From: Juergen Gross <jgross@suse.com>
To: Ankur Arora <ankur.a.arora@oracle.com>,
linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org
Cc: pbonzini@redhat.com, boris.ostrovsky@oracle.com,
sstabellini@kernel.org, joao.m.martins@oracle.com,
konrad.wilk@oracle.com
Subject: Re: [Xen-devel] [RFC PATCH 07/16] x86/xen: make vcpu_info part of xenhost_t
Date: Fri, 14 Jun 2019 13:53:49 +0200 [thread overview]
Message-ID: <9f1323f4-06ae-93a5-c9b0-3b84ee549fa6@suse.com> (raw)
In-Reply-To: <20190509172540.12398-8-ankur.a.arora@oracle.com>
On 09.05.19 19:25, Ankur Arora wrote:
> Abstract out xen_vcpu_id probing via (*probe_vcpu_id)(). Once that is
> availab,e the vcpu_info registration happens via the VCPUOP hypercall.
>
> Note that for the nested case, there are two vcpu_ids, and two vcpu_info
> areas, one each for the default xenhost and the remote xenhost.
> The vcpu_info is used via pv_irq_ops, and evtchn signaling.
>
> The other VCPUOP hypercalls are used for management (and scheduling)
> which is expected to be done purely in the default hypervisor.
> However, scheduling of L1-guest does imply L0-Xen-vcpu_info switching,
> which might mean that the remote hypervisor needs some visibility
> into related events/hypercalls in the default hypervisor.
Another candidate for dropping due to layering violation, I guess.
Juergen
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next prev parent reply other threads:[~2019-06-14 11:54 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-09 17:25 [Xen-devel] [RFC PATCH 00/16] xenhost support Ankur Arora
2019-05-09 17:25 ` [Xen-devel] [RFC PATCH 01/16] x86/xen: add xenhost_t interface Ankur Arora
2019-06-07 15:04 ` Juergen Gross
2019-06-11 7:16 ` Ankur Arora
2019-06-14 11:52 ` Juergen Gross
2019-05-09 17:25 ` Ankur Arora
2019-05-09 17:25 ` [RFC PATCH 02/16] x86/xen: cpuid support in xenhost_t Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-12 21:09 ` Andrew Cooper
2019-05-09 17:25 ` [Xen-devel] [RFC PATCH 03/16] x86/xen: make hypercall_page generic Ankur Arora
2019-05-09 17:25 ` Ankur Arora
2019-05-09 17:25 ` [RFC PATCH 04/16] x86/xen: hypercall support for xenhost_t Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-12 21:15 ` Andrew Cooper
2019-06-14 7:20 ` Ankur Arora
2019-06-14 7:35 ` Juergen Gross
2019-06-14 8:00 ` Andrew Cooper
2019-05-09 17:25 ` [RFC PATCH 05/16] x86/xen: add feature support in xenhost_t Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-05-09 17:25 ` [Xen-devel] [RFC PATCH 06/16] x86/xen: add shared_info support to xenhost_t Ankur Arora
2019-06-07 15:08 ` Juergen Gross
2019-06-08 5:01 ` Ankur Arora
2019-05-09 17:25 ` Ankur Arora
2019-05-09 17:25 ` [RFC PATCH 07/16] x86/xen: make vcpu_info part of xenhost_t Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-14 11:53 ` Juergen Gross [this message]
2019-06-17 6:28 ` Ankur Arora
2019-05-09 17:25 ` [RFC PATCH 08/16] x86/xen: irq/upcall handling with multiple xenhosts Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-14 12:01 ` Juergen Gross
2019-05-09 17:25 ` [RFC PATCH 09/16] xen/evtchn: support evtchn in xenhost_t Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-14 12:04 ` Juergen Gross
2019-06-17 6:09 ` Ankur Arora
2019-05-09 17:25 ` [RFC PATCH 10/16] xen/balloon: support ballooning " Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-17 9:28 ` Juergen Gross
2019-06-19 2:24 ` Ankur Arora
2019-05-09 17:25 ` [RFC PATCH 11/16] xen/grant-table: make grant-table xenhost aware Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-17 9:36 ` Juergen Gross
2019-06-19 2:25 ` Ankur Arora
2019-05-09 17:25 ` [RFC PATCH 12/16] xen/xenbus: support xenbus frontend/backend with xenhost_t Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-17 9:50 ` Juergen Gross
2019-06-19 2:38 ` Ankur Arora
2019-05-09 17:25 ` [Xen-devel] [RFC PATCH 13/16] drivers/xen: gnttab, evtchn, xenbus API changes Ankur Arora
2019-06-17 10:07 ` Juergen Gross
2019-06-19 2:55 ` Ankur Arora
2019-05-09 17:25 ` Ankur Arora
2019-05-09 17:25 ` [Xen-devel] [RFC PATCH 14/16] xen/blk: " Ankur Arora
2019-06-17 10:14 ` Juergen Gross
2019-06-19 2:59 ` Ankur Arora
2019-05-09 17:25 ` Ankur Arora
2019-05-09 17:25 ` [RFC PATCH 15/16] xen/net: " Ankur Arora
2019-05-09 17:25 ` [Xen-devel] " Ankur Arora
2019-06-17 10:14 ` Juergen Gross
2019-05-09 17:25 ` [Xen-devel] [RFC PATCH 16/16] xen/grant-table: host_addr fixup in mapping on xenhost_r0 Ankur Arora
2019-06-17 10:55 ` Juergen Gross
2019-06-19 3:02 ` Ankur Arora
2019-05-09 17:25 ` Ankur Arora
2019-06-07 14:51 ` [Xen-devel] [RFC PATCH 00/16] xenhost support Juergen Gross
2019-06-07 15:22 ` Joao Martins
2019-06-07 16:21 ` Juergen Gross
2019-06-08 5:50 ` Ankur Arora
2019-06-08 5:33 ` Ankur Arora
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