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From: Claudio Imbrenda <imbrenda@linux.ibm.com>
To: Heiko Carstens <hca@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>,
	Sven Schnelle <svens@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@linux.ibm.com>,
	Harald Freudenberger <freude@linux.ibm.com>,
	Holger Dengler <dengler@linux.ibm.com>,
	Vineeth Vijayan <vneethv@linux.ibm.com>,
	Peter Oberparleiter <oberpar@linux.ibm.com>,
	Janosch Frank <frankja@linux.ibm.com>,
	David Hildenbrand <david@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/4] KVM: s390: Remove cond_resched() calls
Date: Wed, 29 Jul 2026 18:45:48 +0200	[thread overview]
Message-ID: <20260729184548.38b7c791@p-imbrenda> (raw)
In-Reply-To: <20260727162430.1599396-3-hca@linux.ibm.com>

On Mon, 27 Jul 2026 18:24:28 +0200
Heiko Carstens <hca@linux.ibm.com> wrote:

> Since [1] cond_resched() is a no-op on s390. Remove all calls.
> 
> [1] commit 7dadeaa6e851 ("sched: Further restrict the preemption modes")
> 
> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
> ---
>  arch/s390/include/asm/uv.h  | 1 -
>  arch/s390/kvm/gaccess.c     | 8 ++------
>  arch/s390/kvm/gmap.c        | 4 ----
>  arch/s390/kvm/kvm-s390.c    | 1 -
>  arch/s390/kvm/pv.c          | 1 -
>  arch/s390/kvm/vsie.c        | 1 -
>  arch/s390/mm/gmap_helpers.c | 1 -
>  7 files changed, 2 insertions(+), 15 deletions(-)
> 
> diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h
> index d919e69662f5..795da130342a 100644
> --- a/arch/s390/include/asm/uv.h
> +++ b/arch/s390/include/asm/uv.h
> @@ -461,7 +461,6 @@ static inline int uv_call_sched(unsigned long r1, unsigned long r2)
>  
>  	do {
>  		cc = __uv_call(r1, r2);
> -		cond_resched();
>  	} while (cc > 1);
>  	return cc;
>  }

so now uv_call_sched() is the same as uv_call()?
just drop uv_call_sched() then


[...]

  reply	other threads:[~2026-07-29 16:46 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-27 16:24 [PATCH 0/4] s390: Remove or replace " Heiko Carstens
2026-07-27 16:24 ` [PATCH 1/4] s390/crypto: Replace cond_resched() with schedule() Heiko Carstens
2026-07-28  7:05   ` Harald Freudenberger
2026-07-28  8:29     ` Heiko Carstens
2026-07-28  8:53       ` Harald Freudenberger
2026-07-28  9:51       ` Holger Dengler
2026-07-28 12:06         ` Heiko Carstens
2026-07-28 10:43       ` Peter Zijlstra
2026-07-27 16:24 ` [PATCH 2/4] KVM: s390: Remove cond_resched() calls Heiko Carstens
2026-07-29 16:45   ` Claudio Imbrenda [this message]
2026-07-30  5:25     ` Heiko Carstens
2026-07-27 16:24 ` [PATCH 3/4] " Heiko Carstens
2026-07-27 16:24 ` [PATCH 4/4] s390/cio: " Heiko Carstens
2026-07-28  9:28   ` Peter Oberparleiter

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