From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Alexander Graf <agraf@suse.de>
Cc: kvm@vger.kernel.org, olofj@google.com, kvm-ppc@vger.kernel.org,
paulus@samba.org,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH V4] POWERPC: BOOK3S: KVM: Use the saved dar value and generic make_dsisr
Date: Tue, 06 May 2014 10:07:27 +1000 [thread overview]
Message-ID: <1399334847.20388.72.camel@pasglop> (raw)
In-Reply-To: <5367A39D.9080709@suse.de>
On Mon, 2014-05-05 at 16:43 +0200, Alexander Graf wrote:
> > Paul mentioned that BOOK3S always had DAR value set on alignment
> > interrupt. And the patch is to enable/collect correct DAR value when
> > running with Little Endian PR guest. Now to limit the impact and to
> > enable Little Endian PR guest, I ended up doing the conditional code
> > only for book3s 64 for which we know for sure that we set DAR value.
>
> Yes, and I'm asking whether we know that this statement holds true for
> PA6T and G5 chips which I wouldn't consider IBM POWER. Since the G5 is
> at least developed by IBM, I'd assume its semantics here are similar to
> POWER4, but for PA6T I wouldn't be so sure.
I am not aware of any PowerPC processor that does not set DAR on
alignment interrupts. Paul, are you ?
Cheers,
Ben.
next prev parent reply other threads:[~2014-05-06 0:07 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-04 17:21 [PATCH V4] POWERPC: BOOK3S: KVM: Use the saved dar value and generic make_dsisr Aneesh Kumar K.V
2014-05-05 11:19 ` Alexander Graf
2014-05-05 14:26 ` Aneesh Kumar K.V
2014-05-05 14:43 ` Alexander Graf
2014-05-05 14:50 ` Aneesh Kumar K.V
2014-05-05 15:10 ` Alexander Graf
2014-05-05 14:54 ` Olof Johansson
2014-05-05 15:03 ` Aneesh Kumar K.V
2014-05-05 15:06 ` Olof Johansson
2014-05-05 14:57 ` Olof Johansson
2014-05-05 15:09 ` Alexander Graf
2014-05-05 21:23 ` Christian Zigotzky
2014-05-06 0:07 ` Benjamin Herrenschmidt [this message]
2014-05-06 0:04 ` Benjamin Herrenschmidt
2014-05-06 0:41 ` Paul Mackerras
2014-05-06 6:57 ` Alexander Graf
2014-05-06 14:06 ` Aneesh Kumar K.V
2014-05-06 14:12 ` Aneesh Kumar K.V
2014-05-06 14:21 ` Alexander Graf
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1399334847.20388.72.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=agraf@suse.de \
--cc=aneesh.kumar@linux.vnet.ibm.com \
--cc=kvm-ppc@vger.kernel.org \
--cc=kvm@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=olofj@google.com \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).