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| author | Richard Henderson | 2021-01-12 00:57:39 +0100 |
|---|---|---|
| committer | Peter Maydell | 2021-01-19 15:38:51 +0100 |
| commit | eb94284d0812b4e7c11c5d075b584100ac1c1b9a (patch) | |
| tree | ad205638a5b69b2bfce54899472934b4179db904 /tests | |
| parent | target/arm: Implement an IMPDEF pauth algorithm (diff) | |
| download | qemu-eb94284d0812b4e7c11c5d075b584100ac1c1b9a.tar.gz qemu-eb94284d0812b4e7c11c5d075b584100ac1c1b9a.tar.xz qemu-eb94284d0812b4e7c11c5d075b584100ac1c1b9a.zip | |
target/arm: Add cpu properties to control pauth
The crypto overhead of emulating pauth can be significant for
some workloads. Add two boolean properties that allows the
feature to be turned off, on with the architected algorithm,
or on with an implementation defined algorithm.
We need two intermediate booleans to control the state while
parsing properties lest we clobber ID_AA64ISAR1 into an invalid
intermediate state.
Tested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210111235740.462469-3-richard.henderson@linaro.org
[PMM: fixed docs typo, tweaked text to clarify that the impdef
algorithm is specific to QEMU]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/qtest/arm-cpu-features.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/qtest/arm-cpu-features.c b/tests/qtest/arm-cpu-features.c index bc681a95d5..8252b85bb8 100644 --- a/tests/qtest/arm-cpu-features.c +++ b/tests/qtest/arm-cpu-features.c @@ -427,6 +427,18 @@ static void sve_tests_sve_off_kvm(const void *data) qtest_quit(qts); } +static void pauth_tests_default(QTestState *qts, const char *cpu_type) +{ + assert_has_feature_enabled(qts, cpu_type, "pauth"); + assert_has_feature_disabled(qts, cpu_type, "pauth-impdef"); + assert_set_feature(qts, cpu_type, "pauth", false); + assert_set_feature(qts, cpu_type, "pauth", true); + assert_set_feature(qts, cpu_type, "pauth-impdef", true); + assert_set_feature(qts, cpu_type, "pauth-impdef", false); + assert_error(qts, cpu_type, "cannot enable pauth-impdef without pauth", + "{ 'pauth': false, 'pauth-impdef': true }"); +} + static void test_query_cpu_model_expansion(const void *data) { QTestState *qts; @@ -462,6 +474,7 @@ static void test_query_cpu_model_expansion(const void *data) assert_has_feature_enabled(qts, "cortex-a57", "aarch64"); sve_tests_default(qts, "max"); + pauth_tests_default(qts, "max"); /* Test that features that depend on KVM generate errors without. */ assert_error(qts, "max", |