From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Janosch Frank <frankja@linux.ibm.com>, qemu-devel@nongnu.org
Cc: thuth@redhat.com, cohuck@redhat.com, david@redhat.com
Subject: Re: [PATCH v2 4/4] pc-bios: s390x: Go into disabled wait when encountering a PGM exception
Date: Mon, 31 Aug 2020 10:23:41 +0200 [thread overview]
Message-ID: <25f47a0e-4aa6-cd74-dad6-24a0d803775f@de.ibm.com> (raw)
In-Reply-To: <20200827093152.3026-5-frankja@linux.ibm.com>
On 27.08.20 11:31, Janosch Frank wrote:
> Let's setup a PGM PSW, so we won't load 0s when a program exception
> happens. Instead we'll load a disabled wait PSW.
Makes sense
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
>
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> ---
> pc-bios/s390-ccw/start.S | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S
> index 939aac3a7c..775b45baeb 100644
> --- a/pc-bios/s390-ccw/start.S
> +++ b/pc-bios/s390-ccw/start.S
> @@ -44,6 +44,9 @@ done:
> larl %r2, external_new_psw
> stg %r1, 8(%r2)
> mvc 0x1b0(16),0(%r2)
> + /* set up a pgm exception disabled wait psw */
> + larl %r2, disabled_wait_psw
> + mvc 0x01d0(16), 0(%r2)
> j main /* And call C */
>
> memsetxc:
>
prev parent reply other threads:[~2020-08-31 8:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-27 9:31 [PATCH v2 0/4] pc-bios: s390x: Cleanup part 2 Janosch Frank
2020-08-27 9:31 ` [PATCH v2 1/4] pc-bios: s390x: Fix bootmap.c zipl component entry data handling Janosch Frank
2020-08-27 9:31 ` [PATCH v2 2/4] pc-bios: s390x: Use reset PSW if avaliable Janosch Frank
2020-08-27 12:43 ` Thomas Huth
2020-08-27 9:31 ` [PATCH RFC v2 3/4] pc-bios: s390x: Save io and external new PSWs before overwriting them Janosch Frank
2020-08-27 12:52 ` Thomas Huth
2020-08-27 14:30 ` Janosch Frank
2020-08-27 16:16 ` Thomas Huth
2020-08-27 9:31 ` [PATCH v2 4/4] pc-bios: s390x: Go into disabled wait when encountering a PGM exception Janosch Frank
2020-08-31 8:23 ` Christian Borntraeger [this message]
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