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2008-01-30KVM: MMU: Introduce and use gpte_to_gfn()Avi Kivity
Instead of repretitively open-coding this. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: MMU: Code cleanupIzik Eidus
Signed-off-by: Izik Eidus <izike@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Don't bother the mmu if cr3 load doesn't change cr3Avi Kivity
If the guest requests just a tlb flush, don't take the vm lock and drop the mmu context pointlessly. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: MMU: Avoid unnecessary remote tlb flushes when guest updates a pteAvi Kivity
If all we're doing is increasing permissions on a pte (typical for demand paging), then there's not need to flush remote tlbs. Worst case they'll get a spurious page fault. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Add statistic for remote tlb flushesAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: MMU: Implement guest page fault bypass for nonpaeAvi Kivity
I spent an hour worrying why I see so many guest page faults on FC6 i386. Turns out bypass wasn't implemented for nonpae. Implement it so it doesn't happen again. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Split vcpu creation to avoid vcpu_load() before preemption setupAvi Kivity
Split kvm_arch_vcpu_create() into kvm_arch_vcpu_create() and kvm_arch_vcpu_setup(), enabling preemption notification between the two. This mean that we can now do vcpu_load() within kvm_arch_vcpu_setup(). Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Split kvm_set_memory_region() to have an arch calloutZhang Xiantao
Moving !user_alloc case to kvm_arch to avoid unnecessary code logic in non-x86 platform. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Recalculate mmu pages needed for every memory region changeZhang Xiantao
Instead of incrementally changing the mmu cache size for every memory slot operation, recalculate it from scratch. This is simpler and safer. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: x86 emulator: prefetch up to 15 bytes of the instruction executedAvi Kivity
Instead of fetching one byte at a time, prefetch 15 bytes (or until the next page boundary) to avoid guest page table walks. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: x86 emulator: retire ->write_std()Avi Kivity
Theoretically used to acccess memory known to be ordinary RAM, it was never implemented. It is questionable whether it is possible to implement it correctly. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: MMU: Selectively set PageDirty when releasing guest memoryIzik Eidus
Improve dirty bit setting for pages that kvm release, until now every page that we released we marked dirty, from now only pages that have potential to get dirty we mark dirty. Signed-off-by: Izik Eidus <izike@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: MMU: Fix potential memory leak with smp real-modeIzik Eidus
When we map a page, we check whether some other vcpu mapped it for us and if so, bail out. But we should decrease the refcount on the page as we do so. Signed-off-by: Izik Eidus <izike@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Export include/asm-x86/kvm.hAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move cpuid structures to <asm/kvm.h>Jerone Young
This patch moves structures: kvm_cpuid_entry kvm_cpuid from include/linux/kvm.h to include/asm-x86/kvm.h Signed-off-by: Jerone Young <jyoung5@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move kvm_sregs and msr structures to <asm/kvm.h>Jerone Young
Move structures: kvm_sregs kvm_msr_entry kvm_msrs kvm_msr_list from include/linux/kvm.h to include/asm-x86/kvm.h Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move kvm_segment & kvm_dtable structure to <asm/kvm.h>Jerone Young
This patch moves structures: kvm_segment kvm_dtable from include/linux/kvm.h to include/asm-x86/kvm.h Signed-off-by: Jerone Young <jyoung5@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move structure lapic_state to <asm/kvm.h>Jerone Young
This patch moves structure lapic_state from include/linux/kvm.h to include/asm-x86/kvm.h Signed-off-by: Jerone Young <jyoung5@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move kvm_regs to <asm/kvm.h>Jerone Young
This patch moves structure kvm_regs to include/asm-x86/kvm.h. Each architecture will need to create there own version of this structure. Signed-off-by: Jerone Young <jyoung5@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move x86 pic strutcturesJerone Young
This patch moves structures: kvm_pic_state kvm_ioapic_state to inclue/asm-x86/kvm.h. Signed-off-by: Jerone Young <jyoung5@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move kvm_memory_alias to asm/kvm.hJerone Young
This patch moves sturct kvm_memory_alias from include/linux/kvm.h to include/asm-x86/kvm.h. Also have include/linux/kvm.h include include/asm/kvm.h. Signed-off-by: Jerone Young <jyoung5@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Move misplaced commentHollis Blanchard
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Correct consistent typo: "destory" -> "destroy"Hollis Blanchard
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Remove unused "rmap_overflow" variableHollis Blanchard
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: MMU: Remove unused variableAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Simplify kvm_clear_guest_page()Izik Eidus
Use kvm_write_guest_page() with empty_zero_page, instead of doing kmap and memset. Signed-off-by: Izik Eidus <izike@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: MMU: Change guest pte access to kvm_{read,write}_guest()Izik Eidus
Things are simpler and more regular this way. Signed-off-by: Izik Eidus <izike@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: VMX: Force seg.base == (seg.sel << 4) in real modeJan Kiszka
Ensure that segment.base == segment.selector << 4 when entering the real mode on Intel so that the CPU will not bark at us. This fixes some old protected mode demo from http://www.x86.org/articles/pmbasics/tspec_a1_doc.htm. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move some function declarations to x86.hZhang Xiantao
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Move some static inline functions out from kvm.h into x86.hZhang Xiantao
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move vcpu regs enumeration definition to x86.hZhang Xiantao
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move struct kvm_x86_ops definition to x86.hZhang Xiantao
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move some macro definitions from kvm.h to x86.hZhang Xiantao
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: MMU initialization and teardown splitZhang Xiantao
Move out kvm_mmu init and exit functionality from kvm_main.c Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move kvm_vcpu_ioctl_get_dirty_log to arch-specific fileZhang Xiantao
Meanwhile keep the interface in common, and leave as more logic in common as possible. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Make unloading of FPU state when putting vcpu arch-independentAmit Shah
Instead of having each architecture do it individually, we do this in the arch-independent code (just x86 as of now). [avi: add svm to the mix, which was added to mainline during the 2.6.24-rc process] Signed-off-by: Amit Shah <amit.shah@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: MMU: Add some mmu statisticsAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Extend stats support for VM statsAvi Kivity
This is in addition to the current virtual cpu statistics. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Add instruction emulation statisticsAvi Kivity
2008-01-30KVM: Add fpu_reload counterAvi Kivity
Measure the number of times we switch the fpu state. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Replace 'light_exits' stat with 'host_state_reload'Avi Kivity
This is a little more accurate (since it counts actual reloads, not potential reloads), and reverses the sense of the statistic to measure a bad event like most of the other stats (e.g. we want to minimize all counters). Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Add two hooks to handle kvm_create and destroy vmZhang Xiantao
Add two arch hooks to handle kvm_create_vm and kvm destroy_vm. Now, just put io_bus init and destory in common. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Remove __init attributes for kvm_init_debug and kvm_init_msr_listZhang Xiantao
Since their callers are not declared with __init. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Remove ptr comparisons to 0Joe Perches
Fix sparse warnings "Using plain integer as NULL pointer" Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Make kvm_vcpu_ioctl_translate arch dependentZhang Xiantao
Move kvm_vcpu_ioctl_translate to arch, since mmu would be put under arch. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: VMX: Consolidate register usage in vmx_vcpu_run()Avi Kivity
We pass vcpu, vmx->fail, and vmx->launched to assembly code, but all three are fields within vmx. Consolidate by only passing in vmx and offsets for the rest. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: move KVM_CHECK_EXTENSIONZhang Xiantao
Make KVM_CHECK_EXTENSION code into a function, all archs can define its capability independently. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Acked-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: x86 emulator: modify 'lods', and 'stos' not to depend on CR2Sheng Yang
The current 'lods' and 'stos' is depending on incoming CR2 rather than decode memory address from registers. Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Move x86 specific code from kvm_init() to kvm_arch()Zhang Xiantao
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Acked-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30KVM: Portability: Combine kvm_init and kvm_init_x86Zhang Xiantao
Will be called once arch module registers itself. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Acked-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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