Displaying 8 results from an estimated 8 matches for "x86emul_propagate_fault".
2020 Feb 07
0
[RFC PATCH v7 34/78] KVM: x86: intercept the write access on sidt and other emulated instructions
...rtions(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8c6a8d03e41a..6e665341cc80 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5450,11 +5450,14 @@ static int kvm_write_guest_virt_helper(gva_t addr, void *val, unsigned int bytes
if (gpa == UNMAPPED_GVA)
return X86EMUL_PROPAGATE_FAULT;
+ if (!kvm_page_track_prewrite(vcpu, gpa, addr, data, towrite))
+ return X86EMUL_RETRY_INSTR;
ret = kvm_vcpu_write_guest(vcpu, gpa, data, towrite);
if (ret < 0) {
r = X86EMUL_IO_NEEDED;
goto out;
}
+ kvm_page_track_write(vcpu, gpa, addr, data, towrite);
bytes -= towrit...
2020 Feb 07
0
[RFC PATCH v7 09/78] KVM: x86: avoid injecting #PF when emulate the VMCALL instruction
...xt);
char instruction[3];
unsigned long rip = kvm_rip_read(vcpu);
+ int err;
kvm_x86_ops->patch_hypercall(vcpu, instruction);
- return emulator_write_emulated(ctxt, rip, instruction, 3,
+ err = emulator_write_emulated(ctxt, rip, instruction, 3,
&ctxt->exception);
+ if (err == X86EMUL_PROPAGATE_FAULT)
+ err = X86EMUL_CONTINUE;
+ return err;
}
static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu)
2020 Jul 21
0
[PATCH v9 08/84] KVM: x86: avoid injecting #PF when emulate the VMCALL instruction
...u(ctxt);
char instruction[3];
unsigned long rip = kvm_rip_read(vcpu);
+ int err;
kvm_x86_ops.patch_hypercall(vcpu, instruction);
- return emulator_write_emulated(ctxt, rip, instruction, 3,
+ err = emulator_write_emulated(ctxt, rip, instruction, 3,
&ctxt->exception);
+ if (err == X86EMUL_PROPAGATE_FAULT)
+ err = X86EMUL_CONTINUE;
+ return err;
}
static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu)
2020 Feb 07
0
[RFC PATCH v7 30/78] KVM: x86: page track: provide all page tracking hooks with the guest virtual address
...{
- return emulator_write_phys(vcpu, gpa, val, bytes);
+ return emulator_write_phys(vcpu, gpa, gva, val, bytes);
}
static int write_mmio(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes, void *val)
@@ -5668,7 +5668,7 @@ static int emulator_read_write_onepage(unsigned long addr, void *val,
return X86EMUL_PROPAGATE_FAULT;
}
- if (!ret && ops->read_write_emulate(vcpu, gpa, val, bytes))
+ if (!ret && ops->read_write_emulate(vcpu, gpa, addr, val, bytes))
return X86EMUL_CONTINUE;
/*
@@ -5827,7 +5827,7 @@ static int emulator_cmpxchg_emulated(struct x86_emulate_ctxt *ctxt,
if (!exchange...
2020 Feb 07
78
[RFC PATCH v7 00/78] VM introspection
The KVM introspection subsystem provides a facility for applications
running on the host or in a separate VM, to control the execution of
other VMs (pause, resume, shutdown), query the state of the vCPUs (GPRs,
MSRs etc.), alter the page access bits in the shadow page tables (only
for the hardware backed ones, eg. Intel's EPT) and receive notifications
when events of interest have taken place
2020 Jul 21
87
[PATCH v9 00/84] VM introspection
The KVM introspection subsystem provides a facility for applications
running on the host or in a separate VM, to control the execution of
other VMs (pause, resume, shutdown), query the state of the vCPUs (GPRs,
MSRs etc.), alter the page access bits in the shadow page tables (only
for the hardware backed ones, eg. Intel's EPT) and receive notifications
when events of interest have taken place
2019 Aug 09
117
[RFC PATCH v6 00/92] VM introspection
The KVM introspection subsystem provides a facility for applications running
on the host or in a separate VM, to control the execution of other VM-s
(pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.),
alter the page access bits in the shadow page tables (only for the hardware
backed ones, eg. Intel's EPT) and receive notifications when events of
interest have taken place
2019 Aug 09
117
[RFC PATCH v6 00/92] VM introspection
The KVM introspection subsystem provides a facility for applications running
on the host or in a separate VM, to control the execution of other VM-s
(pause, resume, shutdown), query the state of the vCPUs (GPRs, MSRs etc.),
alter the page access bits in the shadow page tables (only for the hardware
backed ones, eg. Intel's EPT) and receive notifications when events of
interest have taken place