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2011-01-12KVM: cleanup emulate_instructionAndre Przywara1-2/+9
emulate_instruction had many callers, but only one used all parameters. One parameter was unused, another one is now hidden by a wrapper function (required for a future addition anyway), so most callers use now a shorter parameter list. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: move complete_insn_gp() into x86.cAndre Przywara1-0/+2
move the complete_insn_gp() helper function out of the VMX part into the generic x86 part to make it usable by SVM. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: x86: fix CR8 handlingAndre Przywara1-1/+1
The handling of CR8 writes in KVM is currently somewhat cumbersome. This patch makes it look like the other CR register handlers and fixes a possible issue in VMX, where the RIP would be incremented despite an injected #GP. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: SVM: Add xsetbv interceptJoerg Roedel1-0/+2
This patch implements the xsetbv intercept to the AMD part of KVM. This makes AVX usable in a save way for the guest on AVX capable AMD hardware. The patch is tested by using AVX in the guest and host in parallel and checking for data corruption. I also used the KVM xsave unit-tests and they all pass. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: VMX: add module parameter to avoid trapping HLT instructions (v5)Anthony Liguori1-0/+6
In certain use-cases, we want to allocate guests fixed time slices where idle guest cycles leave the machine idling. There are many approaches to achieve this but the most direct is to simply avoid trapping the HLT instruction which lets the guest directly execute the instruction putting the processor to sleep. Introduce this as a module-level option for kvm-vmx.ko since if you do this for one guest, you probably want to do it for all. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: SVM: Implement Flush-By-Asid featureJoerg Roedel1-0/+2
This patch adds the new flush-by-asid of upcoming AMD processors to the KVM-AMD module. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: MMU: retry #PF for softmmuXiao Guangrong1-0/+1
Retry #PF for softmmu only when the current vcpu has the same cr3 as the time when #PF occurs Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: MMU: rename 'no_apf' to 'prefault'Xiao Guangrong1-1/+2
It's the speculative path if 'no_apf = 1' and we will specially handle this speculative path in the later patch, so 'prefault' is better to fit the sense. Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: SVM: Add clean-bits infrastructure codeRoedel, Joerg1-1/+2
This patch adds the infrastructure for the implementation of the individual clean-bits. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: Don't spin on virt instruction faults during rebootAvi Kivity1-2/+6
Since vmx blocks INIT signals, we disable virtualization extensions during reboot. This leads to virtualization instructions faulting; we trap these faults and spin while the reboot continues. Unfortunately spinning on a non-preemptible kernel may block a task that reboot depends on; this causes the reboot to hang. Fix by skipping over the instruction and hoping for the best. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: SVM: Add manipulation functions for DRx interceptsJoerg Roedel1-10/+17
This patch wraps changes to the DRx intercepts of SVM into seperate functions to abstract nested-svm better and prepare the implementation of the vmcb-clean-bits feature. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: SVM: Add manipulation functions for CRx interceptsRoedel, Joerg1-6/+9
This patch wraps changes to the CRx intercepts of SVM into seperate functions to abstract nested-svm better and prepare the implementation of the vmcb-clean-bits feature. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: X86: Introduce generic guest-mode representationJoerg Roedel1-0/+1
This patch introduces a generic representation of guest-mode fpr a vcpu. This currently only exists in the SVM code. Having this representation generic will help making the non-svm code aware of nesting when this is necessary. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Pull extra page fault information into struct x86_exceptionAvi Kivity2-13/+6
Currently page fault cr2 and nesting infomation are carried outside the fault data structure. Instead they are placed in the vcpu struct, which results in confusion as global variables are manipulated instead of passing parameters. Fix this issue by adding address and nested fields to struct x86_exception, so this struct can carry all information associated with a fault. Signed-off-by: Avi Kivity <avi@redhat.com> Tested-by: Joerg Roedel <joerg.roedel@amd.com> Tested-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Push struct x86_exception info the various gva_to_gpa variantsAvi Kivity1-5/+9
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: x86 emulator: make emulator memory callbacks return full exceptionAvi Kivity1-6/+9
This way, they can return #GP, not just #PF. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: x86 emulator: introduce struct x86_exception to communicate faultsAvi Kivity1-3/+8
Introduce a structure that can contain an exception to be passed back to main kvm code. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: MMU: remove 'clear_unsync' parameterXiao Guangrong1-1/+1
Remove it since we can judge it by using sp->unsync Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Add instruction-set-specific exit qualifications to kvm_exit traceAvi Kivity1-0/+1
The exit reason alone is insufficient to understand exactly why an exit occured; add ISA-specific trace parameters for additional information. Because fetching these parameters is expensive on vmx, and because these parameters are fetched even if tracing is disabled, we fetch the parameters via a callback instead of as traditional trace arguments. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: x86 emulator: preserve an operand's segment identityAvi Kivity1-1/+4
Currently the x86 emulator converts the segment register associated with an operand into a segment base which is added into the operand address. This loss of information results in us not doing segment limit checks properly. Replace struct operand's addr.mem field by a segmented_address structure which holds both the effetive address and segment. This will allow us to do the limit check at the point of access. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: MMU: fix apf prefault if nested guest is enabledXiao Guangrong1-0/+1
If apf is generated in L2 guest and is completed in L1 guest, it will prefault this apf in L1 guest's mmu context. Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: remove unused function declarationXiao Guangrong1-1/+0
Remove the declaration of kvm_mmu_set_base_ptes() Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12KVM: handle exit due to INVD in VMXGleb Natapov1-0/+1
Currently the exit is unhandled, so guest halts with error if it tries to execute INVD instruction. Call into emulator when INVD instruction is executed by a guest instead. This instruction is not needed by ordinary guests, but firmware (like OpenBIOS) use it and fail. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: x86: Add missing inline tag to kvm_read_and_reset_pf_reasonJan Kiszka1-1/+1
May otherwise generates build warnings about unused kvm_read_and_reset_pf_reason if included without CONFIG_KVM_GUEST enabled. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Let host know whether the guest can handle async PF in non-userspace ↵Gleb Natapov2-0/+2
context. If guest can detect that it runs in non-preemptable context it can handle async PFs at any time, so let host know that it can send async PF even if guest cpu is not in userspace. Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Inject asynchronous page fault into a PV guest if page is swapped out.Gleb Natapov1-0/+3
Send async page fault to a PV guest if it accesses swapped out memory. Guest will choose another task to run upon receiving the fault. Allow async page fault injection only when guest is in user mode since otherwise guest may be in non-sleepable context and will not be able to reschedule. Vcpu will be halted if guest will fault on the same page again or if vcpu executes kernel code. Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Handle async PF in a guest.Gleb Natapov2-0/+13
When async PF capability is detected hook up special page fault handler that will handle async page fault events and bypass other page faults to regular page fault handler. Also add async PF handling to nested SVM emulation. Async PF always generates exit to L1 where vcpu thread will be scheduled out until page is available. Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM paravirt: Add async PF initialization to PV guest.Gleb Natapov1-0/+6
Enable async PF in a guest if async PF capability is discovered. Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Add PV MSR to enable asynchronous page faults delivery.Gleb Natapov2-0/+6
Guest enables async PF vcpu functionality using this MSR. Reviewed-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM paravirt: Move kvm_smp_prepare_boot_cpu() from kvmclock.c to kvm.c.Gleb Natapov1-0/+1
Async PF also needs to hook into smp_prepare_boot_cpu so move the hook into generic code. Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Retry fault before vmentryGleb Natapov1-1/+3
When page is swapped in it is mapped into guest memory only after guest tries to access it again and generate another fault. To save this fault we can map it immediately since we know that guest is going to access the page. Do it only when tdp is enabled for now. Shadow paging case is more complicated. CR[034] and EFER registers should be switched before doing mapping and then switched back. Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-12KVM: Halt vcpu if page it tries to access is swapped outGleb Natapov1-0/+18
If a guest accesses swapped out memory do not swap it in from vcpu thread context. Schedule work to do swapping and put vcpu into halted state instead. Interrupts will still be delivered to the guest and if interrupt will cause reschedule guest will continue to run another task. [avi: remove call to get_user_pages_noio(), nacked by Linus; this makes everything synchrnous again] Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-01-11xen p2m: clear the old pte when adding a page to m2p_overrideJeremy Fitzhardinge1-2/+2
When adding a page to m2p_override we change the p2m of the page so we need to also clear the old pte of the kernel linear mapping because it doesn't correspond anymore. When we remove the page from m2p_override we restore the original p2m of the page and we also restore the old pte of the kernel linear mapping. Before changing the p2m mappings in m2p_add_override and m2p_remove_override, check that the page passed as argument is valid and return an error if it is not. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-01-11xen: add m2p override mechanismJeremy Fitzhardinge1-3/+13
Add a simple hashtable based mechanism to override some portions of the m2p, so that we can find out the pfn corresponding to an mfn of a granted page. In fact entries corresponding to granted pages in the m2p hold the original pfn value of the page in the source domain that granted it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-01-11Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds5-14/+21
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Fix Moorestown VRTC fixmap placement x86/gpio: Implement x86 gpio_to_irq convert function x86, UV: Fix APICID shift for Westmere processors x86: Use PCI method for enabling AMD extended config space before MSR method x86: tsc: Prevent delayed init if initial tsc calibration failed x86, lapic-timer: Increase the max_delta to 31 bits x86: Fix sparse non-ANSI function warnings in smpboot.c x86, numa: Fix CONFIG_DEBUG_PER_CPU_MAPS without NUMA emulation x86, AMD, PCI: Add AMD northbridge PCI device id for CPU families 12h and 14h x86, numa: Fix cpu to node mapping for sparse node ids x86, numa: Fake node-to-cpumask for NUMA emulation x86, numa: Fake apicid and pxm mappings for NUMA emulation x86, numa: Avoid compiling NUMA emulation functions without CONFIG_NUMA_EMU x86, numa: Reduce minimum fake node size to 32M Fix up trivial conflict in arch/x86/kernel/apic/x2apic_uv_x.c
2011-01-11Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds4-2/+34
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (28 commits) perf session: Fix infinite loop in __perf_session__process_events perf evsel: Support perf_evsel__open(cpus > 1 && threads > 1) perf sched: Use PTHREAD_STACK_MIN to avoid pthread_attr_setstacksize() fail perf tools: Emit clearer message for sys_perf_event_open ENOENT return perf stat: better error message for unsupported events perf sched: Fix allocation result check perf, x86: P4 PMU - Fix unflagged overflows handling dynamic debug: Fix build issue with older gcc tracing: Fix TRACE_EVENT power tracepoint creation tracing: Fix preempt count leak tracepoint: Add __rcu annotation tracing: remove duplicate null-pointer check in skb tracepoint tracing/trivial: Add missing comma in TRACE_EVENT comment tracing: Include module.h in define_trace.h x86: Save rbp in pt_regs on irq entry x86, dumpstack: Fix unused variable warning x86, NMI: Clean-up default_do_nmi() x86, NMI: Allow NMI reason io port (0x61) to be processed on any CPU x86, NMI: Remove DIE_NMI_IPI x86, NMI: Add priorities to handlers ...
2011-01-11x86,percpu: Move out of place 64 bit ops into X86_64 sectionChristoph Lameter1-4/+4
Some operations that operate on 64 bit operands are defined for 32 bit. Move them into the correct section. Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2011-01-11x86: Fix Moorestown VRTC fixmap placementArjan van de Ven1-2/+2
The x86 fixmaps need to be all together... unfortunately the VRTC one was misplaced. This patch makes sure the MRST VRTC fixmap is put prior to the __end_of_permanent_fixed_addresses marker. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> LKML-Reference: <20110111105544.24448.27607.stgit@bob.linux.org.uk> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-11x86/gpio: Implement x86 gpio_to_irq convert functionAlek Du1-4/+1
We need this for x86 MID platforms where GPIO interrupts are used. No special magic is needed so the default 1:1 behaviour will do nicely. Signed-off-by: Alek Du <alek.du@intel.com> Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> LKML-Reference: <20110111105439.24448.69863.stgit@bob.linux.org.uk> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-11x86: Use PCI method for enabling AMD extended config space before MSR methodJan Beulich1-0/+7
While both methods should work equivalently well for the native case, the Xen Dom0 case can't reliably work with the MSR one, since there's no guarantee that the virtual CPUs it has available fully cover all necessary physical ones. As per the suggestion of Robert Richter the patch only adds the PCI method, but leaves the MSR one as a fallback to cover new systems the PCI IDs of which may not have got added to the code base yet. The only change in v2 is the breaking out of the new CPI initialization method into a separate function, as requested by Ingo. Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Robert Richter <robert.richter@amd.com> Cc: Andreas Herrmann3 <Andreas.Herrmann3@amd.com> Cc: Joerg Roedel <joerg.roedel@amd.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> LKML-Reference: <4D2B3FD7020000780002B67D@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-10Merge branch 'stable/generic' of ↵Linus Torvalds2-0/+47
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/generic' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: HVM X2APIC support apic: Move hypervisor detection of x2apic to hypervisor.h
2011-01-10Merge branch 'x86/numa' into x86/urgentIngo Molnar3-8/+11
Merge reason: Topic is ready for upstream. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-09Merge branch 'tip/perf/core' of ↵Ingo Molnar19-53/+136
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/urgent
2011-01-09perf, x86: P4 PMU - Fix unflagged overflows handlingCyrill Gorcunov1-0/+3
Don found that P4 PMU reads CCCR register instead of counter itself (in attempt to catch unflagged event) this makes P4 NMI handler to consume all NMIs it observes. So the other NMI users such as kgdb simply have no chance to get NMI on their hands. Side note: at moment there is no way to run nmi-watchdog together with perf tool. This is because both 'perf top' and nmi-watchdog use same event. So while nmi-watchdog reserves one event/counter for own needs there is no room for perf tool left (there is a way to disable nmi-watchdog on boot of course). Ming has tested this patch with the following results | 1. watchdog disabled | | kgdb tests on boot OK | perf works OK | | 2. watchdog enabled, without patch perf-x86-p4-nmi-4 | | kgdb tests on boot hang | | 3. watchdog enabled, without patch perf-x86-p4-nmi-4 and do not run kgdb | tests on boot | | "perf top" partialy works | cpu-cycles no | instructions yes | cache-references no | cache-misses no | branch-instructions no | branch-misses yes | bus-cycles no | | 4. watchdog enabled, with patch perf-x86-p4-nmi-4 applied | | kgdb tests on boot OK | perf does not work, NMI "Dazed and confused" messages show up | Which means we still have problems with p4 box due to 'unknown' nmi happens but at least it should fix kgdb test cases. Reported-by: Jason Wessel <jason.wessel@windriver.com> Reported-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Don Zickus <dzickus@redhat.com> Acked-by: Lin Ming <ming.m.lin@intel.com> Cc: Stephane Eranian <eranian@google.com> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <4D275E7E.3040903@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-07Merge branch 'for-2.6.38' of ↵Linus Torvalds3-4/+159
git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu * 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (30 commits) gameport: use this_cpu_read instead of lookup x86: udelay: Use this_cpu_read to avoid address calculation x86: Use this_cpu_inc_return for nmi counter x86: Replace uses of current_cpu_data with this_cpu ops x86: Use this_cpu_ops to optimize code vmstat: User per cpu atomics to avoid interrupt disable / enable irq_work: Use per cpu atomics instead of regular atomics cpuops: Use cmpxchg for xchg to avoid lock semantics x86: this_cpu_cmpxchg and this_cpu_xchg operations percpu: Generic this_cpu_cmpxchg() and this_cpu_xchg support percpu,x86: relocate this_cpu_add_return() and friends connector: Use this_cpu operations xen: Use this_cpu_inc_return taskstats: Use this_cpu_ops random: Use this_cpu_inc_return fs: Use this_cpu_inc_return in buffer.c highmem: Use this_cpu_xx_return() operations vmstat: Use this_cpu_inc_return for vm statistics x86: Support for this_cpu_add, sub, dec, inc_return percpu: Generic support for this_cpu_add, sub, dec, inc_return ... Fixed up conflicts: in arch/x86/kernel/{apic/nmi.c, apic/x2apic_uv_x.c, process.c} as per Tejun.
2011-01-07xen: HVM X2APIC supportSheng Yang2-0/+38
This patch is similiar to Gleb Natapov's patch for KVM, which enable the hypervisor to emulate x2apic feature for the guest. By this way, the emulation of lapic would be simpler with x2apic interface(MSR), and faster. [v2: Re-organized 'xen_hvm_need_lapic' per Ian Campbell suggestion] Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-01-07apic: Move hypervisor detection of x2apic to hypervisor.hSheng Yang1-0/+9
Then we can reuse it for Xen later. Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Avi Kivity <avi@redhat.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-01-07x86, NMI: Remove DIE_NMI_IPIDon Zickus1-1/+0
With priorities in place and no one really understanding the difference between DIE_NMI and DIE_NMI_IPI, just remove DIE_NMI_IPI and convert everyone to DIE_NMI. This also simplifies default_do_nmi() a little bit. Instead of calling the die_notifier in both the if and else part, just pull it out and call it before the if-statement. This has the side benefit of avoiding a call to the ioport to see if there is an external NMI sitting around until after the (more frequent) internal NMIs are dealt with. Patch-Inspired-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1294348732-15030-5-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-07x86, NMI: Add priorities to handlersDon Zickus1-0/+20
In order to consolidate the NMI die_chain events, we need to setup the priorities for the die notifiers. I started by defining a bunch of common priorities that can be used by the notifier blocks. Then I modified the notifier blocks to use the newly created priorities. Now that the priorities are straightened out, it should be easier to remove the event DIE_NMI_IPI. Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1294348732-15030-4-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-01-07x86, NMI: Add NMI symbol constants and rename memory parity to PCI SERRHuang Ying1-1/+11
Replace the NMI related magic numbers with symbol constants. Memory parity error is only valid for IBM PC-AT, newer machine use bit 7 (0x80) of 0x61 port for PCI SERR. While memory error is usually reported via MCE. So corresponding function name and kernel log string is changed. But on some machines, PCI SERR line is still used to report memory errors. This is used by EDAC, so corresponding EDAC call is reserved. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1294348732-15030-2-git-send-email-dzickus@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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