- 01 Aug, 2010 40 commits
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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:
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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:
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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 authored
We allocate temporary kernel buffers for these structures, but never free them. Signed-off-by: -
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:
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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:
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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:
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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:
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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:
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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:
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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:
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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:
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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:
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Xiao Guangrong authored
Decrease sp->unsync_children after clear unsync_child_bitmap bit Signed-off-by:
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Xiao Guangrong authored
If the sync-sp just sync transient, don't mark its pte notrap Signed-off-by:
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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:
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Xiao Guangrong authored
Using wrap function to cleanup page dirty judgment Signed-off-by:
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Xiao Guangrong authored
Rename 'page' and 'shadow_page' to 'sp' to better fit the context Signed-off-by:
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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:
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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:
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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:
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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:
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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:
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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:
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Avi Kivity authored
Signed-off-by: -
Andi Kleen authored
No real bugs in this one. Signed-off-by:
Andi Kleen <ak@linux.intel.com> Signed-off-by:
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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:
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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:
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Xiao Guangrong authored
Use kvm_mmu_flush_tlb() function instead of calling kvm_x86_ops->tlb_flush(vcpu) directly. Signed-off-by:
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Xiao Guangrong authored
This remote tlb flush is no necessary since we have synced while sp is zapped Signed-off-by:
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Xiao Guangrong authored
fix: [ INFO: suspicious rcu_dereference_check() usage. ] --------------------------------------------------- include/linux/kvm_host.h:258 invoked rcu_dereference_check() without protection! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 1 1 lock held by qemu-system-x86/3796: #0: (&vcpu->mutex){+.+.+.}, at: [<ffffffffa0217fd8>] vcpu_load+0x1a/0x66 [kvm] stack backtrace: Pid: 3796, comm: qemu-system-x86 Not tainted 2.6.34 #25 Call Trace: [<ffffffff81070ed1>] lockdep_rcu_dereference+0x9d/0xa5 [<ffffffffa0214fdf>] gfn_to_memslot_unaliased+0x65/0xa0 [kvm] [<ffffffffa0216139>] gfn_to_hva+0x22/0x4c [kvm] [<ffffffffa0216217>] kvm_write_guest_page+0x2a/0x7f [kvm] [<ffffffffa0216286>] kvm_clear_guest_page+0x1a/0x1c [kvm] [<ffffffffa0278239>] init_rmode+0x3b/0x180 [kvm_intel] [<ffffffffa02786ce>] vmx_set_cr0+0x350/0x4d3 [kvm_intel] [<ffffffffa02274ff>] kvm_arch_vcpu_ioctl_set_sregs+0x122/0x31a [kvm] [<ffffffffa021859c>] kvm_vcpu_ioctl+0x578/0xa3d [kvm] [<ffffffff8106624c>] ? cpu_clock+0x2d/0x40 [<ffffffff810f7d86>] ? fget_light+0x244/0x28e [<ffffffff810709b9>] ? trace_hardirqs_off_caller+0x1f/0x10e [<ffffffff8110501b>] vfs_ioctl+0x32/0xa6 [<ffffffff81105597>] do_vfs_ioctl+0x47f/0x4b8 [<ffffffff813ae654>] ? sub_preempt_count+0xa3/0xb7 [<ffffffff810f7da8>] ? fget_light+0x266/0x28e [<ffffffff810f7c53>] ? fget_light+0x111/0x28e [<ffffffff81105617>] sys_ioctl+0x47/0x6a [<ffffffff81002c1b>] system_call_fastpath+0x16/0x1b Signed-off-by: -
Gui Jianfeng authored
The name "pid_sync_vcpu_all" isn't appropriate since it just affect a single vpid, so rename it to vpid_sync_vcpu_single(). Signed-off-by:
Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by:
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Gui Jianfeng authored
Add all-context INVVPID type support. Signed-off-by:
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Xiao Guangrong authored
collect remote tlb flush in kvm_mmu_pte_write() path Signed-off-by:
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Xiao Guangrong authored
Now, we can safely to traverse sp hlish Signed-off-by:
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Xiao Guangrong authored
Using kvm_mmu_prepare_zap_page() and kvm_mmu_zap_page() instead of kvm_mmu_zap_page() that can reduce remote tlb flush IPI Signed-off-by:
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Xiao Guangrong authored
In the later patch, we will modify sp's zapping way like below: kvm_mmu_prepare_zap_page A kvm_mmu_prepare_zap_page B kvm_mmu_prepare_zap_page C .... kvm_mmu_commit_zap_page [ zaped multiple sps only need to call kvm_mmu_commit_zap_page once ] In __kvm_mmu_free_some_pages() function, the free page number is getted form 'vcpu->kvm->arch.n_free_mmu_pages' in loop, it will hinders us to apply kvm_mmu_prepare_zap_page() and kvm_mmu_commit_zap_page() since kvm_mmu_prepare_zap_page() not free sp. Signed-off-by:
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Xiao Guangrong authored
Using kvm_mmu_prepare_zap_page() and kvm_mmu_commit_zap_page() to split kvm_mmu_zap_page() function, then we can: - traverse hlist safely - easily to gather remote tlb flush which occurs during page zapped Those feature can be used in the later patches Signed-off-by:
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