[Xen-devel] Fwd: [xen-unstable bisection] complete test-amd64-i386-xl-qemut-ws16-amd64

["Jan Beulich" <JBeulich@xxxxxxxx>]

Paul,

>>> On 05.05.19 at 12:54, <osstest-admin@xxxxxxxxxxxxxx> wrote:
> branch xen-unstable
> xenbranch xen-unstable
> job test-amd64-i386-xl-qemut-ws16-amd64
> testid windows-install
> 
> Tree: linux git://xenbits.xen.org/linux-pvops.git
> Tree: linuxfirmware git://xenbits.xen.org/osstest/linux-firmware.git
> Tree: qemu git://xenbits.xen.org/qemu-xen-traditional.git
> Tree: qemuu git://xenbits.xen.org/qemu-xen.git
> Tree: xen git://xenbits.xen.org/xen.git
> 
> *** Found and reproduced problem changeset ***
> 
>   Bug is in tree:  xen git://xenbits.xen.org/xen.git
>   Bug introduced:  26fba3c85571354ecb1a1a3dde77fb38633515d3
>   Bug not present: a85089d0ef57a08fe97864579ee055c12fd8a928
>   Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/135744/ 
> 
> 
>   commit 26fba3c85571354ecb1a1a3dde77fb38633515d3
>   Author: Paul Durrant <paul.durrant@xxxxxxxxxx>
>   Date:   Tue Mar 19 16:29:00 2019 +0100
>   
>       viridian: add implementation of synthetic timers
>       
>       This patch introduces an implementation of the STIMER0-15_CONFIG/COUNT 
> MSRs
>       and hence a the first SynIC message source.
>       
>       The new (and documented) 'stimer' viridian enlightenment group may be
>       specified to enable this feature.
>       
>       While in the neighbourhood, this patch adds a missing check for an
>       attempt to write the time reference count MSR, which should result in an
>       exception (but not be reported as an unimplemented MSR).
>       
>       NOTE: It is necessary for correct operation that timer expiration and
>             message delivery time-stamping use the same time source as the 
> guest.
>             The specification is ambiguous but testing with a Windows 10 1803
>             guest has shown that using the partition reference counter as a
>             source whilst the guest is using RDTSC and the reference tsc page
>             does not work correctly. Therefore the time_now() function is 
> used.
>             This implements the algorithm for acquiring partition reference 
> time
>             that is documented in the specifiction.
>       
>       Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
>       Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
>       Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

Just in case you've not noticed this.

Jan



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