From: "Cédric Le Goater" <clg@kaod.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@ozlabs.org>
Cc: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
kvm-ppc@vger.kernel.org,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [PATCH 00/19] KVM: PPC: Book3S HV: add XIVE native exploitation mode
Date: Sat, 26 Jan 2019 09:25:04 +0100 [thread overview]
Message-ID: <06b7c4d2-72ba-ca4f-aded-789280798136@kaod.org> (raw)
In-Reply-To: <a420acfb9f375b27bc1203fbb15312a61eb0c34d.camel@kernel.crashing.org>
Was there a crashing.org shutdown ?
Received: from gate.crashing.org (gate.crashing.org [63.228.1.57])
by in5.mail.ovh.net (Postfix) with ESMTPS id 43mYnj0nrlz1N7KC
for <clg@kaod.org>; Fri, 25 Jan 2019 22:38:00 +0000 (UTC)
Received: from localhost (localhost.localdomain [127.0.0.1])
by gate.crashing.org (8.14.1/8.14.1) with ESMTP id x0NLZf4K021092;
Wed, 23 Jan 2019 15:35:43 -0600
On 1/23/19 10:35 PM, Benjamin Herrenschmidt wrote:
> On Wed, 2019-01-23 at 20:07 +0100, Cédric Le Goater wrote:
>> Event Assignment Structure, a.k.a IVE (Interrupt Virtualization Entry)
>>
>> All the names changed somewhere between XIVE v1 and XIVE v2. OPAL and
>> Linux should be adjusted ...
>
> All the names changed between the HW design and the "architecture"
> document. The HW guys use the old names, the architecture the new
> names, and Linux & OPAL mostly use the old ones because frankly the new
> names suck big time.
Well, It does not make XIVE any clearer ... I did prefer the v1 names
but there was some naming overlap in the concepts.
>> It would be good to talk a little about the nested support (offline
>> may be) to make sure that we are not missing some major interface that
>> would require a lot of change. If we need to prepare ground, I think
>> the timing is good.
>>
>> The size of the IRQ number space might be a problem. It seems we
>> would need to increase it considerably to support multiple nested
>> guests. That said I haven't look much how nested is designed.
>
> The size of the VP space is a bigger concern. Even today. We really
> need qemu to tell the max #cpu to KVM so we can allocate less of them.
ah yes. we would also need to reduce the number of available priorities
per CPU to have more EQ descriptors available if I recall well.
> As for nesting, I suggest for the foreseeable future we stick to XICS
> emulation in nested guests.
ok. so no kernel_irqchip at all. hmm.
I was wondering how possible it was to have L2 initialize the underlying
OPAL structures in the L0 hypervisor. May be with a sort of proxy hcall
which would perform the initialization in QEMU L1 on behalf of L2.
Cheers,
C.
WARNING: multiple messages have this Message-ID (diff)
From: "Cédric Le Goater" <clg@kaod.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@ozlabs.org>
Cc: linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,
kvm-ppc@vger.kernel.org,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [PATCH 00/19] KVM: PPC: Book3S HV: add XIVE native exploitation mode
Date: Sat, 26 Jan 2019 08:25:04 +0000 [thread overview]
Message-ID: <06b7c4d2-72ba-ca4f-aded-789280798136@kaod.org> (raw)
In-Reply-To: <a420acfb9f375b27bc1203fbb15312a61eb0c34d.camel@kernel.crashing.org>
Was there a crashing.org shutdown ?
Received: from gate.crashing.org (gate.crashing.org [63.228.1.57])
by in5.mail.ovh.net (Postfix) with ESMTPS id 43mYnj0nrlz1N7KC
for <clg@kaod.org>; Fri, 25 Jan 2019 22:38:00 +0000 (UTC)
Received: from localhost (localhost.localdomain [127.0.0.1])
by gate.crashing.org (8.14.1/8.14.1) with ESMTP id x0NLZf4K021092;
Wed, 23 Jan 2019 15:35:43 -0600
On 1/23/19 10:35 PM, Benjamin Herrenschmidt wrote:
> On Wed, 2019-01-23 at 20:07 +0100, Cédric Le Goater wrote:
>> Event Assignment Structure, a.k.a IVE (Interrupt Virtualization Entry)
>>
>> All the names changed somewhere between XIVE v1 and XIVE v2. OPAL and
>> Linux should be adjusted ...
>
> All the names changed between the HW design and the "architecture"
> document. The HW guys use the old names, the architecture the new
> names, and Linux & OPAL mostly use the old ones because frankly the new
> names suck big time.
Well, It does not make XIVE any clearer ... I did prefer the v1 names
but there was some naming overlap in the concepts.
>> It would be good to talk a little about the nested support (offline
>> may be) to make sure that we are not missing some major interface that
>> would require a lot of change. If we need to prepare ground, I think
>> the timing is good.
>>
>> The size of the IRQ number space might be a problem. It seems we
>> would need to increase it considerably to support multiple nested
>> guests. That said I haven't look much how nested is designed.
>
> The size of the VP space is a bigger concern. Even today. We really
> need qemu to tell the max #cpu to KVM so we can allocate less of them.
ah yes. we would also need to reduce the number of available priorities
per CPU to have more EQ descriptors available if I recall well.
> As for nesting, I suggest for the foreseeable future we stick to XICS
> emulation in nested guests.
ok. so no kernel_irqchip at all. hmm.
I was wondering how possible it was to have L2 initialize the underlying
OPAL structures in the L0 hypervisor. May be with a sort of proxy hcall
which would perform the initialization in QEMU L1 on behalf of L2.
Cheers,
C.
next prev parent reply other threads:[~2019-01-26 8:25 UTC|newest]
Thread overview: 271+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-07 18:43 [PATCH 00/19] KVM: PPC: Book3S HV: add XIVE native exploitation mode Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 01/19] powerpc/xive: export flags for the XIVE native exploitation mode hcalls Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-09 3:33 ` David Gibson
2019-01-09 3:33 ` David Gibson
2019-01-09 13:08 ` Michael Ellerman
2019-01-09 13:08 ` Michael Ellerman
2019-01-09 13:38 ` Cédric Le Goater
2019-01-09 13:38 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 02/19] powerpc/xive: add OPAL extensions for the XIVE native exploitation support Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-09 4:26 ` David Gibson
2019-01-09 4:26 ` David Gibson
2019-01-07 18:43 ` [PATCH 03/19] KVM: PPC: Book3S HV: check the IRQ controller type Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-09 4:27 ` David Gibson
2019-01-09 4:27 ` David Gibson
2019-01-22 4:56 ` Paul Mackerras
2019-01-22 4:56 ` Paul Mackerras
2019-01-23 16:24 ` Cédric Le Goater
2019-01-23 16:24 ` Cédric Le Goater
2019-02-04 0:50 ` David Gibson
2019-02-04 0:50 ` David Gibson
2019-02-04 10:16 ` Cédric Le Goater
2019-02-04 10:16 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 04/19] KVM: PPC: Book3S HV: export services for the XIVE native exploitation device Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-11 4:09 ` David Gibson
2019-01-11 4:09 ` David Gibson
2019-01-07 18:43 ` [PATCH 05/19] KVM: PPC: Book3S HV: add a new KVM device for the XIVE native exploitation mode Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-22 5:05 ` Paul Mackerras
2019-01-22 5:05 ` Paul Mackerras
2019-01-23 16:28 ` Cédric Le Goater
2019-01-23 16:28 ` Cédric Le Goater
2019-01-28 17:35 ` Cédric Le Goater
2019-01-28 17:35 ` Cédric Le Goater
2019-01-30 4:29 ` Paul Mackerras
2019-01-30 4:29 ` Paul Mackerras
2019-01-30 7:01 ` Cédric Le Goater
2019-01-30 7:01 ` Cédric Le Goater
2019-01-31 3:01 ` Paul Mackerras
2019-01-31 3:01 ` Paul Mackerras
2019-02-01 17:03 ` Cédric Le Goater
2019-02-01 17:03 ` Cédric Le Goater
2019-02-04 4:25 ` David Gibson
2019-02-04 4:25 ` David Gibson
2019-02-04 11:19 ` Cédric Le Goater
2019-02-04 11:19 ` Cédric Le Goater
2019-02-05 5:26 ` David Gibson
2019-02-05 5:26 ` David Gibson
2019-01-07 18:43 ` [PATCH 06/19] KVM: PPC: Book3S HV: add a GET_ESB_FD control to the XIVE native device Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-22 5:09 ` Paul Mackerras
2019-01-22 5:09 ` Paul Mackerras
2019-01-23 16:48 ` Cédric Le Goater
2019-01-23 16:48 ` Cédric Le Goater
2019-02-04 4:45 ` David Gibson
2019-02-04 4:45 ` David Gibson
2019-02-04 11:30 ` Cédric Le Goater
2019-02-04 11:30 ` Cédric Le Goater
2019-02-05 5:28 ` David Gibson
2019-02-05 5:28 ` David Gibson
2019-02-05 12:55 ` Cédric Le Goater
2019-02-05 12:55 ` Cédric Le Goater
2019-02-06 1:23 ` David Gibson
2019-02-06 1:23 ` David Gibson
2019-02-06 7:21 ` Cédric Le Goater
2019-02-06 7:21 ` Cédric Le Goater
2019-02-07 2:49 ` David Gibson
2019-02-07 2:49 ` David Gibson
2019-02-07 9:03 ` Cédric Le Goater
2019-02-07 9:03 ` Cédric Le Goater
2019-02-07 9:03 ` Cédric Le Goater
2019-02-08 5:15 ` David Gibson
2019-02-08 5:15 ` David Gibson
2019-02-08 7:58 ` Cédric Le Goater
2019-02-08 7:58 ` Cédric Le Goater
2019-02-08 21:53 ` Paul Mackerras
2019-02-08 21:53 ` Paul Mackerras
2019-02-09 9:41 ` Cédric Le Goater
2019-02-09 9:41 ` Cédric Le Goater
2019-02-11 2:38 ` David Gibson
2019-02-11 2:38 ` David Gibson
2019-02-11 6:42 ` Benjamin Herrenschmidt
2019-02-11 6:42 ` Benjamin Herrenschmidt
2019-02-12 22:07 ` Cédric Le Goater
2019-02-12 22:07 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 07/19] KVM: PPC: Book3S HV: add a GET_TIMA_FD control to " Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 08/19] KVM: PPC: Book3S HV: add a VC_BASE control to the " Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-22 5:14 ` Paul Mackerras
2019-01-22 5:14 ` Paul Mackerras
2019-01-23 16:56 ` Cédric Le Goater
2019-01-23 16:56 ` Cédric Le Goater
2019-02-04 4:49 ` David Gibson
2019-02-04 4:49 ` David Gibson
2019-02-04 15:36 ` Cédric Le Goater
2019-02-04 15:36 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 09/19] KVM: PPC: Book3S HV: add a SET_SOURCE " Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-02-04 4:57 ` David Gibson
2019-02-04 4:57 ` David Gibson
2019-02-04 19:07 ` Cédric Le Goater
2019-02-04 19:07 ` Cédric Le Goater
2019-02-05 5:35 ` David Gibson
2019-02-05 5:35 ` David Gibson
2019-02-05 13:39 ` Cédric Le Goater
2019-02-05 13:39 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 10/19] KVM: PPC: Book3S HV: add a EISN attribute to kvmppc_xive_irq_state Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 11/19] KVM: PPC: Book3S HV: add support for the XIVE native exploitation mode hcalls Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-01-22 5:23 ` Paul Mackerras
2019-01-22 5:23 ` Paul Mackerras
2019-01-23 6:44 ` Benjamin Herrenschmidt
2019-01-23 6:44 ` Benjamin Herrenschmidt
2019-01-23 8:48 ` Cédric Le Goater
2019-01-23 8:48 ` Cédric Le Goater
2019-01-23 10:26 ` Paul Mackerras
2019-01-23 10:26 ` Paul Mackerras
2019-01-23 10:48 ` Cédric Le Goater
2019-01-23 10:48 ` Cédric Le Goater
2019-01-23 21:23 ` Benjamin Herrenschmidt
2019-01-23 21:23 ` Benjamin Herrenschmidt
2019-01-07 18:43 ` [PATCH 12/19] KVM: PPC: Book3S HV: record guest queue page address Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-02-04 5:15 ` David Gibson
2019-02-04 5:15 ` David Gibson
2019-02-04 15:37 ` Cédric Le Goater
2019-02-04 15:37 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 13/19] KVM: PPC: Book3S HV: add a SYNC control for the XIVE native migration Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-02-04 5:17 ` David Gibson
2019-02-04 5:17 ` David Gibson
2019-02-04 15:39 ` Cédric Le Goater
2019-02-04 15:39 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 14/19] KVM: PPC: Book3S HV: add a control to make the XIVE EQ pages dirty Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-02-04 5:18 ` David Gibson
2019-02-04 5:18 ` David Gibson
2019-02-04 15:46 ` Cédric Le Goater
2019-02-04 15:46 ` Cédric Le Goater
2019-02-05 5:30 ` David Gibson
2019-02-05 5:30 ` David Gibson
2019-01-07 18:43 ` [PATCH 15/19] KVM: PPC: Book3S HV: add get/set accessors for the source configuration Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-02-04 5:21 ` David Gibson
2019-02-04 5:21 ` David Gibson
2019-02-04 16:07 ` Cédric Le Goater
2019-02-04 16:07 ` Cédric Le Goater
2019-02-05 5:32 ` David Gibson
2019-02-05 5:32 ` David Gibson
2019-02-05 13:03 ` Cédric Le Goater
2019-02-05 13:03 ` Cédric Le Goater
2019-02-06 1:23 ` David Gibson
2019-02-06 1:23 ` David Gibson
2019-02-06 1:24 ` David Gibson
2019-02-06 1:24 ` David Gibson
2019-02-06 7:07 ` Cédric Le Goater
2019-02-06 7:07 ` Cédric Le Goater
2019-02-07 2:48 ` David Gibson
2019-02-07 2:48 ` David Gibson
2019-02-07 9:13 ` Cédric Le Goater
2019-02-07 9:13 ` Cédric Le Goater
2019-02-08 5:15 ` David Gibson
2019-02-08 5:15 ` David Gibson
2019-02-14 16:50 ` Cédric Le Goater
2019-02-14 16:50 ` Cédric Le Goater
2019-01-07 18:43 ` [PATCH 16/19] KVM: PPC: Book3S HV: add get/set accessors for the EQ configuration Cédric Le Goater
2019-01-07 18:43 ` Cédric Le Goater
2019-02-04 5:24 ` David Gibson
2019-02-04 5:24 ` David Gibson
2019-02-05 17:45 ` Cédric Le Goater
2019-02-05 17:45 ` Cédric Le Goater
2019-01-07 19:10 ` [PATCH 17/19] KVM: PPC: Book3S HV: add get/set accessors for the VP XIVE state Cédric Le Goater
2019-01-07 19:10 ` Cédric Le Goater
2019-01-07 19:10 ` [PATCH 18/19] KVM: PPC: Book3S HV: add passthrough support Cédric Le Goater
2019-01-07 19:10 ` Cédric Le Goater
2019-01-22 5:26 ` Paul Mackerras
2019-01-22 5:26 ` Paul Mackerras
2019-01-23 6:45 ` Benjamin Herrenschmidt
2019-01-23 6:45 ` Benjamin Herrenschmidt
2019-01-23 10:30 ` Paul Mackerras
2019-01-23 10:30 ` Paul Mackerras
2019-01-23 11:07 ` Cédric Le Goater
2019-01-23 11:07 ` Cédric Le Goater
2019-01-28 6:13 ` Paul Mackerras
2019-01-28 6:13 ` Paul Mackerras
2019-01-28 18:26 ` Cédric Le Goater
2019-01-28 18:26 ` Cédric Le Goater
2019-01-29 2:45 ` Paul Mackerras
2019-01-29 2:45 ` Paul Mackerras
2019-01-29 13:47 ` Cédric Le Goater
2019-01-29 13:47 ` Cédric Le Goater
2019-01-30 6:20 ` Paul Mackerras
2019-01-30 6:20 ` Paul Mackerras
2019-01-30 15:54 ` Cédric Le Goater
2019-01-30 15:54 ` Cédric Le Goater
2019-01-31 2:48 ` Paul Mackerras
2019-01-31 2:48 ` Paul Mackerras
2019-01-29 4:12 ` Paul Mackerras
2019-01-29 4:12 ` Paul Mackerras
2019-01-29 17:44 ` Cédric Le Goater
2019-01-29 17:44 ` Cédric Le Goater
2019-01-30 5:55 ` Paul Mackerras
2019-01-30 5:55 ` Paul Mackerras
2019-01-30 7:06 ` Cédric Le Goater
2019-01-30 7:06 ` Cédric Le Goater
2019-01-23 21:25 ` Benjamin Herrenschmidt
2019-01-23 21:25 ` Benjamin Herrenschmidt
2019-01-24 8:41 ` Cédric Le Goater
2019-01-24 8:41 ` Cédric Le Goater
2019-01-28 4:43 ` Paul Mackerras
2019-01-28 4:43 ` Paul Mackerras
2019-01-29 13:46 ` Cédric Le Goater
2019-01-29 13:46 ` Cédric Le Goater
2019-01-07 19:10 ` [PATCH 19/19] KVM: introduce a KVM_DELETE_DEVICE ioctl Cédric Le Goater
2019-01-07 19:10 ` Cédric Le Goater
2019-01-22 5:42 ` Paul Mackerras
2019-01-22 5:42 ` Paul Mackerras
2019-01-23 18:39 ` Cédric Le Goater
2019-01-23 18:39 ` Cédric Le Goater
2019-01-23 21:32 ` Benjamin Herrenschmidt
2019-01-23 21:32 ` Benjamin Herrenschmidt
2019-02-04 5:26 ` [PATCH 17/19] KVM: PPC: Book3S HV: add get/set accessors for the VP XIVE state David Gibson
2019-02-04 5:26 ` David Gibson
2019-02-04 18:57 ` Cédric Le Goater
2019-02-04 18:57 ` Cédric Le Goater
2019-02-05 5:33 ` David Gibson
2019-02-05 5:33 ` David Gibson
2019-02-05 11:58 ` Cédric Le Goater
2019-02-05 11:58 ` Cédric Le Goater
2019-02-06 1:19 ` David Gibson
2019-02-06 1:19 ` David Gibson
2019-01-22 4:46 ` [PATCH 00/19] KVM: PPC: Book3S HV: add XIVE native exploitation mode Paul Mackerras
2019-01-22 4:46 ` Paul Mackerras
2019-01-23 19:07 ` Cédric Le Goater
2019-01-23 19:07 ` Cédric Le Goater
2019-01-23 21:35 ` Benjamin Herrenschmidt
2019-01-23 21:35 ` Benjamin Herrenschmidt
2019-01-26 8:25 ` Cédric Le Goater [this message]
2019-01-26 8:25 ` Cédric Le Goater
2019-02-04 5:36 ` David Gibson
2019-02-04 5:36 ` David Gibson
2019-02-05 11:31 ` Cédric Le Goater
2019-02-05 11:31 ` Cédric Le Goater
2019-02-05 22:13 ` Paul Mackerras
2019-02-05 22:13 ` Paul Mackerras
2019-02-06 1:18 ` David Gibson
2019-02-06 1:18 ` David Gibson
2019-02-06 7:35 ` Cédric Le Goater
2019-02-06 7:35 ` Cédric Le Goater
2019-02-07 2:51 ` David Gibson
2019-02-07 2:51 ` David Gibson
2019-02-07 8:31 ` Cédric Le Goater
2019-02-07 8:31 ` Cédric Le Goater
2019-02-08 5:07 ` David Gibson
2019-02-08 5:07 ` David Gibson
2019-02-08 7:38 ` Cédric Le Goater
2019-02-08 7:38 ` Cédric Le Goater
2019-01-28 5:51 ` Paul Mackerras
2019-01-28 5:51 ` Paul Mackerras
2019-01-29 13:51 ` Cédric Le Goater
2019-01-29 13:51 ` Cédric Le Goater
2019-01-30 5:40 ` Paul Mackerras
2019-01-30 5:40 ` Paul Mackerras
2019-01-30 15:36 ` Cédric Le Goater
2019-01-30 15:36 ` 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=06b7c4d2-72ba-ca4f-aded-789280798136@kaod.org \
--to=clg@kaod.org \
--cc=benh@kernel.crashing.org \
--cc=david@gibson.dropbear.id.au \
--cc=kvm-ppc@vger.kernel.org \
--cc=kvm@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=paulus@ozlabs.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.