From: David Gibson <david@gibson.dropbear.id.au>
To: "Cédric Le Goater" <clg@fr.ibm.com>
Cc: aik@ozlabs.ru, andmike@linux.ibm.com,
Ram Pai <linuxram@us.ibm.com>, Greg Kurz <groug@kaod.org>,
kvm-ppc@vger.kernel.org, sukadev@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org, bauerman@linux.ibm.com
Subject: Re: [RFC PATCH v1] powerpc/prom_init: disable XIVE in Secure VM.
Date: Thu, 5 Mar 2020 10:55:45 +1100 [thread overview]
Message-ID: <20200304235545.GE593957@umbus.fritz.box> (raw)
In-Reply-To: <08269906-db11-b80c-0e67-777ab0aaa9bd@fr.ibm.com>
[-- Attachment #1: Type: text/plain, Size: 1101 bytes --]
On Wed, Mar 04, 2020 at 04:56:09PM +0100, Cédric Le Goater wrote:
> [ ... ]
>
> > (1) applied the patch which shares the EQ-page with the hypervisor.
> > (2) set "kernel_irqchip=off"
> > (3) set "ic-mode=xive"
>
> you don't have to set the interrupt mode. xive should be negotiated
> by default.
>
> > (4) set "svm=on" on the kernel command line.
> > (5) no changes to the hypervisor and ultravisor.
> >
> > And Boom it works!. So you were right.
>
> Excellent.
>
> > I am sending out the patch for (1) above ASAP.
>
> Next step, could you please try to do the same with the TIMA and ESB pfn ?
> and use KVM.
I'm a bit confused by this. Aren't the TIMA and ESB pages essentially
IO pages, rather than memory pages from the guest's point of view? I
assume only memory pages are protected with PEF - I can't even really
see what protecting an IO page would even mean.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
next prev parent reply other threads:[~2020-03-05 0:31 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-29 7:54 [RFC PATCH v1] powerpc/prom_init: disable XIVE in Secure VM Ram Pai
2020-02-29 8:27 ` Cédric Le Goater
2020-02-29 22:51 ` Ram Pai
2020-03-02 7:34 ` Cédric Le Goater
2020-03-02 20:54 ` Greg Kurz
2020-03-02 23:32 ` David Gibson
2020-03-03 6:50 ` Cédric Le Goater
2020-03-03 17:02 ` Ram Pai
2020-03-03 17:45 ` Greg Kurz
2020-03-03 18:56 ` Ram Pai
2020-03-04 10:59 ` Greg Kurz
2020-03-04 15:13 ` Ram Pai
2020-03-04 15:37 ` Ram Pai
2020-03-04 15:56 ` Cédric Le Goater
2020-03-04 23:55 ` David Gibson [this message]
2020-03-05 7:15 ` Cédric Le Goater
2020-03-05 15:15 ` Ram Pai
2020-03-05 15:36 ` Cédric Le Goater
2020-03-03 19:18 ` [EXTERNAL] " Cédric Le Goater
2020-03-04 8:34 ` Greg Kurz
2020-03-03 19:08 ` Cédric Le Goater
2020-03-03 20:29 ` Ram Pai
2020-03-05 11:41 ` Cédric Le Goater
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=20200304235545.GE593957@umbus.fritz.box \
--to=david@gibson.dropbear.id.au \
--cc=aik@ozlabs.ru \
--cc=andmike@linux.ibm.com \
--cc=bauerman@linux.ibm.com \
--cc=clg@fr.ibm.com \
--cc=groug@kaod.org \
--cc=kvm-ppc@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=linuxram@us.ibm.com \
--cc=sukadev@linux.vnet.ibm.com \
/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).