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| author | David S. Miller <davem@davemloft.net> | 2017-07-21 03:38:43 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-21 03:38:43 +0100 |
| commit | 7a68ada6ec7d88c68057d3a4c2a517eb94289976 (patch) | |
| tree | 51cd586e74fc92bfbdf382fa1544a235d908b25c /arch/x86/kvm/mmu.c | |
| parent | 760446f967678e14ee1b6464ee1bb8562f299fa6 (diff) | |
| parent | 96080f697786e0a30006fcbcc5b53f350fcb3e9f (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index aafd399cf8c6..9b1dd114956a 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -46,6 +46,7 @@ #include <asm/io.h> #include <asm/vmx.h> #include <asm/kvm_page_track.h> +#include "trace.h" /* * When setting this variable to true it enables Two-Dimensional-Paging @@ -3748,7 +3749,7 @@ bool kvm_can_do_async_pf(struct kvm_vcpu *vcpu) kvm_event_needs_reinjection(vcpu))) return false; - if (is_guest_mode(vcpu)) + if (!vcpu->arch.apf.delivery_as_pf_vmexit && is_guest_mode(vcpu)) return false; return kvm_x86_ops->interrupt_allowed(vcpu); @@ -3780,6 +3781,38 @@ static bool try_async_pf(struct kvm_vcpu *vcpu, bool prefault, gfn_t gfn, return false; } +int kvm_handle_page_fault(struct kvm_vcpu *vcpu, u64 error_code, + u64 fault_address, char *insn, int insn_len, + bool need_unprotect) +{ + int r = 1; + + switch (vcpu->arch.apf.host_apf_reason) { + default: + trace_kvm_page_fault(fault_address, error_code); + + if (need_unprotect && kvm_event_needs_reinjection(vcpu)) + kvm_mmu_unprotect_page_virt(vcpu, fault_address); + r = kvm_mmu_page_fault(vcpu, fault_address, error_code, insn, + insn_len); + break; + case KVM_PV_REASON_PAGE_NOT_PRESENT: + vcpu->arch.apf.host_apf_reason = 0; + local_irq_disable(); + kvm_async_pf_task_wait(fault_address); + local_irq_enable(); + break; + case KVM_PV_REASON_PAGE_READY: + vcpu->arch.apf.host_apf_reason = 0; + local_irq_disable(); + kvm_async_pf_task_wake(fault_address); + local_irq_enable(); + break; + } + return r; +} +EXPORT_SYMBOL_GPL(kvm_handle_page_fault); + static bool check_hugepage_cache_consistency(struct kvm_vcpu *vcpu, gfn_t gfn, int level) { |