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From: Paolo Bonzini <pbonzini@redhat.com>
To: Jim Mattson <jmattson@google.com>
Cc: kvm list <kvm@vger.kernel.org>
Subject: Re: [PATCH kvm-unit-tests] x86: add tests for MSR_IA32_TSX_CTRL
Date: Wed, 20 Nov 2019 19:43:27 +0100	[thread overview]
Message-ID: <710cd64e-b74e-0651-2045-156ba47ce04b@redhat.com> (raw)
In-Reply-To: <CALMp9eQERkb76LvGDRQbJafK75fo=7X6xyBb+PfwfzGaY5_qeA@mail.gmail.com>

On 20/11/19 19:13, Jim Mattson wrote:
> On Mon, Nov 18, 2019 at 9:29 AM Paolo Bonzini <pbonzini@redhat.com> wrote:
>>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> 
> 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).

Paolo


  reply	other threads:[~2019-11-20 18:43 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-18 17:28 [PATCH kvm-unit-tests] x86: add tests for MSR_IA32_TSX_CTRL Paolo Bonzini
2019-11-20 18:13 ` Jim Mattson
2019-11-20 18:43   ` Paolo Bonzini [this message]
2019-11-20 22:16     ` Jim Mattson
2019-11-20 22:17       ` Paolo Bonzini
2019-11-20 22:21         ` Jim Mattson

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