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 7/9] s390x: smp: Remove unneeded cpu loops
Date: Tue, 21 Jan 2020 18:36:50 +0100 [thread overview]
Message-ID: <a6ad0ea1-f6de-208e-86e3-6818144be33f@redhat.com> (raw)
In-Reply-To: <20200121134254.4570-8-frankja@linux.ibm.com>
On 21.01.20 14:42, Janosch Frank wrote:
> Now that we have a loop which is executed after we return from the
> main function of a secondary cpu, we can remove the surplus loops.
>
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> ---
> s390x/smp.c | 8 +-------
> 1 file changed, 1 insertion(+), 7 deletions(-)
>
> diff --git a/s390x/smp.c b/s390x/smp.c
> index 3e8cf3e..45f1d80 100644
> --- a/s390x/smp.c
> +++ b/s390x/smp.c
> @@ -35,15 +35,9 @@ static void set_flag(int val)
> mb();
> }
>
> -static void cpu_loop(void)
> -{
> - for (;;) {}
> -}
> -
> static void test_func(void)
> {
> set_flag(1);
> - cpu_loop();
> }
>
> static void test_start(void)
> @@ -241,7 +235,7 @@ int main(void)
>
> /* Setting up the cpu to give it a stack and lowcore */
> psw.mask = extract_psw_mask();
> - psw.addr = (unsigned long)cpu_loop;
> + psw.addr = (unsigned long)test_func;
> smp_cpu_setup(1, psw);
> smp_cpu_stop(1);
>
>
Acked-by: David Hildenbrand <david@redhat.com>
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2020-01-21 17:37 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
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 [this message]
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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