Hi "Adalbert,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
c
On Tue, Nov 24, 2020 at 6:38 AM Thomas Zimmermann wrote:
>
> Using struct drm_device.pdev is deprecated. Convert amdgpu to struct
> drm_device.dev. No functional changes.
>
> Signed-off-by: Thomas Zimmermann
> Cc: Alex Deucher
> Cc: Christian König
There are a few unrelated whitespace
Hi "Adalbert,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
c
Hi "Adalbert,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
c
Hi "Adalbert,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
c
Hi "Adalbert,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
c
Hi "Adalbert,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
c
On Tue, Nov 24, 2020 at 6:39 AM Thomas Zimmermann wrote:
>
> Using struct drm_device.pdev is deprecated. Convert radeon to struct
> drm_device.dev. No functional changes.
>
> Signed-off-by: Thomas Zimmermann
> Cc: Alex Deucher
> Cc: Christian König
There are a few unrelated whitespace
Hi "Adalbert,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
config: x
Hi "Adalbert,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
config:
On Tue, Nov 24, 2020 at 11:05 PM James Bottomley
wrote:
>
> On Tue, 2020-11-24 at 13:32 -0800, Kees Cook wrote:
> > We already enable -Wimplicit-fallthrough globally, so that's not the
> > discussion. The issue is that Clang is (correctly) even more strict
> > than GCC for this, so these are the
Hi "Adalbert,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
c
From: Mike Christie
[ Upstream commit 25b98b64e28423b0769313dcaf96423836b1f93d ]
We currently are limited to 256 cmds per session. This leads to problems
where if the user has increased virtqueue_size to more than 2 or
cmd_per_lun to more than 256 vhost_scsi_get_tag can fail and the guest
will
From: Mike Christie
[ Upstream commit efd838fec17bd8756da852a435800a7e6281bfbc ]
In newer versions of virtio-scsi we just reset the timer when an a
command times out, so TMFs are never sent for the cmd time out case.
However, in older kernels and for the TMF inject cases, we can still get
From: Laurent Vivier
[ Upstream commit a312db697cb05dfa781848afe8585a1e1f2a5a99 ]
ERROR: modpost: "mac_pton" [drivers/vdpa/vdpa_sim/vdpa_sim.ko] undefined!
mac_pton() is defined in lib/net_utils.c and is not built if NET is not set.
Select GENERIC_NET_UTILS as vdpasim doesn't depend on
From: Mike Christie
[ Upstream commit 6bcf34224ac1e94103797fd68b9836061762f2b2 ]
This adds a helper check if a vq has been setup. The next patches
will use this when we move the vhost scsi cmd preallocation from per
session to per vq. In the per vq case, we only want to allocate cmds
for vqs
From: Mike Christie
[ Upstream commit 47a3565e8bb14ec48a75b48daf57aa830e2691f8 ]
We might not do the final se_cmd put from vhost_scsi_complete_cmd_work.
When the last put happens a little later then we could race where
vhost_scsi_complete_cmd_work does vhost_signal, the guest runs and sends
From: Mike Christie
[ Upstream commit 18f1becb6948cd411fd01968a0a54af63732e73c ]
Move code to parse lun from req's lun_buf to helper, so tmf code
can use it in the next patch.
Signed-off-by: Mike Christie
Reviewed-by: Paolo Bonzini
Acked-by: Jason Wang
Link:
From: Mathias Crombez
Without multi-touch slots allocated, ABS_MT_SLOT events will be lost by
input_handle_abs_event.
Signed-off-by: Mathias Crombez
Signed-off-by: Vasyl Vavrychuk
Tested-by: Vasyl Vavrychuk
---
drivers/virtio/Kconfig| 11 +++
drivers/virtio/virtio_input.c |
Hi "Adalbert,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
c
From: Mike Christie
[ Upstream commit 18f1becb6948cd411fd01968a0a54af63732e73c ]
Move code to parse lun from req's lun_buf to helper, so tmf code
can use it in the next patch.
Signed-off-by: Mike Christie
Reviewed-by: Paolo Bonzini
Acked-by: Jason Wang
Link:
From: Mike Christie
[ Upstream commit efd838fec17bd8756da852a435800a7e6281bfbc ]
In newer versions of virtio-scsi we just reset the timer when an a
command times out, so TMFs are never sent for the cmd time out case.
However, in older kernels and for the TMF inject cases, we can still get
From: Mike Christie
[ Upstream commit 47a3565e8bb14ec48a75b48daf57aa830e2691f8 ]
We might not do the final se_cmd put from vhost_scsi_complete_cmd_work.
When the last put happens a little later then we could race where
vhost_scsi_complete_cmd_work does vhost_signal, the guest runs and sends
Hi "Adalbert,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on dc924b062488a0376aae41d3e0a27dc99f852a5e]
url:
https://github.com/0day-ci/linux/commits/Adalbert-Laz-r/VM-introspection/20201125-174530
base:dc924b062488a0376aae41d3e0a27dc99f852a5e
config:
On 25/11/20 16:35, Sasha Levin wrote:
From: Mike Christie
[ Upstream commit 18f1becb6948cd411fd01968a0a54af63732e73c ]
Move code to parse lun from req's lun_buf to helper, so tmf code
can use it in the next patch.
Signed-off-by: Mike Christie
Reviewed-by: Paolo Bonzini
Acked-by: Jason Wang
On Tue, Nov 24, 2020 at 11:05:35PM -0800, James Bottomley wrote:
> Now, what we have seems to be about 6 cases (at least what's been shown
> in this thread) where a missing break would cause potentially user
> visible issues. That means the value of this isn't zero, but it's not
> a no-brainer
On Wed, Nov 25, 2020 at 5:24 PM Jakub Kicinski wrote:
>
> And just to spell it out,
>
> case ENUM_VALUE1:
> bla();
> break;
> case ENUM_VALUE2:
> bla();
> default:
> break;
>
> is a fairly idiomatic way of indicating that not all values of the enum
> are expected
On Wed, Nov 25, 2020 at 06:48:21PM +0100, Paolo Bonzini wrote:
On 25/11/20 16:35, Sasha Levin wrote:
From: Mike Christie
[ Upstream commit 18f1becb6948cd411fd01968a0a54af63732e73c ]
Move code to parse lun from req's lun_buf to helper, so tmf code
can use it in the next patch.
Signed-off-by:
On 25/11/20 19:01, Sasha Levin wrote:
On Wed, Nov 25, 2020 at 06:48:21PM +0100, Paolo Bonzini wrote:
On 25/11/20 16:35, Sasha Levin wrote:
From: Mike Christie
[ Upstream commit 18f1becb6948cd411fd01968a0a54af63732e73c ]
Move code to parse lun from req's lun_buf to helper, so tmf code
can
On Wed, Nov 25, 2020 at 8:24 AM Jakub Kicinski wrote:
>
> Applying a real patch set and then getting a few follow ups the next day
> for trivial coding things like fallthrough missing or static missing,
> just because I didn't have the full range of compilers to check with
> before applying makes
On Wed, Nov 25, 2020 at 1:33 PM Finn Thain wrote:
>
> Or do you think that a codebase can somehow satisfy multiple checkers and
> their divergent interpretations of the language spec?
Have we found any cases yet that are divergent? I don't think so. It
sounds to me like GCC's cases it warns for
On 2020/11/25 17:35, Michael S. Tsirkin wrote:
On Mon, Oct 12, 2020 at 09:55:55AM +0800, Jie Deng wrote:
Add an I2C bus driver for virtio para-virtualization.
The controller can be emulated by the backend driver in
any device model software by following the virtio protocol.
This driver
On 2020/11/25 下午8:03, Eugenio Perez Martin wrote:
On Wed, Nov 25, 2020 at 8:09 AM Jason Wang wrote:
On 2020/11/21 上午2:50, Eugenio Pérez wrote:
This series enable vDPA software assisted live migration for vhost-net
devices. This is a new method of vhost devices migration: Instead of
relay on
On 11/25/2020 1:30 AM, Michael S. Tsirkin wrote:
On Thu, Nov 05, 2020 at 06:26:33PM -0500, Si-Wei Liu wrote:
Pinned pages are not properly accounted particularly when
mapping error occurs on IOTLB update. Clean up dangling
pinned pages for the error path.
The memory usage for bookkeeping
On Mon, Oct 12, 2020 at 09:55:55AM +0800, Jie Deng wrote:
> Add an I2C bus driver for virtio para-virtualization.
>
> The controller can be emulated by the backend driver in
> any device model software by following the virtio protocol.
>
> This driver communicates with the backend driver through
On Thu, Nov 05, 2020 at 06:26:33PM -0500, Si-Wei Liu wrote:
> Pinned pages are not properly accounted particularly when
> mapping error occurs on IOTLB update. Clean up dangling
> pinned pages for the error path.
>
> The memory usage for bookkeeping pinned pages is reverted
> to what it was
On Tue, Sep 08, 2020 at 05:33:40PM +0200, Martin Wilck wrote:
> On Tue, 2020-09-08 at 10:14 -0400, Michael S. Tsirkin wrote:
> > On Mon, Aug 31, 2020 at 02:37:26PM +0200, Laurent Vivier wrote:
> > > On 28/08/2020 23:34, Martin Wilck wrote:
> > > > On Wed, 2020-08-26 at 08:26 -0400, Michael S.
From: Mihai Donțu
This command sets the spte access bits (rwx) for an array of guest
physical addresses (through the page tracking subsystem).
These GPAs, with the requested access bits, are also kept in a radix
tree in order to filter out the #PF events which are of no interest to
the
From: Mihai Donțu
This event is sent when an extended control register XCR is going to
be changed.
Signed-off-by: Mihai Donțu
Co-developed-by: Nicușor Cîțu
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 34
From: Mihai Donțu
This command is used to enable/disable introspection for a specific
MSR. The KVMI_VCPU_EVENT_MSR event is sent when the tracked MSR is going
to be changed. The introspection tool can respond by allowing the guest
to continue with normal execution or by discarding the change.
These new error codes help the introspection tool to identify the cause
of the introspection command failure and to recover from some error
cases or to give more information to the user.
Signed-off-by: Adalbert Lazăr
---
include/uapi/linux/kvm_para.h | 4
1 file changed, 4 insertions(+)
From: Mihai Donțu
On SPT page faults caused by guest page table walks, use the existing
guest page table walk code to make the necessary adjustments to the A/D
bits and return to guest. This effectively bypasses the x86 emulator
who was making the wrong modifications leading one OS (Windows 8.1
From: Mihai Donțu
During an introspection event, the introspection tool might need to
change the vCPU state, for example, to skip the current instruction.
This command is allowed only during vCPU events and the registers will
be set when the reply has been received.
Signed-off-by: Mihai Donțu
From: Nicușor Cîțu
This function is needed in order to notify the introspection tool
through KVMI_VCPU_EVENT_BP events on guest breakpoints.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/kvm/x86.c | 18 +-
include/linux/kvm_host.h | 2 ++
2
From: Nicușor Cîțu
This commit also ensures that the introspection tool and the userspace
do not disable each other the descriptor-table access VM-exit.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvmi_host.h | 4 +++
arch/x86/kvm/kvmi.c |
From: Mihai Donțu
This is used to add page access notifications as soon as a slot appears
or when a slot is moved.
Signed-off-by: Mihai Donțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_page_track.h | 13 -
arch/x86/kvm/mmu/page_track.c | 17
From: Mihai Donțu
These commands allow the introspection tool to read/write from/to
the guest memory.
Signed-off-by: Mihai Donțu
Co-developed-by: Adalbert Lazăr
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 68 ++
include/uapi/linux/kvmi.h
From: Mihai Donțu
This is needed for kvm_page_track_emulation_failure().
When the introspection tool {read,write,exec}-protect a guest memory
page, it is notified from the read/write/fetch callbacks used by
the KVM emulator. If the emulation fails it is possible that the
read/write callbacks
Every vCPU has a lock-protected list in which the receiving thread
places the jobs that has to be done by the vCPU thread
once it is kicked out of guest (KVM_REQ_INTROSPECTION).
Co-developed-by: Nicușor Cîțu
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
This event is sent by the vCPU thread as a response to the
KVMI_VM_PAUSE_VCPU command, but it has a lower priority, being sent
after any other introspection event and when no other introspection
command is queued.
The number of KVMI_VCPU_EVENT_PAUSE will match the number of successful
From: Nicușor Cîțu
This function is needed for the KVMI_VCPU_EVENT_DESCRIPTOR event.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/kvm/svm/svm.c | 15 +++
1 file changed, 15 insertions(+)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index
From: Mihai Donțu
The KVM introspection subsystem provides a facility for applications
to control the execution of any running VMs (pause, resume, shutdown),
query the state of the vCPUs (GPRs, MSRs etc.), alter the page access bits
in the shadow page tables and receive notifications when events
From: Mihai Donțu
The access to a tracked memory page leads to two types of actions from the
introspection tool: either the access is allowed (maybe with different
data for the source operand) or the vCPU should re-enter in guest
(the page is not tracked anymore, the instruction was
From: Nicușor Cîțu
This function is needed for the KVMI_VCPU_INJECT_EXCEPTION command.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/x86.c | 52 +++--
2 files changed, 31
From: Nicușor Cîțu
This function is needed for KVMI_VCPU_CONTROL_SINGLESTEP.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/vmx/vmx.c | 11 +++
2 files changed, 12 insertions(+)
diff --git
In certain situations (when the guest has to be paused, suspended,
migrated, etc.), the device manager will use this new ioctl in order to
trigger the KVMI_VM_EVENT_UNHOOK event. If the event is sent successfully
(the VM has an active introspection channel), the device manager should
delay the
By default, all introspection VM events are disabled. The introspection
tool must explicitly enable the VM events it wants to receive. With this
command it can enable/disable any VM event (e.g. KVMI_VM_EVENT_UNHOOK)
if allowed by the device manager.
Signed-off-by: Adalbert Lazăr
---
From: Mihai Donțu
It can happened to end up emulating the VMCALL instruction as a result
of the handling of an EPT write fault. In this situation,
the emulator will try to unconditionally patch the correct hypercall
opcode bytes using emulator_write_emulated(). However, this last call
uses the
From: Mihai Donțu
By default, all introspection events are disabled. The introspection tool
must explicitly enable the events it wants to receive. With this command
(KVMI_VCPU_CONTROL_EVENTS) it can enable/disable any vCPU event allowed
by the device manager.
Some vCPU events doesn't have to be
From: Nicușor Cîțu
Both, the introspection tool and the device manager can request #BP
interception. This function will be used to check if this interception
is already enabled by either side.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 1 +
From: Mircea Cîrjaliu
Add an introspection structure to all vCPUs when the VM is hooked.
Signed-off-by: Mircea Cîrjaliu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvmi_host.h | 3 ++
include/linux/kvm_host.h | 1 +
include/linux/kvmi_host.h| 6
From: Nicușor Cîțu
This function will be used to test if the descriptor-table registers
access is already tracked by userspace.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm/svm.c | 15 +++
From: Nicușor Cîțu
This commit also ensures that the introspection tool and the userspace
do not disable each other the CR3-write VM-exit.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvmi_host.h | 4 ++
arch/x86/kvm/kvmi.c | 67
From: Nicușor Cîțu
This commit also ensures that only the userspace or the introspection
tool can control the #BP interception exclusively at one time.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvmi_host.h | 18 ++
arch/x86/kvm/kvmi.c
From: Mihai Donțu
This is needed for the KVMI_VCPU_EVENT_MSR event, which is used notify
the introspection tool about any change made to a MSR of interest.
Signed-off-by: Mihai Donțu
Co-developed-by: Nicușor Cîțu
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
From: Mihai Donțu
This vCPU command is used to get the XSAVE area.
Signed-off-by: Mihai Donțu
Co-developed-by: Adalbert Lazăr
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 29 +++
arch/x86/include/uapi/asm/kvmi.h | 4 +++
This helps the introspection tool with the GVA to GPA translations
without the need to read or monitor the guest page tables.
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 32 +++
arch/x86/kvm/kvmi_msg.c | 15 +
From: Nicușor Cîțu
This function will be used to allow the introspection tool to disable the
CR3-write interception when it is no longer interested in these events,
but only if nothing else depends on these VM-exits.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
From: Mihai Donțu
This action is used in extreme cases such as blocking the spread of
malware as fast as possible.
Signed-off-by: Mihai Donțu
Signed-off-by: Adalbert Lazăr
---
virt/kvm/introspection/kvmi.c | 4
1 file changed, 4 insertions(+)
diff --git a/virt/kvm/introspection/kvmi.c
These commands are used to check what introspection commands and events
are supported (kernel) and allowed (device manager).
These are alternative methods to KVMI_GET_VERSION in checking if the
introspection supports a specific command/event.
As with the KVMI_GET_VERSION command, these two
From: Nicușor Cîțu
This is a preparatory patch in order to use a common interface to
enable/disable the MSR interception.
Also, it will allow to independently control the read and write
interceptions.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
Based on the common header (struct kvmi_msg_hdr), the receiving thread
will read/validate all messages, execute the VM introspection commands
(eg. KVMI_VM_GET_INFO) and dispatch the vCPU introspection commands
(eg. KVMI_VCPU_GET_REGISTERS) to the vCPU threads.
The vCPU threads will reply to vCPU
From: Nicușor Cîțu
This function is needed for the KVMI_VCPU_GET_XSAVE command.
Signed-off-by: Nicușor Cîțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/kvm/x86.c | 4 ++--
include/linux/kvm_host.h | 2 ++
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/x86.c
From: Mihai Donțu
This function is needed for kvmi_update_ad_flags()
and kvm_page_track_emulation_failure().
kvmi_update_ad_flags() uses the existing guest page table walk code to
update the A/D bits and return to guest (when the introspection tool
write-protects the guest page tables).
From: Mihai Donțu
This event is sent on a specific hypercall.
It is used by the code residing inside the introspected guest to call the
introspection tool and to report certain details about its operation.
For example, a classic antimalware remediation tool can report
what it has found during a
From: Mihai Donțu
This event is sent when a breakpoint was reached.
The introspection tool can place breakpoints and use them as notification
for when the OS or an application has reached a certain state or is
trying to perform a certain operation (eg. create a process).
Signed-off-by: Mihai
From: Mihai Donțu
This is needed because the emulator calls the page tracking code
irrespective of the current VM-exit reason or available information.
Signed-off-by: Mihai Donțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 2 +-
From: Nicușor Cîțu
This is needed for the KVMI_VCPU_SET_REGISTERS command, which allows
an introspection tool to override the kvm_regs structure for a specific
vCPU without clearing the pending exception. In most cases this is used
to increment the program counter.
Signed-off-by: Nicușor Cîțu
From: Marian Rotariu
This command returns a CPUID leaf (as seen by the guest OS).
Signed-off-by: Marian Rotariu
Co-developed-by: Adalbert Lazăr
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 36 +++
arch/x86/include/uapi/asm/kvmi.h
From: Ștefan Șicleru
This function is needed for the KVMI_VM_GET_MAX_GFN command.
Signed-off-by: Ștefan Șicleru
Signed-off-by: Adalbert Lazăr
---
include/linux/kvm_host.h | 1 +
virt/kvm/kvm_main.c | 25 +
2 files changed, 26 insertions(+)
diff --git
From: Mihai Donțu
This should make the code more readable.
Signed-off-by: Mihai Donțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/kvm/vmx/vmx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index
From: Mircea Cîrjaliu
This change is needed because the introspection tool can write-protect
guest page tables or exec-protect heap/stack pages.
Signed-off-by: Mircea Cîrjaliu
Co-developed-by: Adalbert Lazăr
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 5 +
From: Nicușor Cîțu
This function will be used to check if the write access for a specific
MSR is already intercepted. The information will be used to restore the
interception status when the introspection tool is no longer interested
in that MSR.
Signed-off-by: Nicușor Cîțu
Signed-off-by:
When the introspection tool tries to enable the KVMI_VCPU_EVENT_DESCRIPTOR
event, this function is used to check if the control of VM-exits caused
by descriptor-table registers access is supported.
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm/svm.c
This function is needed for the KVMI_VM_PAUSE_VCPU command, which sets
the introspection request flag, kicks the vCPU out of guest and returns
a success error code (0). The vCPU will send the KVMI_VCPU_EVENT_PAUSE
event as soon as possible. Once the introspection tool receives the event,
it knows
The next hypercalls will be correctly numbered.
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/hypercalls.rst | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/virt/kvm/hypercalls.rst
b/Documentation/virt/kvm/hypercalls.rst
index
When handling introspection commands from tools built with older or
newer versions of the introspection API, the receiving thread silently
accepts smaller/larger messages, but it replies with messages related to
current/kernel version. Smaller introspection event replies are accepted
too. However,
This can be used by the introspection tool to emulate SSE instructions.
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 33 +++
arch/x86/include/uapi/asm/kvmi.h | 9 +
arch/x86/kvm/kvmi_msg.c | 21
This command increments a pause requests counter for a vCPU and kicks
it out of guest.
The introspection tool can pause a VM by sending this command for all
vCPUs. If it sets 'wait=1', it can consider that the VM is paused when
it receives the reply for the last KVMI_VM_PAUSE_VCPU command.
From: Mihai Donțu
This is needed for kvmi_update_ad_flags() to emulate a guest page
table walk on SPT violations due to A/D bit updates.
Signed-off-by: Mihai Donțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/kvm/x86.c | 6 +++---
2 files
From: Mihai Donțu
These are needed in order to notify the introspection tool when
read/write/execute access happens on one of the tracked memory pages.
Also, this patch adds the case when the introspection tool requests
that the vCPU re-enter in guest (and abort the emulation of the current
From: Mihai Donțu
This command returns the TSC frequency (in HZ) for the specified
vCPU if available (otherwise it returns zero).
Signed-off-by: Mihai Donțu
Co-developed-by: Adalbert Lazăr
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 29
On Wed, Nov 25, 2020 at 1:46 AM Wei Liu wrote:
>
> We are about to implement an irqchip for IO-APIC when Linux runs as root
> on Microsoft Hypervisor. At the same time we would like to reuse
> existing code as much as possible.
>
> Move mp_chip_data to io_apic.h and make a few helper functions
>
On Mon, Nov 23, 2020 at 10:39 PM James Bottomley
wrote:
> On Mon, 2020-11-23 at 19:56 +0100, Miguel Ojeda wrote:
> > On Mon, Nov 23, 2020 at 4:58 PM James Bottomley
> > wrote:
...
> > But if we do the math, for an author, at even 1 minute per line
> > change and assuming nothing can be
From: Mihai Donțu
This command returns the number of online vCPUs.
The introspection tool uses the vCPU index to specify to which vCPU
the introspection command applies to.
Signed-off-by: Mihai Donțu
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 18
This can be used by the introspection tool to emulate SSE instructions.
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst | 28 +++
arch/x86/include/uapi/asm/kvmi.h | 4 +++
arch/x86/kvm/kvmi_msg.c | 21
This function is needed to intercept descriptor-table registers access.
Signed-off-by: Adalbert Lazăr
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm/svm.c | 26 ++
arch/x86/kvm/vmx/vmx.c | 15 +--
3 files changed, 40
KVM_INTROSPECTION_COMMAND and KVM_INTROSPECTION_EVENTS ioctls are used
by the device manager to allow/disallow access to specific (or all)
introspection commands and events. The introspection tool will get the
KVM_EPERM error code on any attempt to use a disallowed command.
By default, all events
This is used by the introspection tool to check the hardware support
for the single step feature.
Signed-off-by: Adalbert Lazăr
---
Documentation/virt/kvm/kvmi.rst| 15 +--
arch/x86/include/uapi/asm/kvmi.h | 5 +
arch/x86/kvm/kvmi.c
From: Mihai Donțu
These functions are used by the VM introspection code
(for the KVMI_VCPU_GET_REGISTERS command and all events sending the vCPU
registers to the introspection tool).
Signed-off-by: Mihai Donțu
Signed-off-by: Adalbert Lazăr
---
arch/x86/kvm/x86.c | 10 ++
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