search for: kvmi_vm_get_max_gfn

...tion/virt/kvm/kvmi.rst +++ b/Documentation/virt/kvm/kvmi.rst @@ -735,6 +735,26 @@ order to be notified about the effective injected expection. * -KVM_EBUSY - another *KVMI_VCPU_INJECT_EXCEPTION* command was issued and no corresponding *KVMI_EVENT_TRAP* (if enabled) has been provided yet. +16. KVMI_VM_GET_MAX_GFN +----------------------- + +:Architecture: all +:Versions: >= 1 +:Parameters: none +:Returns: + +:: + + struct kvmi_error_code; + struct kvmi_vm_get_max_gfn_reply { + __u64 gfn; + }; + +Provides the maximum GFN allocated to the VM by walking through all +memor...

..."KVMI_GET_VERSION", - [KVMI_VM_CHECK_COMMAND] = "KVMI_VM_CHECK_COMMAND", - [KVMI_VM_CHECK_EVENT] = "KVMI_VM_CHECK_EVENT", - [KVMI_VM_CONTROL_EVENTS] = "KVMI_VM_CONTROL_EVENTS", - [KVMI_VM_GET_INFO] = "KVMI_VM_GET_INFO", - [KVMI_VM_GET_MAX_GFN] = "KVMI_VM_GET_MAX_GFN", - [KVMI_VM_READ_PHYSICAL] = "KVMI_VM_READ_PHYSICAL", - [KVMI_VM_SET_PAGE_ACCESS] = "KVMI_VM_SET_PAGE_ACCESS", - [KVMI_VM_WRITE_PHYSICAL] = "KVMI_VM_WRITE_PHYSICAL", - [KVMI_VCPU_CONTROL_CR] = "KVMI_VCPU_...

From: ?tefan ?icleru <ssicleru at bitdefender.com> This function is needed for the KVMI_VM_GET_MAX_GFN command. Signed-off-by: ?tefan ?icleru <ssicleru at bitdefender.com> Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 24 ++++++++++++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/include/linux/kvm...

...d access bits, are also kept in a radix tree in order to filter out the #PF events which are of no interest to the introspection tool. The access restrictions for pages that are not visible to the guest are silently ignored by default (the tool might set restrictions for the whole memory, based on KVMI_VM_GET_MAX_GFN). Signed-off-by: Mihai Don?u <mdontu at bitdefender.com> Co-developed-by: Adalbert Laz?r <alazar at bitdefender.com> Signed-off-by: Adalbert Laz?r <alazar at bitdefender.com> --- Documentation/virt/kvm/kvmi.rst | 60 ++++++ arch/x86/include/asm/kvm_host.h...

...pa, u8 *type) +{ + *type = kvm_mtrr_get_guest_memory_type(vcpu, gpa_to_gfn(gpa)); + + return 0; +} diff --git a/include/uapi/linux/kvmi.h b/include/uapi/linux/kvmi.h index 441586cec238..207bcaeec05a 100644 --- a/include/uapi/linux/kvmi.h +++ b/include/uapi/linux/kvmi.h @@ -39,9 +39,10 @@ enum { KVMI_VM_GET_MAX_GFN = 17, - KVMI_VCPU_GET_XCR = 18, - KVMI_VCPU_GET_XSAVE = 19, - KVMI_VCPU_SET_XSAVE = 20, + KVMI_VCPU_GET_XCR = 18, + KVMI_VCPU_GET_XSAVE = 19, + KVMI_VCPU_SET_XSAVE = 20, + KVMI_VCPU_GET_MTRR_TYPE = 21, KVMI_NUM_MESSAGES }; diff --git a/tools/testing/selftests/kvm/x86_64/kvmi_te...

...kvm_vcpu_ioctl_x86_get_xsave(vcpu, area); + + *dest = rpl; + *dest_size = rpl_size; + + return 0; +} diff --git a/include/uapi/linux/kvmi.h b/include/uapi/linux/kvmi.h index d1c564ff3d6c..6b5662f54ba1 100644 --- a/include/uapi/linux/kvmi.h +++ b/include/uapi/linux/kvmi.h @@ -40,6 +40,7 @@ enum { KVMI_VM_GET_MAX_GFN = 17, KVMI_VCPU_GET_XCR = 18, + KVMI_VCPU_GET_XSAVE = 19, KVMI_NUM_MESSAGES }; diff --git a/tools/testing/selftests/kvm/x86_64/kvmi_test.c b/tools/testing/selftests/kvm/x86_64/kvmi_test.c index 8b92ff7cee6b..657684ec6ff5 100644 --- a/tools/testing/selftests/kvm/x86_64/kvmi_test.c +++ b/too...

...if (req->xcr != 0) + return -KVM_EINVAL; + + rpl->value = vcpu->arch.xcr0; + return 0; +} diff --git a/include/uapi/linux/kvmi.h b/include/uapi/linux/kvmi.h index 348a9a551091..d1c564ff3d6c 100644 --- a/include/uapi/linux/kvmi.h +++ b/include/uapi/linux/kvmi.h @@ -39,6 +39,8 @@ enum { KVMI_VM_GET_MAX_GFN = 17, + KVMI_VCPU_GET_XCR = 18, + KVMI_NUM_MESSAGES }; diff --git a/tools/testing/selftests/kvm/x86_64/kvmi_test.c b/tools/testing/selftests/kvm/x86_64/kvmi_test.c index 0569185a7064..8b92ff7cee6b 100644 --- a/tools/testing/selftests/kvm/x86_64/kvmi_test.c +++ b/tools/testing/selftests/kvm/x...

...vm_vcpu_ioctl_x86_get_xsave(vcpu, area); + + *dest = rpl; + *dest_size = rpl_size; + + return 0; +} diff --git a/include/uapi/linux/kvmi.h b/include/uapi/linux/kvmi.h index 3ea4882ac469..bc63c04a543d 100644 --- a/include/uapi/linux/kvmi.h +++ b/include/uapi/linux/kvmi.h @@ -37,6 +37,8 @@ enum { KVMI_VM_GET_MAX_GFN = 17, + KVMI_VCPU_GET_XSAVE = 18, + KVMI_NUM_MESSAGES }; diff --git a/tools/testing/selftests/kvm/x86_64/kvmi_test.c b/tools/testing/selftests/kvm/x86_64/kvmi_test.c index 299f4d29d0d6..638491f33138 100644 --- a/tools/testing/selftests/kvm/x86_64/kvmi_test.c +++ b/tools/testing/selftests/kvm...

...the state of descriptor interception on unhook KVM: introspection: restore the state of MSR interception on unhook KVM: introspection: add KVMI_VCPU_CONTROL_SINGLESTEP KVM: introspection: add KVMI_EVENT_SINGLESTEP ?tefan ?icleru (2): KVM: add kvm_get_max_gfn() KVM: introspection: add KVMI_VM_GET_MAX_GFN Documentation/virt/kvm/api.txt | 115 + Documentation/virt/kvm/hypercalls.txt | 36 +- Documentation/virt/kvm/kvmi.rst | 1413 +++++++++++++ arch/x86/include/asm/kvm_emulate.h | 1 + arch/x86/include/asm/kvm_host.h | 36 +- arc...

...m_page_preread/kvm_page_prewrite, are not invoked) Changes since v8: - rebase on 5.8 - fix non-x86 builds (avoid including the UAPI headers from kvmi_host.h) - fix the clean-up for KVMI_VCPU_SINGLESTEP [Mathieu] - extend KVMI_VM_SET_PAGE_ACCESS with the 'visible' option - improve KVMI_VM_GET_MAX_GFN (skip read-only, invalid or non-user memslots) - add KVMI_VM_CONTROL_CLEANUP [Tamas, Mathieu] - add KVMI_VCPU_GET_XCR and KVMI_VCPU_SET_XSAVE (SSE emulation) - move KVM_REQ_INTROSPECTION in the range of arch-independent requests - better split of x86 vs arch-independent code - cover more...

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