Re: [PATCH V4] rcutorture: Add CFcommon.arch for the various arch's need

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On Thu, Jun 20, 2024 at 10:57:27AM -0700, Paul E. McKenney wrote:
> On Wed, Jun 19, 2024 at 11:06:58PM +0000, Zhouyi Zhou wrote:
> > Add CFcommon.arch for the various arch's need for rcutorture.
> >     
> > In accordance with [1], [2] and [3], move x86 specific kernel option
> > CONFIG_HYPERVISOR_GUEST to CFcommon.arch, also move kernel option
> > CONFIG_KVM_GUEST which only exists on x86 & PowerPC to CFcommon.arch. 
> >     
> > [1] https://lore.kernel.org/all/20240427005626.1365935-1-zhouzhouyi@xxxxxxxxx/
> > [2] https://lore.kernel.org/all/059d36ce-6453-42be-a31e-895abd35d590@paulmck-laptop/
> > [3] https://lore.kernel.org/all/ZnBkHosMDhsh4H8g@J2N7QTR9R3/
> >     
> > Tested in x86_64 and PPC VM of Open Source Lab of Oregon State University.
> >    
> > Fixes: a6fda6dab93c ("rcutorture: Tweak kvm options")
> > Suggested-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
> > Suggested-by: Mark Rutland <mark.rutland@xxxxxxx>
> > Signed-off-by: Zhouyi Zhou <zhouzhouyi@xxxxxxxxx>
> 
> Thank you!  I have reverted the earlier version to queue this one.
> Please check below to make sure that my usual wordsmithing did not mess
> things up.
> 
> Mark, any suggestions for any needed ARM CFcommon.arch files?  Or does
> moving out the x86/PowerPC-specific Kconfig options take care of things
> for you guys?  (Hey, I can dream, can't I?)

I'm not aware of anything that we specifically need enabled, so pulling
out those bits should be everything -- I've given my Ack below.

> 							Thanx, Paul
> 
> ------------------------------------------------------------------------
> 
> commit 9d6767c47ce4de2ef817e47a5882748d8008ebe9
> Author: Zhouyi Zhou <zhouzhouyi@xxxxxxxxx>
> Date:   Wed Jun 19 23:06:58 2024 +0000
> 
>     rcutorture: Add CFcommon.arch for arch-specific Kconfig options
>     
>     Add CFcommon.arch for arch-specific Kconfig options.
>     
>     In accordance with [1], [2] and [3], move the x86-specific kernel option
>     CONFIG_HYPERVISOR_GUEST to CFcommon.i686 and CFcommon.x86_64, and also
>     move the x86/PowerPC CONFIG_KVM_GUEST Kconfig option to CFcommon.i686,
>     CFcommon.x86_64, and CFcommon.ppc64le.
>     
>     The "arch" in CFcommon.arch is taken from the "uname -m" command.
>     
>     [1] https://lore.kernel.org/all/20240427005626.1365935-1-zhouzhouyi@xxxxxxxxx/
>     [2] https://lore.kernel.org/all/059d36ce-6453-42be-a31e-895abd35d590@paulmck-laptop/
>     [3] https://lore.kernel.org/all/ZnBkHosMDhsh4H8g@J2N7QTR9R3/
>     
>     Tested in x86_64 and PPC VM of Open Source Lab of Oregon State University.
>     
>     Fixes: a6fda6dab93c ("rcutorture: Tweak kvm options")
>     Suggested-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
>     Suggested-by: Mark Rutland <mark.rutland@xxxxxxx>
>     Signed-off-by: Zhouyi Zhou <zhouzhouyi@xxxxxxxxx>
>     Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>

Acked-by: Mark Rutland <mark.rutland@xxxxxxx>

Mark.


> 
> diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
> index b33cd87536899..ad79784e552d2 100755
> --- a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
> +++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
> @@ -68,6 +68,8 @@ config_override_param "--gdb options" KcList "$TORTURE_KCONFIG_GDB_ARG"
>  config_override_param "--kasan options" KcList "$TORTURE_KCONFIG_KASAN_ARG"
>  config_override_param "--kcsan options" KcList "$TORTURE_KCONFIG_KCSAN_ARG"
>  config_override_param "--kconfig argument" KcList "$TORTURE_KCONFIG_ARG"
> +config_override_param "$config_dir/CFcommon.$(uname -m)" KcList \
> +		      "`cat $config_dir/CFcommon.$(uname -m) 2> /dev/null`"
>  cp $T/KcList $resdir/ConfigFragment
>  
>  base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
> diff --git a/tools/testing/selftests/rcutorture/configs/rcu/CFcommon b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon
> index 0e92d85313aa7..217597e849052 100644
> --- a/tools/testing/selftests/rcutorture/configs/rcu/CFcommon
> +++ b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon
> @@ -1,7 +1,5 @@
>  CONFIG_RCU_TORTURE_TEST=y
>  CONFIG_PRINTK_TIME=y
> -CONFIG_HYPERVISOR_GUEST=y
>  CONFIG_PARAVIRT=y
> -CONFIG_KVM_GUEST=y
>  CONFIG_KCSAN_ASSUME_PLAIN_WRITES_ATOMIC=n
>  CONFIG_KCSAN_REPORT_VALUE_CHANGE_ONLY=n
> diff --git a/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.i686 b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.i686
> new file mode 100644
> index 0000000000000..d8b2f555686fb
> --- /dev/null
> +++ b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.i686
> @@ -0,0 +1,2 @@
> +CONFIG_HYPERVISOR_GUEST=y
> +CONFIG_KVM_GUEST=y
> diff --git a/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.ppc64le b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.ppc64le
> new file mode 100644
> index 0000000000000..133da04247ee0
> --- /dev/null
> +++ b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.ppc64le
> @@ -0,0 +1 @@
> +CONFIG_KVM_GUEST=y
> diff --git a/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.x86_64 b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.x86_64
> new file mode 100644
> index 0000000000000..d8b2f555686fb
> --- /dev/null
> +++ b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.x86_64
> @@ -0,0 +1,2 @@
> +CONFIG_HYPERVISOR_GUEST=y
> +CONFIG_KVM_GUEST=y




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