[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Thanks Lukasz, Christian, Robie, Matthias, and the various robots and launchpad janitors: appreciate your help! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
It is a manual process which happens after 7+ days of aging in -proposed - but I have just confirmed the verification and will be proceeding to release this into -updates. Thank you for your testing! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
This bug was fixed in the package binutils - 2.30-21ubuntu1~18.04.4 --- binutils (2.30-21ubuntu1~18.04.4) bionic; urgency=medium * d/p/lp-1883880-x86-don-t-mistakenly-scale-non-8-bit-displacements.patch: avoid scaling displacements that breaks e.g. some AVX512 code (LP: #1883880) -- Christian Ehrhardt Thu, 18 Jun 2020 13:03:55 +0200 ** Changed in: binutils (Ubuntu Bionic) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Hey Folks, Does the -proposed changes get automatically integrated to -updates after a certain time has passed, or does this require somebody to take action? It would be great to have this update rolled out to 18.04 before OVS 2.14 is released in a week or two. Regards, -Harry -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Hi All, I have enabled the bionic-proposed repo as described in link. OVS-master is used for testing, containing the build-time binutils bug check as described above. 1) Can confirm that old binutils version (2.30-21ubuntu1~18.04.3) had issue, and OVS was correctly DISabling AVX512. 2) Can confirm that with -proposed binutils (2.30-21ubuntu1~18.04.4), OVS build system is correctly ENabling AVX512 support, as linker checks are passing. After the configure step, I have tested OVS, running traffic and enabling the AVX512 optimizations. It is working as expected, with AVX512 instructions running in the datapath. I believe you have already added the "verification-done" and bionic versions Christian, so I'll not change the status... please let me know if I misunderstood the process. Thanks Robie & Christian for your support on this issue! -Harry -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
** Changed in: binutils (Debian) Status: Unknown => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
** Bug watch added: Debian Bug tracker #963702 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=963702 ** Also affects: binutils (Debian) via https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=963702 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Autopkgtest issues resolved, all good now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
with: 2.30-21ubuntu1~18.04.3 root@b:~# echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps 0: 62 f1 7c 48 28 04 05vmovaps 0x1(,%rax,1),%zmm0 with: 2.30-21ubuntu1~18.04.4 root@b:~# echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps 0: 62 f1 7c 48 28 04 05vmovaps 0x40(,%rax,1),%zmm0 Setting verified, but please feel free to a) keep this in proposed a bit longer b) @Harry could you test the proposed changes to the OVS build system again? ** Tags removed: verification-needed verification-needed-bionic ** Tags added: verification-done verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Hello Christian, or anyone else affected, Accepted binutils into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/binutils/2.30-21ubuntu1~18.04.4 in a few hours, and then in the -proposed repository. Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed- bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification- failed-bionic. In either case, without details of your testing we will not be able to proceed. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping! N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days. ** Changed in: binutils (Ubuntu Bionic) Status: In Progress => Fix Committed ** Tags added: verification-needed verification-needed-bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
To have a bileto PPA with security only (thanks Sil2100 for stopping it to reconfigure itself) look at: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/4151 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
On first check by the SRU team I got: [18:34] cpaelzer: ok, looking at the binutils SRU, so you talked to do_ko about it, right? Was he +1 on the change? He was in a private IRC, I now asked him to state it here as well so that it is visible to the SRU team. And he already did so - thanks! [18:35] cpaelzer: also, since this is a toolchain package, we need to first build it in a -security only PPA, as we need it to go to both -updates and -security Hmm, I didn't know that is a common pre-check for toolchain packages - thanks for the hint. I have opened a security only all-bionic-arch enabled PPA for this and started a build at: => https://launchpad.net/~paelzer/+archive/ubuntu/lp-1883880-binutils-sec-only The first few builds are completed by now. I hope this helps to remove the remaining blockers to get this into bionic-proposed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
yes, this looks sensible as a SRU -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Hi Christian, Thanks for the additional info! Confirm that with the PPA the proposed checks now pass: $ echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps 8: 0: 62 f1 7c 48 28 04 05vmovaps 0x40(,%rax,1),%zmm0 Also the proposed OVS automake build-system changes will enable avx512 correctly: checking binutils avx512 assembler checks passing... yes I'll wait for the SRU team to accept into proposed. Regards, -Harry -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Hi Harry, the real action/verification will be needed ocne the SRU team has accepted that into proposed [1]. If you want to test the PPA the following will enable it on your system: $ sudo add-apt-repository ppa:ci-train-ppa-service/4105 The PPA tells you that on its front page [2] as well, I just happen to link the sub-page with the package details as I more often want to check build/version details. I beg your pardon that was my fault not realizing you could make better use the entry page instead. [1]: https://wiki.ubuntu.com/StableReleaseUpdates [2]: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/4105 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Hey Folks, Apologies I'm not familiar with the SRU testing process. I'd like to help - have an 18.04 setup for testing here. Is there an easy way to add the test-build PPA and just do an apt update && apt install binutils? https://launchpad.net/~ci-train-ppa- service/+archive/ubuntu/4105/+packages Regards, -Harry -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
I got doko to have a quick look (as he is unavailable atm) which seemed ok. This was mostly to hear from him if this was an overall horrendous idea (it isn't) and not to check every line, so this should be ok as-is then. Further as stated above all other pre-checks against the PPA are good as well. I uploaded to bionic-unapproved for consideration by the SRU Team. ** Changed in: binutils (Ubuntu Bionic) Status: New => In Progress ** Changed in: binutils (Ubuntu Bionic) Assignee: Matthias Klose (doko) => Christian Ehrhardt (paelzer) ** Tags added: server-next -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Tested in Bionic Container: no PPA: root@b:~# echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps 0: 62 f1 7c 48 28 04 05vmovaps 0x1(,%rax,1),%zmm0 with PPA: root@b:~# echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps 0: 62 f1 7c 48 28 04 05vmovaps 0x40(,%rax,1),%zmm0 Seems to work as intended -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
A few dep8 tests failed in the sniff, but all of them are existing known overrides in Bionic: ubuntu-release:9:force-badtest dh-ada-library/6.12 ubuntu-release:18:force-badtest lintian/2.5.81ubuntu1 pitti:2:force-badtest rpmlint/1.9-6 ubuntu-sru:17:force-badtest snapcraft/2.43.1+18.04/amd64 snapcraft/2.43.1+18.04/i386 ubuntu-sru:20:force-badtest snapcraft/2.43.1+18.04/armhf snapcraft/2.43.1+18.04/arm64 ubuntu-release:90:force-badtest linux-hwe/all ubuntu-release:91:force-badtest linux-hwe-edge/all So this should be good as-is, but needs Doko to sign-off and sponsor with the experience of potential side effects of a binutils update. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Added an SRU Teamplate entry in the description, thanks Bruce for the test. The changes build fine, all self tests on build are good [1]. The dep8 sniff tests have just started at [2] and will later be available there. The changes are rather small as seen on [3] But while all that shall help by being good preparation I have no experience on binutils. Therefore I'd now assign to doko so that he can ack or comment why this won't be able to happen. [1]: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/4105/+packages [2]: https://bileto.ubuntu.com/#/ticket/4105 [3]: https://code.launchpad.net/~paelzer/ubuntu/+source/binutils/+git/binutils/+merge/386073 ** Description changed: + [Impact] + + * the assembler scales non 8 bit cases which was identified +to break e.g. some AVX512 code. It is nasty as it isn't a compile/link/ +time error. Instead the instructions might silently be corrupted until +running. Things might even work on some but fail on other systems if +e.g. the AVX code paths only run on newer chips. + + * The fix is upstream for a while and not re-changed again. Furthermore + it is in several Ubuntu releases without bugs due to that, which should + make the backport rather safe. + + [Test Case] + + * Simple example to trigger the bug: + + echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d + avx.o | grep vmovaps + + The expected output is that the objdump output matches the vmovaps + instruction input. When using binutils with the bug, the initial 0x40 + will be incorrect. + + Working: + $ echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps +0: 62 f1 7c 48 28 04 05 vmovaps 0x40(,%rax,1),%zmm0 + Failing: + $ echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps +0: 62 f1 7c 48 28 04 05 vmovaps 0x1(,%rax,1),%zmm0 + + [Regression Potential] + + * Well, this is a double edged sword. On one hand this is fortunately a +small change and only affects something formerly clearly broken. So it +should be good and only change cases formerly being bad. +But OTOH binutils areused in so many cases that I feel unable to say +"nothing will happen". The change goes to the gnu assembler, so that is +the place to look out for regressions. + + [Other Info] + + * needs a sponsor experienced with binutils to check potential pitfalls + + + + --- + + Hi, DPDK has run into some issues in the past - https://bugs.dpdk.org/show_bug.cgi?id=97 - https://bugs.dpdk.org/show_bug.cgi?id=249 + https://bugs.dpdk.org/show_bug.cgi?id=97 + https://bugs.dpdk.org/show_bug.cgi?id=249 Eventually the issues got resolved in binutils via - https://sourceware.org/bugzilla/show_bug.cgi?id=23465 + https://sourceware.org/bugzilla/show_bug.cgi?id=23465 After binutils is fixed people rebuilding DPDK themselve can use - http://patches.dpdk.org/patch/71679/ + http://patches.dpdk.org/patch/71679/ to gain more performance while on Bionics bintuils level. Note: Bionic is on DPDK 17.11.x which will not get further stable release afaik. But quite often people build their own DPDK. In fact this came up as a request from Openvswitch upstream/Intel to allow such builds on Bionic. I'd ping those people about the bug and ask them to participate in the verification if this becomes an SRU. ** Changed in: binutils (Ubuntu Bionic) Assignee: (unassigned) => Matthias Klose (doko) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
** Merge proposal linked: https://code.launchpad.net/~paelzer/ubuntu/+source/binutils/+git/binutils/+merge/386073 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Proposed patch on OVS Mailing list to check status at configure time for OVS 2.14 using the method Bruce mentioned above: https://patchwork.ozlabs.org/project/openvswitch/patch/20200618165354.87787-7-harry.van.haa...@intel.com/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Command to reproduce the issue: echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps The expected output is that the objdump output matches the vmovaps instruction input. When using binutils with the bug, the initial 0x40 will be incorrect. >From an Ubuntu 20.04 system: $ echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps 0: 62 f1 7c 48 28 04 05vmovaps 0x40(,%rax,1),%zmm0 On an Ubuntu 18.04 system: $ echo "vmovaps 0x40(,%rax,1),%zmm0" | as --64 -o avx.o && objdump -d avx.o | grep vmovaps 0: 62 f1 7c 48 28 04 05vmovaps 0x1(,%rax,1),%zmm0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1883880] Re: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic
Hi All, I contacted Christian to mention/report, just noting that here. Happy to test if we get an SRU, I'll get email notifications once I post this :) Regards, -Harry -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1883880 Title: fix non-8-bit x86 displacements breaking AVX512 builds on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1883880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
