Public bug reported:
IPI virtualization targets to make the processor emulate the write to APIC
registers that would send IPIs in virtualized system.
VMX provide new VM-execution control and VMCS field to support IPI
virtualization which can eliminate APIC-Write VM-exit.
The processor sets the
Public bug reported:
The basic SGX patches were merged into Qemu release, the left NUMA
function for SGX should be enabled. The patch1 implemented the SGX NUMA
ACPI to enable NUMA in the SGX guest. Since Libvirt need detailed host
SGX EPC sections info to decide how to allocate EPC sections for SG
in linux 5.13
e8ea85fb2 KVM: X86: Add support for the emulation of DR6_BUS_LOCK bit
76ea438b4 KVM: X86: Expose bus lock debug exception to guest
qemu 6.1
06e878b41 target/i386: Add bus lock debug exception support
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Bugs, whi
Thanks for correcting pkg names.
No upstream commits yet. Target Linux TBD.
Platform is Sapphire Rapids
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Title:
KVM AIA Work Dispatch Instructi
Thanks for correcting pkg names.
No upstream commits yet. Target Linux 5.18 timeframe. Target Ubuntu
22.10.
Platform is Sapphire Rapids
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Title:
Thanks for correcting pkg names.
No upstream commits yet. Target Linux 5.17 timeframe. Target Ubuntu
22.04.
Platform is Sapphire Rapids
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Title:
Thanks for correcting pkg names.
No upstream commits yet. Target Linux 5.19 timeframe. Target Ubuntu
23.04.
Platform is Sapphire Rapids
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Title:
Thanks for correcting pkg names.
No upstream commits yet. Target Linux 5.18 timeframe. Target Ubuntu 22.04.
Platform is Sapphire Rapids.
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Title:
Thanks for correcting pkg names.
No upstream commits yet. Target Linux 5.18 timeframe. Target Ubuntu
22.10.
Platform is Sapphire Rapids.
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Title:
Thanks for correcting pkg names.
No upstream commits yet. Target Linux 5.18 timeframe. Target Ubuntu
22.10.
Platform is Sapphire Rapids.
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Title
Thanks for correcting pkg names.
No upstream commits yet. Target Linux 5.19 timeframe. Target Ubuntu
23.04.
Platform is Sapphire Rapids
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Title:
Public bug reported:
A VMM can enable notification VM exits to occur if no interrupt windows
occur in VMX non-root operation for a specified amount of time (notify
window).
KVM Enabling:
enable bit 31 of secondary processor-based excution control.
enable notification VM exit (exit reason 75) ha
Public bug reported:
SVM is short for shared virtual memory. This task is aiming at enabling
SVM support for assigned devices on KVM. Example: assign a GPU from host
to guest, the application program running in guest could share its
virtual memory address to the assigned device.
Latest update: ex
Public bug reported:
AIA has 3 sub features:
AIA User Interrupts
AIA User Wait Instructions
AIA Work Dispatch Instructions
AIA User Wait Instructions was merged for SNR in Kernel 5.4/Qemu4.2.
** Affects: kvm (Ubuntu)
Importance: Undecided
Status: New
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Public bug reported:
Core OS/ VMM device virtualization framework extended to support
Scalable IOV; OS/ VMM support for Scalable IOV IOMMU extensions; PASID
translation support; existing device frameworks extended to support
Scalable IOV; converged SW arch as prescribed by spec
Improved performan
Public bug reported:
A bus lock is acquired either through split locked access to writeback (WB)
memory or by using locks to uncacheable (UC) memory. This is typically > 1000
cycles slower than atomic operation within a cache
line. It also disrupts performance on other cores (which must wait for
Public bug reported:
SKX introduced the Protection Key for User Pages (PKU) feature enabling
fast, thread-specific manipulation of permission restrictions on user
pages. SPR introduced Protection Key for Supervisor Pages(PKS), a new
feature that extends the Protection Key architecture to support t
Public bug reported:
Architectural LBRs (Last Branch Records)
Architectural LBRs (Last Branch Records) enable recording of software
path history by logging taken branches and other control flow transfers
within model-specific registers, and is inherited from legacy LBR. If
CPUID.(EAX=07H, ECX=0):
Public bug reported:
Control-Flow Enforcement Tech (CET)
What is Intel CET:
Control-flow Enforcement Technology (CET) provides protection against
return/jump-oriented programming (ROP) attacks. It can be implemented
to protect both the kernel and applications. In the first phase,
only the user-mo
Public bug reported:
AMX (including XFD): AMX (Advance Matrix eXtensions) is a new programming
paradigm for direct matrix operations. TMUL (TILE Matrix mULtiply unit) is the
multiply accelerator. XFD (Extended Feature Disable) is an XSAVE extension
mechanism for those features with large XSAVE
Public bug reported:
SENDUIPI is a new ring-3 instruction that sending IPI notification
between ring 3 software. It uses a data structure (table) owned and
managed by ring 0 OS. Ring 3 software can choose which table entry to
invoke.
Target Linux 5.18
** Affects: kvm (Ubuntu)
Importance: Un
Public bug reported:
This patchset is to add CPU model for intel processor Cooper Lake. It
will inherit features from the existing CPU model Cascadelake-Server,
meanwhile, add the platform associated new instruction and feature
for speculative execution which the host supports. There are associa
qemu post 4.1.0 (yet untagged)
67192a298f5 x86/cpu: Add support for UMONITOR/UMWAIT/TPAUSE
6508799707b target/i386: Add support for save/load IA32_UMWAIT_CONTROL MSR
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Additional KVM patches has been merged (post 5.3-rc8):
e69e72faa3a KVM: x86: Add support for user wait instructions
6e3ba4abcea KVM: vmx: Emulate MSR IA32_UMWAIT_CONTROL
bf653b78f96 KVM: vmx: Introduce handle_unexpected_vmexit and handle WAITPKG
vmexit
[There's no Xen AIA work (yet)]
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This patch is also needed for kernels before 4.18
cd28325249 KVM: VMX: support MSR_IA32_ARCH_CAPABILITIES as a feature
MSR ( 25-6-18)
This patchset populates the structure in arch/x86/kvm/x86.c:
msr_based_features{}
With out this patch, qemu asserts at
kvm_get_supported_feature_msrs(KVMS
*** This bug is a duplicate of bug 1828495 ***
https://bugs.launchpad.net/bugs/1828495
No reason not to dup. Did not find 1828495 before writing 1829760
-Original Message-
From: boun...@canonical.com [mailto:boun...@canonical.com] On Behalf Of Dan
Streetman
Sent: Tuesday, May 21, 20
Yes, this is qemu/kvm, not xen. Strange, I thought I filed it against
kvm.
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Title:
[KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled in
Public bug reported:
Description of problem:
[KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled in VM.
How reproducible:
Upstream always, Ubuntu unknown.
Steps to Reproduce:
1. Boot up guest using: -cpu Cascadelake-Server
[root@clx-2s2 yexin]# qemu-system-x86_64 -accel kvm -driv
No updates/upstream at this time.
-Original Message-
From: boun...@canonical.com [mailto:boun...@canonical.com] On Behalf Of
Christian Ehrhardt ?
Sent: Monday, May 6, 2019 10:29 PM
To: Lai, Paul C
Subject: [Bug 1782208] Re: KVM SnowRidge Adaptive PEBS
Are there updates and/or references
Chris: a little of both. The UMONITOR/UMWAIT/TPAUSE is delay, but the
rest has been upstreamed (as you already noted.)
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Title:
KVM enable SnowRi
Related QEMU patch can be found at:
https://lists.gnu.org/archive/html/qemu-devel/2019-03/msg00507.html
and related kvm-unit-test can be found at:
https://patchwork.kernel.org/patch/10837677/
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33823f4d6 x86/cpufeatures: Enumerate MOVDIRI instruction
ace6485a0 x86/cpufeatures: Enumerate MOVDIR64B instruction
65e259d5c tools arch x86: Update tools's copy of cpufeatures.h
(linux 5.1-rc1)
74f2370bb KVM: x86: expose MOVDIRI CPU feature into VM.
c029b5deb KVM: x86: expose MOVDIR64B CPU featur
Public bug reported:
When the host persistent memory is used as the backend of vNVDIMM, QEMU
itself may write to the host pmem, e.g., in vNVDIMM label emulation and
live migration. In those cases, QEMU needs to take necessary operations
(e.g., flush&fence after writes, or store with non-temporal h
This is actually a KVM/qemu feature. "Xen" part was autofilled.
qemu 3.0 commit 0da0fb062 x86/cpu: Enable CLDEMOTE(Demote Cache Line)
cpu feature
linux/kvm commit: 0ea3286e2d KVM: x86: Expose CLDEMOTE CPU feature to
guest VM
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Upstream target Linux 4.20
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Title:
KVM CLX ACPI HMAT table support
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Public bug reported:
ACPI HMAT table support : HMAT is a new ACPI table that records the
performance parameter of memory, so MCDRAM (or next gen HBM2) can be
described well by this table. We need to support this table in kernel
and qemu so that guest can get and parse this table then to find where
Public bug reported:
When bit 29 is set in Test Control MSR register 0x33, a #AC execption
is generated for split locked accesses at all CPL irrespective of
CR0.AM or EFLAGS.AC.
This feature can help developers to capture memory accesses that across
cachelines with #LOCK assertion. Then develop
Public bug reported:
With the addition of more CPU state information of data, the PEBS(Processor
Event Based Sampling) record size is greatly increased. However, most general
users of PEBS require just the eventingIP and do not require such a large PEBS
record.
Adaptive PEBS provides Software
Public bug reported:
CPU core (Tremont) includes Accelerator Interfacing Architecture (AIA) features
including:
- UMONITOR/UMWAIT: Ring-3 MONITOR/MWAIT with timeout. For memory-based synch
with accelerators
- TPAUSE: Monitor-less wait (with timeout). For wait-on-multiple or
wait-for-interrupt u
Public bug reported:
The PEBS(Processor Event Based Sampling) facility allows software to profile
workload behavior by periodically capturing machine state, memory access
information and other groups of architectural information. In native systems,
PEBS uses a debug store mechanism to store a s
Public bug reported:
Add KVM support for SnowRidge New Instructions: GFNI and CLDEMOT
GFNI: New instruction to compute an affine transformation in the Galois Field.
The instruction is described here:
https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-exten
Public bug reported:
Feature description: dma-buf is an uniform mechanism to share DMA buffers
across different devices and subsystems. dma-buf for intel GVT-g is mainly used
to share the vgpu's framebuffer to userspace to leverage userspace graphics
stacks to render the framebuffer to the disp
Public bug reported:
Description of problem:
Starting qemu-kvm with '-no-acpi' should fail on systems with nvdimm
Environment:
KVM:kvm-next-4.14.0_rc4-61d75077_4ffa88c9_20171113092427
Base OS: Fedora release 25
Guest OS: Fedora release 25
Platform: SKL-2S
Reproduce steps:
1.Setup the AEP with
Public bug reported:
KVMGT gvt-g Live Migration is a valuable feature for a variety of use
cases like load balancing, hardware failover, energy saving and
geographic migration. To enable VGPU live migration, one new region is
designed for vfio_mdev device status save and restore during the
migrati
I re-installed 17.10 and cannot reproduce the issue.
Thanks for the words. Marked bug "Invalid"
** Changed in: xen (Ubuntu)
Status: Incomplete => Invalid
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Public bug reported:
This feature has been released in ICX platform and the definition of
AVX512_VNNI as below
AVX512_VNNI Vector Nerual Network Instructions, an addition to AVX512.
cpuid.(7,0). ECX[11]
This is a new instruction to support machine learning. This instructions
is pure HW feature
Private bug reported:
UMIP: User Mode Instruction Prevention, part of NIs
User-Mode Instruction Prevetion feature could prevents a group of
intructions(sgdt, sidt, sldt, smsw, and str) from being executed when
CPL > 0(i.e. in user mode), if those instructions were executed when
CPL, a general pro
Private bug reported:
UMIP: User Mode Instruction Prevention, part of NIs
User-Mode Instruction Prevetion feature could prevents a group of
intructions(sgdt, sidt, sldt, smsw, and str) from being executed when
CPL > 0(i.e. in user mode), if those instructions were executed when
CPL, a general pro
Private bug reported:
The virtualization hardware is also changing with 5-level paging. This
item is to track the work that needs to be done to update the EPT code,
and also anything that has to be done for running mixed modes, like
5-level guests on 4-level kernels.
Target Linux 4.14 (merged)
Private bug reported:
SGX 1.5 (SGX1 + Flexible Launch Control) support
Secure Guard Extensions (SGX) and Launch Control support for KVM.
Launch Control allows support of external key management for SGX.
Target Xen 4.10
** Affects: xen (Ubuntu)
Importance: Undecided
Status: New
*
Private bug reported:
Intel is introducing Field Programmable Array (FPGA) capabilities. The
FPGA can be integrated into the Xeon package (MCP) or a discrete PCI bus
device (DCP). The integrated on the CPU package (MCP) will be smaller
capacity but faster. The PCI device (DCP) will be larger cap
Private bug reported:
SGX 1.5 (SGX1 + Flexible Launch Control) support
Secure Guard Extensions (SGX) and Launch Control support for KVM.
Launch Control allows support of external key management for SGX.
Target Linux 4.14
** Affects: xen (Ubuntu)
Importance: Undecided
Status: New
Hi @Joshua:
Thanks for the reply. The 'make build' only build the xen binary. This
also builds in my environment. This doesn't build the 'xen tools' (aka
xl), which is necessary with every large step of Xen. The build
breakage is in this tools area.
The command:
make build-tools
will reprod
Public bug reported:
OS: Ubuntu 17.10
gcc: gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)
Trying to compile Xen 4.10-rc
Steps to reproduce w/ Xen 4.10:
configure
make world
Steps to reproduce quick test:
root@pclaidev:/rhel-home/pclai/test/ubuntu17.10/stdint# make t.o
cc -m32 -c -o
If memory serves, Xen 4.9 is in Artful.
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Title:
[HPC, KNM][Xen] avx512_4vnniw, avx512_4fmaps enabling
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