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* KVM: Fix cpuid iteration on multiple leaves per eacNitin A Kamble2008-12-31
| | | | | | | | | | | | | | | | | | The code to traverse the cpuid data array list for counting type of leaves is currently broken. This patches fixes the 2 things in it. 1. Set the 1st counting entry's flag KVM_CPUID_FLAG_STATE_READ_NEXT. Without it the code will never find a valid entry. 2. Also the stop condition in the for loop while looking for the next unflaged entry is broken. It needs to stop when it find one matching entry; and in the case of count of 1, it will be the same entry found in this iteration. Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Fix cpuid leaf 0xb loop terminationNitin A Kamble2008-12-31
| | | | | | | | | For cpuid leaf 0xb the bits 8-15 in ECX register define the end of counting leaf. The previous code was using bits 0-7 for this purpose, which is a bug. Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: MMU: Fix aliased gfns treated as unaliasedIzik Eidus2008-12-31
| | | | | | | | | | | Some areas of kvm x86 mmu are using gfn offset inside a slot without unaliasing the gfn first. This patch makes sure that the gfn will be unaliased and add gfn_to_memslot_unaliased() to save the calculating of the gfn unaliasing in case we have it unaliased already. Signed-off-by: Izik Eidus <ieidus@redhat.com> Acked-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Enable Function Level Reset for assigned deviceSheng Yang2008-12-31
| | | | | | | | | | | | | | | | | | Ideally, every assigned device should in a clear condition before and after assignment, so that the former state of device won't affect later work. Some devices provide a mechanism named Function Level Reset, which is defined in PCI/PCI-e document. We should execute it before and after device assignment. (But sadly, the feature is new, and most device on the market now don't support it. We are considering using D0/D3hot transmit to emulate it later, but not that elegant and reliable as FLR itself.) [Update: Reminded by Xiantao, execute FLR after we ensure that the device can be assigned to the guest.] Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Handle mmio emulation when guest state is invalidGuillaume Thouvenin2008-12-31
| | | | | | | | | | | If emulate_invalid_guest_state is enabled, the emulator is called when guest state is invalid. Until now, we reported an mmio failure when emulate_instruction() returned EMULATE_DO_MMIO. This patch adds the case where emulate_instruction() failed and an MMIO emulation is needed. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: allow emulator to adjust rip for emulated pio instructionsGuillaume Thouvenin2008-12-31
| | | | | | | | | | | | | If we call the emulator we shouldn't call skip_emulated_instruction() in the first place, since the emulator already computes the next rip for us. Thus we move ->skip_emulated_instruction() out of kvm_emulate_pio() and into handle_io() (and the svm equivalent). We also replaced "return 0" by "break" in the "do_io:" case because now the shadow register state needs to be committed. Otherwise eip will never be updated. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: SVM: Set the 'busy' flag of the TR selectorAmit Shah2008-12-31
| | | | | | | | The busy flag of the TR selector is not set by the hardware. This breaks migration from amd hosts to intel hosts. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: SVM: Set the 'g' bit of the cs selector for cross-vendor migrationAmit Shah2008-12-31
| | | | | | | | | The hardware does not set the 'g' bit of the cs selector and this breaks migration from amd hosts to intel hosts. Set this bit if the segment limit is beyond 1 MB. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: Fix typo in function nameAmit Shah2008-12-31
| | | | | | | get_segment_descritptor_dtable() contains an obvious type. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: Optimize NMI watchdog deliveryJan Kiszka2008-12-31
| | | | | | | | | | As suggested by Avi, this patch introduces a counter of VCPUs that have LVT0 set to NMI mode. Only if the counter > 0, we push the PIT ticks via all LAPIC LVT0 lines to enable NMI watchdog support. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: Fix and refactor NMI watchdog emulationJan Kiszka2008-12-31
| | | | | | | | | | | | | This patch refactors the NMI watchdog delivery patch, consolidating tests and providing a proper API for delivering watchdog events. An included micro-optimization is to check only for apic_hw_enabled in kvm_apic_local_deliver (the test for LVT mask is covering the soft-disabled case already). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Add decode entries for 0x04 and 0x05 opcodes (add acc, imm)Guillaume Thouvenin2008-12-31
| | | | | | | | Add decode entries for 0x04 and 0x05 (ADD) opcodes, execution is already implemented. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Move private memory slot positionSheng Yang2008-12-31
| | | | | | | | | | | PCI device assignment would map guest MMIO spaces as separate slot, so it is possible that the device has more than 2 MMIO spaces and overwrite current private memslot. The patch move private memory slot to the top of userspace visible memory slots. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: MMU: Extend kvm_mmu_page->slot_bitmap sizeSheng Yang2008-12-31
| | | | | | | | Otherwise set_bit() for private memory slot(above KVM_MEMORY_SLOTS) would corrupted memory in 32bit host. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Clean up kvm_x86_emulate.hSheng Yang2008-12-31
| | | | | | | Remove one left improper comment of removed CR2. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Enable MTRR for EPTSheng Yang2008-12-31
| | | | | | | | The effective memory type of EPT is the mixture of MSR_IA32_CR_PAT and memory type field of EPT entry. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Add local get_mtrr_type() to support MTRRSheng Yang2008-12-31
| | | | | | | For EPT memory type support. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Add PAT support for EPTSheng Yang2008-12-31
| | | | | | | | | | | GUEST_PAT support is a new feature introduced by Intel Core i7 architecture. With this, cpu would save/load guest and host PAT automatically, for EPT memory type in guest depends on MSR_IA32_CR_PAT. Also add save/restore for MSR_IA32_CR_PAT. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Improve MTRR structureSheng Yang2008-12-31
| | | | | | | As well as reset mmu context when set MTRR. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* x86: Export some definition of MTRRSheng Yang2008-12-31
| | | | | | | For KVM can reuse the type define, and need them to support shadow MTRR. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* x86: Rename mtrr_state struct and macro namesSheng Yang2008-12-31
| | | | | | | Prepare for exporting them. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: call kvm_arch_vcpu_reset() instead of the kvm_x86_ops callbackGleb Natapov2008-12-31
| | | | | | | | Call kvm_arch_vcpu_reset() instead of directly using arch callback. The function does additional things. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: work around lacking VNMI supportJan Kiszka2008-12-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Older VMX supporting CPUs do not provide the "Virtual NMI" feature for tracking the NMI-blocked state after injecting such events. For now KVM is unable to inject NMIs on those CPUs. Derived from Sheng Yang's suggestion to use the IRQ window notification for detecting the end of NMI handlers, this patch implements virtual NMI support without impact on the host's ability to receive real NMIs. The downside is that the given approach requires some heuristics that can cause NMI nesting in vary rare corner cases. The approach works as follows: - inject NMI and set a software-based NMI-blocked flag - arm the IRQ window start notification whenever an NMI window is requested - if the guest exits due to an opening IRQ window, clear the emulated NMI-blocked flag - if the guest net execution time with NMI-blocked but without an IRQ window exceeds 1 second, force NMI-blocked reset and inject anyway This approach covers most practical scenarios: - succeeding NMIs are seperated by at least one open IRQ window - the guest may spin with IRQs disabled (e.g. due to a bug), but leaving the NMI handler takes much less time than one second - the guest does not rely on strict ordering or timing of NMIs (would be problematic in virtualized environments anyway) Successfully tested with the 'nmi n' monitor command, the kgdbts testsuite on smp guests (additional patches required to add debug register support to kvm) + the kernel's nmi_watchdog=1, and a Siemens- specific board emulation (+ guest) that comes with its own NMI watchdog mechanism. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Provide support for user space injected NMIsJan Kiszka2008-12-31
| | | | | | | | | | | | | This patch adds the required bits to the VMX side for user space injected NMIs. As with the preexisting in-kernel irqchip support, the CPU must provide the "virtual NMI" feature for proper tracking of the NMI blocking state. Based on the original patch by Sheng Yang. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: Support for user space injected NMIsJan Kiszka2008-12-31
| | | | | | | | | | | | Introduces the KVM_NMI IOCTL to the generic x86 part of KVM for injecting NMIs from user space and also extends the statistic report accordingly. Based on the original patch by Sheng Yang. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Kick NMI receiving VCPUJan Kiszka2008-12-31
| | | | | | | | Kick the NMI receiving VCPU in case the triggering caller runs in a different context. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: VCPU with pending NMI is runnabledJan Kiszka2008-12-31
| | | | | | | Ensure that a VCPU with pending NMIs is considered runnable. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: Enable NMI Watchdog via in-kernel PIT sourceJan Kiszka2008-12-31
| | | | | | | | | | | | | LINT0 of the LAPIC can be used to route PIT events as NMI watchdog ticks into the guest. This patch aligns the in-kernel irqchip emulation with the user space irqchip with already supports this feature. The trick is to route PIT interrupts to all LAPIC's LVT0 lines. Rebased and slightly polished patch originally posted by Sheng Yang. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: fix real-mode NMI supportJan Kiszka2008-12-31
| | | | | | | | Fix NMI injection in real-mode with the same pattern we perform IRQ injection. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: refactor IRQ and NMI window enablingJan Kiszka2008-12-31
| | | | | | | | | | | | do_interrupt_requests and vmx_intr_assist go different way for achieving the same: enabling the nmi/irq window start notification. Unify their code over enable_{irq|nmi}_window, get rid of a redundant call to enable_intr_window instead of direct enable_nmi_window invocation and unroll enable_intr_window for both in-kernel and user space irq injection accordingly. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: refactor/fix IRQ and NMI injectability determinationJan Kiszka2008-12-31
| | | | | | | | | | | | | | | | There are currently two ways in VMX to check if an IRQ or NMI can be injected: - vmx_{nmi|irq}_enabled and - vcpu.arch.{nmi|interrupt}_window_open. Even worse, one test (at the end of vmx_vcpu_run) uses an inconsistent, likely incorrect logic. This patch consolidates and unifies the tests over {nmi|interrupt}_window_open as cache + vmx_update_window_states for updating the cache content. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: Reset pending/inject NMI state on CPU resetJan Kiszka2008-12-31
| | | | | | | | | | | CPU reset invalidates pending or already injected NMIs, therefore reset the related state variables. Based on original patch by Gleb Natapov. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Support for NMI task gatesJan Kiszka2008-12-31
| | | | | | | | | | | | | Properly set GUEST_INTR_STATE_NMI and reset nmi_injected when a task-switch vmexit happened due to a task gate being used for handling NMIs. Also avoid the false warning about valid vectoring info in kvm_handle_exit. Based on original patch by Gleb Natapov. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Use INTR_TYPE_NMI_INTR instead of magic valueJan Kiszka2008-12-31
| | | | | Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: include all IRQ window exits in statisticsJan Kiszka2008-12-31
| | | | | | | | | irq_window_exits only tracks IRQ window exits due to user space requests, nmi_window_exits include all exits. The latter makes more sense, so let's adjust irq_window_exits accounting. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: consolidate push regGuillaume Thouvenin2008-12-31
| | | | | | | | This patch consolidate the emulation of push reg instruction. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@bull.net> Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Avi Kivity <avi@redhat.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds2008-12-30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: struct device - replace bus_id with dev_name() lguest: move the initial guest page table creation code to the host kvm-s390: implement config_changed for virtio on s390 virtio_console: support console resizing virtio: add PCI device release() function virtio_blk: fix type warning virtio: block: dynamic maximum segments virtio: set max_segment_size and max_sectors to infinite. virtio: avoid implicit use of Linux page size in balloon interface virtio: hand virtio ring alignment as argument to vring_new_virtqueue virtio: use KVM_S390_VIRTIO_RING_ALIGN instead of relying on pagesize virtio: use LGUEST_VRING_ALIGN instead of relying on pagesize virtio: Don't use PAGE_SIZE for vring alignment in virtio_pci. virtio: rename 'pagesize' arg to vring_init/vring_size virtio: Don't use PAGE_SIZE in virtio_pci.c virtio: struct device - replace bus_id with dev_name(), dev_set_name() virtio-pci queue allocation not page-aligned
| * lguest: move the initial guest page table creation code to the hostMatias Zabaljauregui2008-12-29
| | | | | | | | | | | | | | | | This patch moves the initial guest page table creation code to the host, so the launcher keeps working with PAE enabled configs. Signed-off-by: Matias Zabaljauregui <zabaljauregui@gmail.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | Merge branch 'oprofile-for-linus' of ↵Linus Torvalds2008-12-30
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'oprofile-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: oprofile: select RING_BUFFER ring_buffer: adding EXPORT_SYMBOLs oprofile: fix lost sample counter oprofile: remove nr_available_slots() oprofile: port to the new ring_buffer ring_buffer: add remaining cpu functions to ring_buffer.h oprofile: moving cpu_buffer_reset() to cpu_buffer.h oprofile: adding cpu_buffer_entries() oprofile: adding cpu_buffer_write_commit() oprofile: adding cpu buffer r/w access functions ftrace: remove unused function arg in trace_iterator_increment() ring_buffer: update description for ring_buffer_alloc() oprofile: set values to default when creating oprofilefs oprofile: implement switch/case in buffer_sync.c x86/oprofile: cleanup IBS init/exit functions in op_model_amd.c x86/oprofile: reordering IBS code in op_model_amd.c oprofile: fix typo oprofile: whitspace changes only oprofile: update comment for oprofile_add_sample() oprofile: comment cleanup
| * | x86/oprofile: cleanup IBS init/exit functions in op_model_amd.cRobert Richter2008-12-10
| | | | | | | | | | | | | | | | | | | | | | | | Implementation of pairwise init/exit funcions for IBS and IBS NMI setup. There are also some function renames and the removal of forward function declarations. Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | x86/oprofile: reordering IBS code in op_model_amd.cRobert Richter2008-12-10
| | | | | | | | | | | | | | | | | | This is part of the cpu buffer rework. Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | oprofile: whitspace changes onlyRobert Richter2008-12-10
| | | | | | | | | | | | Signed-off-by: Robert Richter <robert.richter@amd.com>
| * | oprofile: comment cleanupRobert Richter2008-12-10
| | | | | | | | | | | | | | | | | | This fixes the coding style of some comments. Signed-off-by: Robert Richter <robert.richter@amd.com>
* | | Merge branch 'irq-core-for-linus' of ↵Linus Torvalds2008-12-30
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, sparseirq: clean up Kconfig entry x86: turn CONFIG_SPARSE_IRQ off by default sparseirq: fix numa_migrate_irq_desc dependency and comments sparseirq: add kernel-doc notation for new member in irq_desc, -v2 locking, irq: enclose irq_desc_lock_class in CONFIG_LOCKDEP sparseirq, xen: make sure irq_desc is allocated for interrupts sparseirq: fix !SMP building, #2 x86, sparseirq: move irq_desc according to smp_affinity, v7 proc: enclose desc variable of show_stat() in CONFIG_SPARSE_IRQ sparse irqs: add irqnr.h to the user headers list sparse irqs: handle !GENIRQ platforms sparseirq: fix !SMP && !PCI_MSI && !HT_IRQ build sparseirq: fix Alpha build failure sparseirq: fix typo in !CONFIG_IO_APIC case x86, MSI: pass irq_cfg and irq_desc x86: MSI start irq numbering from nr_irqs_gsi x86: use NR_IRQS_LEGACY sparse irq_desc[] array: core kernel and x86 changes genirq: record IRQ_LEVEL in irq_desc[] irq.h: remove padding from irq_desc on 64bits
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| *---. \ \ Merge branches 'irq/sparseirq', 'irq/genirq' and 'irq/urgent'; commit ↵Ingo Molnar2008-12-25
| |\ \ \ \ \ | | | | |/ / | | | |/| | | | | | | | 'v2.6.28' into irq/core
| | * | | | x86, sparseirq: clean up Kconfig entryIngo Molnar2008-12-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: improve help text Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: turn CONFIG_SPARSE_IRQ off by defaultIngo Molnar2008-12-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New feature - lets disable it by default first - can flip it around later. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | sparseirq: fix numa_migrate_irq_desc dependency and commentsYinghai Lu2008-12-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce kconfig variable scope and clean up Bartlomiej pointed out that the config dependencies and comments are not right. update it depend to NUMA, and fix some comments Reported-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | sparseirq: fix !SMP building, #2Yinghai Lu2008-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: build fix make intr_remapping.c to include smp.h, so could use boot_cpu_id there also remove old change that disabling sparseirq with !SMP Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86, sparseirq: move irq_desc according to smp_affinity, v7Yinghai Lu2008-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: improve NUMA handling by migrating irq_desc on smp_affinity changes if CONFIG_NUMA_MIGRATE_IRQ_DESC is set: - make irq_desc to go with affinity aka irq_desc moving etc - call move_irq_desc in irq_complete_move() - legacy irq_desc is not moved, because they are allocated via static array for logical apic mode, need to add move_desc_in_progress_in_same_domain, otherwise it will not be moved ==> also could need two phases to get irq_desc moved. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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