- 01 Aug, 2010 40 commits
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Xiao Guangrong authored
In current code, shadow page can become asynchronous only if one shadow page for a gfn, this rule is too strict, in fact, we can let all last mapping page(i.e, it's the pte page) become unsync, and sync them at invlpg or flush tlb time. This patch allow more page become asynchronous at gfn mapping time Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Avi Kivity authored
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Gleb Natapov authored
On SVM interrupts are injected by svm_set_irq() not svm_inject_irq(). The later is used only to wait for irq window. Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
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Xiao Guangrong authored
Only unsync pages need updated at invlpg time since other shadow pages are write-protected Signed-off-by:
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Xiao Guangrong authored
Two cases maybe happen in kvm_mmu_get_page() function: - one case is, the goal sp is already in cache, if the sp is unsync, we only need update it to assure this mapping is valid, but not mark it sync and not write-protect sp->gfn since it not broke unsync rule(one shadow page for a gfn) - another case is, the goal sp not existed, we need create a new sp for gfn, i.e, gfn (may)has another shadow page, to keep unsync rule, we should sync(mark sync and write-protect) gfn's unsync shadow page. After enabling multiple unsync shadows, we sync those shadow pages only when the new sp not allow to become unsync(also for the unsyc rule, the new rule is: allow all pte page become unsync) Signed-off-by:
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Xiao Guangrong authored
Split kvm_sync_page() into kvm_sync_page() and kvm_sync_page_transient() to clarify the code address Avi's suggestion kvm_sync_page_transient() function only update shadow page but not mark it sync and not write protect sp->gfn. it will be used by later patch Signed-off-by:
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Sheng Yang authored
Convert KVM to use generic FPU API. Signed-off-by:
Sheng Yang <sheng@linux.intel.com> Signed-off-by:
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Sheng Yang authored
We can avoid unnecessary fpu load when userspace process didn't use FPU frequently. Derived from Avi's idea. Signed-off-by:
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Sheng Yang authored
Also add some constants. Signed-off-by:
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Avi Kivity authored
Now that all arch specific ioctls have centralized locking, it is easy to move it to the central dispatcher. Signed-off-by: -
Avi Kivity authored
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Avi Kivity authored
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Avi Kivity authored
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Avi Kivity authored
All vcpu ioctls need to be locked, so instead of locking each one specifically we lock at the generic dispatcher. This patch only updates generic ioctls and leaves arch specific ioctls alone. Signed-off-by: -
Xiao Guangrong authored
fix: arch/x86/kvm/x86.c: In function ‘handle_emulation_failure’: arch/x86/kvm/x86.c:3844: warning: unused variable ‘ctxt’ Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>
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Xiao Guangrong authored
sp->gfns[] contain unaliased gfns, but gpte might contain pointer to aliased region. Signed-off-by:
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Xiao Guangrong authored
Remove rmap before clear spte otherwise it will trigger BUG_ON() in some functions such as rmap_write_protect(). Signed-off-by:
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Xiao Guangrong authored
Use kmem_cache_free to free objects allocated by kmem_cache_alloc. Signed-off-by:
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Alex Williamson authored
Remove this check in an effort to allow kvm guests to run without root privileges. This capability check doesn't seem to add any security since the device needs to have already been added via the assign device ioctl and the io actually occurs through the pci sysfs interface. Signed-off-by:
Alex Williamson <alex.williamson@redhat.com> Signed-off-by:
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Sheng Yang authored
Only modifying some bits of CR0/CR4 needs paging mode switch. Modify EFER.NXE bit would result in reserved bit updates. Signed-off-by:
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Sheng Yang authored
mmu.free() already set root_hpa to INVALID_PAGE, no need to do it again in the destory_kvm_mmu(). kvm_x86_ops->set_cr4() and set_efer() already assign cr4/efer to vcpu->arch.cr4/efer, no need to do it again later. Signed-off-by:
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Mohammed Gamal authored
This adds missing decoder flags for xor instructions (opcodes 0x34 - 0x35) Signed-off-by:
Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by:
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Mohammed Gamal authored
This adds missing decoder flags for sub instructions (opcodes 0x2c - 0x2d) Signed-off-by:
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Mohammed Gamal authored
This adds test acc, imm instruction to the x86 emulator Signed-off-by:
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Marcelo Tosatti authored
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Dongxiao Xu authored
SDM suggests VMXON should be called before VMPTRLD, and VMXOFF should be called after doing VMCLEAR. Therefore in vmm coexistence case, we should firstly call VMXON before any VMCS operation, and then call VMXOFF after the operation is done. Signed-off-by:
Dongxiao Xu <dongxiao.xu@intel.com> Signed-off-by:
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Dongxiao Xu authored
Originally VMCLEAR/VMPTRLD is called on vcpu migration. To support hosted VMM coexistance, VMCLEAR is executed on vcpu schedule out, and VMPTRLD is executed on vcpu schedule in. This could also eliminate the IPI when doing VMCLEAR. Signed-off-by:
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Dongxiao Xu authored
Do some preparations for vmm coexistence support. Signed-off-by:
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Dongxiao Xu authored
Define vmcs_load() and kvm_cpu_vmxon() to avoid direct call of asm code. Also move VMXE bit operation out of kvm_cpu_vmxoff(). Signed-off-by:
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Gui Jianfeng authored
There's no member "cr4_nxe" in struct kvm_mmu_page_role, it names "nxe" now. Update mmu document. Signed-off-by:
Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by:
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Avi Kivity authored
We drop the mmu lock between freeing memory and allocating the roots; this allows some other vcpu to sneak in and allocate memory. While the race is benign (resulting only in temporary overallocation, not oom) it is simple and easy to fix by moving the freeing close to the allocation. Signed-off-by:
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Gleb Natapov authored
Do not kill VM when instruction emulation fails. Inject #UD and report failure to userspace instead. Userspace may choose to reenter guest if vcpu is in userspace (cpl == 3) in which case guest OS will kill offending process and continue running. Signed-off-by:
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Avi Kivity authored
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Avi Kivity authored
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Gui Jianfeng authored
Currently, kvm_mmu_zap_page() returning the number of freed children sp. This might confuse the caller, because caller don't know the actual freed number. Let's make kvm_mmu_zap_page() return the number of pages it actually freed. Signed-off-by:
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Gui Jianfeng authored
Fix a debug output error in walk_addr Signed-off-by:
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Gui Jianfeng authored
Sometime cmpxchg_gpte doesn't modify gpte, in such case, don't mark page table page as dirty. Signed-off-by:
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Joerg Roedel authored
This patch enables setting of efer bit 13 which is allowed in all SVM capable processors. This is necessary for the SLES11 version of Xen 4.0 to boot with nested svm. Signed-off-by:
Joerg Roedel <joerg.roedel@amd.com> Signed-off-by:
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Joerg Roedel authored
This patch adds a function to dump the vmcb into the kernel log and calls it after a failed vmrun to ease debugging. Signed-off-by:
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Avi Kivity authored
KVM_REQ_KICK poisons vcpu->requests by having a bit set during normal operation. This causes the fast path check for a clear vcpu->requests to fail all the time, triggering tons of atomic operations. Fix by replacing KVM_REQ_KICK with a vcpu->guest_mode atomic. Signed-off-by:
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