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Message-ID: <CAAeHK+z2LmMYasYtRTt2U=QF8Pe_i10RA3-SkLzGXXByZqLh1w@mail.gmail.com>
Date:   Tue, 22 May 2018 19:58:31 +0200
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Marc Zyngier <marc.zyngier@....com>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        christoffer.dall@....com,
        Takahiro Akashi <takahiro.akashi@...aro.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        kvmarm@...ts.cs.columbia.edu, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm64: kvm: use -fno-jump-tables with clang

On Sat, May 19, 2018 at 12:44 PM, Marc Zyngier <marc.zyngier@....com> wrote:
> That would definitely be the right thing to do. Make sure you (or
> Andrey tests with the latest released mainline kernel (4.16 for now)
> or (even better) the tip of Linus' tree.

Hi!

I can confirm that after applying this patch onto 4.17-rc4 kernel the
Odroid C2 board that I have boots (it doesn't without the patch).

This is the result of running KVM tests that I was able to find [1]:

root@...oid64:/home/odroid/kvm-unit-tests# ./run_tests.sh
PASS selftest-setup (2 tests)
PASS selftest-vectors-kernel (2 tests)
PASS selftest-vectors-user (2 tests)
PASS selftest-smp (5 tests)
PASS pci-test (1 tests)
FAIL pmu (3 tests, 3 unexpected failures)
PASS gicv2-ipi (3 tests)
SKIP gicv3-ipi (qemu-system-aarch64: Initialization of device
kvm-arm-gicv3 failed: error creating in-kernel VGIC: No such device)
PASS gicv2-active (1 tests)
SKIP gicv3-active (qemu-system-aarch64: Initialization of device
kvm-arm-gicv3 failed: error creating in-kernel VGIC: No such device)
PASS psci (4 tests)
PASS timer (8 tests)

Here is the result of running the same tests on GCC compiled kernel
(looks the same):

root@...oid64:/home/odroid/kvm-unit-tests# ./run_tests.sh
PASS selftest-setup (2 tests)
PASS selftest-vectors-kernel (2 tests)
PASS selftest-vectors-user (2 tests)
PASS selftest-smp (5 tests)
PASS pci-test (1 tests)
FAIL pmu (3 tests, 3 unexpected failures)
PASS gicv2-ipi (3 tests)
SKIP gicv3-ipi (qemu-system-aarch64: Initialization of device
kvm-arm-gicv3 failed: error creating in-kernel VGIC: No such device)
PASS gicv2-active (1 tests)
SKIP gicv3-active (qemu-system-aarch64: Initialization of device
kvm-arm-gicv3 failed: error creating in-kernel VGIC: No such device)
PASS psci (4 tests)
PASS timer (8 tests)

Tested-by: Andrey Konovalov <andreyknvl@...gle.com>

Thanks!

[1] https://www.linux-kvm.org/page/KVM-unit-tests

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