linux-kernel - Re: [PATCH V3] rcutorture: Add CFcommon.arch for the various arch's need

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Date: Tue, 11 Jun 2024 19:57:29 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: Zhouyi Zhou <zhouzhouyi@...il.com>
Cc: linux-kernel@...r.kernel.org, rcu@...r.kernel.org,
	linux-kselftest@...r.kernel.org, lance@...osl.org,
	mark.rutland@....com
Subject: Re: [PATCH V3] rcutorture: Add CFcommon.arch for the various arch's
 need

On Wed, Jun 12, 2024 at 01:35:27AM +0000, Zhouyi Zhou wrote:
> Add CFcommon.arch for the various arch's need for rcutorture.
> 
> According to [1] and [2], this patch
> Fixes: a6fda6dab93c ("rcutorture: Tweak kvm options") by moving
> x86 specific kernel option CONFIG_HYPERVISOR_GUEST to CFcommon.arch
> 
> The patch has been revised and improved under
> Paul E. McKenney's guidance [3].
> 
> [1] https://lore.kernel.org/all/20240427005626.1365935-1-zhouzhouyi@gmail.com/
> [2] https://lore.kernel.org/all/059d36ce-6453-42be-a31e-895abd35d590@paulmck-laptop/
> [3] https://lore.kernel.org/lkml/cd3709dc-2c08-4ac2-a19b-d8edb66195e3@paulmck-laptop/T/
> 
> Tested in x86_64 and PPC VM of Open Source Lab of Oregon State University.
> 
> Signed-off-by: Zhouyi Zhou <zhouzhouyi@...il.com>

Much better, thank you!

I queued and pushed for review and testing with the usual editing,
so please let me know if I messed anything up.

I added Mark on CC in case he has thoughts from an ARM perspective.

							Thanx, Paul

------------------------------------------------------------------------

commit 29cf4c63d04b9752a32e33d46a57717121353ef7
Author: Zhouyi Zhou <zhouzhouyi@...il.com>
Date:   Wed Jun 12 01:35:27 2024 +0000

    rcutorture: Add CFcommon.arch for the various arch's need
    
    Add CFcommon.arch for the various arch's need for rcutorture.
    
    In accordance with [1] and [2], this patch moves x86 specific kernel
    option CONFIG_HYPERVISOR_GUEST to CFcommon.arch
    
    [1] https://lore.kernel.org/all/20240427005626.1365935-1-zhouzhouyi@gmail.com/
    [2] https://lore.kernel.org/all/059d36ce-6453-42be-a31e-895abd35d590@paulmck-laptop/
    
    Tested in x86_64 and PPC VM of Open Source Lab of Oregon State University.
    
    Link: https://lore.kernel.org/lkml/cd3709dc-2c08-4ac2-a19b-d8edb66195e3@paulmck-laptop/T/
    
    Fixes: a6fda6dab93c ("rcutorture: Tweak kvm options")
    Suggested-by: Paul E. McKenney <paulmck@...nel.org>
    Signed-off-by: Zhouyi Zhou <zhouzhouyi@...il.com>
    Cc: Mark Rutland <mark.rutland@....com>
    Signed-off-by: Paul E. McKenney <paulmck@...nel.org>

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..cf0387ae53584 100644
--- a/tools/testing/selftests/rcutorture/configs/rcu/CFcommon
+++ b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon
@@ -1,6 +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
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..2770560d56a0c
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.i686
@@ -0,0 +1 @@
+CONFIG_HYPERVISOR_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..2770560d56a0c
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/configs/rcu/CFcommon.x86_64
@@ -0,0 +1 @@
+CONFIG_HYPERVISOR_GUEST=y