- 01 8月, 2010 40 次提交
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由 Xiao Guangrong 提交于
collect remote tlb flush in kvm_mmu_pte_write() path Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Now, we can safely to traverse sp hlish Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
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: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
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: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
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: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Introduce for_each_gfn_sp() and for_each_gfn_indirect_valid_sp() to cleanup hlist traverseing Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
In kvm_mmu_unprotect_page(), the invalid sp can be skipped Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gui Jianfeng 提交于
According to SDM, we need check whether single-context INVVPID type is supported before issuing invvpid instruction. Signed-off-by: NGui Jianfeng <guijianfeng@cn.fujitsu.com> Reviewed-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Lai Jiangshan 提交于
Should use linux/uaccess.h instead of asm/uaccess.h Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Lai Jiangshan 提交于
The type of '*new.rmap' is not 'struct page *', fix it Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Sheng Yang 提交于
We only support 4 levels EPT pagetable now. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Glauber Costa 提交于
This patch adds a file that documents the usage of KVM-specific MSRs. Signed-off-by: NGlauber Costa <glommer@redhat.com> Reviewed-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Andreas Schwab 提交于
Instead of instantiating a whole thread_struct on the stack use only the required parts of it. Signed-off-by: NAndreas Schwab <schwab@linux-m68k.org> Tested-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Mohammed Gamal 提交于
The vmexit handler returns KVM_EXIT_UNKNOWN since there is no handler for vmentry failures. This intercepts vmentry failures and returns KVM_FAIL_ENTRY to userspace instead. Signed-off-by: NMohammed Gamal <m.gamal005@gmail.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Gui Jianfeng 提交于
There's no need to calculate quadrant if tdp is enabled. Signed-off-by: NGui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
When tdp is enabled, the guest's cr0.wp shouldn't have any effect on spte permissions. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Memory allocation may fail. Propagate such errors. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Reviewed-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Zachary Amsden 提交于
Must set VCPU register to be the guest notion of EFER even if that setting is not valid on hardware. This was masked by the set in set_efer until 7657fd5ace88e8092f5f3a84117e093d7b893f26 broke that. Fix is simply to set the VCPU register before stripping bits. Signed-off-by: NZachary Amsden <zamsden@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gui Jianfeng 提交于
Since we have is_writable_pte(), make use of it. Signed-off-by: NGui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Lai Jiangshan 提交于
In Documentation/kvm/mmu.txt: gfn: Either the guest page table containing the translations shadowed by this page, or the base page frame for linear translations. See role.direct. But in function FNAME(fetch)(), sp->gfn is incorrect when one of following situations occurred: 1) guest is 32bit paging and the guest PDE maps a 4-MByte page (backed by 4k host pages), FNAME(fetch)() miss handling the quadrant. And if guest use pse-36, "table_gfn = gpte_to_gfn(gw->ptes[level - delta]);" is incorrect. 2) guest is long mode paging and the guest PDPTE maps a 1-GByte page (backed by 4k or 2M host pages). So we fix it to suit to the document and suit to the code which requires sp->gfn correct when sp->role.direct=1. We use the goal mapping gfn(gw->gfn) to calculate the base page frame for linear translations, it is simple and easy to be understood. Reported-by: NMarcelo Tosatti <mtosatti@redhat.com> Reported-by: NGui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Lai Jiangshan 提交于
In Document/kvm/mmu.txt: gfn: Either the guest page table containing the translations shadowed by this page, or the base page frame for linear translations. See role.direct. But in __direct_map(), the base gfn calculation is incorrect, it does not calculate correctly when level=3 or 4. Fix by using PT64_LVL_ADDR_MASK() which accounts for all levels correctly. Reported-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Lai Jiangshan 提交于
When sp->role.direct is set, sp->gfns does not contain any essential information, leaf sptes reachable from this sp are for a continuous guest physical memory range (a linear range). So sp->gfns[i] (if it was set) equals to sp->gfn + i. (PT_PAGE_TABLE_LEVEL) Obviously, it is not essential information, we can calculate it when need. It means we don't need sp->gfns when sp->role.direct=1, Thus we can save one page usage for every kvm_mmu_page. Note: Access to sp->gfns must be wrapped by kvm_mmu_page_get_gfn() or kvm_mmu_page_set_gfn(). It is only exposed in FNAME(sync_page). Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Mohammed Gamal 提交于
For the sake of completeness, this patch adds a symbolic constant for VMX exit reason 0x21 (invalid guest state). Signed-off-by: NMohammed Gamal <m.gamal005@gmail.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Allow more page become asynchronous at getting sp time, if need create new shadow page for gfn but it not allow unsync(level > 1), we should unsync all gfn's unsync page Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
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: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
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: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Only unsync pages need updated at invlpg time since other shadow pages are write-protected Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
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: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
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: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
Convert KVM to use generic FPU API. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
We can avoid unnecessary fpu load when userspace process didn't use FPU frequently. Derived from Avi's idea. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
Also add some constants. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Now that all arch specific ioctls have centralized locking, it is easy to move it to the central dispatcher. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@redhat.com>
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