently: rusty: use PTE_MASK rusty: use PTE_MASK yes, it's the official constant of masking flags out of ptes ) Change a15af1c9ea2750a9ff01e51615c45950bad8221b 'x86/paravirt: add pte_flags to just get pte flags' removed lguest's private pte_flags() in favor of a generic one. Unfortunately, the generic one doesn't filter out the non-flags bits: this results in lguest creating corrupt shadow page tables and blowing up host memory. Since noone is supposed to use the pfn part of pte_flags(), it seems safest to always do the filtering. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-and-morning-tea-spilled-by: Ingo Molnar <mingo@elte.hu>
2008-07-22x86: use setup_clear_cpu_cap with disable_apic, fixYinghai Lu
beauty fix: /proc/cpuinfo will still show apic feature even if we booted up with it disabled. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-21x86: convert Dprintk to pr_debugThomas Gleixner
There are a couple of places where (P)Dprintk is used which is an old compile time enabled printk wrapper. Convert it to the generic pr_debug(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-07-21Merge branch 'x86/paravirt-spinlocks' into x86/for-linusIngo Molnar
2008-07-21Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', ↵Ingo Molnar
'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus
2008-07-21Merge branch 'linus' into xen-64bitIngo Molnar
2008-07-21Merge branch 'linus' into x86/paravirt-spinlocksIngo Molnar
2008-07-21x86: remove extra calling to get ext cpuid levelYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-21x86: use setup_clear_cpu_cap() when disabling the lapicYinghai Lu
... so don't need to call clear_cpu_cap again in early_identify_cpu, and could use cleared_cpu_caps like other places. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-21Merge branch 'linus' into x86/urgentIngo Molnar
2008-07-20x86: KVM guest: make kvm_smp_prepare_boot_cpu() staticAdrian Bunk
This patch makes the needlessly global kvm_smp_prepare_boot_cpu() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20x86: add unknown_nmi_panic kernel parameterSimon Arlott
It's not possible to enable the unknown_nmi_panic sysctl option until init is run. It's useful to be able to panic the kernel during boot too, this adds a parameter to enable this option. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-20x86: add ->pre_time_init to x86_quirksYinghai Lu
so NUMAQ can use that to call numaq_pre_time_init() This allows us to remove a NUMAQ special from arch/x86/kernel/setup.c. (and paves the way to remove the NUMAQ subarch) Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-20x86: extend and use x86_quirks to clean up NUMAQ codeYinghai Lu
add these new x86_quirks methods: int *mpc_record; int (*mpc_apic_id)(struct mpc_config_processor *m); void (*mpc_oem_bus_info)(struct mpc_config_bus *m, char *name); void (*mpc_oem_pci_bus)(struct mpc_config_bus *m); void (*smp_read_mpc_oem)(struct mp_config_oemtable *oemtable, unsigned short oemsize); ... and move NUMAQ related mps table handling to numaq_32.c. also move the call to smp_read_mpc_oem() to smp_read_mpc() directly. Should not change functionality, albeit it would be nice to get it tested on real NUMAQ as well ... Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-20x86: introduce x86_quirksYinghai Lu
introduce x86_quirks array of boot-time quirk methods. No change in functionality intended. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-20x86: improve debug printout: add target bootmem range in early_res_to_bootmem()Yinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: remove arch_get_ram_rangeYinghai Lu
no user now Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-07-18x86: Add a arch directory for x86 under debugfsvenkatesh.pallipadi@intel.com
Add a directory for x86 arch under debugfs. Can be used to accumulate all x86 specific debugfs files. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-07-18i386/xen: add proper unwind annotations to xen_sysenter_targetJan Beulich
Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-07-18x86: reduce force_mwait visibilityJan Beulich
It's not used anywhere outside its single referencing file. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-07-18x86: reduce forbid_dac's visibilityJan Beulich
It's not used anywhere outside its declaring file. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-07-18arch/x86/kernel/cpu/common_64.c: remove double inclusionsAlexander Beregalov
x86: remove double inclusions in arch/x86/kernel/cpu/common_64.c Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86_32: remove redundant KERN_INFOHiroshi Shimamoto
This printk has a KERN_ facility level in the format string. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: introducing asm-x86/traps.hJaswinder Singh
Declaring x86 traps under one hood. Declaring x86 do_traps before defining them. Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18AMD IOMMU: set iommu for device from ACPI code tooJoerg Roedel
The device<->iommu relationship has to be set from the information in the ACPI table too. This patch adds this logic to the driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: robert.richter@amd.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18Merge branch 'linus' into x86/amd-iommuIngo Molnar
2008-07-18x86: consolidate the definition of the force_mwait variableThomas Petazzoni
The force_mwait variable iss defined either in arch/x86/kernel/cpu/amd.c or in arch/x86/kernel/setup_64.c, but it is only initialized and used in arch/x86/kernel/process.c. This patch moves the declaration to arch/x86/kernel/process.c. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: michael@free-electrons.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86 setup.c: cleanup includesAlexander Beregalov
x86: remove double includes in setup.c Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86, intel_cacheinfo: fix use-after-free cache_kobjectAkinobu Mita
This avoids calling kobject_uevent() with cache_kobject that has already been deallocated in an error path. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: traps_xx: modify x86_64 to use _log_lvl variantsAlexander van Heukelum
i386 has show_trace_log_lvl and show_stack_log_lvl, allowing traces to be emitted with log-level annotations. This patch introduces them to x86_64, but log_lvl is only ever set to an empty string. Output of traces is unchanged. i386-chunk is whitespace-only. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: traps_xx: refactor die() like in x86_64Alexander van Heukelum
Make the diff between the traps_32.c and traps_64.c a bit smaller. Change traps_32.c to look more like traps_64.c: - move lock information to file scope - split out oops_begin() and oops_end() from die() - increment nest counter in oops_begin Only whitespace change in traps_64.c No functional changes intended. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86 BIOS interface for RTC on SGI UVRuss Anderson
Real-time code needs to know the number of cycles per second on SGI UV. The information is provided via a run time BIOS call. This patch provides the linux side of that interface. This is the first of several run time BIOS calls to be defined in uv/bios.h and bios_uv.c. Note that BIOS_CALL() is just a stub for now. The bios side is being worked on. Signed-off-by: Russ Anderson <rja@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: I/O APIC: Always report how the timer has been set upMaciej W. Rozycki
Following recent (and less so) issues with the 8254 timer when routed through the I/O or local APIC, always report which configurations have been tried and which one has been set up eventually. This is so that logs posted by people for some other reason can be used as a cross-reference when investigating any possible future problems. The change unifies messages printed on 32-bit and 64-bit platforms and adds trailing newlines (removes leading ones), so that proper log level annotation can be used and any possible interspersed output will not cause a mess. I have chosen to use apic_printk(APIC_QUIET, ...) rather than printk(...) so that the distinction of these messages is maintained making possible future decisions about changes in this area easier. A change posted separately making apic_verbosity unsigned removes any extra code that would otherwise be generated as a result of this design decision. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: APIC: Make apic_verbosity unsignedMaciej W. Rozycki
As a microoptimisation, make apic_verbosity unsigned. This will make apic_printk(APIC_QUIET, ...) expand into just printk(...) with the surrounding condition and a reference to apic_verbosity removed. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: I/O APIC: Include <asm/i8259.h> required by some codeMaciej W. Rozycki
Include <asm/i8259.h> for i8259A_lock used in print_PIC() -- #if-0-ed out by default. The 32-bit version gets it right already. The plan is to enable this code with "apic=debug" eventually. This will aid with debugging strange problems without the need to ask people to apply patches. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: apic_32 - introduce calibrate_APIC_clockCyrill Gorcunov
Introduce calibrate_APIC_clock so it could help in further 32/64bit apic code merging. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: apic_64 - make calibrate_APIC_clock to return error codeCyrill Gorcunov
Make calibration_result to return error and check calibration_result to be sufficient inside calibrate_APIC_clock. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Cc: yhlu.kernel@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18Merge branch 'linus' into x86/cleanupsIngo Molnar
2008-07-18Merge branch 'linus' into x86/paravirt-spinlocksIngo Molnar
Conflicts: arch/x86/kernel/Makefile Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: APIC: remove apic_write_around(); use alternativesMaciej W. Rozycki
Use alternatives to select the workaround for the 11AP Pentium erratum for the affected steppings on the fly rather than build time. Remove the X86_GOOD_APIC configuration option and replace all the calls to apic_write_around() with plain apic_write(), protecting accesses to the ESR as appropriate due to the 3AP Pentium erratum. Remove apic_read_around() and all its invocations altogether as not needed. Remove apic_write_atomic() and all its implementing backends. The use of ASM_OUTPUT2() is not strictly needed for input constraints, but I have used it for readability's sake. I had the feeling no one else was brave enough to do it, so I went ahead and here it is. Verified by checking the generated assembly and tested with both a 32-bit and a 64-bit configuration, also with the 11AP "feature" forced on and verified with gdb on /proc/kcore to work as expected (as an 11AP machines are quite hard to get hands on these days). Some script complained about the use of "volatile", but apic_write() needs it for the same reason and is effectively a replacement for writel(), so I have disregarded it. I am not sure what the policy wrt defconfig files is, they are generated and there is risk of a conflict resulting from an unrelated change, so I have left changes to them out. The option will get removed from them at the next run. Some testing with machines other than mine will be needed to avoid some stupid mistake, but despite its volume, the change is not really that intrusive, so I am fairly confident that because it works for me, it will everywhere. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18x86: use cpu_clear in remove_cpu_from_mapsYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-18Merge branch 'linus' into x86/urgentIngo Molnar
2008-07-18Merge branch 'linus' into x86/stepIngo Molnar
2008-07-18x86: remove arch/x86/kernel/smpcommon_32.cIngo Molnar
Yinghai Lu noticed that arch/x86/kernel/smpcommon_32.c got renamed to arch/x86/kernel/smpcommon.c but the old almost-empty file stayed around. Zap it. Reported-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-17Merge branch 'linus' into xen-64bitIngo Molnar
2008-07-17x86: unify and correct the GDT_ENTRY() macroH. Peter Anvin
Merge the GDT_ENTRY() macro between arch/x86/boot/pm.c and arch/x86/kernel/acpi/sleep.c and put the new one in <asm-x86/segment.h>. While we're at it, correct the bitmasks for the limit and flags. The new version relies on using ULL constants in order to cause type promotion rather than explicit casts; this avoids having to include <linux/types.h> in <asm-x86/segments.h>. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-07-17Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: fix asm/e820.h for userspace inclusion x86: fix numaq_tsc_disable x86: fix kernel_physical_mapping_init() for large x86 systems
2008-07-17Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: ftrace: do not trace library functions ftrace: do not trace scheduler functions ftrace: fix lockup with MAXSMP ftrace: fix merge buglet
2008-07-17x86: fix numaq_tsc_disableYinghai Lu
fix: arch/x86/kernel/numaq_32.c: In function ‘numaq_tsc_disable’: arch/x86/kernel/numaq_32.c:99: warning: ‘return’ with a value, in function returning void Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-17x86 reboot quirks: add Dell Precision WorkStation T5400Ingo Molnar
as reported in: "reboot=bios is mandatory on Dell T5400 server." http://bugzilla.kernel.org/show_bug.cgi?id=11108 add a DMI reboot quirk. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org>
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