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- 18 Jul, 2008 1 commit
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Russ Anderson authored
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>
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- 17 Jul, 2008 1 commit
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Ingo Molnar authored
-tip testing found a bootup hang here: initcall anon_inode_init+0x0/0x130 returned 0 after 0 msecs calling acpi_event_init+0x0/0x57 the bootup should have continued with: initcall acpi_event_init+0x0/0x57 returned 0 after 45 msecs but it hung hard there instead. bisection led to this commit: | commit 5806b81a | Merge: d14c8a68... 6712e299... | Author: Ingo Molnar <mingo@elte.hu> | Date: Mon Jul 14 16:11:52 2008 +0200 | Merge branch 'auto-ftrace-next' into tracing/for-linus turns out that i made this mistake in the merge: ifdef CONFIG_FTRACE # Do not profile debug utilities CFLAGS_REMOVE_tsc_64.o = -pg CFLAGS_REMOVE_tsc_32.o = -pg those two files got unified meanwhile - so the dont-profile annotation got lost. The proper rule is: CFLAGS_REMOVE_tsc.o = -pg i guess this could have been caught sooner if the CFLAGS_REMOVE* kbuild rule aborted the build if it met a target that does not exist anymore? Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 16 Jul, 2008 1 commit
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Ingo Molnar authored
the paravirt-spinlock patches caused a boot hang with this config: http://redhat.com/~mingo/misc/config-Wed_Jul__9_14_47_04_CEST_2008.bad i have bisected it down to: | commit e17b58c2e85bc2ad2afc07fb8d898017c2b75ed1 | Author: Jeremy Fitzhardinge <jeremy@goop.org> | Date: Mon Jul 7 12:07:53 2008 -0700 | | xen: implement Xen-specific spinlocks i.e. applying that patch alone causes the hang. The hang happens in the ftrace self-test: initcall utsname_sysctl_init+0x0/0x19 returned 0 after 0 msecs calling init_sched_switch_trace+0x0/0x4c Testing tracer sched_switch: PASSED initcall init_sched_switch_trace+0x0/0x4c returned 0 after 167 msecs calling init_function_trace+0x0/0x12 Testing tracer ftrace: [hard hang] it should have continued like this: Testing tracer ftrace: PASSED initcall init_function_trace+0x0/0x12 returned 0 after 198 msecs calling init_irqsoff_tracer+0x0/0x14 Testing tracer irqsoff: PASSED initcall init_irqsoff_tracer+0x0/0x14 returned 0 after 3 msecs calling init_mmio_trace+0x0/0x12 initcall init_mmio_trace+0x0/0x12 returned 0 after 0 msecs the problem is that such lowlevel primitives as spinlocks should never be built with -pg (which ftrace does). Marking paravirt.o as non-pg and marking all spinlock ops as always-inline solve the hang. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 12 Jul, 2008 2 commits
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Suresh Siddha authored
x2apic Physical mode support. By default we will use x2apic cluster mode. x2apic physical mode can be selected using "x2apic_phys" boot parameter. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: akpm@linux-foundation.org Cc: arjan@linux.intel.com Cc: andi@firstfloor.org Cc: ebiederm@xmission.com Cc: jbarnes@virtuousgeek.org Cc: steiner@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Suresh Siddha authored
x2apic cluster mode support. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: akpm@linux-foundation.org Cc: arjan@linux.intel.com Cc: andi@firstfloor.org Cc: ebiederm@xmission.com Cc: jbarnes@virtuousgeek.org Cc: steiner@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 11 Jul, 2008 1 commit
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Ingo Molnar authored
Yinghai Lu reported crashes on 64-bit x86: BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 IP: [<ffffffff80253b17>] hrtick_start_fair+0x89/0x173 [...] And with a long session of debugging and a lot of difficulty, tracked it down to this commit: ---------------> 8fbbc4b4 is first bad commit commit 8fbbc4b4 Author: Alok Kataria <akataria@vmware.com> Date: Tue Jul 1 11:43:34 2008 -0700 x86: merge tsc_init and clocksource code <-------------- The problem is that the TSC unification missed these Makefile rules in arch/x86/kernel/Makefile: # Do not profile debug and lowlevel utilities CFLAGS_REMOVE_tsc_64.o = -pg CFLAGS_REMOVE_tsc_32.o = -pg ... CFLAGS_tsc_64.o := $(nostackp) ... which rules make sure that various instrumentation and debugging facilities are disabled for code that might end up in a VDSO - such as the TSC code. Reported-and-bisected-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Conflicts: Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 10 Jul, 2008 3 commits
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Ingo Molnar authored
merge traps_visws.c and apic_visws.c into visws_quirks.c. (no code changed) Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
rename setup_visws.c to visws_quirks.c. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo Molnar authored
this is the big move: flip over VISWS to generic arch support. From this commit on CONFIG_X86_VISWS is just another (default-disabled) option that turns on certain quirks - no other complications. Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 09 Jul, 2008 2 commits
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Alok Kataria authored
Unify the clocksource code. Unify the tsc_init code. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Hecht <dhecht@vmware.com> Cc: Dan Hecht <dhecht@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Alok Kataria authored
Move the basic global variable definitions and sched_clock handling in the common "tsc.c" file. - Unify notsc kernel command line handling for 32 bit and 64bit. - Functional changes for 64bit. - "tsc_disabled" is updated if "notsc" is passed at boottime. - Fallback to jiffies for sched_clock, incase notsc is passed on commandline. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Hecht <dhecht@vmware.com> Cc: Dan Hecht <dhecht@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 08 Jul, 2008 7 commits
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Yinghai Lu authored
use ACPI_NUMA directly and move srat_32.c to mm/ Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Yinghai Lu authored
and let 64 bit use that instead of setup_64.c [ mingo@elte.hu ] x86: build fix fix: arch/x86/kernel/setup.c: In function ‘setup_arch': arch/x86/kernel/setup.c:561: error: implicit declaration of function ‘efi_reserve_early' and: arch/x86/kernel/setup.c:766: error: implicit declaration of function 'init_cpu_to_node' and: arch/x86/kernel/setup.c:676: warning: operation on 'max_pfn_mapped' may be undefined Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Yinghai Lu authored
some functions need to be moved to setup_numa.c after we merge setup32/64.c, some funcs need to be moved back to setup.c Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Yinghai Lu authored
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Yinghai Lu authored
it is only needed for 32bit Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Cliff Wickman authored
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>
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Yinghai Lu authored
... 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>
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- 27 Jun, 2008 2 commits
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Joerg Roedel authored
This patch adds the new amd_iommu.c file to the architecture kernel Makefile for x86. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: Sebastian.Biemueller@amd.com Cc: robert.richter@amd.com Cc: joro@8bytes.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Joerg Roedel authored
This patch adds the source file amd_iommu_init.c to the kernel Makefile for the x86 architecture. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: iommu@lists.linux-foundation.org Cc: bhavna.sarathy@amd.com Cc: Sebastian.Biemueller@amd.com Cc: robert.richter@amd.com Cc: joro@8bytes.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 24 Jun, 2008 1 commit
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Gerd Hoffmann authored
This patch adds structs for the paravirt clocksource ABI used by both xen and kvm (pvclock-abi.h). It also adds some helper functions to read system time and wall clock time from a paravirtual clocksource (pvclock.[ch]). They are based on the xen code. They are enabled using CONFIG_PARAVIRT_CLOCK. Subsequent patches of this series will put the code in use. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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- 05 Jun, 2008 1 commit
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Huang, Ying authored
This patch extracts the common part of head32.c and head64.c into head.c. Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: andi@firstfloor.org Cc: mingo@redhat.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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- 03 Jun, 2008 1 commit
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Hiroshi Shimamoto authored
It looks good to move bugs_64.c to cpu/bugs_64.c. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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- 25 May, 2008 2 commits
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Cyrill Gorcunov authored
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: hpa@zytor.com Cc: mingo@redhat.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Yinghai Lu authored
remove the duplicated copy of these functions. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 24 May, 2008 6 commits
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Thomas Gleixner authored
The leftovers of the i8259 unification have nothing to do with i8259 at all. They contain interrupt init code and the i8259_xx name is just misleading now. Rename them to irqinit_32/64.c Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Pavel Machek authored
Make conversion of i8259 very mechanical -- i8259 was generated by diff -D, with too different parts left in i8259_32 and i8259_64.c. Only "by hand" changes were removal of #ifdef from middle of the comment (prevented compilation) and removal of one static to allow splitting into files. Of course, it will need some cleanups now, and those will follow. Signed-of-by: Pavel Machek <pavel@suse.cz>
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Thomas Gleixner authored
The leftovers of the i8259 unification have nothing to do with i8259 at all. They contain interrupt init code and the i8259_xx name is just misleading now. Rename them to initirq_32/64.c Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Pavel Machek authored
Make conversion of i8259 very mechanical -- i8259 was generated by
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Pekka Paalanen authored
Signed-off-by: Pekka Paalanen <pq@iki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Pekka Paalanen authored
Mmiotrace is a tool for trapping memory mapped IO (MMIO) accesses within the kernel. It is used for debugging and especially for reverse engineering evil binary drivers. Mmiotrace works by wrapping the ioremap family of kernel functions and marking the returned pages as not present. Access to the IO memory triggers a page fault, which will be handled by mmiotrace's custom page fault handler. This will single-step the faulted instruction with the MMIO page marked as present. Access logs are directed to user space via relay and debug_fs. This page fault approach is necessary, because binary drivers have readl/writel etc. calls inlined and therefore extremely difficult to trap with with e.g. kprobes. This patch depends on the custom page fault handlers patch. Signed-off-by: Pekka Paalanen <pq@iki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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- 23 May, 2008 2 commits
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Steven Rostedt authored
This patch removes the Makefile turd and uses the nice CFLAGS_REMOVE macro in the x86/kernel directory. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Steven Rostedt authored
This patch adds a feature to dynamically replace the ftrace code with the jmps to allow a kernel with ftrace configured to run as fast as it can without it configured. The way this works, is on bootup (if ftrace is enabled), a ftrace function is registered to record the instruction pointer of all places that call the function. Later, if there's still any code to patch, a kthread is awoken (rate limited to at most once a second) that performs a stop_machine, and replaces all the code that was called with a jmp over the call to ftrace. It only replaces what was found the previous time. Typically the system reaches equilibrium quickly after bootup and there's no code patching needed at all. e.g. call ftrace /* 5 bytes */ is replaced with jmp 3f /* jmp is 2 bytes and we jump 3 forward */ 3: When we want to enable ftrace for function tracing, the IP recording is removed, and stop_machine is called again to replace all the locations of that were recorded back to the call of ftrace. When it is disabled, we replace the code back to the jmp. Allocation is done by the kthread. If the ftrace recording function is called, and we don't have any record slots available, then we simply skip that call. Once a second a new page (if needed) is allocated for recording new ftrace function calls. A large batch is allocated at boot up to get most of the calls there. Because we do this via stop_machine, we don't have to worry about another CPU executing a ftrace call as we modify it. But we do need to worry about NMI's so all functions that might be called via nmi must be annotated with notrace_nmi. When this code is configured in, the NMI code will not call notrace. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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- 07 May, 2008 1 commit
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Stas Sergeev authored
fix pcspkr dependancies: make the pcspkr platform drivers to depend on a platform device, and not the other way around. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Dmitry Torokhov <dtor@mail.ru> CC: Vojtech Pavlik <vojtech@suse.cz> CC: Michael Opdenacker <michael-lists@free-electrons.com> [fixed for 2.6.26-rc1 by tiwai] Signed-off-by: Takashi Iwai <tiwai@suse.de>
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- 30 Apr, 2008 1 commit
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Ingo Molnar authored
the 'reboot_force' flag is a notion that non-PC subarchitectures do not have. also, unify the X86_BIOS_REBOOT option between 32-bit and 64-bit and get rid of a few unnecessary Kconfig and Makefile complications that way. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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- 29 Apr, 2008 1 commit
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Andres Salomon authored
This adds support for OLPC XO hardware. Open Firmware on XOs don't contain the VSA, so it is necessary to emulate the PCI BARs in the kernel. This also adds functionality for running EC commands, and a CONFIG_OLPC. A number of OLPC drivers depend upon CONFIG_OLPC. olpc_ec_timeout is a hack to work around Embedded Controller bugs. [akpm@linux-foundation.org: build fix] [akpm@linux-foundation.org: geode_has_vsa build fix] [akpm@linux-foundation.org: olpc_register_battery_callback doesn't exist] Signed-off-by: Andres Salomon <dilinger@debian.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de> Cc: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 27 Apr, 2008 2 commits
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Marcelo Tosatti authored
Add basic KVM paravirt support. Avoid vm-exits on IO delays. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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Glauber de Oliveira Costa authored
This is the guest part of kvm clock implementation It does not do tsc-only timing, as tsc can have deltas between cpus, and it did not seem worthy to me to keep adjusting them. We do use it, however, for fine-grained adjustment. Other than that, time comes from the host. [randy dunlap: add missing include] [randy dunlap: disallow on Voyager or Visual WS] Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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- 26 Apr, 2008 1 commit
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Yinghai Lu authored
Separate mmconf for fam10h out from setup_64.c Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 19 Apr, 2008 1 commit
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Glauber Costa authored
The code in pci-dma_{32,64}.c are now sufficiently close to each other. We merge them in pci-dma.c. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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