Re: [Xen-devel] [xen-4.8-testing test] 114505: regressions - FAIL

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 15/10/17 20:45, osstest service owner wrote:
> flight 114505 xen-4.8-testing real [real]
> http://logs.test-lab.xenproject.org/osstest/logs/114505/
>
> Regressions :-(
>
> Tests which did not succeed and are blocking,
> including tests which could not be run:
>  test-xtf-amd64-amd64-2 48 xtf/test-hvm64-lbr-tsx-vmentry fail REGR. vs. 
> 114173
>
> Tests which are failing intermittently (not blocking):
>  test-xtf-amd64-amd64-5 48 xtf/test-hvm64-lbr-tsx-vmentry fail in 114454 pass 
> in 114505

Ian: These tests exercise something very machine specific, and the XTF
tests really do need tying to specific hardware when making regression
considerations.

Jan: This highlights that TSX/VMEntry failure fixes probably want
backporting to before Xen 4.9.  IIRC, the 6 patches needed are:

e3eb84e33c36 (only as a functional prerequisite)
9b93c6b3695b: x86/vmx: introduce vmx_find_msr()
7f11aa4b2b1f: x86/vmx: optimize vmx_read/write_guest_msr()
d6e9f8d4f35d: x86/vmx: fix vmentry failure with TSX bits in LBR
f97838bbd980: x86: Move microcode loading earlier
20f1976b4419: x86/vmx: Fix vmentry failure because of invalid LER on Broadwell

~Andrew

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