From: Andy Lutomirski <luto@amacapital.net>
To: "Luis R. Rodriguez" <mcgrof@suse.com>
Cc: "Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
"H. Peter Anvin" <hpa@zytor.com>,
"David Vrabel" <david.vrabel@citrix.com>,
"Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>,
"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Roger Pau Monné" <roger.pau@citrix.com>,
"Juergen Gross" <jgross@suse.com>,
"Rusty Russell" <rusty@rustcorp.com.au>,
"Borislav Petkov" <bp@suse.de>,
"Jeremy Fitzhardinge" <jeremy@goop.org>
Subject: Re: [PATCH v1 04/12] xen/hvmlite: Bootstrap HVMlite guest
Date: Tue, 26 Jan 2016 10:46:34 -0800 [thread overview]
Message-ID: <CALCETrXGjfd7JWE31admnEEUmM0aeyWRih_HX_xNM3n5=YYTLw@mail.gmail.com> (raw)
In-Reply-To: <20160126183425.GH20964@wotan.suse.de>
On Tue, Jan 26, 2016 at 10:34 AM, Luis R. Rodriguez <mcgrof@suse.com> wrote:
> On Mon, Jan 25, 2016 at 05:28:08PM -0500, Boris Ostrovsky wrote:
>> On 01/25/2016 04:21 PM, H. Peter Anvin wrote:
>> >On 01/25/16 13:12, Luis R. Rodriguez wrote:
>> >>>Perhaps, but someone would still have to set hardware_subarch. And
>> >>>it's hvmlite_bootparams() that does it.
>> >>No, Xen would do it as well, essentially all of hvmlite_bootparams() could be
>> >>done in Xen.
>> >>
>> >Or a stub code.
>>
>> This patch in fact is the stub for Xen HVMlite guests, after we are
>> done with it we jump to bare-metal startup code (i.e startup_32|64)
>
> Right the point is the stub need not be in Linux, I'll explain in the other
> thread where I provided more details on the different known approaches.
>
ISTM if the Xen ABI-specified entry point has a different convention
than the Linux native entry, then the stub should live in Linux. It
would be just a couple if lines of code, right?
The issue that caused headaches in the past isn't that there's code
that's executed only on native, it's that there are whole big
functions that are executed only on native for no good reason and that
aren't clearly marked.
If we had native_start_kernel and xen_start_kernel, and they both
called very quickly in to common_start_kernel, it would be very clear
what's going on.
--Andy
next prev parent reply other threads:[~2016-01-26 18:47 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-22 21:35 [PATCH v1 00/12] HVMlite domU support Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 01/12] x86/smp: Make start_secondary() and initial_pg_pmd visible globally Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-25 10:53 ` David Vrabel
2016-01-25 10:53 ` David Vrabel
2016-01-25 15:30 ` Boris Ostrovsky
2016-01-25 15:30 ` Boris Ostrovsky
2016-01-26 21:58 ` Borislav Petkov
2016-01-26 21:58 ` Borislav Petkov
2016-01-22 21:35 ` [PATCH v1 02/12] xen/hvmlite: Factor out common kernel init code Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 23:01 ` Luis R. Rodriguez
2016-01-22 23:01 ` Luis R. Rodriguez
2016-01-22 23:12 ` Boris Ostrovsky
2016-01-22 23:27 ` Boris Ostrovsky
2016-01-22 23:27 ` Boris Ostrovsky
2016-01-22 23:41 ` Luis R. Rodriguez
2016-01-22 23:41 ` Luis R. Rodriguez
2016-01-22 23:12 ` Boris Ostrovsky
2016-01-25 11:04 ` David Vrabel
2016-01-25 11:04 ` [Xen-devel] " David Vrabel
2016-01-25 15:42 ` Boris Ostrovsky
2016-01-25 15:42 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 03/12] xen/hvmlite: Import hvmlite-related Xen public interfaces Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 04/12] xen/hvmlite: Bootstrap HVMlite guest Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 23:32 ` Luis R. Rodriguez
2016-01-22 23:32 ` Luis R. Rodriguez
2016-01-23 0:30 ` [Xen-devel] " Andrew Cooper
2016-01-23 0:30 ` Andrew Cooper
2016-01-23 0:45 ` [Xen-devel] " Luis R. Rodriguez
2016-01-23 0:45 ` Luis R. Rodriguez
2016-01-23 0:55 ` Luis R. Rodriguez
2016-01-23 0:55 ` [Xen-devel] " Luis R. Rodriguez
2016-01-23 14:49 ` Andrew Cooper
2016-01-23 14:49 ` [Xen-devel] " Andrew Cooper
2016-01-23 15:34 ` Konrad Rzeszutek Wilk
2016-01-23 15:34 ` Konrad Rzeszutek Wilk
2016-01-23 16:01 ` [Xen-devel] " H. Peter Anvin
2016-01-23 16:12 ` Konrad Rzeszutek Wilk
2016-01-23 16:12 ` Konrad Rzeszutek Wilk
2016-01-23 18:28 ` H. Peter Anvin
2016-01-23 18:28 ` [Xen-devel] " H. Peter Anvin
2016-01-25 10:30 ` Roger Pau Monné
2016-01-25 10:30 ` [Xen-devel] " Roger Pau Monné
2016-01-23 16:01 ` H. Peter Anvin
2016-01-25 22:19 ` Luis R. Rodriguez
2016-01-25 22:19 ` [Xen-devel] " Luis R. Rodriguez
2016-01-25 22:55 ` Boris Ostrovsky
2016-01-26 20:30 ` Luis R. Rodriguez
2016-01-26 20:30 ` [Xen-devel] " Luis R. Rodriguez
2016-01-26 21:51 ` Boris Ostrovsky
2016-01-26 21:51 ` [Xen-devel] " Boris Ostrovsky
2016-01-27 0:04 ` Luis R. Rodriguez
2016-01-27 0:04 ` [Xen-devel] " Luis R. Rodriguez
2016-01-27 2:16 ` Luis R. Rodriguez
2016-01-27 4:54 ` Luis R. Rodriguez
2016-01-27 14:42 ` Konrad Rzeszutek Wilk
2016-01-27 14:50 ` [Xen-devel] " David Vrabel
2016-01-27 15:06 ` Boris Ostrovsky
2016-01-27 15:09 ` David Vrabel
2016-01-27 15:09 ` [Xen-devel] " David Vrabel
2016-01-27 15:17 ` Boris Ostrovsky
2016-01-27 15:29 ` Konrad Rzeszutek Wilk
2016-01-27 16:15 ` Boris Ostrovsky
2016-01-27 16:15 ` [Xen-devel] " Boris Ostrovsky
2016-01-27 18:48 ` Luis R. Rodriguez
2016-01-27 18:48 ` [Xen-devel] " Luis R. Rodriguez
2016-01-27 19:00 ` Luis R. Rodriguez
2016-01-27 19:00 ` [Xen-devel] " Luis R. Rodriguez
2016-01-27 23:58 ` Boris Ostrovsky
2016-01-27 23:58 ` Boris Ostrovsky
2016-01-27 15:17 ` Boris Ostrovsky
2016-01-27 15:06 ` Boris Ostrovsky
2016-01-27 16:14 ` [Xen-devel] " Borislav Petkov
2016-01-27 16:14 ` Borislav Petkov
2016-01-27 14:50 ` David Vrabel
2016-01-27 2:16 ` Luis R. Rodriguez
2016-01-25 22:55 ` Boris Ostrovsky
2016-01-25 15:08 ` [Xen-devel] " Boris Ostrovsky
2016-01-25 15:08 ` Boris Ostrovsky
2016-01-25 16:08 ` Boris Ostrovsky
2016-01-25 21:12 ` Luis R. Rodriguez
2016-01-25 21:12 ` Luis R. Rodriguez
2016-01-25 21:21 ` H. Peter Anvin
2016-01-25 21:21 ` H. Peter Anvin
2016-01-25 22:28 ` Boris Ostrovsky
2016-01-26 18:34 ` Luis R. Rodriguez
2016-01-26 18:46 ` Andy Lutomirski [this message]
2016-01-26 19:00 ` Boris Ostrovsky
2016-01-26 19:00 ` Boris Ostrovsky
2016-01-26 19:14 ` [Xen-devel] " Luis R. Rodriguez
2016-01-26 19:14 ` Luis R. Rodriguez
2016-01-26 18:46 ` Andy Lutomirski
2016-01-26 18:34 ` Luis R. Rodriguez
2016-01-25 22:28 ` Boris Ostrovsky
2016-01-25 16:08 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 05/12] xen/hvmlite: Allow HVMlite guests delay initializing grant table Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 06/12] xen/hvmlite: Initialize PCI Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-25 10:21 ` Roger Pau Monné
2016-01-25 10:21 ` Roger Pau Monné
2016-01-22 21:35 ` [PATCH v1 07/12] xen/hvmlite: Prepare cpu_initialize_context() routine for HVMlite SMP Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 08/12] xen/hvmlite: Initialize context for secondary VCPUs Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 09/12] xen/hvmlite: Extend APIC operations for HVMlite guests Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 10/12] xen/hvmlite: Use x86's default timer init " Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 11/12] xen/hvmlite: Boot secondary CPUs Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-22 21:35 ` [PATCH v1 12/12] xen/hvmlite: Enable CPU on-/offlining Boris Ostrovsky
2016-01-22 21:35 ` Boris Ostrovsky
2016-01-25 10:51 ` [PATCH v1 00/12] HVMlite domU support David Vrabel
2016-01-25 15:25 ` Boris Ostrovsky
2016-01-25 15:25 ` Boris Ostrovsky
2016-01-25 10:51 ` David Vrabel
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