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    XCP-ng 8.3 public alpha 🚀

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    • C
      cocoon XCP-ng Center Team 🏚️ @stormi
      last edited by

      @stormi Works 👍

      2023-01-13_vTPM-001_fixed.png

      1 Reply Last reply Reply Quote 2
      • stormiS
        stormi Vates 🪐 XCP-ng Team 🚀
        last edited by

        Thanks @cocoon

        So, I just pushed two updates to the 8.3 repositories, that you can get with a simple yum update:

        • xcp-featured, which enables partial vTPM support
        • guest-templates-json-*, which adds VM templates for RHEL 9 and derivatives.
        C 1 Reply Last reply Reply Quote 2
        • C
          cocoon XCP-ng Center Team 🏚️ @stormi
          last edited by

          OK, TPM is visible in Windows Server 2022 but no secure boot atm.
          Bios says it is disabled. Installed it in a virtual XCP-NG VM on ESXi.

          2023-01-13_vTPM-002_fixed.png

          2023-01-13_vTPM-003_fixed.png

          2023-01-13_vTPM-004_fixed.png

          1 Reply Last reply Reply Quote 0
          • stormiS
            stormi Vates 🪐 XCP-ng Team 🚀
            last edited by stormi

            @cocoon Did you enable Secure Boot on the VM, and did you also install SecureBoot certificates on your pool? (and if you installed the certificates to the pool after you first started the VM - with or without SB, you also need to install them to the VM by putting it in user mode: varstore-sb-state user {VM-UUID} varstore-sb-state {VM-UUID} user).

            C 1 Reply Last reply Reply Quote 1
            • C
              cocoon XCP-ng Center Team 🏚️ @stormi
              last edited by

              @stormi said in XCP-ng 8.3 public alpha 🚀:

              @cocoon Did you enable Secure Boot on the VM, and did you also install SecureBoot certificates on your pool? (and if you installed the certificates to the pool after you first started the VM - with or without SB, you also need to install them to the VM by putting it in user mode: varstore-sb-state user {VM-UUID}).

              Ah yes, thanks, that works 👍
              the command is just slightly different:

              varstore-sb-state {VM-UUID} user

              2023-01-16_secureboot-001_fixed.png

              2023-01-16_secureboot-002_fixed.png

              1 Reply Last reply Reply Quote 2
              • stormiS
                stormi Vates 🪐 XCP-ng Team 🚀
                last edited by

                If you want to push the vTPM test further, you can activate bitlocker in a Windows VM and see if after a reboot the drives are decrypted without having to enter passcodes manually.

                C 1 Reply Last reply Reply Quote 0
                • C
                  cocoon XCP-ng Center Team 🏚️ @stormi
                  last edited by cocoon

                  @stormi That was my plan, Bitlocker feature is already installed, will test this yes 😉

                  2023-01-16_bitlocker-001.png

                  1 Reply Last reply Reply Quote 0
                  • stormiS
                    stormi Vates 🪐 XCP-ng Team 🚀
                    last edited by stormi

                    Small Announcement / Testing Guide

                    There is a new and easy way for you to help testing XCP-ng 8.3: a few test scripts from the Xen project which deserve to be run on a wide variety of hosts. You don't need to run them on every host if they are truly identical, but it's good to run them on a wide range of hardware.

                    The first one is XTF (stands for Xen Test Framework)

                    Be aware that some of the tests may sometimes cause the host to crash.

                    XTF

                    Enable HVM FEP on the host. This is not mandatory but if you don't, several tests that require it will be skipped:

                    /opt/xensource/libexec/xen-cmdline --set-xen hvm_fep
reboot

                    Build XTF

                    yum install gcc git -y
git clone git://xenbits.xen.org/xtf.git
cd xtf
make -j8

                    (Optional, protects your host from a crash if its hardware is vulnerable to XSA-304) Switch EPT superpages to secure mode:

                    xl set-parameters ept=no-exec-sp

                    Run the tests

                    # self test
./xtf-runner selftest -q --host
# all tests
# -q stands for quiet. Remove one or both if you want to see details.
./xtf-runner -aqq --host
# check return code. Should be "3" which means "no failures but some tests were skipped":
echo $?

                    Switch back EPT superpages to fast mode, if needed

                    xl set-parameters ept=exec-sp

                    There will be a few SKIPPED tests, but there shouldn't be many.

                    Known skipped tests:

                    • test-hvm32-umip test-hvm64-umip: skipped if the CPU is not recent enough to support UMIP.
                    • test-pv64-xsa-167: always skipped
                    • test-pv64-xsa-182: skipped in default configuration.

                    You can ignore them.

                    xen-dom0-tests

                    The testsuite is very limited in Xen 4.13, but let's still run what's available.

                    Install:

                    yum install xen-dom0-tests

                    Run

                    /usr/libexec/xen/bin/test-cpu-policy
# check return code. Must be 0, otherwise this means there was a failure.
echo $?
                    gskgerG stormiS 2 Replies Last reply Reply Quote 2
                    • gskgerG
                      gskger Top contributor 💪
                      last edited by gskger

                      @stormi I am afraid my playlab host (Dell Optiplex 9010, Intel i5-3550 CPU) is to old to contribute to the XCP-ng 8.3 alpha testing, but I run the XTF test with this results:

                      [h01]# ./xtf-runner selftest -q --host
Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

                      followed by

                      [h01]# ./xtf-runner -aqq --host
Combined test results:
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
[h01]# echo $?
3
[h01]#

                      I have some HP Elitedesk 600 G6 mini coming in to test as a small virtualization lab (i5-10500T, 6 cores, 12 threads, 2.3 GHz base clock, 64GB RAM). Not the target infrastructure but will add to the range of hardware.

                      1 Reply Last reply Reply Quote 1
                      • ForzaF
                        Forza @olivierlambert
                        last edited by

                        @olivierlambert said in XCP-ng 8.3 public alpha 🚀:

                        It's an alpha not because it's unstable 😉 Just that we can make some updates before the official release. Happy to see it works well!

                        A thought. Is there a planned list of stuff that we can vote on to have on the next release?

                        1 Reply Last reply Reply Quote 0
                        • olivierlambertO
                          olivierlambert Vates 🪐 Co-Founder🦸 CEO 🧑‍💼
                          last edited by

                          Hi,

                          No/not yet/our backlog is already too full to make many choices for something that should be out in a matter of months.

                          I mean, changing a color somewhere is OK, but anything else is not in the realm of possible for now.

                          1 Reply Last reply Reply Quote 0
                          • gskgerG
                            gskger Top contributor 💪 @stormi
                            last edited by gskger

                            @stormi My first HP Elitedesk 600 G6 Mini arrived (i5-10500T, 6 cores, 12 threads, 2.3 GHz base clock, 64GB RAM, 256GB NVME) and XCP-ng 8.3 alpha installed and updated right away (but I have the efi: EFI_MEMMAP not enabled message with a boot delay).

                            The XTF test on this non-enterprise hardware returns

                            [M01]# ./xtf-runner selftest -q --host
Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

                            and

                            [M01]# ./xtf-runner -aqq --host
Combined test results:
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
[M01]# echo $?
3
[M01]#

                            Have not done anything else with this unit yet.

                            1 Reply Last reply Reply Quote 1
                            • S
                              Strebor
                              last edited by

                              Sorry for being very late to this show, but I would like to thank everybody involved in getting XCP-ng ready for using on modern 10th and 11th gen Intel NUCs! Great job!

                              So, to replace (in the near future) the old and large power guzzling lab servers in my office, I've just ordered 2x Intel NUC 11 with i5-1135G7 CPU and the intel 2.5 gbit I225 NIC.

                              Looking forward to testing them and getting ready for XCP-ng 8.3!

                              1 Reply Last reply Reply Quote 4
                              • A
                                Andrew Top contributor 💪 @stormi
                                last edited by

                                @stormi I have 8.3 alpha+updates running on an HP DL360 G8 and it's working as expected since currently it's mostly an update to 8.2... I did an ISO install/update and it went ok. I did have to re-install some packages that were installed before on 8.2 and fix options that were removed during the 8.3 install but it keep most of XCP/Network/VM config.

                                1 Reply Last reply Reply Quote 2
                                • stormiS
                                  stormi Vates 🪐 XCP-ng Team 🚀 @stormi
                                  last edited by

                                  @stormi said in XCP-ng 8.3 public alpha 🚀:

                                  Small Announcement / Testing Guide

                                  There is a new and easy way for you to help testing XCP-ng 8.3: a few test scripts from the Xen project which deserve to be run on a wide variety of hosts. You don't need to run them on every host if they are truly identical, but it's good to run them on a wide range of hardware.

                                  The first one is XTF (stands for Xen Test Framework)

                                  XTF

                                  Enable HVM FEP on the host. This is not mandatory but if you don't, several tests that require it will be skipped:

                                  /opt/xensource/libexec/xen-cmdline --set-xen hvm_fep
reboot

                                  Build XTF

                                  yum install gcc git -y
git clone git://xenbits.xen.org/xtf.git
cd xtf
make -j8

                                  Run the tests

                                  # self test
./xtf-runner selftest -q --host
# all tests
# -q stands for quiet. Remove one or both if you want to see details.
./xtf-runner -aqq --host
# check return code. Should be "3" which means "no failures but some tests were skipped":
echo $?

                                  There will be a few SKIPPED tests, but there shouldn't be many.

                                  Known skipped tests:

                                  • test-hvm32-umip test-hvm64-umip: skipped if the CPU is not recent enough to support UMIP.
                                  • test-pv64-xsa-167: always skipped
                                  • test-pv64-xsa-182: skipped in default configuration.

                                  You can ignore them.

                                  xen-dom0-tests

                                  The testsuite is very limited in Xen 4.13, but let's still run what's available.

                                  Install:

                                  yum install xen-dom0-tests

                                  Run

                                  /usr/libexec/xen/bin/test-cpu-policy
# check return code. Must be 0, otherwise this means there was a failure.
echo $?

                                  I'm still interested in as many users as possible running this on their hardware.

                                  jhansenJ J A gskgerG 9 Replies Last reply Reply Quote 0
                                  • jhansenJ
                                    jhansen @stormi
                                    last edited by olivierlambert

                                    @stormi
                                    Hello, here the results on my server:

                                    Test server:
Dell Poweredge R730
2 x Xenon E5-2698v4
512GB RAM

./xtf-runner selftest -q --host
Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

./xtf-runner -aqq --host
Combined test results:
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
Echo Result 3

/usr/libexec/xen/bin/test-cpu-policy
CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
Echo Result 0
                                    1 Reply Last reply Reply Quote 2
                                    • J
                                      JeffBerntsen Top contributor 💪 @stormi
                                      last edited by

                                      @stormi

                                      Here's the results from one of my test lab servers:

                                      Test server: HP MicroServer
CPU: AMD Athlon(tm) II Neo N36L
RAM: 8GB

xtf-runner selftest -q --host

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

xtf-runner -aqq --host

Combined test results:
test-pv64-cpuid-faulting                 SKIP
test-pv64-pv-fsgsbase                    SKIP
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP

/usr/libexec/xen/bin/test-cpu-policy

CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok

echo $?
0
                                      1 Reply Last reply Reply Quote 2
                                      • A
                                        Andrew Top contributor 💪 @stormi
                                        last edited by

                                        @stormi

                                        Intel NUC10i5FNH
Intel i5-10210U

CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
0

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

Combined test results:
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
3

                                        Intel NUC11PAHi5
Intel i5-1135G7

CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
0

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

Combined test results:
test-hvm64-lbr-tsx-vmentry               CRASH
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
6

(XEN) [   93.051330] d13v0 Unknown Host LBR MSRs
(XEN) [   93.051334] domain_crash called from arch/x86/hvm/vmx/vmx.c#vmx_msr_write_intercept+0x4c2/0x510
(XEN) [   93.051335] Domain 13 (vcpu#0) crashed on cpu#7:
(XEN) [   93.051336] ----[ Xen-4.13.4-9.29.1  x86_64  debug=n   Tainted:    H ]----
(XEN) [   93.051337] CPU:    7
(XEN) [   93.051338] RIP:    0008:[<000000000010446e>]
(XEN) [   93.051338] RFLAGS: 0000000000000046   CONTEXT: hvm guest (d13v0)
(XEN) [   93.051340] rax: 0000000000000001   rbx: 000000000010d000   rcx: 00000000000001d9
(XEN) [   93.051340] rdx: 0000000000000000   rsi: 0000000000000000   rdi: 0000000000000000
(XEN) [   93.051341] rbp: 0000000000000000   rsp: 0000000000119fe8   r8:  000000000000000a
(XEN) [   93.051341] r9:  000000000000001e   r10: 0000000000000049   r11: 000000000000001e
(XEN) [   93.051342] r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
(XEN) [   93.051343] r15: 0000000000000000   cr0: 0000000080010011   cr4: 0000000000000020
(XEN) [   93.051343] cr3: 000000000010d000   cr2: 0000000000000000
(XEN) [   93.051344] fsb: 0000000000000000   gsb: 0000000000000000   gss: 0000000000000000
(XEN) [   93.051345] ds: 0033   es: 0033   fs: 0033   gs: 0033   ss: 0000   cs: 0008
(XEN) [   95.347733] d38v0 Bad rIP 800000000000 for mode 8
(XEN) [   97.443996] d70v0 Hit #DB in Xen context: e008:ffff82d0bfffb200 [ffff82d0bfffb200], stk e010:8000000000112ff0, dr6 ffff0ff0
(XEN) [   97.568064] d72v0 Hit #DB in Xen context: e008:ffff82d080371ba0 [int3], stk 0000:ffff83003368ff78, dr6 ffff2ff0

                                        ASUS MINIPC PN63-S1
Intel i7-11370H

CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
0

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

Combined test results:
test-hvm64-lbr-tsx-vmentry               CRASH
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
6

(XEN) [  356.488438] d27v0 Unknown Host LBR MSRs
(XEN) [  356.488442] domain_crash called from arch/x86/hvm/vmx/vmx.c#vmx_msr_write_intercept+0x4c2/0x510
(XEN) [  356.488443] Domain 27 (vcpu#0) crashed on cpu#7:
(XEN) [  356.488444] ----[ Xen-4.13.4-9.29.1  x86_64  debug=n   Tainted:    H ]----
(XEN) [  356.488445] CPU:    7
(XEN) [  356.488446] RIP:    0008:[<000000000010446e>]
(XEN) [  356.488447] RFLAGS: 0000000000000046   CONTEXT: hvm guest (d27v0)
(XEN) [  356.488448] rax: 0000000000000001   rbx: 000000000010d000   rcx: 00000000000001d9
(XEN) [  356.488449] rdx: 0000000000000000   rsi: 0000000000000000   rdi: 0000000000000000
(XEN) [  356.488449] rbp: 0000000000000000   rsp: 0000000000119fe8   r8:  000000000000000a
(XEN) [  356.488450] r9:  000000000000001e   r10: 0000000000000049   r11: 000000000000001e
(XEN) [  356.488451] r12: 0000000000000000   r13: 0000000000000000   r14: 0000000000000000
(XEN) [  356.488451] r15: 0000000000000000   cr0: 0000000080010011   cr4: 0000000000000020
(XEN) [  356.488452] cr3: 000000000010d000   cr2: 0000000000000000
(XEN) [  356.488453] fsb: 0000000000000000   gsb: 0000000000000000   gss: 0000000000000000
(XEN) [  356.488454] ds: 0033   es: 0033   fs: 0033   gs: 0033   ss: 0000   cs: 0008
(XEN) [  358.951619] d52v0 Bad rIP 800000000000 for mode 8
(XEN) [  361.254829] d84v0 Hit #DB in Xen context: e008:ffff82d0bfffb200 [ffff82d0bfffb200], stk e010:8000000000112ff0, dr6 ffff0ff0
(XEN) [  361.397060] d86v0 Hit #DB in Xen context: e008:ffff82d080371ba0 [int3], stk 0000:ffff831080c27f78, dr6 ffff2ff0

                                        HP ML310e G8
Intel E3-1240 V2

CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
0

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

Combined test results:
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
3

                                        Supermicro X9DRL-7F
Intel E5-2643

CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
0

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

Combined test results:
test-pv64-cpuid-faulting                 SKIP
test-pv64-pv-fsgsbase                    SKIP
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
3

                                        HP EliteDesk 800 G3
Intel i7-7700 CPU

CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
0

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

Combined test results:
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
3

                                        ASRock 4x4 BOX-5000
AMD Ryzen 5 5600U

Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
0

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

Combined test results:
test-pv64-cpuid-faulting                 SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
3

                                        HP DL360p Gen8
Intel E5-2680

CPU Policy unit tests
Testing CPU vendor identification:
Testing CPUID serialise success:
Testing CPUID deserialise failure:
Testing CPUID out-of-range clearing:
Testing MSR serialise success:
Testing MSR deserialise failure:
Testing policy compatibility success:
Testing policy compatibility failure:
Done: all ok
0

Combined test results:
test-hvm32-selftest                      SUCCESS
test-hvm32pae-selftest                   SUCCESS
test-hvm32pse-selftest                   SUCCESS
test-hvm64-selftest                      SUCCESS
test-pv64-selftest                       SUCCESS

Combined test results:
test-pv64-cpuid-faulting                 SKIP
test-pv64-pv-fsgsbase                    SKIP
test-hvm32-umip                          SKIP
test-hvm64-umip                          SKIP
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
3
                                        stormiS 1 Reply Last reply Reply Quote 1
                                        • stormiS
                                          stormi Vates 🪐 XCP-ng Team 🚀 @Andrew
                                          last edited by

                                          @Andrew I pushed a test build of Xen in the testing repository for XCP-ng 8.3, which will hopefully solve the crash situations the tests found on your two servers.

                                          Quoting @andyhhp about what the crash message means: "The guest has tried to turn on LBR, but I don't know what that means on this CPU" where LBR stands for Last Branch Record and is used for debugging and in anti-cheat software in video games.

                                          yum clean metadata --enablerepo=xcp-ng-testing
yum update xen-dom0-libs xen-dom0-tools xen-hypervisor xen-libs xen-tools --enablerepo=xcp-ng-testing
reboot

                                          If I understood correctly, the patches add support for more recent CPUs (Sapphire Rapids) and at the same time make it so that now when guests attempt to turn LBR on, this does nothing (but at least doesn't crash).

                                          A 2 Replies Last reply Reply Quote 0
                                          • A
                                            Andrew Top contributor 💪 @stormi
                                            last edited by

                                            @stormi

                                            NUC 11 (i5-1135G7) running xen-hypervisor.x86_64 0:4.13.4-10.36.0.sapphirerapids.1.xcpng8.3 no longer gives the crash error. The test runs but it still generates a Xen message:

                                            # ./xtf-runner -aqq --host ; echo Result: $?
Combined test results:
test-pv64-xsa-167                        SKIP
test-pv64-xsa-182                        SKIP
Result: 3

(XEN) [  119.229055] d127v0 Bad rIP 800000000000 for mode 8
(XEN) [  121.294326] d159v0 Hit #DB in Xen context: e008:ffff82d0bfffe080 [ffff82d0bfffe080], stk e010:8000000000112ff0, dr6 ffff0ff0
(XEN) [  121.418332] d161v0 Hit #DB in Xen context: e008:ffff82d080369ba0 [int3], stk 0000:ffff830896a5ff78, dr6 ffff2ff0
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