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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-09-11 17:42:14 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-09-11 17:42:14 +0200 |
| commit | a0a4a2cb0d69446c084792a40884d911dfc3cf27 (patch) | |
| tree | c7d4bdaa80933704f4fc4be1e5dfb8c1951e3b73 /arch | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 (diff) | |
| parent | KVM: VMX: Always return old for clear_flush_young() when using EPT (diff) | |
| download | linux-a0a4a2cb0d69446c084792a40884d911dfc3cf27.tar.xz linux-a0a4a2cb0d69446c084792a40884d911dfc3cf27.zip | |
Merge branch 'kvm-updates/2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates/2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
KVM: VMX: Always return old for clear_flush_young() when using EPT
KVM: SVM: fix guest global tlb flushes with NPT
KVM: SVM: fix random segfaults with NPT enabled
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/svm.c | 12 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 3 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.h | 2 |
4 files changed, 17 insertions, 4 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 0bfe2bd305eb..3da2508eb22a 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -711,6 +711,10 @@ static int kvm_age_rmapp(struct kvm *kvm, unsigned long *rmapp) u64 *spte; int young = 0; + /* always return old for EPT */ + if (!shadow_accessed_mask) + return 0; + spte = rmap_next(kvm, rmapp, NULL); while (spte) { int _young; diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index e2ee264740c7..8233b86c778c 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -62,6 +62,7 @@ static int npt = 1; module_param(npt, int, S_IRUGO); static void kvm_reput_irq(struct vcpu_svm *svm); +static void svm_flush_tlb(struct kvm_vcpu *vcpu); static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu) { @@ -878,6 +879,10 @@ set: static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4) { unsigned long host_cr4_mce = read_cr4() & X86_CR4_MCE; + unsigned long old_cr4 = to_svm(vcpu)->vmcb->save.cr4; + + if (npt_enabled && ((old_cr4 ^ cr4) & X86_CR4_PGE)) + force_new_asid(vcpu); vcpu->arch.cr4 = cr4; if (!npt_enabled) @@ -1027,6 +1032,13 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) KVMTRACE_3D(TDP_FAULT, &svm->vcpu, error_code, (u32)fault_address, (u32)(fault_address >> 32), handler); + /* + * FIXME: Tis shouldn't be necessary here, but there is a flush + * missing in the MMU code. Until we find this bug, flush the + * complete TLB here on an NPF + */ + if (npt_enabled) + svm_flush_tlb(&svm->vcpu); if (event_injection) kvm_mmu_unprotect_page_virt(&svm->vcpu, fault_address); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 2a69773e3b26..7041cc52b562 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3301,8 +3301,7 @@ static int __init vmx_init(void) kvm_mmu_set_base_ptes(VMX_EPT_READABLE_MASK | VMX_EPT_WRITABLE_MASK | VMX_EPT_DEFAULT_MT << VMX_EPT_MT_EPTE_SHIFT); - kvm_mmu_set_mask_ptes(0ull, VMX_EPT_FAKE_ACCESSED_MASK, - VMX_EPT_FAKE_DIRTY_MASK, 0ull, + kvm_mmu_set_mask_ptes(0ull, 0ull, 0ull, 0ull, VMX_EPT_EXECUTABLE_MASK); kvm_enable_tdp(); } else diff --git a/arch/x86/kvm/vmx.h b/arch/x86/kvm/vmx.h index 425a13436b3f..23e8373507ad 100644 --- a/arch/x86/kvm/vmx.h +++ b/arch/x86/kvm/vmx.h @@ -370,8 +370,6 @@ enum vmcs_field { #define VMX_EPT_READABLE_MASK 0x1ull #define VMX_EPT_WRITABLE_MASK 0x2ull #define VMX_EPT_EXECUTABLE_MASK 0x4ull -#define VMX_EPT_FAKE_ACCESSED_MASK (1ull << 62) -#define VMX_EPT_FAKE_DIRTY_MASK (1ull << 63) #define VMX_EPT_IDENTITY_PAGETABLE_ADDR 0xfffbc000ul |