- 01 Aug, 2010 40 commits
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Alexander Graf authored
Initially we had to search for pte entries to invalidate them. Since the logic has improved since then, we can just get rid of the search function. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
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Huang Ying authored
is_hwpoison_address accesses the page table, so the caller must hold current->mm->mmap_sem in read mode. So fix its usage in hva_to_pfn of kvm accordingly. Comment is_hwpoison_address to remind other users. Reported-by: Avi Kivity <avi@redhat.com> Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Sheng Yang authored
Enable Intel(R) Advanced Vector Extension(AVX) for guest. The detection of AVX feature includes OSXSAVE bit testing. When OSXSAVE bit is not set, even if AVX is supported, the AVX instruction would result in UD as well. So we're safe to expose AVX bits to guest directly. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
If a process with a memory slot is COWed, the page will change its address (despite having an elevated reference count). This breaks internal memory slots which have their physical addresses loaded into vmcs registers (see the APIC access memory slot). Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
May be used for distinguishing between internal and user slots, or for sorting slots in size order. Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Usually the vcpu->requests bitmap is sparse, so a test_and_clear_bit() for each request generates a large number of unneeded atomics if a bit is set. Replace with a separate test/clear sequence. This is safe since there is no clear_bit() outside the vcpu thread. Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Makes it a little more readable and hackable. Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Part of the i8259 code pretends it isn't part of kvm, but we know better. Reduce excessive abstraction, eliminating callbacks and void pointers. Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Equivalent (and better) functionality is provided by user-allocated memory regions. Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
As advertised in feature-removal-schedule.txt. Equivalent support is provided by overlapping memory regions. Signed-off-by: Avi Kivity <avi@redhat.com>
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Christian Borntraeger authored
Newer (guest) kernels use sigp sense running in their spinlock implementation to check if the other cpu is running before yielding the processor. This revealed some wrong guest settings, causing unnecessary exits for every sigp sense running. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Christian Borntraeger authored
This patch fixes ERROR: "__kvm_s390_vcpu_store_status" [arch/s390/kvm/kvm.ko] undefined! triggered by commit 3268c56840dcee78c3e928336550f4e1861504c4 (kvm.git) Author: Avi Kivity <avi@redhat.com> Date: Thu May 13 12:21:46 2010 +0300 KVM: s390: Centrally lock arch specific vcpu ioctls Reported-by: Sachin Sant <sachinp@in.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Instead of three temporary variables and three free calls, have one temporary variable (with four names) and one free call. Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
We allocate temporary kernel buffers for these structures, but never free them. Signed-off-by: Avi Kivity <avi@redhat.com>
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Wei Yongjun authored
Group 3 instruction with ModRM reg field as 001 is defined as test instruction under AMD arch, and emulate_grp3() is ready for emulate it, so fix the decoding. static inline int emulate_grp3(...) { ... switch (c->modrm_reg) { case 0 ... 1: /* test */ emulate_2op_SrcV("test", c->src, c->dst, ctxt->eflags); ... } Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Asias He authored
Fixes: arch/powerpc/kvm/booke.c: In function 'kvmppc_core_deliver_interrupts': arch/powerpc/kvm/booke.c:147: warning: 'msr_mask' may be used uninitialized in this function Signed-off-by: Asias He <asias.hejun@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Jason Wang authored
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Chris Lalancette authored
Otherwise we might try to deliver a timer interrupt to a cpu that can't possibly handle it. Signed-off-by: Chris Lalancette <clalance@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Chris Lalancette authored
If the guest wants to accept timer interrupts on a CPU other than the BSP, we need to remove this gate. Signed-off-by: Chris Lalancette <clalance@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Chris Lalancette authored
We really want to "kvm_set_irq" during the hrtimer callback, but that is risky because that is during interrupt context. Instead, offload the work to a workqueue, which is a bit safer and should provide most of the same functionality. Signed-off-by: Chris Lalancette <clalance@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Wei Yongjun authored
emulate pusha instruction only writeback the last EDI register, but the other registers which need to be writeback is ignored. This patch fixed it. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Zachary Amsden authored
Fix a slight error with assertion in local APIC code. Signed-off-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Xiao Guangrong authored
While we mark the parent's unsync_child_bitmap, if the parent is already unsynced, it no need walk it's parent, it can reduce some unnecessary workload Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Xiao Guangrong authored
In current code, some page's unsync_child_bitmap is not cleared completely in mmu_sync_children(), for example, if two PDPEs shard one PDT, one of PDPE's unsync_child_bitmap is not cleared. Currently, it not harm anything just little overload, but it's the prepare work for the later patch Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Xiao Guangrong authored
Decrease sp->unsync_children after clear unsync_child_bitmap bit Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Xiao Guangrong authored
If the sync-sp just sync transient, don't mark its pte notrap Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Xiao Guangrong authored
The sync page is already write protected in mmu_sync_children(), don't write protected it again Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Xiao Guangrong authored
Using wrap function to cleanup page dirty judgment Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Xiao Guangrong authored
Rename 'page' and 'shadow_page' to 'sp' to better fit the context Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Sheng Yang authored
This patch enable save/restore of xsave state. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Denis Kirjanov authored
Fix compile warning: CC [M] arch/powerpc/kvm/powerpc.o arch/powerpc/kvm/powerpc.c: In function 'kvm_arch_vcpu_ioctl_run': arch/powerpc/kvm/powerpc.c:290: warning: 'gpr' may be used uninitialized in this function arch/powerpc/kvm/powerpc.c:290: note: 'gpr' was declared here Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Avi Kivity authored
On Intel, we call skip_emulated_instruction() even if we injected a #GP, resulting in the #GP pointing at the wrong address. Fix by injecting the exception and skipping the instruction at the same place, so we can do just one or the other. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Avi Kivity authored
On Intel, we call skip_emulated_instruction() even if we injected a #GP, resulting in the #GP pointing at the wrong address. Fix by injecting the exception and skipping the instruction at the same place, so we can do just one or the other. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Avi Kivity authored
On Intel, we call skip_emulated_instruction() even if we injected a #GP, resulting in the #GP pointing at the wrong address. Fix by injecting the exception and skipping the instruction at the same place, so we can do just one or the other. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Dexuan Cui authored
This patch enable guest to use XSAVE/XRSTOR instructions. We assume that host_xcr0 would use all possible bits that OS supported. And we loaded xcr0 in the same way we handled fpu - do it as late as we can. Signed-off-by: Dexuan Cui <dexuan.cui@intel.com> Signed-off-by: Sheng Yang <sheng@linux.intel.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Avi Kivity authored
Signed-off-by: Avi Kivity <avi@redhat.com>
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Andi Kleen authored
No real bugs in this one. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Andi Kleen authored
When the user passed in a NULL mask pass this on from the ioctl handler. Found by gcc 4.6's new warnings. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
delay local tlb flush until enter guest moden, it can reduce vpid flush frequency and reduce remote tlb flush IPI(if KVM_REQ_TLB_FLUSH bit is already set, IPI is not sent) Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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