From: David Hildenbrand <david@redhat.com>
To: Janosch Frank <frankja@linux.ibm.com>, kvm@vger.kernel.org
Cc: thuth@redhat.com, borntraeger@de.ibm.com,
linux-s390@vger.kernel.org, cohuck@redhat.com
Subject: Re: [kvm-unit-tests PATCH v4 2/9] s390x: smp: Only use smp_cpu_setup once
Date: Thu, 23 Jan 2020 14:45:04 +0100 [thread overview]
Message-ID: <ef7894ff-4179-6730-ce28-c48e7730eff8@redhat.com> (raw)
In-Reply-To: <20200121134254.4570-3-frankja@linux.ibm.com>
On 21.01.20 14:42, Janosch Frank wrote:
> Let's stop and start instead of using setup to run a function on a
> cpu.
>
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> Reviewed-by: Thomas Huth <thuth@redhat.com>
> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
> Acked-by: David Hildenbrand <david@redhat.com>
> ---
> s390x/smp.c | 21 ++++++++++++++-------
> 1 file changed, 14 insertions(+), 7 deletions(-)
>
> diff --git a/s390x/smp.c b/s390x/smp.c
> index e37eb56..3e8cf3e 100644
> --- a/s390x/smp.c
> +++ b/s390x/smp.c
> @@ -53,7 +53,7 @@ static void test_start(void)
> psw.addr = (unsigned long)test_func;
>
> set_flag(0);
> - smp_cpu_setup(1, psw);
> + smp_cpu_start(1, psw);
> wait_for_flag();
> report(1, "start");
> }
> @@ -109,6 +109,7 @@ static void test_store_status(void)
> report(1, "status written");
> free_pages(status, PAGE_SIZE * 2);
> report_prefix_pop();
> + smp_cpu_stop(1);
>
> report_prefix_pop();
> }
> @@ -137,9 +138,8 @@ static void test_ecall(void)
>
> report_prefix_push("ecall");
> set_flag(0);
> - smp_cpu_destroy(1);
>
> - smp_cpu_setup(1, psw);
> + smp_cpu_start(1, psw);
> wait_for_flag();
> set_flag(0);
> sigp(1, SIGP_EXTERNAL_CALL, 0, NULL);
> @@ -172,9 +172,8 @@ static void test_emcall(void)
>
> report_prefix_push("emcall");
> set_flag(0);
> - smp_cpu_destroy(1);
>
> - smp_cpu_setup(1, psw);
> + smp_cpu_start(1, psw);
> wait_for_flag();
> set_flag(0);
> sigp(1, SIGP_EMERGENCY_SIGNAL, 0, NULL);
> @@ -192,7 +191,7 @@ static void test_reset_initial(void)
> psw.addr = (unsigned long)test_func;
>
> report_prefix_push("reset initial");
> - smp_cpu_setup(1, psw);
> + smp_cpu_start(1, psw);
>
> sigp_retry(1, SIGP_INITIAL_CPU_RESET, 0, NULL);
> sigp(1, SIGP_STORE_STATUS_AT_ADDRESS, (uintptr_t)status, NULL);
> @@ -223,7 +222,7 @@ static void test_reset(void)
> psw.addr = (unsigned long)test_func;
>
> report_prefix_push("cpu reset");
> - smp_cpu_setup(1, psw);
> + smp_cpu_start(1, psw);
>
> sigp_retry(1, SIGP_CPU_RESET, 0, NULL);
> report(smp_cpu_stopped(1), "cpu stopped");
> @@ -232,6 +231,7 @@ static void test_reset(void)
>
> int main(void)
> {
> + struct psw psw;
> report_prefix_push("smp");
>
> if (smp_query_num_cpus() == 1) {
> @@ -239,6 +239,12 @@ int main(void)
> goto done;
> }
>
> + /* Setting up the cpu to give it a stack and lowcore */
> + psw.mask = extract_psw_mask();
> + psw.addr = (unsigned long)cpu_loop;
> + smp_cpu_setup(1, psw);
> + smp_cpu_stop(1);
> +
> test_start();
> test_stop();
> test_stop_store_status();
> @@ -247,6 +253,7 @@ int main(void)
> test_emcall();
> test_reset();
> test_reset_initial();
> + smp_cpu_destroy(1);
>
> done:
> report_prefix_pop();
>
With this patch, I get timeouts under TCG. Seems to loop forever.
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2020-01-23 13:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-21 13:42 [kvm-unit-tests PATCH v4 0/9] s390x: smp: Improve smp code and reset checks Janosch Frank
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 1/9] s390x: smp: Cleanup smp.c Janosch Frank
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 2/9] s390x: smp: Only use smp_cpu_setup once Janosch Frank
2020-01-23 13:45 ` David Hildenbrand [this message]
2020-01-23 13:54 ` Janosch Frank
2020-01-23 13:56 ` David Hildenbrand
2020-01-24 8:28 ` David Hildenbrand
2020-01-24 8:38 ` David Hildenbrand
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 3/9] s390x: Add cpu id to interrupt error prints Janosch Frank
2020-01-23 10:02 ` Janosch Frank
2020-01-23 10:03 ` [kvm-unit-tests PATCH] " Janosch Frank
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 4/9] s390x: smp: Rework cpu start and active tracking Janosch Frank
2020-01-21 17:40 ` David Hildenbrand
2020-01-22 8:25 ` Janosch Frank
2020-01-23 9:14 ` [kvm-unit-tests PATCH] " Janosch Frank
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 5/9] s390x: smp: Wait for cpu setup to finish Janosch Frank
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 6/9] s390x: smp: Loop if secondary cpu returns into cpu setup again Janosch Frank
2020-01-21 14:28 ` Cornelia Huck
2020-01-21 17:36 ` David Hildenbrand
2020-01-23 13:32 ` David Hildenbrand
2020-01-23 13:47 ` Janosch Frank
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 7/9] s390x: smp: Remove unneeded cpu loops Janosch Frank
2020-01-21 14:30 ` Cornelia Huck
2020-01-21 17:36 ` David Hildenbrand
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 8/9] s390x: smp: Test all CRs on initial reset Janosch Frank
2020-01-21 13:42 ` [kvm-unit-tests PATCH v4 9/9] s390x: smp: Dirty fpc before initial reset test Janosch Frank
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