For the shortlog, specify the scope/domain/namespace of the patch. For KVM selftests, that's "KVM: selftests:". And ideally, describe the impact of the change in a more conversational way, as opposed to stating the literal effect of the patch. Stating that the patch fixes a warning is obviously accurate, but it doesn't provide any insight as to the severity of the issue, i.e. what's actually broken and being fixed.

E.g.

KVM: selftests: Actually print out magic token in NX hugepages skip message

On Tue, Nov 28, 2023, angquan yu wrote:

From: angquan yu angquan21@gmail.com

This commit fixes a compiler warning in the file x86_64/nx_huge_pages_test.c, which was caused by improper macro expansion of '__TEST_REQUIRE'.

Warning addressed:

• The warning was triggered by the expansion of the '__TEST_REQUIRE'

macro, indicating a potential issue in how the macro was being used or expanded.

Changes made:

• Modified the usage of the '__TEST_REQUIRE' macro to ensure proper

expansion. This involved explicitly passing the expected magic token (MAGIC_TOKEN) and a descriptive error message to the macro.

• The fix enhances clarity in the macro usage and ensures that

the compiler correctly interprets the intended logic, thereby resolving the warning.

Fixing warnings is nice, but warnings are a means to an end, i.e. they identify things that *might* be actual problems. The real issue is that the test will spit out garbage instead of the magic number.

All that said, applied to kvm-x86 selftests, with a heavily rewritten shortlog and changelog (I had the same fix locally, so more or less just grabbed what I had already written).

Thanks!

[1/1] KVM: selftests: Actually print out magic token in NX hugepages skip message https://github.com/kvm-x86/linux/commit/3b99d46a1170

Signed-off-by: angquan yu angquan21@gmail.com

tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c b/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c index 18ac5c195..323ede6b6 100644 --- a/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c +++ b/tools/testing/selftests/kvm/x86_64/nx_huge_pages_test.c @@ -259,7 +259,8 @@ int main(int argc, char **argv) __TEST_REQUIRE(token == MAGIC_TOKEN, "This test must be run with the magic token %d.\n" "This is done by nx_huge_pages_test.sh, which\n"

•        "also handles environment setup for the test.");
  

•        "also handles environment setup for the test.",
  

• 	   MAGIC_TOKEN);
  

run_test(reclaim_period_ms, false, reboot_permissions); run_test(reclaim_period_ms, true, reboot_permissions); -- 2.39.2