From: Cornelia Huck <cohuck@redhat.com>
To: Janosch Frank <frankja@linux.ibm.com>
Cc: thuth@redhat.com, david@redhat.com, borntraeger@de.ibm.com,
imbrenda@linux.ibm.com, linux-s390@vger.kernel.org
Subject: Re: [kvm-unit-tests PATCH v2] s390x: Fix uv_call() exception behavior
Date: Tue, 19 Jan 2021 17:28:30 +0100 [thread overview]
Message-ID: <20210119172754.6eefa4da.cohuck@redhat.com> (raw)
In-Reply-To: <20210118150922.5229-1-frankja@linux.ibm.com>
On Mon, 18 Jan 2021 10:09:22 -0500
Janosch Frank <frankja@linux.ibm.com> wrote:
> On a program exception we usually skip the instruction that caused the
> exception and continue. That won't work for UV calls since a "brc
> 3,0b" will retry the instruction if the CC is > 1. Let's forgo the brc
> when checking for privilege exceptions and use a uv_call_once().
>
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> Suggested-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
>
> ---
> lib/s390x/asm/uv.h | 24 ++++++++++++++++--------
> s390x/uv-guest.c | 6 +++---
> 2 files changed, 19 insertions(+), 11 deletions(-)
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
prev parent reply other threads:[~2021-01-19 16:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 14:03 [kvm-unit-tests PATCH] s390x: Fix uv_call() exception behavior Janosch Frank
2021-01-18 14:40 ` Thomas Huth
2021-01-18 14:46 ` Janosch Frank
2021-01-18 15:09 ` [kvm-unit-tests PATCH v2] " Janosch Frank
2021-01-18 15:15 ` Thomas Huth
2021-01-19 16:28 ` Cornelia Huck [this message]
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