- 31 Dec, 2008 40 commits
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Sheng Yang authored
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>
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Xiantao Zhang authored
Remove the lock protection for kvm halt logic, otherwise, once other vcpus want to acquire the lock, and they have to wait all vcpus are waken up from halt. Signed-off-by:
Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by:
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Xiantao Zhang authored
1. Increase the size of data area to 64M 2. Support more vcpus and memory, 128 vcpus and 256G memory are supported for guests. 3. Add the boundary check for memory and vcpu allocation. With this patch, kvm guest's data area looks as follow: * * +----------------------+ ------- KVM_VM_DATA_SIZE * | vcpu[n]'s data | | ___________________KVM_STK_OFFSET * | | | / | * | .......... | | /vcpu's struct&stack | * | .......... | | /---------------------|---- 0 * | vcpu[5]'s data | | / vpd | * | vcpu[4]'s data | |/-----------------------| * | vcpu[3]'s data | / vtlb | * | vcpu[2]'s data | /|------------------------| * | vcpu[1]'s data |/ | vhpt | * | vcpu[0]'s data |____________________________| * +----------------------+ | * | memory dirty log | | * +----------------------+ | * | vm's data struct | | * +----------------------+ | * | | | * | | | * | | | * | | | * | | | * | | | * | | | * | vm's p2m table | | * | | | * | | | * | | | | * vm's data->| | | | * +----------------------+ ------- 0 * To support large memory, needs to increase the size of p2m. * To support more vcpus, needs to ensure it has enough space to * hold vcpus' data. */ Signed-off-by:
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Guillaume Thouvenin authored
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:
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Guillaume Thouvenin authored
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:
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Amit Shah authored
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:
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Amit Shah authored
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:
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Amit Shah authored
get_segment_descritptor_dtable() contains an obvious type. Signed-off-by:
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Sheng Yang authored
Also remove unnecessary parameter of unregister irq ack notifier. Signed-off-by:
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Jan Kiszka authored
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:
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Jan Kiszka authored
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:
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Guillaume Thouvenin authored
Add decode entries for 0x04 and 0x05 (ADD) opcodes, execution is already implemented. Signed-off-by:
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Sheng Yang authored
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:
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Sheng Yang authored
Otherwise set_bit() for private memory slot(above KVM_MEMORY_SLOTS) would corrupted memory in 32bit host. Signed-off-by:
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Sheng Yang authored
Remove one left improper comment of removed CR2. Signed-off-by:
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Sheng Yang authored
The effective memory type of EPT is the mixture of MSR_IA32_CR_PAT and memory type field of EPT entry. Signed-off-by:
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Sheng Yang authored
For EPT memory type support. Signed-off-by:
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Sheng Yang authored
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:
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Sheng Yang authored
As well as reset mmu context when set MTRR. Signed-off-by:
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Sheng Yang authored
For KVM can reuse the type define, and need them to support shadow MTRR. Signed-off-by:
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Sheng Yang authored
Prepare for exporting them. Signed-off-by:
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Gleb Natapov authored
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:
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Jan Kiszka authored
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:
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Jan Kiszka authored
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:
Sheng Yang <sheng.yang@intel.com> Signed-off-by:
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Jan Kiszka authored
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:
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Jan Kiszka authored
Kick the NMI receiving VCPU in case the triggering caller runs in a different context. Signed-off-by:
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Jan Kiszka authored
Ensure that a VCPU with pending NMIs is considered runnable. Signed-off-by:
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Jan Kiszka authored
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:
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Jan Kiszka authored
Fix NMI injection in real-mode with the same pattern we perform IRQ injection. Signed-off-by:
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Jan Kiszka authored
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 authored
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 authored
CPU reset invalidates pending or already injected NMIs, therefore reset the related state variables. Based on original patch by Gleb Natapov. Signed-off-by:
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Jan Kiszka authored
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:
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Jan Kiszka authored
Signed-off-by:
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Jan Kiszka authored
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:
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Guillaume Thouvenin authored
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:
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git://oss.sgi.com/xfs/xfsLinus Torvalds authored
* 'for-linus' of git://oss.sgi.com/xfs/xfs: (184 commits) [XFS] Fix race in xfs_write() between direct and buffered I/O with DMAPI [XFS] handle unaligned data in xfs_bmbt_disk_get_all [XFS] avoid memory allocations in xfs_fs_vcmn_err [XFS] Fix speculative allocation beyond eof [XFS] Remove XFS_BUF_SHUT() and friends [XFS] Use the incore inode size in xfs_file_readdir() [XFS] set b_error from bio error in xfs_buf_bio_end_io [XFS] use inode_change_ok for setattr permission checking [XFS] add a FMODE flag to make XFS invisible I/O less hacky [XFS] resync headers with libxfs [XFS] simplify projid check in xfs_rename [XFS] replace b_fspriv with b_mount [XFS] Remove unused tracing code [XFS] Remove unnecessary assertion [XFS] Remove unused variable in ktrace_free() [XFS] Check return value of xfs_buf_get_noaddr() [XFS] Fix hang after disallowed rename across directory quota domains [XFS] Fix compile with CONFIG_COMPAT enabled move inode tracing out of xfs_vnode. move vn_iowait / vn_iowake into xfs_aops.c ...
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git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds authored
* git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (70 commits) fs/nfs/nfs4proc.c: make nfs4_map_errors() static rpc: add service field to new upcall rpc: add target field to new upcall nfsd: support callbacks with gss flavors rpc: allow gss callbacks to client rpc: pass target name down to rpc level on callbacks nfsd: pass client principal name in rsc downcall rpc: implement new upcall rpc: store pointer to pipe inode in gss upcall message rpc: use count of pipe openers to wait for first open rpc: track number of users of the gss upcall pipe rpc: call release_pipe only on last close rpc: add an rpc_pipe_open method rpc: minor gss_alloc_msg cleanup rpc: factor out warning code from gss_pipe_destroy_msg rpc: remove unnecessary assignment NFS: remove unused status from encode routines NFS: increment number of operations in each encode routine NFS: fix comment placement in nfs4xdr.c NFS: fix tabs in nfs4xdr.c ...
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infinibandLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/mlx4: Fix reading SL field out of cqe->sl_vid RDMA/addr: Fix build breakage when IPv6 is disabled
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (104 commits) [SCSI] fcoe: fix configuration problems [SCSI] cxgb3i: fix select/depend problem [SCSI] fcoe: fix incorrect use of struct module [SCSI] cxgb3i: remove use of skb->sp [SCSI] cxgb3i: Add cxgb3i iSCSI driver. [SCSI] zfcp: Remove unnecessary warning message [SCSI] zfcp: Add support for unchained FSF requests [SCSI] zfcp: Remove busid macro [SCSI] zfcp: remove DID_DID flag [SCSI] zfcp: Simplify mask lookups for incoming RSCNs [SCSI] zfcp: Remove initial device data from zfcp_data [SCSI] zfcp: fix compile warning [SCSI] zfcp: Remove adapter list [SCSI] zfcp: Simplify SBAL allocation to fix sparse warnings [SCSI] zfcp: register with SCSI layer on ccw registration [SCSI] zfcp: Fix message line break [SCSI] qla2xxx: changes in multiq code [SCSI] eata: fix the data buffer accessors conversion regression [SCSI] ibmvfc: Improve async event handling [SCSI] lpfc : correct printk types on PPC compiles ...
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