Displaying 9 results from an estimated 9 matches for "kvmi_page_access_r".
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kvmi_page_access_w
2020 Jul 21
0
[PATCH v9 77/84] KVM: introspection: add KVMI_VM_SET_PAGE_ACCESS
...where::
+
+ struct kvmi_page_access_entry {
+ __u64 gpa;
+ __u8 access;
+ __u8 visible;
+ __u16 padding1;
+ __u32 padding2;
+ };
+
+
+:Returns:
+
+::
+
+ struct kvmi_error_code
+
+Sets the access bits (rwx) for an array of ``count`` guest physical
+addresses.
+
+The valid access bits are::
+
+ KVMI_PAGE_ACCESS_R
+ KVMI_PAGE_ACCESS_W
+ KVMI_PAGE_ACCESS_X
+
+
+The command will fail with -KVM_EINVAL if any of the specified combination
+of access bits is not supported. Also, if ``visible`` is set to 1 but
+the page is not visible.
+
+The command will try to apply all changes and return the first error if
+some...
2019 Aug 09
0
[RFC PATCH v6 27/92] kvm: introspection: use page track
...i_arch_cmd_get_vcpu_info(struct kvm_vcpu *vcpu,
struct kvmi_get_vcpu_info_reply *rpl)
{
@@ -102,3 +108,42 @@ int kvmi_arch_cmd_get_vcpu_info(struct kvm_vcpu *vcpu,
return 0;
}
+static const struct {
+ unsigned int allow_bit;
+ enum kvm_page_track_mode track_mode;
+} track_modes[] = {
+ { KVMI_PAGE_ACCESS_R, KVM_PAGE_TRACK_PREREAD },
+ { KVMI_PAGE_ACCESS_W, KVM_PAGE_TRACK_PREWRITE },
+ { KVMI_PAGE_ACCESS_X, KVM_PAGE_TRACK_PREEXEC },
+};
+
+void kvmi_arch_update_page_tracking(struct kvm *kvm,
+ struct kvm_memory_slot *slot,
+ struct kvmi_mem_access *m)
+{
+ struct kvmi_arch_mem_access *ar...
2020 Jul 22
34
[RFC PATCH v1 00/34] VM introspection - EPT Views and Virtualization Exceptions
This patch series is based on the VM introspection patches
(https://lore.kernel.org/kvm/20200721210922.7646-1-alazar at bitdefender.com/),
extending the introspection API with EPT Views and Virtualization
Exceptions (#VE) support.
The purpose of this series is to get an initial feedback and to see if
we are on the right track, especially because the changes made to add
the EPT views are not small
2019 Aug 09
0
[RFC PATCH v6 64/92] kvm: introspection: add single-stepping
...or from the hardware, as it's the case
+ * for x86 where this access mode is used to mark I/O memory.
+ * Thus, we make sure that -wx accesses are translated to rwx.
+ */
+ if ((ret & (KVMI_PAGE_ACCESS_W | KVMI_PAGE_ACCESS_X)) ==
+ (KVMI_PAGE_ACCESS_W | KVMI_PAGE_ACCESS_X))
+ ret |= KVMI_PAGE_ACCESS_R;
+
+ return ret;
+}
+
static const struct {
unsigned int allow_bit;
enum kvm_page_track_mode track_mode;
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index b178b8900660..3481c0247680 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -7183,6 +7183,10 @@ static bool svm_spt_fau...
2019 Aug 12
1
[RFC PATCH v6 64/92] kvm: introspection: add single-stepping
...9;s the case
> + * for x86 where this access mode is used to mark I/O memory.
> + * Thus, we make sure that -wx accesses are translated to rwx.
> + */
> + if ((ret & (KVMI_PAGE_ACCESS_W | KVMI_PAGE_ACCESS_X)) ==
> + (KVMI_PAGE_ACCESS_W | KVMI_PAGE_ACCESS_X))
> + ret |= KVMI_PAGE_ACCESS_R;
> +
> + return ret;
> +}
> +
> static const struct {
> unsigned int allow_bit;
> enum kvm_page_track_mode track_mode;
> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> index b178b8900660..3481c0247680 100644
> --- a/arch/x86/kvm/svm.c
> +++ b/arch/x86/k...
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
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
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