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2008-10-15KVM: Device Assignment: Move vtd.c from arch/x86/kvm/ to virt/kvm/Zhang xiantao
Preparation for kvm/ia64 VT-d support. Signed-off-by: Zhang xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15KVM: VMX: enable invlpg exiting if EPT is disabledMarcelo Tosatti
Manually disabling EPT via module option fails to re-enable INVLPG exiting. Reported-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15KVM: x86: Silence various LAPIC-related host kernel messagesJan Kiszka
KVM-x86 dumps a lot of debug messages that have no meaning for normal operation: - INIT de-assertion is ignored - SIPIs are sent and received - APIC writes are unaligned or < 4 byte long (Windows Server 2003 triggers this on SMP) Degrade them to true debug messages, keeping the host kernel log clean for real problems. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: Device Assignment: Map mmio pages into VT-d page tableWeidong Han
Assigned device could DMA to mmio pages, so also need to map mmio pages into VT-d page table. Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: PIC: enhance IPI avoidanceMarcelo Tosatti
The PIC code makes little effort to avoid kvm_vcpu_kick(), resulting in unnecessary guest exits in some conditions. For example, if the timer interrupt is routed through the IOAPIC, IRR for IRQ 0 will get set but not cleared, since the APIC is handling the acks. This means that everytime an interrupt < 16 is triggered, the priority logic will find IRQ0 pending and send an IPI to vcpu0 (in case IRQ0 is not masked, which is Linux's case). Introduce a new variable isr_ack to represent the IRQ's for which the guest has been signalled / cleared the ISR. Use it to avoid more than one IPI per trigger-ack cycle, in addition to the avoidance when ISR is set in get_priority(). Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: add "oos_shadow" parameter to disable oosMarcelo Tosatti
Subject says it all. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: speed up mmu_unsync_walkMarcelo Tosatti
Cache the unsynced children information in a per-page bitmap. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: out of sync shadow coreMarcelo Tosatti
Allow guest pagetables to go out of sync. Instead of emulating write accesses to guest pagetables, or unshadowing them, we un-write-protect the page table and allow the guest to modify it at will. We rely on invlpg executions to synchronize individual ptes, and will synchronize the entire pagetable on tlb flushes. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: mmu_convert_notrap helperMarcelo Tosatti
Need to convert shadow_notrap_nonpresent -> shadow_trap_nonpresent when unsyncing pages. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: awareness of new kvm_mmu_zap_page behaviourMarcelo Tosatti
kvm_mmu_zap_page will soon zap the unsynced children of a page. Restart list walk in such case. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: mmu_parent_walkMarcelo Tosatti
Introduce a function to walk all parents of a given page, invoking a handler. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: x86: trap invlpgMarcelo Tosatti
With pages out of sync invlpg needs to be trapped. For now simply nuke the entry. Untested on AMD. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: sync roots on mmu reloadMarcelo Tosatti
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: mode specific sync_pageMarcelo Tosatti
Examine guest pagetable and bring the shadow back in sync. Caller is responsible for local TLB flush before re-entering guest mode. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: do not write-protect large mappingsMarcelo Tosatti
There is not much point in write protecting large mappings. This can only happen when a page is shadowed during the window between is_largepage_backed and mmu_lock acquision. Zap the entry instead, so the next pagefault will find a shadowed page via is_largepage_backed and fallback to 4k translations. Simplifies out of sync shadow. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: move local TLB flush to mmu_set_spteMarcelo Tosatti
Since the sync page path can collapse flushes. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: split mmu_set_spteMarcelo Tosatti
Split the spte entry creation code into a new set_spte function. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: MMU: flush remote TLBs on large->normal entry overwriteMarcelo Tosatti
It is necessary to flush all TLB's when a large spte entry is overwritten with a normal page directory pointer. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15x86: pvclock: fix shadowed variable warningHarvey Harrison
arch/x86/kernel/pvclock.c:102:6: warning: symbol 'tsc_khz' shadows an earlier one include/asm/tsc.h:18:21: originally declared here Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: ia64: add support for Tukwila processorsXiantao Zhang
In Tukwila processor, VT-i has been enhanced in its implementation, it is often called VT-i2 techonology. With VTi-2 support, virtulization performance should be improved. In this patch, we added the related stuff to support kvm/ia64 for Tukwila processors. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: ia64: Implement a uniform vps interfaceXiantao Zhang
An uniform entry kvm_vps_entry is added for vps_sync_write/read, vps_resume_handler/guest, and branches to differnt PAL service according to the offset. Singed-off-by: Anthony Xu <anthony.xu@intel.com> Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: don't enter guest after SIPI was received by a CPUGleb Natapov
The vcpu should process pending SIPI message before entering guest mode again. kvm_arch_vcpu_runnable() returns true if the vcpu is in SIPI state, so we can't call it here. Signed-off-by: Gleb Natapov <gleb@qumranet.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: x86.c make kvm_load_realmode_segment staticHarvey Harrison
Noticed by sparse: arch/x86/kvm/x86.c:3591:5: warning: symbol 'kvm_load_realmode_segment' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: switch to get_user_pages_fastMarcelo Tosatti
Convert gfn_to_pfn to use get_user_pages_fast, which can do lockless pagetable lookups on x86. Kernel compilation on 4-way guest is 3.7% faster on VMX. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: Device Assignment: Free device structures if IRQ allocation failsAmit Shah
When an IRQ allocation fails, we free up the device structures and disable the device so that we can unregister the device in the userspace and not expose it to the guest at all. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2008-10-15KVM: Device Assignment with VT-dBen-Ami Yassour
Based on a patch by: Kay, Allen M <allen.m.kay@intel.com> This patch enables PCI device assignment based on VT-d support. When a device is assigned to the guest, the guest memory is pinned and the mapping is updated in the VT-d IOMMU. [Amit: Expose KVM_CAP_IOMMU so we can check if an IOMMU is present and also control enable/disable from userspace] Signed-off-by: Kay, Allen M <allen.m.kay@intel.com> Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com> Signed-off-by: Amit Shah <amit.shah@qumranet.com> Acked-by: Mark Gross <mgross@linux.intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15[ARM] 5308/1: Fix Viper ISA IRQ handlingMarc Zyngier
The ISA IRQ renumbering broke the Viper ISA code in interesting ways. It originally assumed that ISA interrupt were numbered in the order that is defined by the CPLD registers. Unfortunately, this is no longer the case. Furthermore, the viper_irq_handler() function being a chained IRQ handler, it must ACK the interrupt by itself, or the handler will be immediately reentered, with the expected damages. This fix was made possible thanks to the help of David Raeman, who provided debug information and tested each version of this patch. Tested-by: David Raeman <david.raeman@gmail.com> Signed-off-by: Marc Zyngier <maz@misterjones.org> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-10-15MIPS: Kill unused <asm/debug.h> inclusionsShinya Kuribayashi
Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: IP32: Add platform device for CMOS RTC; remove dead codeThomas Bogendoerfer
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: IP27: Switch over to RTC class driverThomas Bogendoerfer
This patchset removes some dead code and creates a platform device for the RTC class driver. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: IP22/28: Switch over to RTC class driverThomas Bogendoerfer
This patchset removes some dead code and creates a platform device for the RTC class driver. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: PCI: Scan busses when they are registeredAurelien Jarno
The patch below changes register_pci_controller() such that controllers being added after pcibios_init() has run are be scanned immediately. This is needed for example by the BCM47xx PCI controller, which is located on the SSB bus, which is now initialized after the PCI subsystem. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: WGT634U: Add reset button supportAurelien Jarno
This patch adds support for the reset button of WGT634U machine, using GPIO interrupts. Based on a patch from Michel Lespinasse. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: BCM47xx: Use the new SSB GPIO APIAurelien Jarno
This patch simplifies the BCM47xx GPIO code by using the new SSB GPIO API, which does a lot things that were implemented directly in the BCM47xx code. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: BCM47xx: Remove references to BCM947XXAurelien Jarno
This patch removes the remaining reference to the BCM947xx development board codename. Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: WGT634U: Add machine detection messageAurelien Jarno
This adds a printk message when a WGT634U machine is detected. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: Align .data.cacheline_aligned based on CONFIG_MIPS_L1_CACHE_SHIFTDavid Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Tomaso Paoletti <tpaoletti@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: show_cpuinfo prints the type of the calling CPUJohannes Dickgreber
It should print the type of the Nth processor. Signed-off-by: Johannes Dickgreber <tanzy@gmx.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: Fix wrong branch target in new spin_lock code.Johannes Dickgreber
Signed-off-by: Johannes Dickgreber <tanzy@gmx.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15MIPS: Have a heart for a lonely, lost header file ...Ralf Baechle
... and move it to where all its brothers and sisters reside. Requested by Shane McDonald <mcdonald.shane@gmail.com>. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-10-15[ARM] 5306/1: pxa: fix build error on CM-X270Mike Rapoport
Fix build for CM-X2XX with CONFIG_RTC_DRV_V3020 unset: CC arch/arm/mach-pxa/cm-x270.o /mnt/sdb1/git/linux-2.6-arm/arch/arm/mach-pxa/cm-x270.c: In function 'cmx270_init': /mnt/sdb1/git/linux-2.6-arm/arch/arm/mach-pxa/cm-x270.c:338: error: implicit declaration of function 'cmx270_init_rtc' make[2]: *** [arch/arm/mach-pxa/cm-x270.o] Error 1 Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-10-15Merge branches 'core/softlockup', 'core/softirq', 'core/resources', ↵Ingo Molnar
'core/printk' and 'core/misc' into core-v28-for-linus
2008-10-15KVM: x86 emulator: Use DstAcc for 'and'Guillaume Thouvenin
For instruction 'and al,imm' we use DstAcc instead of doing the emulation directly into the instruction's opcode. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15KVM: x86 emulator: Add cmp al, imm and cmp ax, imm instructions (ocodes 3c, 3d)Guillaume Thouvenin
Add decode entries for these opcodes; execution is already implemented. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15KVM: x86 emulator: Add DstAcc operand typeGuillaume Thouvenin
Add DstAcc operand type. That means that there are 4 bits now for DstMask. "In the good old days cpus would have only one register that was able to fully participate in arithmetic operations, typically called A for Accumulator. The x86 retains this tradition by having special, shorter encodings for the A register (like the cmp opcode), and even some instructions that only operate on A (like mul). SrcAcc and DstAcc would accommodate these instructions by decoding A into the corresponding 'struct operand'." -- Avi Kivity Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15x86: Move FEATURE_CONTROL bits to msr-index.hSheng Yang
For MSR_IA32_FEATURE_CONTROL is already there. Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15KVM: VMX: Rename IA32_FEATURE_CONTROL bitsSheng Yang
Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15KVM: x86 emulator: fix jmp r/m64 instructionAvi Kivity
jmp r/m64 doesn't require the rex.w prefix to indicate the operand size is 64 bits. Set the Stack attribute (even though it doesn't involve the stack, really) to indicate this. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15KVM: VMX: Cleanup stalled INTR_INFO readJan Kiszka
Commit 1c0f4f5011829dac96347b5f84ba37c2252e1e08 left a useless access of VM_ENTRY_INTR_INFO_FIELD in vmx_intr_assist behind. Clean this up. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15KVM: ppc: kvmppc_44x_shadow_release() does not require mmap_sem to be lockedHollis Blanchard
And it gets in the way of get_user_pages_fast(). Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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