Re: [PATCH kvm-unit-tests] x86: add tests for MSR_IA32_TSX_CTRL

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On Wed, Nov 20, 2019 at 2:17 PM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
>
> On 20/11/19 23:16, Jim Mattson wrote:
> > On Wed, Nov 20, 2019 at 10:43 AM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
> >>
> >> On 20/11/19 19:13, Jim Mattson wrote:
> >>> On Mon, Nov 18, 2019 at 9:29 AM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
> >>>>
> >>>> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> >>>
> >>> I had to add tsx-ctrl to x86/unittests.cfg:
> >>>
> >>> +[tsx-ctrl]
> >>> +file = tsx-ctrl.flat
> >>> +extra_params = -cpu host
> >>> +groups = tsx-ctrl
> >>> +
> >>>
> >>> With qemu 4.1, I get:
> >>>
> >>> timeout -k 1s --foreground 90s /root/kvm-unit-tests/deps/qemu.sh
> >>> -nodefaults -device pc-testdev -device
> >>> isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none -serial stdio -device
> >>> pci-testdev -machine accel=kvm -kernel x86/tsx-ctrl.flat -smp 1 -cpu
> >>> host # -initrd /tmp/tmp.7wOLppNO4W
> >>> enabling apic
> >>> SKIP: TSX_CTRL not available
> >>>
> >>> Maybe qemu is masking off ARCH_CAP_TSX_CTRL_MSR? I haven't investigated.
> >>
> >> Yes, you need "-cpu host,migratable=off" if you don't have the
> >> corresponding QEMU patches (which I've only sent today, but just
> >> allowing unmigratable features in extra_params will be okay for you to
> >> test).
> >
> > Okay, that works!
> >
> > enabling apic
> > PASS: TSX_CTRL should be 0
> > PASS: Transactions do not abort
> > PASS: TSX_CTRL hides RTM
> > PASS: TSX_CTRL hides HLE
> > PASS: TSX_CTRL=0 unhides RTM
> > PASS: TSX_CTRL causes transactions to abort
> > PASS: TSX_CTRL=0 causes transactions to succeed
> > SUMMARY: 7 tests
>
> Great, should I merge the patches in 5.5 with your Tested-by annotation?

Please do.



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