- 12 Jan, 2011 40 commits
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Xiao Guangrong authored
Retry #PF is the speculative path, so don't set the accessed bit Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
It's the speculative path if 'no_apf = 1' and we will specially handle this speculative path in the later patch, so 'prefault' is better to fit the sense. Signed-off-by:
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Joerg Roedel authored
This patch implements the clean-bit for all LBR related state. This includes the debugctl, br_from, br_to, last_excp_from, and last_excp_to msrs. Signed-off-by:
Joerg Roedel <joerg.roedel@amd.com> Signed-off-by:
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Joerg Roedel authored
This patch implements the clean-bit for the cr2 register in the vmcb. Signed-off-by:
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Joerg Roedel authored
This patch implements the clean-bit defined for the cs, ds, ss, an es segemnts and the current cpl saved in the vmcb. Signed-off-by:
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Joerg Roedel authored
This patch implements the clean-bit for the base and limit of the gdt and idt in the vmcb. Signed-off-by:
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Joerg Roedel authored
This patch implements the clean-bit for the dr6 and dr7 debug registers in the vmcb. Signed-off-by:
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Joerg Roedel authored
This patch implements the CRx clean-bit for the vmcb. This bit covers cr0, cr3, cr4, and efer. Signed-off-by:
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Joerg Roedel authored
This patch implements the clean-bit for all nested paging related state in the vmcb. Signed-off-by:
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Joerg Roedel authored
This patch implements the clean-bit for all interrupt related state in the vmcb. This corresponds to vmcb offset 0x60-0x67. Signed-off-by:
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Joerg Roedel authored
This patch implements the clean-bit for the asid in the vmcb. Signed-off-by:
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Joerg Roedel authored
This patch adds the clean bit for the physical addresses of the MSRPM and the IOPM. It does not need to be set in the code because the only place where these values are changed is the nested-svm vmrun and vmexit path. These functions already mark the complete VMCB as dirty. Signed-off-by:
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Joerg Roedel authored
This patch adds the clean-bit for intercepts-vectors, the TSC offset and the pause-filter count to the appropriate places. The IO and MSR permission bitmaps are not subject to this bit. Signed-off-by:
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Roedel, Joerg authored
This patch adds the infrastructure for the implementation of the individual clean-bits. Signed-off-by:
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Takuya Yoshikawa authored
One more "KVM: MMU: Don't drop accessed bit while updating an spte." Sptes are accessed by both kvm and hardware. This patch uses update_spte() to fix the way of removing write access. Signed-off-by:
Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by:
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Avi Kivity authored
If we execute VMREAD during reboot we'll just skip over it. Instead of returning garbage, return 0, which has a much smaller chance of confusing the code. Otherwise we risk a flood of debug printk()s which block the reboot process if a serial console or netconsole is enabled. Signed-off-by: -
Avi Kivity authored
Since vmx blocks INIT signals, we disable virtualization extensions during reboot. This leads to virtualization instructions faulting; we trap these faults and spin while the reboot continues. Unfortunately spinning on a non-preemptible kernel may block a task that reboot depends on; this causes the reboot to hang. Fix by skipping over the instruction and hoping for the best. Signed-off-by: -
Joerg Roedel authored
This patch replaces the open-coded vmcb-selection for the TSC calculation with the new get_host_vmcb helper function introduced in this patchset. Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>
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Joerg Roedel authored
This patch wraps changes to the misc intercepts of SVM into seperate functions to abstract nested-svm better and prepare the implementation of the vmcb-clean-bits feature. Signed-off-by:
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Joerg Roedel authored
This patch wraps changes to the exception intercepts of SVM into seperate functions to abstract nested-svm better and prepare the implementation of the vmcb-clean-bits feature. Signed-off-by:
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Joerg Roedel authored
This patch wraps changes to the DRx intercepts of SVM into seperate functions to abstract nested-svm better and prepare the implementation of the vmcb-clean-bits feature. Signed-off-by:
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Roedel, Joerg authored
This patch wraps changes to the CRx intercepts of SVM into seperate functions to abstract nested-svm better and prepare the implementation of the vmcb-clean-bits feature. Signed-off-by:
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Joerg Roedel authored
This patch adds a function to recalculate the effective intercepts masks when the vcpu is in guest-mode and either the host or the guest intercept masks change. Signed-off-by:
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Joerg Roedel authored
This patch prevents that emulation failures which result from emulating an instruction for an L2-Guest results in being reported to userspace. Without this patch a malicious L2-Guest would be able to kill the L1 by triggering a race-condition between an vmexit and the instruction emulator. With this patch the L2 will most likely only kill itself in this situation. Signed-off-by:
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Joerg Roedel authored
This patch replaces the is_nested logic in the SVM module with the generic notion of guest-mode. Signed-off-by:
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Joerg Roedel authored
This patch introduces a generic representation of guest-mode fpr a vcpu. This currently only exists in the SVM code. Having this representation generic will help making the non-svm code aware of nesting when this is necessary. Signed-off-by:
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Avi Kivity authored
Currently page fault cr2 and nesting infomation are carried outside the fault data structure. Instead they are placed in the vcpu struct, which results in confusion as global variables are manipulated instead of passing parameters. Fix this issue by adding address and nested fields to struct x86_exception, so this struct can carry all information associated with a fault. Signed-off-by:
Gleb Natapov <gleb@redhat.com> Signed-off-by:
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Avi Kivity authored
Signed-off-by:
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Avi Kivity authored
Signed-off-by:
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Avi Kivity authored
Immediately after we generate an exception, we want a X86EMUL_PROPAGATE_FAULT constant, so return it from the generation functions. Signed-off-by:
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Avi Kivity authored
Instead of checking for X86EMUL_PROPAGATE_FAULT, check for any error, making the callers more reliable. Signed-off-by:
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Avi Kivity authored
If rc == X86EMUL_PROPAGATE_FAULT, we would have returned earlier. Signed-off-by:
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Avi Kivity authored
This way, they can return #GP, not just #PF. Signed-off-by:
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Avi Kivity authored
Introduce a structure that can contain an exception to be passed back to main kvm code. Signed-off-by:
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Xiao Guangrong authored
Quote from Avi: | I don't think we need to flush immediately; set a "tlb dirty" bit somewhere | that is cleareded when we flush the tlb. kvm_mmu_notifier_invalidate_page() | can consult the bit and force a flush if set. Signed-off-by:
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Xiao Guangrong authored
Introduce a common function to map invalid gpte Signed-off-by:
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Xiao Guangrong authored
Remove it since we can judge it by using sp->unsync Signed-off-by:
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Lai Jiangshan authored
Rename it to fit its sense better Signed-off-by:
Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by:
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Xiao Guangrong authored
We just need flush tlb if overwrite a writable spte with a read-only one. And we should move this operation to set_spte() for sync_page path Signed-off-by:
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Xiao Guangrong authored
We should flush all tlbs after drop spte on sync_page path since Quote from Avi: | sync_page | drop_spte | kvm_mmu_notifier_invalidate_page | kvm_unmap_rmapp | spte doesn't exist -> no flush | page is freed | guest can write into freed page? KVM-Stable-Tag. Signed-off-by:
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