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2008-07-20KVM: MMU: improve invalid shadow root page handlingMarcelo Tosatti
Harden kvm_mmu_zap_page() against invalid root pages that had been shadowed from memslots that are gone. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: MMU: nuke shadowed pgtable pages and ptes on memslot destructionMarcelo Tosatti
Flush the shadow mmu before removing regions to avoid stale entries. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Prefix some x86 low level function with kvm_, to avoid namespace issuesAvi Kivity
Fixes compilation with CONFIG_VMI enabled. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: check injected pic irq within valid pic irqsBen-Ami Yassour
Check that an injected pic irq is between 0 and 15. Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: Fix HLT instructionMohammed Gamal
This patch fixes issue encountered with HLT instruction under FreeDOS's HIMEM XMS Driver. The HLT instruction jumped directly to the done label and skips updating the EIP value, therefore causing the guest to spin endlessly on the same instruction. The patch changes the instruction so that it writes back the updated EIP value. Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Apply the kernel sigmask to vcpus blocked due to being uninitializedAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: VMX: Add ept_sync_context in flush_tlbSheng Yang
Fix a potention issue caused by kvm_mmu_slot_remove_write_access(). The old behavior don't sync EPT TLB with modified EPT entry, which result in inconsistent content of EPT TLB and EPT table. Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: mmu_shrink: kvm_mmu_zap_page requires slots_lock to be heldMarcelo Tosatti
kvm_mmu_zap_page() needs slots lock held (rmap_remove->gfn_to_memslot, for example). Since kvm_lock spinlock is held in mmu_shrink(), do a non-blocking down_read_trylock(). Untested. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20x86: KVM guest: make kvm_smp_prepare_boot_cpu() staticAdrian Bunk
This patch makes the needlessly global kvm_smp_prepare_boot_cpu() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: SVM: fix suspend/resume supportJoerg Roedel
On suspend the svm_hardware_disable function is called which frees all svm_data variables. On resume they are not re-allocated. This patch removes the deallocation of svm_data from the hardware_disable function to the hardware_unsetup function which is not called on suspend. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: s390: rename private structuresChristian Borntraeger
While doing some tests with our lcrash implementation I have seen a naming conflict with prefix_info in kvm_host.h vs. addrconf.h To avoid future conflicts lets rename private definitions in asm/kvm_host.h by adding the kvm_s390 prefix. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: s390: Set guest storage limit and offset to sane valuesChristian Borntraeger
Some machines do not accept 16EB as guest storage limit. Lets change the default for the guest storage limit to a sane value. We also should set the guest_origin to what userspace thinks it is. This allows guests starting at an address != 0. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Fix memory leak on guest exitCarsten Otte
This patch fixes a memory leak, we want to free the physmem when destroying the vm. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: s390: dont allocate dirty bitmapCarsten Otte
This patch #ifdefs the bitmap array for dirty tracking. We don't have dirty tracking on s390 today, and we'd love to use our storage keys to store the dirty information for migration. Therefore, we won't need this array at all, and due to our limited amount of vmalloc space this limits the amount of guests we can run. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: move slots_lock acquision down to vapic_exitMarcelo Tosatti
There is no need to grab slots_lock if the vapic_page will not be touched. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: VMX: Fake emulate Intel perfctr MSRsChris Lalancette
Older linux guests (in this case, 2.6.9) can attempt to access the performance counter MSRs without a fixup section, and injecting a GPF kills the guest. Work around by allowing the guest to write those MSRs. Tested by me on RHEL-4 i386 and x86_64 guests, as well as F-9 guests. Signed-off-by: Chris Lalancette <clalance@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: VMX: Fix a wrong usage of vmcs_configSheng Yang
The function ept_update_paging_mode_cr0() write to CPU_BASED_VM_EXEC_CONTROL based on vmcs_config.cpu_based_exec_ctrl. That's wrong because the variable may not consistent with the content in the CPU_BASE_VM_EXEC_CONTROL MSR. Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: MMU: Fix printk formatAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: MMU: When debug is enabled, make it a run-time parameterAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: lazily evaluate segment registersAvi Kivity
Instead of prefetching all segment bases before emulation, read them at the last moment. Since most of them are unneeded, we save some cycles on Intel machines where this is a bit expensive. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: avoid segment base adjust for leaAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: simplify rip relative decodingAvi Kivity
rip relative decoding is relative to the instruction pointer of the next instruction; by moving address adjustment until after decoding is complete, we remove the need to determine the instruction size. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: simplify r/m decodingAvi Kivity
Consolidate the duplicated code when not in any special case. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: simplify sib decodingAvi Kivity
Instead of using sparse switches, use simpler if/else sequences. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: handle undecoded rex.b with r/m = 5 in certain casesAvi Kivity
x86_64 does not decode rex.b in certain cases, where the r/m field = 5. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: emulate nop and xchg reg, acc (opcodes 0x90 - 0x97)Mohammed Gamal
Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Use printk_rlimit() instead of reporting emulation failures just onceAvi Kivity
Emulation failure reports are useful, so allow more than one per the lifetime of the module. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Support mixed endian machinesTan, Li
Currently kvmtrace is not portable. This will prevent from copying a trace file from big-endian target to little-endian workstation for analysis. In the patch, kernel outputs metadata containing a magic number to trace log, and changes 64-bit words to be u64 instead of a pair of u32s. Signed-off-by: Tan Li <li.tan@intel.com> Acked-by: Jerone Young <jyoung5@us.ibm.com> Acked-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Do not calculate linear rip in emulation failure reportGlauber Costa
If we're not gonna do anything (case in which failure is already reported), we do not need to even bother with calculating the linear rip. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: only abort guest entry if timer count goes from 0->1Marcelo Tosatti
Only abort guest entry if the timer count went from 0->1, since for 1->2 or larger the bit will either be set already or a timer irq will have been injected. Using atomic_inc_and_test() for it also introduces an SMP barrier to the LAPIC version (thought it was unecessary because of timer migration, but guest can be scheduled to a different pCPU between exit and kvm_vcpu_block(), so there is the possibility for a race). Noticed by Avi. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Add coalesced MMIO support (ia64 part)Laurent Vivier
This patch enables coalesced MMIO for ia64 architecture. It defines KVM_MMIO_PAGE_OFFSET and KVM_CAP_COALESCED_MMIO. It enables the compilation of coalesced_mmio.c. [akpm: fix compile error on ia64] Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Add coalesced MMIO support (powerpc part)Laurent Vivier
This patch enables coalesced MMIO for powerpc architecture. It defines KVM_MMIO_PAGE_OFFSET and KVM_CAP_COALESCED_MMIO. It enables the compilation of coalesced_mmio.c. Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Add coalesced MMIO support (x86 part)Laurent Vivier
This patch enables coalesced MMIO for x86 architecture. It defines KVM_MMIO_PAGE_OFFSET and KVM_CAP_COALESCED_MMIO. It enables the compilation of coalesced_mmio.c. Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Add coalesced MMIO support (common part)Laurent Vivier
This patch adds all needed structures to coalesce MMIOs. Until an architecture uses it, it is not compiled. Coalesced MMIO introduces two ioctl() to define where are the MMIO zones that can be coalesced: - KVM_REGISTER_COALESCED_MMIO registers a coalesced MMIO zone. It requests one parameter (struct kvm_coalesced_mmio_zone) which defines a memory area where MMIOs can be coalesced until the next switch to user space. The maximum number of MMIO zones is KVM_COALESCED_MMIO_ZONE_MAX. - KVM_UNREGISTER_COALESCED_MMIO cancels all registered zones inside the given bounds (bounds are also given by struct kvm_coalesced_mmio_zone). The userspace client can check kernel coalesced MMIO availability by asking ioctl(KVM_CHECK_EXTENSION) for the KVM_CAP_COALESCED_MMIO capability. The ioctl() call to KVM_CAP_COALESCED_MMIO will return 0 if not supported, or the page offset where will be stored the ring buffer. The page offset depends on the architecture. After an ioctl(KVM_RUN), the first page of the KVM memory mapped points to a kvm_run structure. The offset given by KVM_CAP_COALESCED_MMIO is an offset to the coalesced MMIO ring expressed in PAGE_SIZE relatively to the address of the start of th kvm_run structure. The MMIO ring buffer is defined by the structure kvm_coalesced_mmio_ring. [akio: fix oops during guest shutdown] Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: kvm_io_device: extend in_range() to manage len and write attributeLaurent Vivier
Modify member in_range() of structure kvm_io_device to pass length and the type of the I/O (write or read). This modification allows to use kvm_io_device with coalesced MMIO. Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: MMU: Avoid page prefetch on SVMAvi Kivity
SVM cannot benefit from page prefetching since guest page fault bypass cannot by made to work there. Avoid accessing the guest page table in this case. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: MMU: Move nonpaging_prefetch_page()Avi Kivity
In preparation for next patch. No code change. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: implement 'push imm' (opcode 0x68)Avi Kivity
Encountered in FC6 boot sequence, now that we don't force ss.rpl = 0 during the protected mode transition. Not really necessary, but nice to have. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: simplify push imm8 emulationAvi Kivity
Instead of fetching the data explicitly, use SrcImmByte. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: MMU: Optimize prefetch_page()Avi Kivity
Instead of reading each pte individually, read 256 bytes worth of ptes and batch process them. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: Add support for mov r, sreg (0x8c) instructionGuillaume Thouvenin
Add support for mov r, sreg (0x8c) instruction Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Laurent Vivier <laurent.vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: Add support for mov seg, r (0x8e) instructionGuillaume Thouvenin
Add support for mov r, sreg (0x8c) instruction. [avi: drop the sreg decoding table in favor of 1:1 encoding] Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Laurent Vivier <laurent.vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: adds support to mov r,imm (opcode 0xb8) instructionGuillaume Thouvenin
Add support to mov r, imm (0xb8) instruction. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Laurent Vivier <laurent.vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: add support for jmp far 0xeaGuillaume Thouvenin
Add support for jmp far (opcode 0xea) instruction. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Laurent Vivier <laurent.vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: x86 emulator: Update c->dst.bytes in decode instructionGuillaume Thouvenin
Update c->dst.bytes in decode instruction instead of instruction itself. It's needed because if c->dst.bytes is equal to 0, the instruction is not emulated. Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Laurent Vivier <laurent.vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Prefixes segment functions that will be exported with "kvm_"Guillaume Thouvenin
Prefixes functions that will be exported with kvm_. We also prefixed set_segment() even if it still static to be coherent. signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: Laurent Vivier <laurent.vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: MTRR supportAvi Kivity
Add emulation for the memory type range registers, needed by VMware esx 3.5, and by pci device assignment. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: Order segment register constants in the same way as cpu operand encodingAvi Kivity
This can be used to simplify the x86 instruction decoder. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: VMX: Enable NMI with in-kernel irqchipSheng Yang
Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20KVM: IOAPIC/LAPIC: Enable NMI supportSheng Yang
[avi: fix ia64 build breakage] Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-18 01:15:00 +0000